/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700;800;900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@400;500;600;700;800;900&display=swap');

/* ===========================
   نظام الألوان المتقدم والمنسق
=========================== */
:root {
  /* الألوان الأساسية - Modern & Professional */
  --primary-color: #6366F1;        /* Indigo - للعناصر الرئيسية */
  --secondary-color: #8B5CF6;      /* Purple - للعناصر الثانوية */
  --accent-color: #10B981;         /* Emerald - للنجاح والتأكيدات */
  --success-color: #10B981;        /* Green للنجاح */
  --error-color: #EF4444;          /* Red للأخطاء */
  --warning-color: #F59E0B;        /* Amber للتحذيرات */
  --info-color: #3B82F6;           /* Blue للمعلومات */

  /* ألوان النصوص - Light Mode */
  --text-primary: #111827;         /* Gray-900 */
  --text-secondary: #51634b;       /* Gray-600 */
  --text-muted: #6B7280;           /* Gray-500 */
  --text-white: #FFFFFF;           /* Pure white */

  /* ألوان الخلفيات - Light Mode */
  --bg-primary: #FFFFFF;           /* White */
  --bg-secondary: #F9FAFB;         /* Gray-50 */
  --bg-tertiary: #F3F4F6;          /* Gray-100 */
  --bg-card: #FFFFFF;              /* Card background */
  --bg-hover: #F3F4F6;             /* Hover state */

  /* ألوان الحدود */
  --border-color: #E5E7EB;         /* Gray-200 */
  --border-light: #F3F4F6;         /* Gray-100 */
  --border-medium: #D1D5DB;        /* Gray-300 */
  --border-dark: #9CA3AF;          /* Gray-400 */

  /* الظلال - Soft & Natural */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* الانتقالات - Smooth & Natural */
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Border Radius - Modern & Soft */
  --radius-sm: 4px;
  --radius: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-full: 9999px;

/* التدرجات - Modern Gradients */
--gradient-primary: linear-gradient(135deg, #4C1D95 0%, #7C3AED 100%);
--gradient-secondary: linear-gradient(135deg, #8B5CF6 0%, #EC4899 100%);
--gradient-accent: linear-gradient(135deg, #10B981 0%, #059669 100%);
--gradient-warm: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%);
--gradient-cool: linear-gradient(135deg, #3B82F6 0%, #6366F1 100%);
--gradient-hero: linear-gradient(135deg, #4C1D95 0%, #7C3AED 50%, #A855F7 100%);
}

/* ===========================
   Dark Mode - نظام الوضع الداكن المحسّن
=========================== */
[data-theme="dark"] {
  /* ألوان النصوص - Dark Mode */
  --text-primary: #F9FAFB;         /* Gray-50 */
  --text-secondary: #E5E7EB;       /* Gray-200 */
  --text-muted: #D1D5DB;           /* Gray-300 */
  --text-white: #FFFFFF;           /* Pure white */

  /* ألوان الخلفيات - Dark Mode */
  --bg-primary: #0F172A;           /* Slate-900 */
  --bg-secondary: #1E293B;         /* Slate-800 */
  --bg-tertiary: #334155;          /* Slate-700 */
  --bg-card: #1E293B;              /* Card background */
  --bg-hover: #334155;             /* Hover state */

  /* ألوان الحدود - Dark Mode */
  --border-color: #334155;         /* Slate-700 */
  --border-light: #1E293B;         /* Slate-800 */
  --border-medium: #475569;        /* Slate-600 */
  --border-dark: #64748B;          /* Slate-500 */

  /* الظلال - Dark Mode */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.4), 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.6);

  /* تعديل الألوان الأساسية للوضع الداكن */
  --primary-color: #818CF8;        /* Indigo-400 - أفتح للقراءة */
  --secondary-color: #A78BFA;      /* Purple-400 */
  --accent-color: #34D399;         /* Emerald-400 */
  --success-color: #34D399;
  --error-color: #F87171;          /* Red-400 */
  --warning-color: #FBBF24;        /* Amber-400 */
  --info-color: #60A5FA;           /* Blue-400 */
}

