/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
a{
  text-decoration: none;
  color: inherit;
}

:root {
  /* Light Theme Colors */
  --primary-color: #2563eb;
  --primary-rgb: 37, 99, 235;
  --primary-dark: #1d4ed8;
  --secondary-color: #10b981;
  --accent-color: #f59e0b;
  --text-color: #1f2937;
  --text-light: #6b7280;
  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-900: #111827;

  /* Biology Theme Colors */
  --bio-green: #059669;
  --bio-blue: #0ea5e9;
  --bio-purple: #8b5cf6;
  --bio-orange: #f97316;

  /* Typography */
  --font-family: "Cairo", sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 4rem;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Dark Theme */
[data-theme="dark"] {
  --text-color: #f9fafb;
  --text-light: #d1d5db;
  --white: #0f172a;
  --gray-50: #1e293b;
  --gray-100: #334155;
  --gray-200: #475569;
  --gray-900: #f1f5f9;

  /* Dark theme specific colors */
  --primary-color: #3b82f6;
  --primary-dark: #2563eb;
  --secondary-color: #22d3ee;
  --accent-color: #fbbf24;

  /* Enhanced shadows for dark mode */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}

/* Base Styles */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-color);
  background: var(--white);
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  /* text-align: center; */
}

.section {
  padding: var(--spacing-4xl) 0;
}

/* Mega Animated Background */
.mega-animated-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    rgba(37, 99, 235, 0.03) 0%,
    rgba(16, 185, 129, 0.03) 25%,
    rgba(139, 92, 246, 0.03) 50%,
    rgba(245, 158, 11, 0.03) 75%,
    rgba(239, 68, 68, 0.03) 100%
  );
  /* animation: backgroundShift 20s ease-in-out infinite; */
}

[data-theme="dark"] .mega-animated-bg {
  background: linear-gradient(
    135deg,
    rgba(59, 130, 246, 0.05) 0%,
    rgba(34, 211, 238, 0.05) 25%,
    rgba(139, 92, 246, 0.05) 50%,
    rgba(251, 191, 36, 0.05) 75%,
    rgba(239, 68, 68, 0.05) 100%
  );
}

@keyframes backgroundShift {
  0%,
  100% {
    filter: hue-rotate(0deg);
  }
  25% {
    filter: hue-rotate(90deg);
  }
  50% {
    filter: hue-rotate(180deg);
  }
  75% {
    filter: hue-rotate(270deg);
  }
  100% {
    filter: hue-rotate(360deg);
  }
}

/* Giant DNA Structures */
.giant-dna {
  position: absolute;
  width: 300px;
  height: 600px;
  opacity: 0.08;
}

[data-theme="dark"] .giant-dna {
  opacity: 0.12;
}

.giant-dna::before,
.giant-dna::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 100%;
  background: linear-gradient(45deg, var(--bio-blue), var(--bio-green), var(--bio-purple));
  border-radius: 4px;
  animation: megaDnaRotate 15s linear infinite;
}

.giant-dna::before {
  left: 50px;
  transform-origin: center;
}

.giant-dna::after {
  right: 50px;
  transform-origin: center;
  animation-delay: -7.5s;
}

.dna-1 {
  top: -100px;
  right: -50px;
  animation: megaFloat1 25s ease-in-out infinite;
}

.dna-2 {
  top: 30%;
  left: -100px;
  animation: megaFloat2 30s ease-in-out infinite;
  animation-delay: -10s;
}

.dna-3 {
  bottom: -100px;
  right: 20%;
  animation: megaFloat3 35s ease-in-out infinite;
  animation-delay: -20s;
}

/* Skeleton Structures */
.skeleton-structures {
  position: absolute;
  width: 100%;
  height: 100%;
}

.skeleton {
  position: absolute;
  opacity: 0.06;
  animation: skeletonFloat 20s ease-in-out infinite;
}

[data-theme="dark"] .skeleton {
  opacity: 0.1;
}

.skeleton-1 {
  top: 10%;
  left: 5%;
  animation-delay: 0s;
}

.skeleton-2 {
  top: 60%;
  right: 10%;
  animation-delay: -7s;
}

.skeleton-3 {
  bottom: 15%;
  left: 15%;
  animation-delay: -14s;
}

.bone {
  position: absolute;
  background: linear-gradient(45deg, #e5e7eb, #d1d5db);
  border-radius: 20px;
  animation: boneRotate 12s ease-in-out infinite;
}

[data-theme="dark"] .bone {
  background: linear-gradient(45deg, #475569, #64748b);
}

.skeleton-1 .bone-1 {
  width: 80px;
  height: 15px;
  top: 0;
  left: 20px;
  animation-delay: 0s;
}

.skeleton-1 .bone-2 {
  width: 15px;
  height: 60px;
  top: 10px;
  left: 45px;
  animation-delay: -2s;
}

.skeleton-1 .bone-3 {
  width: 60px;
  height: 12px;
  top: 50px;
  left: 30px;
  animation-delay: -4s;
}

.skeleton-1 .bone-4 {
  width: 12px;
  height: 40px;
  top: 35px;
  left: 70px;
  animation-delay: -6s;
}

.skeleton-2 .bone-1 {
  width: 70px;
  height: 12px;
  top: 0;
  left: 15px;
  animation-delay: -1s;
}

.skeleton-2 .bone-2 {
  width: 12px;
  height: 50px;
  top: 8px;
  left: 35px;
  animation-delay: -3s;
}

.skeleton-2 .bone-3 {
  width: 50px;
  height: 10px;
  top: 40px;
  left: 25px;
  animation-delay: -5s;
}

.skeleton-3 .bone-1 {
  width: 90px;
  height: 18px;
  top: 0;
  left: 25px;
  animation-delay: -2s;
}

.skeleton-3 .bone-2 {
  width: 18px;
  height: 70px;
  top: 15px;
  left: 50px;
  animation-delay: -4s;
}

.skeleton-3 .bone-3 {
  width: 65px;
  height: 15px;
  top: 60px;
  left: 35px;
  animation-delay: -6s;
}

.skeleton-3 .bone-4 {
  width: 15px;
  height: 45px;
  top: 45px;
  left: 80px;
  animation-delay: -8s;
}

.skeleton-3 .bone-5 {
  width: 40px;
  height: 12px;
  top: 80px;
  left: 45px;
  animation-delay: -10s;
}

/* DNA Chains */
.dna-chains {
  position: absolute;
  width: 100%;
  height: 100%;
}

.dna-chain {
  position: absolute;
  opacity: 0.08;
  animation: dnaChainFloat 18s ease-in-out infinite;
}

[data-theme="dark"] .dna-chain {
  opacity: 0.12;
}

.chain-1 {
  top: 20%;
  right: 15%;
  animation-delay: 0s;
}

.chain-2 {
  top: 70%;
  left: 20%;
  animation-delay: -6s;
}

.chain-3 {
  top: 45%;
  right: 5%;
  animation-delay: -12s;
}

.base-pair {
  width: 40px;
  height: 8px;
  background: linear-gradient(90deg, var(--bio-blue), var(--bio-purple));
  margin: 15px 0;
  border-radius: 4px;
  animation: basePairPulse 8s ease-in-out infinite;
}

.base-pair:nth-child(even) {
  background: linear-gradient(90deg, var(--bio-green), var(--bio-orange));
  animation-delay: -2s;
}

@keyframes megaDnaRotate {
  0% {
    transform: rotateY(0deg) rotateX(0deg);
  }
  25% {
    transform: rotateY(90deg) rotateX(45deg);
  }
  50% {
    transform: rotateY(180deg) rotateX(90deg);
  }
  75% {
    transform: rotateY(270deg) rotateX(135deg);
  }
  100% {
    transform: rotateY(360deg) rotateX(180deg);
  }
}