/* ===========================
   الأساسيات العامة
=========================== */
* {
  font-family: 'Poppins', sans-serif;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
  scroll-padding-top: 2rem;
}

body {
  color: var(--text-primary);
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  line-height: 1.6;
  font-size: 16px;
  direction: rtl;
  transition: background-color 0.3s ease, color 0.3s ease;
  font-weight: 400;
}

main {
  flex: 1;
}

img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
}

section {
  padding: 4rem 0 3rem;
}

/* ===========================
   Typography - تحسين الطباعة
=========================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.8;
}

strong, b {
  font-weight: 600;
  color: var(--text-primary);
}

/* ===========================
   الروابط
=========================== */
a {
  text-decoration: none;
  color: var(--primary-color);
  transition: var(--transition);
}

a:hover {
  color: var(--secondary-color);
  opacity: 0.9;
}

/* ===========================
   الأزرار - Modern Button System
=========================== */
button,
.btn {
  background: var(--gradient-primary);
  border-radius: var(--radius);
  padding: 0.75rem 1.5rem;
  border: none;
  color: var(--text-white);
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

button:hover,
.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

button:active,
.btn:active {
  transform: scale(0.98);
  transition: var(--transition-fast);
}

/* Modern Button Variants */
.btn-modern {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  border-radius: 12px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  border: 1px solid rgba(255, 255, 255, 0.2);
  cursor: pointer;
  backdrop-filter: blur(10px);
}

.btn-primary-modern {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  box-shadow: var(--shadow);
}

.btn-primary-modern:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-secondary-modern {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-white);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-secondary-modern:hover {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* Light mode button text colors */
.btn-primary-modern,
.btn-secondary-modern {
  color: var(--text-primary);
}

[data-theme="dark"] .btn-primary-modern,
[data-theme="dark"] .btn-secondary-modern {
  color: white;
}

/* ===========================
   Cards - Modern Card System
=========================== */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: 2.5rem;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-2xl);
}

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

/* ===========================
   الحاوية العامة
=========================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding: 0 1rem;
}

/* ===========================
   الهيدر والنافبار - Modern Header
=========================== */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  padding: 0 1rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

header.scrolled {
  background: var(--bg-secondary);
  box-shadow: var(--shadow-lg);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 0;
  font-weight: 500;
  transition: var(--transition);
}

nav span {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: .5rem;
  transition: var(--transition);
  position: relative;
}

nav span:hover {
  transform: scale(1.05);
}

nav span svg {
  height: 1.8rem;
  width: 1.8rem;
  transition: var(--transition);
}

nav span:hover svg {
  transform: rotate(5deg) scale(1.1);
}

nav ul {
  display: flex;
  column-gap: 1.2rem;
  align-items: center;
  list-style: none;
}

nav li {
  list-style: none;
  position: relative;
}

nav a {
  color: var(--text-primary);
  font-weight: 500;
  transition: var(--transition);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
}

nav a:hover {
  color: var(--primary-color);
  background: var(--bg-hover);
  transform: translateY(-1px);
}

/* ===========================
   Mobile Menu
=========================== */
.mob-icons {
  display: none;
}

.menubtn {
  display: block;
  cursor: pointer;
  color: var(--primary-color);
  transition: var(--transition);
}

.menubtn:hover {
  transform: scale(1.1);
}

.menuClosebtn {
  display: none;
}

.mob-menu {
  display: none;
  z-index: 999;
  position: absolute;
  top: 5rem;
  right: 2rem;
  padding: .6rem 0;
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-color);
}

.mob-menu ul {
  list-style: none;
}

.mob-menu ul li {
  padding: .5rem 1.2rem;
  transition: var(--transition);
}

.mob-menu ul li:hover {
  background-color: var(--bg-hover);
  border-radius: var(--radius);
}

/* ===========================
   Desktop Categories
=========================== */
.desktop-categories {
  display: none;
  z-index: 998;
  position: absolute;
  top: 5rem;
  right: 23rem;
  padding: .6rem 0;
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-color);
}

.desktop-categories.show {
  display: block;
}

.desktop-categories ul {
  list-style: none;
}

.desktop-categories ul li {
  padding: .5rem 1.2rem;
  transition: var(--transition);
}

.desktop-categories ul li:hover {
  background-color: var(--bg-hover);
  border-radius: var(--radius);
}

/* ===========================
   Footer - Modern Footer
=========================== */
footer {
  border-top: 1px solid var(--border-color);
  margin-top: auto;
  background-color: var(--bg-secondary);
  padding: 2rem 0;
}