@keyframes megaFloat1 {
  0%,
  100% {
    transform: translateY(0px) translateX(0px) rotate(0deg);
  }
  25% {
    transform: translateY(-100px) translateX(50px) rotate(90deg);
  }
  50% {
    transform: translateY(-50px) translateX(100px) rotate(180deg);
  }
  75% {
    transform: translateY(-150px) translateX(25px) rotate(270deg);
  }
}

@keyframes megaFloat2 {
  0%,
  100% {
    transform: translateY(0px) translateX(0px) rotate(0deg);
  }
  33% {
    transform: translateY(80px) translateX(-60px) rotate(120deg);
  }
  66% {
    transform: translateY(-40px) translateX(80px) rotate(240deg);
  }
}

@keyframes megaFloat3 {
  0%,
  100% {
    transform: translateY(0px) translateX(0px) rotate(0deg);
  }
  20% {
    transform: translateY(-60px) translateX(-40px) rotate(72deg);
  }
  40% {
    transform: translateY(40px) translateX(60px) rotate(144deg);
  }
  60% {
    transform: translateY(-80px) translateX(20px) rotate(216deg);
  }
  80% {
    transform: translateY(20px) translateX(-80px) rotate(288deg);
  }
}

@keyframes skeletonFloat {
  0%,
  100% {
    transform: translateY(0px) translateX(0px) rotate(0deg);
  }
  25% {
    transform: translateY(-50px) translateX(30px) rotate(90deg);
  }
  50% {
    transform: translateY(-25px) translateX(-40px) rotate(180deg);
  }
  75% {
    transform: translateY(-75px) translateX(20px) rotate(270deg);
  }
}

@keyframes boneRotate {
  0%,
  100% {
    transform: rotate(0deg) scale(1);
  }
  25% {
    transform: rotate(90deg) scale(1.1);
  }
  50% {
    transform: rotate(180deg) scale(0.9);
  }
  75% {
    transform: rotate(270deg) scale(1.05);
  }
}

@keyframes dnaChainFloat {
  0%,
  100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-60px) rotate(180deg);
  }
}

@keyframes basePairPulse {
  0%,
  100% {
    opacity: 0.8;
    transform: scaleX(1);
  }
  50% {
    opacity: 1;
    transform: scaleX(1.2);
  }
}

/* Mega Molecules */
.mega-molecules {
  position: absolute;
  width: 100%;
  height: 100%;
}

.mega-molecule {
  position: absolute;
  font-size: 4rem;
  opacity: 0.15;
  animation: megaMoleculeFloat 20s ease-in-out infinite;
  filter: drop-shadow(0 0 20px rgba(37, 99, 235, 0.3));
}

[data-theme="dark"] .mega-molecule {
  opacity: 0.2;
  filter: drop-shadow(0 0 25px rgba(59, 130, 246, 0.4));
}

.mol-1 {
  top: 10%;
  left: 5%;
  animation-delay: 0s;
}
.mol-2 {
  top: 25%;
  right: 10%;
  animation-delay: -3s;
}
.mol-3 {
  top: 60%;
  left: 15%;
  animation-delay: -6s;
}
.mol-4 {
  top: 80%;
  right: 20%;
  animation-delay: -9s;
}
.mol-5 {
  top: 40%;
  left: 80%;
  animation-delay: -12s;
}
.mol-6 {
  top: 70%;
  right: 70%;
  animation-delay: -15s;
}

@keyframes megaMoleculeFloat {
  0%,
  100% {
    transform: translateY(0px) translateX(0px) rotate(0deg) scale(1);
  }
  25% {
    transform: translateY(-80px) translateX(40px) rotate(90deg) scale(1.2);
  }
  50% {
    transform: translateY(-40px) translateX(-60px) rotate(180deg) scale(0.8);
  }
  75% {
    transform: translateY(-120px) translateX(80px) rotate(270deg) scale(1.1);
  }
}

/* Particle System */
.particle-system {
  position: absolute;
  width: 100%;
  height: 100%;
}

.particle {
  position: absolute;
  width: 6px;
  height: 6px;
  background: radial-gradient(circle, var(--bio-blue), var(--bio-purple));
  border-radius: 50%;
  opacity: 0.4;
  animation: particleMove 25s linear infinite;
}

[data-theme="dark"] .particle {
  background: radial-gradient(circle, var(--primary-color), var(--secondary-color));
  opacity: 0.6;
}

.particle:nth-child(1) {
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}
.particle:nth-child(2) {
  top: 20%;
  left: 80%;
  animation-delay: -2.5s;
}
.particle:nth-child(3) {
  top: 30%;
  left: 30%;
  animation-delay: -5s;
}
.particle:nth-child(4) {
  top: 40%;
  left: 70%;
  animation-delay: -7.5s;
}
.particle:nth-child(5) {
  top: 50%;
  left: 20%;
  animation-delay: -10s;
}
.particle:nth-child(6) {
  top: 60%;
  left: 90%;
  animation-delay: -12.5s;
}
.particle:nth-child(7) {
  top: 70%;
  left: 40%;
  animation-delay: -15s;
}
.particle:nth-child(8) {
  top: 80%;
  left: 60%;
  animation-delay: -17.5s;
}
.particle:nth-child(9) {
  top: 90%;
  left: 15%;
  animation-delay: -20s;
}
.particle:nth-child(10) {
  top: 25%;
  left: 85%;
  animation-delay: -22.5s;
}

@keyframes particleMove {
  0% {
    transform: translateY(0px) translateX(0px) scale(1);
    opacity: 0.4;
  }
  25% {
    transform: translateY(-200px) translateX(100px) scale(1.5);
    opacity: 0.8;
  }
  50% {
    transform: translateY(-100px) translateX(-150px) scale(0.5);
    opacity: 0.3;
  }
  75% {
    transform: translateY(-300px) translateX(200px) scale(1.2);
    opacity: 0.6;
  }
  100% {
    transform: translateY(-400px) translateX(-100px) scale(0.8);
    opacity: 0.2;
  }
}

/* Energy Waves */
.energy-waves {
  position: absolute;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, transparent 40%, rgba(37, 99, 235, 0.05) 50%, transparent 60%);
  border-radius: 50%;
  animation: waveExpand 15s ease-in-out infinite;
}

[data-theme="dark"] .wave {
  background: radial-gradient(circle, transparent 40%, rgba(59, 130, 246, 0.08) 50%, transparent 60%);
}

.wave-1 {
  top: 20%;
  left: 20%;
  animation-delay: 0s;
}
.wave-2 {
  top: 60%;
  left: 60%;
  animation-delay: -5s;
}
.wave-3 {
  top: 40%;
  left: 10%;
  animation-delay: -10s;
}

@keyframes waveExpand {
  0%,
  100% {
    transform: scale(0.5);
    opacity: 0.1;
  }
  50% {
    transform: scale(2);
    opacity: 0.3;
  }
}

/* Header */
.header {
    position: fixed;
    top: 1rem;
    left: 50%;
    transform: translateX(-50%) !important;
    z-index: 1000;
    width: 90%;
    max-width: 1200px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all var(--transition-normal);
}

[data-theme="dark"] .header {
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  padding: 0 2rem;
  transition: all 0.3s ease;}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 1rem;
}

.nav-menu {
  position: fixed;
  top: 90px;
  right: -100%;
  width: 280px;
  height: auto;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  border-radius: 20px;
  padding: 2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease-in-out, background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateX(30px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.nav-menu.show-menu {
  right: 20px;
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.nav-list {
  flex-direction: column;
  gap: 1.5rem;
}

@keyframes showMenuAnimation {
  from {
    transform: translateX(30px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.nav-toggle {
  display: flex;
}



.logo-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--bio-blue), var(--bio-green));
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: var(--font-size-xl);
  font-weight: 900;
  box-shadow: var(--shadow-lg);
  animation: logoGlow 3s ease-in-out infinite;
  position: relative;
  overflow: hidden;
}

.logo-icon::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, var(--bio-blue), var(--bio-green), var(--bio-purple), var(--bio-orange));
  border-radius: var(--radius-xl);
  z-index: -1;
  animation: logoRotate 4s linear infinite;
}

.logo-icon i {
  font-size: var(--font-size-xl);
  z-index: 2;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  /* Removed margin-bottom as subtitle is gone */
}

@keyframes logoGlow {
  0%,
  100% {
    box-shadow: var(--shadow-lg);
  }
  50% {
    box-shadow: 0 0 30px rgba(14, 165, 233, 0.4);
  }
}

@keyframes logoRotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  list-style: none;
}

.nav-link {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 600;
  transition: all 0.3s ease;
  position: relative;
  padding: 0.75rem 1.25rem;
  border-radius: 12px;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(255, 255, 255, 0.05);
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

[data-theme="dark"] .nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transition: var(--transition-fast);
  border-radius: var(--radius-sm);
}

.nav-link:hover::after {
  width: 100%;
}

.login-btn {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--white) !important;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-lg);
  transition: var(--transition-fast);
  box-shadow: var(--shadow-md);
}

.login-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.theme-toggle {
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--text-color);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--gray-100);
  transform: rotate(180deg);
}

[data-theme="dark"] .theme-toggle:hover {
  background: var(--gray-200);
}

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  color: var(--text-color);
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(180deg);
}

.nav-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  font-size: var(--font-size-xl);
  color: var(--text-color);
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.nav-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

[data-theme="dark"] .nav-close {
  color: var(--text-light);
  background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .nav-close:hover {
  background: rgba(255, 255, 255, 0.1);
}

.progress-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: rgba(0, 0, 0, 0.1);
  border-bottom-left-radius: 20px;
  border-bottom-right-radius: 20px;
  overflow: hidden;
}

[data-theme="dark"] .progress-bar {
  background: rgba(255, 255, 255, 0.1);
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  width: 0%;
  transition: width 0.3s ease;
  border-top-right-radius: 20px;
}

/* Hero Section */
.hero {
  padding-top: 120px;
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
}

.hero-container {
  width: 100%;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
}

.hero-text {
  position: relative;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  direction: rtl;
}

.hero-description {
  font-size: var(--font-size-xl);
  line-height: 1.8;
  margin: 2rem auto;
  text-align: center;
  color: var(--text-color);
  max-width: 800px;
  letter-spacing: 0.3px;
  font-weight: 500;
}



@keyframes typing-cursor {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

@keyframes reveal-text {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes cursor-blink {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}

@keyframes typing {
  from {
    width: 0;
    border-left-color: var(--primary-color);
  }
  to {
    width: 100%;
    border-left-color: transparent;
  }
}

@keyframes cursor-blink {
  from, to { border-left-color: var(--primary-color) }
  50% { border-left-color: transparent }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(16, 185, 129, 0.1));
  color: var(--primary-color);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-2xl);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  border: 1px solid rgba(37, 99, 235, 0.2);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  animation: typing 2s steps(20) 0.5s forwards,
             cursor-blink 0.8s infinite;
}

[data-theme="dark"] .hero-badge {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(34, 211, 238, 0.15));
  border: 1px solid rgba(59, 130, 246, 0.3);
}

@keyframes badgeGlow {
  0%,
  100% {
    box-shadow: 0 0 10px rgba(37, 99, 235, 0.2);
  }
  50% {
    box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
  }
}

.hero-title {
  margin-bottom: var(--spacing-lg);
}

.title-main {
  display: block;
  font-size: var(--font-size-6xl);
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--bio-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
  position: relative;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  overflow: hidden;
  white-space: nowrap;
  animation: revealText 2s ease-out forwards;
  animation-delay: 3.5s;
}

@keyframes revealText {
  from {
    clip-path: inset(0 100% 0 0);
  }
  to {
    clip-path: inset(0 0 0 0);
  }

}

.title-sub {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--text-light);

  animation: slideInUp 1s ease-out 0.3s both;
}

@keyframes titleGlow {
  0%,
  100% {
    filter: drop-shadow(0 0 10px rgba(37, 99, 235, 0.3));
  }
  50% {
    filter: drop-shadow(0 0 20px rgba(37, 99, 235, 0.5));
  }
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-light);
  margin-bottom: var(--spacing-xl);
  line-height: 1.8;
  animation: slideInUp 1s ease-out 0.6s both;
}

.hero-stats {
  display: flex;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  animation: slideInUp 1s ease-out 0.9s both;
  justify-content: center;
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: 900;
  color: var(--primary-color);
  margin-bottom: var(--spacing-xs);
}

[data-theme="dark"] .stat-number {
  color: var(--secondary-color);
}

.hero-stats .stat-number {
  color: var(--primary-color);
}

[data-theme="dark"] .hero-stats .stat-number {
  color: var(--primary-color);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-light);
  font-weight: 600;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  /* animation: slideInUp 1s ease-out 1.2s both;
   */
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg) var(--spacing-2xl);
  border-radius: var(--radius-xl);
  text-decoration: none;
  font-weight: 700;
  transition: var(--transition-normal);
  border: none;
  cursor: pointer;
  font-size: var(--font-size-base);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--white);
  box-shadow: var(--shadow-xl);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.btn-primary:hover {
  transform: translateY(-5px) scale(1.02);
  box-shadow: var(--shadow-2xl);
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

.btn-primary:active {
  transform: translateY(-2px) scale(0.98);
  box-shadow: var(--shadow-xl);
}

.btn-secondary {
  background: var(--white);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .btn-secondary {
  background: var(--gray-100);
  color: var(--primary-color);
}

.btn-secondary:hover {
  background: var(--primary-color);
  color: var(--white);
  transform: translateY(-5px);
}

.btn-glow {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: var(--transition-slow);
}

.btn:hover .btn-glow {
  left: 100%;
}

.hero-visual {
  display: flex;
  justify-content: center;
  animation: slideInRight 1s ease-out;
}

.floating-lab {
  position: relative;
  width: 400px;
  height: 400px;
  animation: labFloat 6s ease-in-out infinite;
}

.lab-equipment {
  position: relative;
  width: 100%;
  height: 100%;
}

.lab-equipment > div {
  position: absolute;
  font-size: 4rem;
  animation: equipmentFloat 8s ease-in-out infinite;
  filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.2));
}

[data-theme="dark"] .lab-equipment > div {
  filter: drop-shadow(0 10px 25px rgba(0, 0, 0, 0.4));
}

.microscope {
  top: 20%;
  left: 20%;
  animation-delay: 0s;
}
.test-tube {
  top: 60%;
  right: 20%;
  animation-delay: -2s;
}
.dna-model {
  bottom: 20%;
  left: 30%;
  animation-delay: -4s;
}
.petri-dish {
  top: 10%;
  right: 10%;
  animation-delay: -6s;
}

@keyframes labFloat {
  0%,
  100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-30px) rotate(5deg);
  }
}