.footer-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  grid-gap: 2rem;
  padding: 2rem 1rem;
}

footer ul {
  margin-top: 1rem;
  list-style: none;
}

footer li {
  list-style: none;
  padding: .3rem 0;
  transition: var(--transition);
}

footer li:hover {
  text-decoration: underline;
  color: var(--primary-color);
}

footer span {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
}

.foot-socials {
  display: flex;
  column-gap: .6rem;
  margin-top: 1rem;
}

.foot-socials a {
  color: var(--primary-color);
  font-size: 1.2rem;
  transition: var(--transition);
}

.foot-socials a:hover {
  color: var(--secondary-color);
  transform: translateY(-2px);
}

/* ===========================
   Hero Section - Enhanced Modern Hero
=========================== */
.hero-section {
  background: var(--gradient-primary);
  position: relative;
  overflow: hidden;
  padding: 3rem 1rem 1.5rem;
  color: var(--text-white);
  min-height: 40vh;
  display: flex;
  align-items: center;
  margin-bottom: -2px;
  clip-path: polygon(0 0, 100% 0, 100% 95%, 0% 100%);
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.1;
  z-index: 1;
}

/* Animated Background Particles */
.hero-section::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(120, 119, 198, 0.2) 0%, transparent 50%);
  animation: particleFloat 20s ease-in-out infinite;
  z-index: 1;
}

@keyframes particleFloat {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
    opacity: 0.3;
  }
  33% {
    transform: translateY(-20px) rotate(120deg);
    opacity: 0.6;
  }
  66% {
    transform: translateY(10px) rotate(240deg);
    opacity: 0.4;
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-text h1 {
  font-size: 4.5rem;
  line-height: 1.2;
  font-weight: 900;
  margin-bottom: 2.5rem;
  color: #1F2937;
  text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  font-family: 'Cairo', sans-serif;
}

.hero-text strong {
  color: rgba(255, 255, 255, 0.95);
  font-weight: 500;
  display: block;
  margin-bottom: 1rem;
}

.hero-text p {
  font-size: 1rem;
  line-height: 1.5;
  margin-bottom: 1.5rem;
  color: rgba(255, 255, 255, 0.9);
}

.hero-cta-btn {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 0.25rem;
}

.hero-cta-btn .btn {
  position: relative;
  overflow: hidden;
  animation: buttonPulse 2s ease-in-out infinite;
}

.hero-cta-btn .btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.hero-cta-btn .btn:hover::before {
  left: 100%;
}

@keyframes buttonPulse {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  }
  50% {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  }
}

.hero-img {
  text-align: center;
}

.hero-img img {
  max-width: 100%;
  height: auto;
  border-radius: 50%;
  box-shadow: var(--shadow-2xl);
  transition: var(--transition);
}

.hero-img img:hover {
  transform: scale(1.05);
}

/* ===========================
   Inputs - Modern Form Inputs
=========================== */
input[type=text],
input[type=email],
input[type=password],
textarea,
select {
  outline: none;
  border: 2px solid var(--border-color);
  border-radius: var(--radius);
  background-color: var(--bg-card);
  color: var(--text-primary);
  padding: .75rem;
  font-size: 1rem;
  transition: var(--transition);
  width: 100%;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* ===========================
   Course Categories - Flip Cards
=========================== */
.home-course-categories {
  background: var(--bg-secondary);
  padding: 6rem 0;
  margin-top: -1px;
}

.home-course-categories h2 {
  font-size: 2.5rem;
  line-height: 2.5rem;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  text-align: center;
  font-weight: 800;
}

.home-course-categories p {
  text-align: center;
  margin: 1.5rem 0 3rem;
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.course-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  grid-gap: 1.5rem;
  padding: 1.5rem 0;
}

.flip-card {
  background-color: transparent;
  perspective: 1200px;
  height: 220px;
  position: relative;
  cursor: pointer;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
  transform: rotateY(180deg) scale(1.05);
}

.flip-card-front, .flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: var(--radius-xl);
  border: 3px solid var(--primary-color);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 2rem;
  transition: var(--transition);
}

.flip-card-front {
  background: var(--bg-card);
}

.flip-card-back {
  background: var(--gradient-primary);
  transform: rotateY(180deg);
  border-color: var(--accent-color);
  color: white;
}

.flip-card-front h3 {
  margin: 0 0 1rem 0;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.flip-card-back p {
  margin: 0 0 2rem 0;
  font-size: 1rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.95);
}

.category-link {
  background: var(--gradient-primary);
  color: white;
  padding: 0.8rem 1.5rem;
  border-radius: var(--radius-lg);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  display: inline-block;
  box-shadow: var(--shadow-lg);
}

.category-link:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: var(--shadow-xl);
}

/* ===========================
   Courses - Modern Course Cards
=========================== */
.home-featured-courses {
  background: var(--gradient-hero);
  padding: 5rem 0;
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  color: white;
}

.home-featured-courses h2 {
  color: white;
}

.home-featured-courses p {
  color: rgba(255, 255, 255, 0.9);
}

.home-featured-courses::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.1;
  z-index: 1;
}

.home-featured-courses .container {
  position: relative;
  z-index: 2;
}

.home-featured-courses h2 {
  text-align: center;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.home-featured-courses p {
  text-align: center;
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.courses {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.course {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  cursor: pointer;
}

.course:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-xl);
}

.course img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: var(--transition);
}

.course:hover img {
  transform: scale(1.1);
}

.course-details {
  padding: 1.5rem;
}

.course-details h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  line-height: 1.4;
}

.course:hover .course-details h3 {
  color: var(--primary-color);
}

.course-details .instructor {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.course-details .instructor-img {
  height: 2rem;
  width: 2rem;
  border-radius: 50%;
  object-fit: cover;
}

.course-details .course-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: 1rem;
}

.course-details .course-lvl-time {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.course-details .enroll-btn {
  display: block;
  width: 100%;
  text-align: center;
  background: var(--gradient-primary);
  color: white;
  padding: 0.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  transition: var(--transition);
  text-decoration: none;
}

.course-details .enroll-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* ===========================
   Vibrant Course Styles
=========================== */
.vibrant-bg {
  background: var(--gradient-primary);
  color: white;
}

.vibrant-text {
  color: white;
}

.vibrant-subtitle {
  color: rgba(255, 255, 255, 0.9);
}

.vibrant-course {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-xl);
  border-radius: var(--radius-xl);
  border: 2px solid var(--border-color);
  transition: var(--transition);
}

.vibrant-course:hover {
  transform: translateY(-12px) scale(1.03);
  box-shadow: var(--shadow-2xl);
  border-color: var(--primary-color);
}

.vibrant-course-title {
  color: var(--text-primary);
  font-size: 1.4rem;
  font-weight: 700;
}

.vibrant-instructor {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.vibrant-course-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.vibrant-course-meta {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.vibrant-enroll-btn {
  background: var(--gradient-primary);
  color: white;
  padding: 1rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 1rem;
  box-shadow: var(--shadow-lg);
}

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

/* ===========================
   Testimonials - Modern Carousel
=========================== */
.home-testimonials {
  padding: 5rem 0;
  background: var(--bg-secondary);
}

.home-testimonials h2 {
  text-align: center;
  font-size: 2.2rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.home-testimonials p {
  text-align: center;
  margin: 1rem 0;
}

.testimonial-carousel {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  gap: 1rem;
  padding: 2rem 0;
}

.testimonial {
  flex: 0 0 80%;
  margin: 1rem;
  padding: 2rem;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  scroll-snap-align: center;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.testimonial:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.testimonial img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 1rem;
}

.testimonial p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.testimonial h3 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.rating {
  margin-top: .5rem;
  color: var(--warning-color);
  font-size: 1.2rem;
}

/* ===========================
   FAQ Section - Modern Accordion
=========================== */
.home-faq {
  background: var(--bg-secondary);
  padding: 5rem 0;
}

.home-faq h2 {
  font-size: 2.2rem;
  text-align: center;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.home-faq p {
  text-align: center;
  margin: 1rem 0;
}

.home-faq-content {
  max-width: 800px;
  margin: auto;
}

.faq-container {
  margin-top: 2rem;
}

.faq {
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-card);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
  overflow: hidden;
}

.faq:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.question {
  width: 100%;
  background: none;
  border: none;
  padding: 1rem;
  text-align: right;
  font-size: 1.1rem;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--primary-color);
  transition: var(--transition);
}

.question:hover {
  color: var(--secondary-color);
}

.answer {
  display: none;
  padding: 0 1rem 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.faq.active .answer {
  display: block;
}

.icon {
  font-size: 1.5rem;
  transition: var(--transition);
  color: var(--accent-color);
}

.faq.active .icon {
  transform: rotate(45deg);
  color: var(--secondary-color);
}

/* ===========================
   Interactive Courses Popover
=========================== */
.courses-popover {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
  display: none;
  z-index: 10000;
  align-items: center;
  justify-content: center;
}