@keyframes equipmentFloat {
  0%,
  100% {
    transform: translateY(0px) rotate(0deg) scale(1);
  }
  25% {
    transform: translateY(-20px) rotate(5deg) scale(1.1);
  }
  50% {
    transform: translateY(-10px) rotate(-3deg) scale(0.9);
  }
  75% {
    transform: translateY(-25px) rotate(8deg) scale(1.05);
  }
}

/* About Section */
.about {
  background: var(--gray-50);
}

.about-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
}

.about-image {
  position: relative;
}

.image-wrapper {
  position: relative;
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
}

.image-bg-effect {
  position: absolute;
  top: -20px;
  left: -20px;
  right: -20px;
  bottom: -20px;
  background: linear-gradient(135deg, var(--bio-blue), var(--bio-green), var(--bio-purple));
  border-radius: var(--radius-3xl);
  opacity: 0.1;
  animation: imageBgRotate 20s linear infinite;
}

.about-img-placeholder {
  width: 100%;
  height: 600px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  text-align: center;
}

.placeholder-content i {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.9;
}

.placeholder-content h3 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.placeholder-content p {
  font-size: var(--font-size-lg);
  opacity: 0.8;
}

.floating-elements {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 3;
}

.floating-elements .element {
  position: absolute;
  font-size: var(--font-size-3xl);
  animation: aboutElementFloat 8s ease-in-out infinite;
  filter: drop-shadow(0 5px 15px rgba(0, 0, 0, 0.3));
}

.element-1 {
  top: 10%;
  right: -10%;
  animation-delay: 0s;
}

.element-2 {
  bottom: 30%;
  left: -15%;
  animation-delay: -2s;
}

.element-3 {
  top: 60%;
  right: -5%;
  animation-delay: -4s;
}

.element-4 {
  top: 30%;
  left: -10%;
  animation-delay: -6s;
}

.image-frame {
  position: absolute;
  top: -10px;
  left: -10px;
  right: -10px;
  bottom: -10px;
  border: 3px solid var(--primary-color);
  border-radius: var(--radius-2xl);
  opacity: 0.3;
  animation: frameGlow 4s ease-in-out infinite;
  z-index: 1;
}

@keyframes imageBgRotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes aboutElementFloat {
  0%,
  100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-30px) rotate(180deg);
  }
}

@keyframes frameGlow {
  0%,
  100% {
    opacity: 0.3;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(1.02);
  }
}

/* Hero Section - توسيط فقط */
.hero-content.centered {
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  min-height: 70vh;
}

.hero-content.centered .hero-text {
  max-width: 800px;
}

/* تظبيط ألوان الأرقام */
.stat-number {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: 900;
  color: var(--primary-color);
  margin-bottom: var(--spacing-xs);
}

[data-theme="dark"] .stat-number {
  color: var(--secondary-color);
}

.hero-stats .stat-number {
  color: var(--primary-color);
}

[data-theme="dark"] .hero-stats .stat-number {
  color: var(--primary-color);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-light);
  font-weight: 600;
}

/* Statistics Section - تظبيط ألوان الأرقام */
.stats .stat-content .stat-number {
  display: block;
  font-size: var(--font-size-4xl);
  font-weight: 900;
  margin-bottom: var(--spacing-xs);
  color: var(--white);
}

[data-theme="dark"] .stats .stat-content .stat-number {
  color: var(--text-color);
}

.stats .stat-content .stat-label {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  color: var(--white);
}

[data-theme="dark"] .stats .stat-content .stat-label {
  color: var(--text-color);
  opacity: 0.8;
}

/* إرجاع باقي الأقسام للتخطيط الأصلي */
.about-content {
  text-align: right;
}

.achievements {
  margin-bottom: var(--spacing-xl);
  display: grid;
  gap: var(--spacing-lg);
}

.achievement-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
  text-align: right;
}

.achievement-item:hover {
  transform: translateX(-10px);
  box-shadow: var(--shadow-lg);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

.skill-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.skill-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

/* Statistics Section */
.stats {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--white);
}

[data-theme="dark"] .stats {
  background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
}

.stat-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: var(--transition-normal);
}

[data-theme="dark"] .stat-card {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-card:hover {
  transform: translateY(-10px);
  background: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .stat-card:hover {
  background: rgba(0, 0, 0, 0.3);
}

.stat-icon {
  width: 80px;
  height: 80px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
}

.stat-content .stat-number {
  display: block;
  font-size: var(--font-size-4xl);
  font-weight: 900;
  margin-bottom: var(--spacing-xs);
  color: var(--white);
}

[data-theme="dark"] .stats .stat-content .stat-number {
  color: var(--text-color);
}

.stat-content .stat-label {
  font-size: var(--font-size-lg);
  opacity: 0.9;
}

/* تحسين ألوان النصوص في الدارك مود */
[data-theme="dark"] .achievement-content h4 {
  color: var(--text-color);
}

[data-theme="dark"] .achievement-content p {
  color: var(--text-light);
}

[data-theme="dark"] .skills-title {
  color: var(--text-color);
}

[data-theme="dark"] .skill-item span {
  color: var(--text-color);
}

/* تظبيط ألوان الأيقونات */
.achievement-item i {
  font-size: var(--font-size-2xl);
  color: var(--primary-color);
  margin-top: var(--spacing-xs);
}

[data-theme="dark"] .achievement-item i {
  color: var(--secondary-color);
}

/* Lectures Section */
.lectures-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-2xl);
}

.lecture-card {
  background: var(--white);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  transition: var(--transition-slow);
  position: relative;
}

.lecture-card:hover {
  transform: translateY(-15px) scale(1.02);
  box-shadow: var(--shadow-2xl);
}

.card-header {
  position: relative;
  height: 250px;
  overflow: hidden;
}

.card-image-placeholder {
  position: relative;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  display: flex;
  align-items: center;
  justify-content: center;
}

.lecture-card.grade-1 .card-image-placeholder {
  background: linear-gradient(135deg, var(--bio-green), var(--bio-blue));
}

.lecture-card.grade-1 .placeholder-icon {
  color: var(--white);
  opacity: 0.9;
}

.lecture-card.grade-1 .card-overlay {
  background: linear-gradient(135deg, rgba(5, 150, 105, 0.9), rgba(14, 165, 233, 0.9));
}

.placeholder-icon {
  font-size: 4rem;
  color: var(--white);
  opacity: 0.8;
}

.card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.9), rgba(16, 185, 129, 0.9));
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-normal);
}

.lecture-card:hover .card-overlay {
  opacity: 1;
}

.grade-badge {
  background: var(--white);
  color: var(--primary-color);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-xl);
  font-weight: 900;
  font-size: var(--font-size-lg);
  box-shadow: var(--shadow-lg);
  animation: badgeBounce 2s ease-in-out infinite;
}

@keyframes badgeBounce {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

.card-glow {
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color), var(--bio-purple), var(--bio-orange));
  border-radius: var(--radius-2xl);
  opacity: 0;
  transition: var(--transition-normal);
  z-index: -1;
  animation: cardGlowRotate 3s linear infinite;
}

.lecture-card:hover .card-glow {
  opacity: 0.7;
}

@keyframes cardGlowRotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.card-content {
  padding: var(--spacing-2xl);
}

.card-title {
  font-size: var(--font-size-2xl);
  font-weight: 900;
  color: var(--text-color);
  margin-bottom: var(--spacing-md);
}

.card-description {
  color: var(--text-light);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
  font-size: var(--font-size-lg);
}

.card-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-light);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.feature i {
  color: var(--primary-color);
}

.card-progress {
  margin-bottom: var(--spacing-lg);
}

.progress-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  color: var(--text-color);
}

.card-progress .progress-bar {
  height: 8px;
  background: var(--gray-100);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.card-progress .progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-sm);
  transition: width 1s ease-out;
}