.courses-popover.show {
  display: flex;
}

.popover-content {
  background: var(--bg-card);
  color: var(--text-primary);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-2xl);
  border: 1px solid var(--border-color);
}

.popover-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.popover-header h3 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.close-popover {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 2rem;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: var(--transition);
}

.close-popover:hover {
  background: var(--bg-hover);
}

.popover-body {
  padding: 1.5rem;
}

.popover-body p {
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.popover-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.popover-category {
  background: var(--bg-secondary);
  border-radius: var(--radius);
  padding: 1rem;
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.popover-category:hover {
  background: var(--bg-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.popover-category h4 {
  margin: 0 0 0.5rem 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.popover-category p {
  margin: 0 0 1rem 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.popover-link {
  display: inline-block;
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.popover-link:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

.popover-footer {
  text-align: center;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.popover-main-link {
  background: var(--gradient-primary);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  display: inline-block;
}

.popover-main-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ===========================
   About Page
=========================== */
.about {
  background: var(--bg-secondary);
  padding: 3rem 1rem;
}

.about h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 2rem;
}

.about-content {
  text-align: center;
  max-width: 800px;
  margin: auto;
}

.about-content img {
  max-width: 40%;
  height: auto;
  margin-bottom: -2rem;
  border-radius: 50%;
  box-shadow: var(--shadow-lg);
}

.about-text {
  background: var(--bg-card);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  margin-top: 2rem;
  color: var(--text-secondary);
  line-height: 1.6;
  border: 1px solid var(--border-color);
}

.about-skillmate {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.about-skillmate img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.about-skillmate img:hover {
  transform: scale(1.05);
}

.brands {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  margin-top: 3rem;
  padding: 1rem 0;
}

.brands img {
  max-width: 120px;
  height: auto;
  filter: grayscale(100%);
  opacity: 0.8;
  transition: var(--transition);
}

.brands img:hover {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.05);
}

/* Numbers Section */
.about-numbers {
  padding: 20px 0;
  background: var(--gradient-primary);
  color: white;
  margin: 15px 0;
  text-align: center;
  border-radius: var(--radius-lg);
}

.numbers-content h2 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: white;
  font-weight: 600;
}

.numbers-container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 15px;
  max-width: 500px;
  margin: 0 auto;
  padding: 0 15px;
}

.students-count,
.instructors-count,
.courses-count {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 15px 10px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  height: 100px;
  width: 140px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  transition: var(--transition);
}

.students-count:hover,
.instructors-count:hover,
.courses-count:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.15);
}

.students-count h2,
.instructors-count h2,
.courses-count h2 {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 10px;
  font-weight: 500;
  text-transform: uppercase;
}

.students-count p,
.instructors-count p,
.courses-count p {
  font-size: 1.8rem;
  font-weight: 700;
  margin: 0;
  color: white;
}

/* Social Section */
.social-section {
  padding: 30px 0;
  background: var(--bg-secondary);
  text-align: center;
}

.social-header {
  margin-bottom: 20px;
}

.section-title {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 8px;
  font-weight: 600;
}

.section-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

.social-grid {
  display: flex;
  justify-content: center;
  gap: 20px;
  max-width: 600px;
  margin: 0 auto 25px;
  padding: 0 15px;
}

.social-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 20px 15px;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  width: 170px;
  min-height: 150px;
}

.social-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.social-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.social-content {
  text-align: center;
}

.social-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 5px;
  color: var(--text-primary);
}

.social-handle {
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: block;
}

/* ===========================
   Contact Page
=========================== */
.contact {
  background: var(--bg-secondary);
  padding: 3rem 1rem;
}

.contact h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 2rem;
}

.contact-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2rem;
  align-items: center;
}

.contact-img img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.contact-form {
  background: var(--bg-card);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}

.contact-form label {
  font-size: .9rem;
  margin: .5rem 0;
  color: var(--text-primary);
  display: block;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  outline: none;
  border: 2px solid var(--border-color);
  border-radius: var(--radius);
  background-color: var(--bg-card);
  color: var(--text-primary);
  padding: .6rem .8rem;
  transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
  border: 2px solid var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.contact-form div:not(:first-child) {
  margin: .8rem 0;
}

.contact-form textarea {
  height: 12rem;
  resize: none;
}

.contact-form button {
  width: 100%;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius);
  padding: .8rem;
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.contact-form button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ===========================
   Signup/Login Pages
=========================== */
.signup-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2rem;
  align-items: center;
}