.card-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--white);
  padding: var(--spacing-lg) var(--spacing-xl);
  border-radius: var(--radius-xl);
  text-decoration: none;
  font-weight: 700;
  font-size: var(--font-size-lg);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  width: 100%;
  justify-content: center;
}

.card-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

.btn-effect {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: var(--transition-slow);
}

.card-btn:hover .btn-effect {
  left: 100%;
}

/* Testimonials Section */
.testimonials {
  background: var(--gray-50);
}

.testimonials-slider {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.testimonial-card {
  background: var(--white);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-lg);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.testimonial-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.testimonial-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-2xl);
}

.quote-icon {
  font-size: var(--font-size-3xl);
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
  opacity: 0.3;
}

.testimonial-text {
  font-size: var(--font-size-lg);
  line-height: 1.8;
  color: var(--text-color);
  margin-bottom: var(--spacing-xl);
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.author-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
}

.avatar-placeholder {
  font-size: var(--font-size-xl);
  color: var(--text-light);
}

.author-name {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: var(--spacing-xs);
}

.author-title {
  color: var(--text-light);
  font-size: var(--font-size-sm);
}

.slider-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
}

.slider-btn {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary-color);
  color: var(--white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  transition: var(--transition-normal);
}

.slider-btn:hover {
  background: var(--primary-dark);
  transform: scale(1.1);
}

.slider-dots {
  display: flex;
  gap: var(--spacing-sm);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gray-100);
  cursor: pointer;
  transition: var(--transition-fast);
}

[data-theme="dark"] .dot {
  background: var(--gray-200);
}

.dot.active {
  background: var(--primary-color);
  transform: scale(1.2);
}

/* FAQ Section */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition-normal);
}

.faq-item:hover {
  box-shadow: var(--shadow-md);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-xl);
  cursor: pointer;
  transition: var(--transition-fast);
}

.faq-question:hover {
  background: var(--gray-50);
}

.faq-question h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-color);
}

.faq-icon {
  font-size: var(--font-size-xl);
  color: var(--primary-color);
  transition: var(--transition-fast);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 200px;
}

.faq-answer p {
  padding: 0 var(--spacing-xl) var(--spacing-xl);
  color: var(--text-light);
  line-height: 1.7;
}

/* Contact Section */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: start;
}

.contact-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: var(--spacing-md);
}

.contact-description {
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: var(--spacing-xl);
}

.contact-methods {
  margin-bottom: var(--spacing-xl);
}

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  transition: var(--transition-normal);
}

.contact-method:hover {
  background: var(--gray-100);
  transform: translateX(10px);
}

.method-icon {
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: var(--font-size-lg);
}

.method-info h4 {
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: var(--spacing-xs);
}

.method-info p {
  color: var(--text-light);
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
}

.social-link {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  text-decoration: none;
  font-size: var(--font-size-lg);
  transition: var(--transition-normal);
}

.social-link.whatsapp {
  background: #25d366;
}
.social-link.facebook {
  background: #1877f2;
}
.social-link.youtube {
  background: #ff0000;
}
.social-link.telegram {
  background: #0088cc;
}

.social-link:hover {
  transform: translateY(-5px) scale(1.1);
}

.contact-form {
  background: var(--white);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid var(--gray-100);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  transition: var(--transition-fast);
  font-family: var(--font-family);
  background: var(--white);
  color: var(--text-color);
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group select,
[data-theme="dark"] .form-group textarea {
  background: var(--gray-100);
  border-color: var(--gray-200);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.submit-btn {
  width: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--white);
  padding: var(--spacing-lg);
  border: none;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-lg);
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  position: relative;
  overflow: hidden;
}

.submit-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

/* Footer */
.footer {
  background: var(--gray-900);
  color: var(--white);
  padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

[data-theme="dark"] .footer {
  background: var(--gray-100);
  color: var(--text-color);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.footer-logo .logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--bio-blue), var(--bio-green));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 900;
  position: relative;
}

.footer-logo .logo-icon::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  bottom: -1px;
  background: linear-gradient(45deg, var(--bio-blue), var(--bio-green), var(--bio-purple));
  border-radius: var(--radius-lg);
  z-index: -1;
  animation: logoRotate 6s linear infinite;
}

.footer-logo .logo-icon i {
  font-size: var(--font-size-lg);
  z-index: 2;
}

.footer-logo .logo-text {
  font-size: var(--font-size-lg);
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-theme="dark"] .footer-logo .logo-text {
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-description {
  color: #d1d5db;
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

[data-theme="dark"] .footer-description {
  color: var(--text-light);
}

.footer-social {
  display: flex;
  gap: var(--spacing-sm);
}

.footer-social .social-link {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  text-decoration: none;
  transition: var(--transition-normal);
}

[data-theme="dark"] .footer-social .social-link {
  background: var(--gray-200);
  color: var(--text-color);
}

.footer-social .social-link:hover {
  background: var(--primary-color);
  color: var(--white);
  transform: translateY(-3px);
}

.footer-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--white);
}

[data-theme="dark"] .footer-title {
  color: var(--text-color);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: #d1d5db;
  text-decoration: none;
  transition: var(--transition-fast);
}

[data-theme="dark"] .footer-links a {
  color: var(--text-light);
}

.footer-links a:hover {
  color: var(--primary-color);
  transform: translateX(5px);
}

.footer-contact p {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: #d1d5db;
  margin-bottom: var(--spacing-sm);
}

[data-theme="dark"] .footer-contact p {
  color: var(--text-light);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid #374151;
  color: #9ca3af;
}

[data-theme="dark"] .footer-bottom {
  border-top: 1px solid var(--gray-200);
  color: var(--text-light);
}

/* Animations */
@keyframes slideInLeft {
  0% {
    opacity: 0;
    transform: translateX(-100px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  0% {
    opacity: 0;
    transform: translateX(100px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInUp {
  0% {
    opacity: 0;
    transform: translateY(50px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive Design */




/* Scroll Animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s ease;
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* Loading States */
.loading {
  opacity: 0;
  animation: fadeIn 1s ease-out forwards;
}

@keyframes fadeIn {
  to {
    opacity: 1;
  }
}

/* Login Page Specific Styles */
.login.section {
  min-height: calc(100vh - 80px - 200px); /* Adjust for header and footer height */
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 100px; /* To account for fixed header */
  padding-bottom: 50px;
}

.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.login-form-wrapper {
  background: var(--white);
  padding: var(--spacing-3xl);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  max-width: 450px;
  width: 100%;
  text-align: center;
  position: relative;
  overflow: hidden;
  opacity: 1; /* Initial state for animation */
  transform: translateY(50px); /* Initial state for animation */
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

[data-theme="dark"] .login-form-wrapper {
  background: var(--gray-100);
}

.login-form-wrapper.loaded {
  opacity: 1;
  transform: translateY(0);
}

.login-title {
  font-size: var(--font-size-3xl);
  font-weight: 900;
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: slideInUp 0.8s ease-out;
}

.login-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-light);
  margin-bottom: var(--spacing-2xl);
  animation: slideInUp 0.8s ease-out 0.2s both;
}

.login-form .form-group {
  text-align: right;
}

.login-form .form-group label {
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-xs);
}

.login-form .form-group input {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
}

.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

.remember-me {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.remember-me input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary-color);
  cursor: pointer;
}

.forgot-password {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition-fast);
}

.forgot-password:hover {
  text-decoration: underline;
}

.login-submit-btn {
  width: 100%;
  padding: var(--spacing-lg);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xl);
}

.signup-link {
  color: var(--text-light);
  font-size: var(--font-size-base);
}

.signup-link a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition-fast);
}

.signup-link a:hover {
  text-decoration: underline;
}

/* Animation delays for form elements */
.animate-delay-1 {
  animation: slideInUp 0.8s ease-out 0.4s both;
}
.animate-delay-2 {
  animation: slideInUp 0.8s ease-out 0.6s both;
}
.animate-delay-3 {
  animation: slideInUp 0.8s ease-out 0.8s both;
}
.animate-delay-4 {
  animation: slideInUp 0.8s ease-out 1.0s both;
}
.animate-delay-5 {
  animation: slideInUp 0.8s ease-out 1.2s both;
}

/* Adjustments for mobile */
@media (max-width: 480px) {
  .login-form-wrapper {
    padding: var(--spacing-2xl);
  }

  .login-title {
    font-size: var(--font-size-2xl);
  }

  .login-subtitle {
    font-size: var(--font-size-base);
  }

  .form-options {
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: flex-end; /* Align to right in RTL */
  }

  .remember-me {
    width: 100%;
    justify-content: flex-end; /* Align to right in RTL */
  }
}

/* Register Page Specific Styles */
.register.section {
  min-height: calc(100vh - 80px - 200px); /* Adjust for header and footer height */
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 100px; /* To account for fixed header */
  padding-bottom: 50px;
}

.register-container {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.register-form-wrapper {
  background: var(--white);
  padding: var(--spacing-3xl);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  max-width: 450px;
  width: 100%;
  text-align: center;
  position: relative;
  overflow: hidden;
  opacity: 1; /* Initial state for animation */
  transform: translateY(50px); /* Initial state for animation */
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

[data-theme="dark"] .register-form-wrapper {
  background: var(--gray-100);
}

.register-form-wrapper.loaded {
  opacity: 1;
  transform: translateY(0);
}

.register-title {
  font-size: var(--font-size-3xl);
  font-weight: 900;
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: slideInUp 0.8s ease-out;
}

.register-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-light);
  margin-bottom: var(--spacing-2xl);
  animation: slideInUp 0.8s ease-out 0.2s both;
}

.register-form .form-group {
  text-align: right;
}

.register-form .form-group label {
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-xs);
}

.register-form .form-group input {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
}

.register-submit-btn {
  width: 100%;
  padding: var(--spacing-lg);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xl);
}

.login-link {
  color: var(--text-light);
  font-size: var(--font-size-base);
}

.login-link a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition-fast);
}

.login-link a:hover {
  text-decoration: underline;
}

/* Animation delays for form elements */
.register-form .animate-delay-1 {
  animation-delay: 0.4s;
}
.register-form .animate-delay-2 {
  animation-delay: 0.6s;
}
.register-form .animate-delay-3 {
  animation-delay: 0.8s;
}
.register-form .animate-delay-4 {
  animation-delay: 1.0s;
}
.register-form .animate-delay-5 {
  animation-delay: 1.2s;
}
.register-form .animate-delay-6 {
  animation-delay: 1.4s;
}

/* Adjustments for mobile */
@media (max-width: 480px) {
  .register-form-wrapper {
    padding: var(--spacing-2xl);
  }

  .register-title {
    font-size: var(--font-size-2xl);
  }

  .register-subtitle {
    font-size: var(--font-size-base);
  }
}

/* Subscription Section Styles */
.subscription.section {
  padding-top: 100px; /* Adjust for fixed header */
  padding-bottom: 50px;
}

.subscription-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-2xl);
  justify-content: center;
  align-items: stretch;
}

.subscription-card {
  background: var(--white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  padding: var(--spacing-2xl);
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
  opacity: 0; /* Initial state for animation */
  transform: translateY(50px); /* Initial state for animation */
}

[data-theme="dark"] .subscription-card {
  background: var(--gray-100);
}

.subscription-card.loaded {
  opacity: 1;
  transform: translateY(0);
}

.subscription-card.animate-delay-1 {
  transition-delay: 0.2s;
}
.subscription-card.animate-delay-2 {
  transition-delay: 0.4s;
}
.subscription-card.animate-delay-3 {
  transition-delay: 0.6s;
}

.subscription-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-2xl);
}

.subscription-card.featured {
  border: 3px solid var(--primary-color);
  transform: scale(1.05);
  box-shadow: 0 0 30px rgba(37, 99, 235, 0.3);
}

[data-theme="dark"] .subscription-card.featured {
  border-color: var(--secondary-color);
  box-shadow: 0 0 30px rgba(34, 211, 238, 0.3);
}

.subscription-card.featured:hover {
  transform: translateY(-15px) scale(1.07);
}

.subscription-card .card-header {
  position: relative;
  padding-bottom: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--gray-100);
}

[data-theme="dark"] .subscription-card .card-header {
  border-bottom-color: var(--gray-200);
}

.subscription-card .card-title {
  font-size: var(--font-size-2xl);
  font-weight: 900;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subscription-card .card-price {
  font-size: var(--font-size-5xl);
  font-weight: 900;
  color: var(--text-color);
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: var(--spacing-xs);
}

.subscription-card .price-amount {
  font-size: var(--font-size-5xl);
}

.subscription-card .price-currency {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-light);
}

.subscription-card .price-period {
  font-size: var(--font-size-base);
  color: var(--text-light);
}

.subscription-card .badge {
  position: absolute;
  top: -15px;
  right: -15px;
  background: var(--accent-color);
  color: var(--white);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 700;
  transform: rotate(45deg);
  transform-origin: top right;
  box-shadow: var(--shadow-md);
}

.subscription-card .card-content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.subscription-card .card-features {
  list-style: none;
  margin-bottom: var(--spacing-xl);
  text-align: right;
}

.subscription-card .card-features li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  color: var(--text-color);
  font-size: var(--font-size-lg);
}

.subscription-card .card-features li i {
  color: var(--secondary-color);
  font-size: var(--font-size-xl);
}

.subscription-card .card-features li.disabled {
  color: var(--text-light);
  opacity: 0.6;
  text-decoration: line-through;
}

.subscription-card .card-features li.disabled i {
  color: var(--gray-200);
}

.subscription-card .subscribe-btn {
  width: 100%;
  margin-top: auto; /* Push button to bottom */
}

/* Responsive adjustments for subscription page */
@media (max-width: 768px) {
  .subscription-grid {
    grid-template-columns: 1fr;
  }
  .subscription-card.featured {
    transform: scale(1); /* Remove scale on mobile for featured card */
  }
  .subscription-card.featured:hover {
    transform: translateY(-10px) scale(1.02); /* Adjust hover for mobile */
  }
}

/* Lessons Section Styles */
.lessons.section {
  padding-top: 100px; /* Adjust for fixed header */
  padding-bottom: 50px;
}

.lessons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
    /* width: 25%; */
}

.lesson-card {
  background: var(--white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  opacity: 0; /* Initial state for animation */
  transform: translateY(50px); /* Initial state for animation */
  /*width: 30%;*/
}

[data-theme="dark"] .lesson-card {
  background: var(--gray-100);
}

.lesson-card.loaded {
  opacity: 1;
  transform: translateY(0);
}

.lesson-card.animate-delay-1 {
  transition-delay: 0.2s;
}
.lesson-card.animate-delay-2 {
  transition-delay: 0.3s;
}
.lesson-card.animate-delay-3 {
  transition-delay: 0.4s;
}
.lesson-card.animate-delay-4 {
  transition-delay: 0.5s;
}
.lesson-card.animate-delay-5 {
  transition-delay: 0.6s;
}
.lesson-card.animate-delay-6 {
  transition-delay: 0.7s;
}

.lesson-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-2xl);
}

.lesson-thumbnail {
    position: relative;

    overflow: hidden;
    height: 200px;
}

.lesson-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.lesson-title {
  font-size: var(--font-size-2xl);
  font-weight: 900;
  color: var(--text-color);
  margin-bottom: var(--spacing-md);
}

.lesson-description {
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
  flex-grow: 1; /* Allows description to take available space */
}
.lesson-content {
    padding: 1.5rem;
}
.lesson-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

.lesson-meta span {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.lesson-meta i {
  font-size: var(--font-size-base);
  color: var(--primary-color);
}

.watch-lesson-btn {
  width: 100%;
  padding: var(--spacing-lg);
  font-size: var(--font-size-lg);
}

/* Responsive adjustments for lessons page */
@media (max-width: 480px) {
  .lessons-grid {
    grid-template-columns: 1fr;
  }
  .lesson-card {
    padding: 0; /* Remove padding from card itself, content has padding */
  }
  .lesson-content {
    padding: var(--spacing-lg);
  }
  .lesson-title {
    font-size: var(--font-size-xl);
  }
  .lesson-description {
    font-size: var(--font-size-base);
  }
}

/* Lecture Details Page Specific Styles (from user's Blade code context) */
.lecture-details.section {
  padding-top: 100px; /* Adjust for fixed header */
  padding-bottom: 50px;
}

/* Removed .heading styles as it's no longer used for the main title button */

/* Animated Button Styles (retained for general use if needed, but not for the main toggle) */
.button {
  --main-focus: #2286ff;
  --font-color: #323232;
  --bg-color-sub: #dedede;
  --bg-color: #eee;
  --main-color: #363636;
  position: relative;
  width: 150px;
  height: 40px;
  cursor: pointer;
  display: flex;
  align-items: center;
  border: none;
  background-color: var(--bg-color);
  border-radius: 10px;
  box-shadow: 4px 4px var(--main-color);
  font-size: 15px;
  font-weight: 600;
  color: var(--font-color);
  transition: width 0.3s ease-in-out;
}

[data-theme="dark"] .button {
  --font-color: #f9fafb;
  --bg-color-sub: #475569;
  --bg-color: #334155;
  --main-color: #d1d5db;
}

.button:hover {
  width: 160px; /* Slightly expand on hover */
}

.button .actual-text {
  width: 100%;
  text-align: center;
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-color);
  transition: all 0.3s ease-in-out;
}

.button .hover-text,
.button .hhover-text {
  position: absolute;
  box-sizing: border-box;
  content: attr(data-text);
  color: var(--main-focus);
  width: 0%;
  inset: 0;
  border-radius: 10px;
  background-color: var(--bg-color-sub);
  -webkit-text-stroke: 1px var(--main-focus);
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  transition: width 0.3s ease-in-out;
}

.button:hover .hover-text,
.button:hover .hhover-text {
  width: 100%;
}

.button:active {
  transform: translateY(2px);
  box-shadow: 2px 2px var(--main-color);
}

/* Removed .lec, .lec .show, .lec .hide, .lec .v, .lec .org, .lec .title styles */

.lecture-toggle-wrapper {
  text-align: center;
  margin-top: var(--spacing-2xl); /* Adjust spacing as needed */
  margin-bottom: var(--spacing-2xl);
}

.toggle-lecture-content-btn {
  /* Inherits from .btn .btn-primary */
  padding: var(--spacing-lg) var(--spacing-3xl); /* Make it a bit larger */
  font-size: var(--font-size-lg);
}

.container-vid {
  max-width: 1120px;
  margin: 0 auto; /* Center the container */
  display: flex;
  flex-direction: column; /* Default to column for mobile */
  gap: var(--spacing-2xl);
  padding: var(--spacing-xl) 0;
}

@media (min-width: 992px) {
  /* Adjust breakpoint as needed for desktop layout */
  .container-vid {
    flex-direction: row; /* Row layout on larger screens */
    align-items: flex-start; /* Align items to the top */
  }
}

.container-vid .lecture-main-content {
  /* Renamed from .main to avoid conflict with main tag */
  flex: 3; /* Take more space for video/exam */
  min-width: 0; /* Allow content to shrink */
}

.container-vid .list-vid {
  flex: 1; /* Take less space for list */
  min-width: 250px; /* Minimum width for the list */
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-lg);
}

[data-theme="dark"] .container-vid .list-vid {
  background: var(--gray-100);
}

.list-vid .vid {
  background: var(--gray-50);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  transition: var(--transition-fast);
}

[data-theme="dark"] .list-vid .vid {
  background: var(--gray-200);
}

.list-vid .vid:hover {
  background: var(--gray-100);
  transform: translateX(5px);
}

[data-theme="dark"] .list-vid .vid:hover {
  background: var(--gray-300);
}

.list-vid .vid a {
  text-decoration: none;
  color: var(--text-color);
  display: block;
}

.list-vid .vid h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
}

/* Exam Page Specific Styles */
.exam-page.section {
  min-height: calc(100vh - 80px - 200px); /* Adjust for header and footer height */
  display: flex;
  align-items: flex-start; /* كان center */
  justify-content: center;
  /* padding-top: 100px; To account for fixed header */
  padding-bottom: 50px;
    background: var(--gray-50);

}

.exam-container {
  background: var(--white);
  padding: var(--spacing-3xl);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  max-width: 800px;
  width: 100%;
  text-align: center;
  position: relative;
  overflow: hidden;
}

[data-theme="dark"] .exam-container {
  background: var(--gray-100);
}

.exam-timer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-2xl);
  background: var(--gray-50);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .exam-timer {
  background: var(--gray-200);
  color: var(--secondary-color);
}

.exam-timer i {
  font-size: var(--font-size-2xl);
}

.exam-card {
  /* background: var(--gray-50); */
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
  box-shadow: var(--shadow-md);
  text-align: right;
}

[data-theme="dark"] .exam-card {
  background: var(--gray-200);
}

.question-number {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
}

.question-text {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: var(--spacing-xl);
  line-height: 1.5;
}

.options-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.option-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  background: var(--white);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: var(--transition-fast);
  border: 2px solid transparent;
}

[data-theme="dark"] .option-item {
  background: var(--gray-100);
}

.option-item:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
}

.option-item input[type="radio"] {
  width: 20px;
  height: 20px;
  accent-color: var(--primary-color);
  cursor: pointer;
  flex-shrink: 0; /* Prevent radio button from shrinking */
}

.option-item label {
  flex-grow: 1;
  font-size: var(--font-size-lg);
  color: var(--text-color);
  cursor: pointer;
}

.exam-navigation {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.exam-navigation .btn {
  flex: 1;
  justify-content: center;
}

.results-section {
  background: var(--gray-50);
  /* padding: var(--spacing-3xl); */
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  text-align: center;
  margin-bottom: 5rem;
}
@media screen and (min-width: 768px) {
  .results-section {
    padding: var(--spacing-2xl);
  }
  
}

[data-theme="dark"] .results-section {
  background: var(--gray-200);
}

.results-title {
  font-size: var(--font-size-3xl);
  font-weight: 900;
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
}

.score-display {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: var(--spacing-xl);
}

.score-display span {
  color: var(--secondary-color);
}

.answers-review {
  text-align: right;
  margin-bottom: var(--spacing-2xl);
}

.review-item {
  background: var(--white);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-md);
}

[data-theme="dark"] .review-item {
  background: var(--gray-100);
}

.review-question {
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: var(--spacing-sm);
}

.review-your-answer {
  color: var(--text-light);
  margin-bottom: var(--spacing-xs);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-xs);
}

.review-your-answer.correct {
  color: var(--secondary-color);
}

.review-your-answer.incorrect {
  color: #ef4444; /* Red color for incorrect */
}

.review-your-answer i {
  font-size: var(--font-size-base);
}

.review-correct-answer {
  color: var(--primary-color);
  font-weight: 600;
}

.retake-exam-btn {
  width: auto;
  margin: 0 auto;
}

/* Utility class for hiding */
.none {
  display: none !important;
}

/* Responsive adjustments for exam page */
@media (max-width: 768px) {
  .exam-container {
    padding: var(--spacing-2xl);
  }
  .exam-timer {
    font-size: var(--font-size-lg);
  }
  .question-text {
    font-size: var(--font-size-xl);
  }
  .option-item label {
    font-size: var(--font-size-base);
  }
  .exam-navigation .btn {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
  }
  .results-title {
    font-size: var(--font-size-2xl);
  }
  .score-display {
    font-size: var(--font-size-xl);
  }
}
@media (max-width: 768px) {
  .exam-container {
    padding: var(--spacing-xl); /* تصغير البادينج شوية للموبايل */
  }

  .exam-timer {
    font-size: var(--font-size-base);
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .question-text {
    font-size: var(--font-size-lg);
  }

  .option-item label {
    font-size: var(--font-size-sm);
  }

  .exam-navigation .btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
  }

  .results-section {
    margin-top: var(--spacing-xl); /* مسافة فوق النتائج */
    padding: var(--spacing-lg); /* padding إضافي علشان التناسق */
  }

  .results-title {
    font-size: var(--font-size-xl);
  }

  .score-display {
    font-size: var(--font-size-lg);
  }

  .review-item {
    padding: var(--spacing-md);
  }

  .review-question {
    font-size: var(--font-size-base);
  }

  .review-your-answer,
  .review-correct-answer {
    font-size: var(--font-size-sm);
  }
}
/* تحسين الدارك مود للامتحان */
[data-theme="dark"] .exam-page.section {
  background: var(--gray-100);
}

[data-theme="dark"] .exam-container {
  background: var(--gray-200);
  color: var(--text-color);
}

[data-theme="dark"] .exam-timer {
  background: var(--gray-200);
  color: var(--secondary-color);
}

[data-theme="dark"] .exam-card {
  background: var(--gray-200);
  color: var(--text-color);
}

[data-theme="dark"] .option-item {
  background: var(--gray-100);
  color: var(--text-color);
}

[data-theme="dark"] .option-item label {
  color: var(--text-color);
}

[data-theme="dark"] .option-item:hover {
  border-color: var(--secondary-color);
  background: var(--gray-200);
}

[data-theme="dark"] .results-section {
  background: var(--gray-200);
  color: var(--text-color);
}

[data-theme="dark"] .review-item {
  background: var(--gray-100);
  color: var(--text-color);
}

[data-theme="dark"] .review-your-answer.correct {
  color: var(--secondary-color);
}

[data-theme="dark"] .review-your-answer.incorrect {
  color: #ef4444;
}

[data-theme="dark"] .review-correct-answer {
  color: var(--primary-color);
}
/* تحسين إضافي للدارك مود للامتحان */
[data-theme="dark"] .exam-container,
[data-theme="dark"] .exam-card,
[data-theme="dark"] .option-item,
[data-theme="dark"] .review-item {
  box-shadow: 0 4px 16px rgba(0,0,0,0.7);
  border: 1px solid var(--gray-200);
}

[data-theme="dark"] .option-item input[type="radio"] {
  accent-color: var(--secondary-color);
}

[data-theme="dark"] .option-item.selected,
[data-theme="dark"] .option-item:active {
  border-color: var(--secondary-color);
  background: var(--gray-900);
}

[data-theme="dark"] .question-number {
  color: var(--secondary-color);
}

[data-theme="dark"] .question-text {
  color: var(--text-color);
}

[data-theme="dark"] .review-question {
  color: var(--text-color);
}

[data-theme="dark"] .score-display {
  color: var(--secondary-color);
}

[data-theme="dark"] .exam-navigation .btn {
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
  color: var(--white);
}

[data-theme="dark"] .exam-navigation .btn:hover {
  background: var(--primary-dark);
}

[data-theme="dark"] .results-title {
  color: var(--secondary-color);
}
[data-theme="dark"] .previous-attempts-table {
  background: var(--gray-100);
  color: var(--text-color);
}
[data-theme="dark"] .previous-attempts-table th,
[data-theme="dark"] .previous-attempts-table td {
  background: var(--gray-100);
  color: var(--text-color);
  border-color: var(--gray-200);
}

/* Enhanced UI Components */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease-in-out;
  border: 1px solid rgba(var(--primary-rgb), 0.1);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
  border-color: rgba(var(--primary-rgb), 0.2);
}

.card h2, .card h3 {
  color: var(--heading-color);
  margin-bottom: var(--spacing-4);
  font-weight: 600;
  transition: color 0.3s ease;
  text-align: center;
  width: 100%;
}

.card p {
  color: var(--text-color);
  line-height: 1.7;
  margin-bottom: var(--spacing-4);
  text-align: center;
  width: 100%;
}

/* Interactive Elements */
.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--white);
  box-shadow: var(--shadow-xl);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.btn-primary:hover {
  transform: translateY(-5px) scale(1.02);
  box-shadow: var(--shadow-2xl);
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

.btn-primary:active {
  transform: translateY(-2px) scale(0.98);
  box-shadow: var(--shadow-xl);
}

/* Text Enhancements */
.text-primary {
  position: relative;
  transition: color 0.3s ease;
  color: var(--primary-color);
}

.text-primary:hover {
  color: var(--primary-dark);
}

.dark .text-primary {
  color: var(--primary-color);
  text-shadow: 0 0 15px rgba(var(--primary-rgb), 0.3);
}
/*  */






@media (max-width: 767px) {
  .section {
    padding: var(--spacing-2xl) 0;
  }
  
  .about-container,
  .contact-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .about-img-placeholder {
    height: 400px;
  }
  
  .lectures-grid,
  .testimonials-slider,
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .lecture-card,
  .testimonial-card,
  .stat-card {
    max-width: 100%;
  }
  
  .faq-item {
    padding: var(--spacing-md);
  }
  
  .faq-question h3 {
    font-size: var(--font-size-base);
  }
}

@media screen and (max-width: 767px) {
  .nav-menu {
    position: absolute;
    top: 80px;
    right: -100%;
    width: 300px;
    height: auto;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    z-index: 1000;
  }

  .nav-list {
    flex-direction: column;
  }

  .nav-toggle {
    display: flex;
  }
  .about-image{
    display: none;
  }
}

[data-theme="dark"] .nav-menu {
  background: rgba(15, 23, 42, 0.98);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  transition: inherit;
}

[data-theme="dark"] .nav-link {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-color);
  transition: all 0.3s ease;
}

[data-theme="dark"] .nav-link:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateX(5px);
}

.nav-list {
  display: flex;
  gap: 1rem;
}

[data-theme="dark"] .nav-list {
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  /* Removed flex-direction: column for mobile as subtitle is gone */
  text-align: center; /* Keep text centered for smaller screens if logo is single line */
}

@media (min-width: 768px) {
  .logo-container {
    flex-direction: row;
    text-align: left;
  }
}

@media screen and (max-width: 480px) {
  .nav-menu {
    width: calc(100% - 40px);
  }
  
  .nav-menu.show-menu {
    right: 50%;
    transform: translateX(50%);
  }
}
body{
  margin: 0rem;
}