.signin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 2rem;
  justify-items: center;
}

.signup-grid h1,
.signin-grid h1 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.signup p,
.signin p {
  display: flex;
  flex-direction: column;
  margin: 1rem 0;
}

.signup label,
.signin label {
  display: inline-block;
  font-size: .9rem;
  margin: .5rem 0;
  color: var(--text-primary);
}

.signup-form button,
.signin-btn {
  width: 100%;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius);
  padding: .8rem;
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.signup-form button:hover,
.signin-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.signin {
  background: linear-gradient(135deg, #5865f2 0%, #7289da 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.signin .container {
  max-width: 480px;
  width: 100%;
}

.signin-container {
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(20px);
  border-radius: 8px;
  padding: 2rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.signin-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.signin h1 {
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 0.5rem;
  font-size: 1.5rem;
  font-weight: 600;
}

.signin p {
  color: #b9bbbe;
  text-align: center;
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

.signin .alert-error {
  background: #fee;
  border: 1px solid #fcc;
  color: #c33;
  padding: 1rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}

.signin .form-group {
  margin-bottom: 1.5rem;
}

.signin .form-group label {
  color: #b9bbbe;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.5rem;
  display: block;
}

.signin .input-container {
  position: relative;
  display: flex;
  align-items: center;
}

.signin .input-container input {
  width: 100%;
  padding: 0.75rem 2.5rem 0.75rem 0.75rem;
  border: 2px solid #e1e5e9;
  border-radius: 8px;
  font-size: 1rem;
  transition: all 0.3s ease;
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
}

.signin .input-container input:focus {
  outline: none;
  border-color: #0077b6;
  box-shadow: 0 0 0 3px rgba(0, 119, 182, 0.1), 0 4px 12px rgba(0, 119, 182, 0.15);
  transform: translateY(-1px);
}

.signin .password-toggle {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: #b9bbbe;
  font-size: 0.8rem;
}

.signin .password-toggle:hover {
  background-color: rgba(0, 119, 182, 0.1);
}

.signin button[type="submit"] {
  width: 100%;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #0077b6, #005f8d);
  color: white;
  border: none;
  padding: 0.9rem;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.signin button[type="submit"]:before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.signin button[type="submit"]:hover:before {
  left: 100%;
}

.signin button[type="submit"]:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.signin .form-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
}

.signin .forgot-password-btn {
  color: #0077b6;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.signin .forgot-password-btn:hover {
  color: #005f8d;
}

.signin .checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: #666;
}

.signin .checkbox input {
  margin: 0;
}

.signin .checkbox span {
  margin-right: 0.5rem;
}

.signin .social-login-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--bg-card);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  box-shadow: var(--shadow);
  margin-top: 1rem;
}

.signin .social-login-btn:hover {
  background: var(--bg-hover);
  border-color: var(--primary-color);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.signin .divider {
  text-align: center;
  margin: 1.5rem 0;
  color: #666;
  font-size: 0.9rem;
}

.signin .signup-link {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.9rem;
  color: #666;
}

.signin .signup-link a {
  color: #0077b6;
  text-decoration: none;
  font-weight: 600;
}

.signin .signup-link a:hover {
  color: #005f8d;
  text-decoration: underline;
}

/* Animation for form elements */
.signin .form-group {
  animation: slideInUp 0.6s ease-out;
}

.signin .form-group:nth-child(1) { animation-delay: 0.1s; }
.signin .form-group:nth-child(2) { animation-delay: 0.2s; }

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

/* Enhanced error messages */
.signin .alert-error {
  background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
  border: 1px solid #fca5a5;
  color: #dc2626;
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  animation: shake 0.5s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

/* Responsive improvements */
@media (max-width: 480px) {
  .signin .input-container .input-icon {
    right: 8px;
  }

  .signin .password-toggle {
    left: 8px;
  }

  .signin .input-container input {
    padding: 0.75rem 2rem 0.75rem 0.75rem;
  }
}

.signin-container {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 2rem;
  border: 1px solid var(--border-color);
}

.signin-image-container img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.social-login-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--bg-card);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  box-shadow: var(--shadow);
  margin-top: 1rem;
}

.social-login-btn:hover {
  background: var(--bg-hover);
  border-color: var(--primary-color);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* ===========================
   Profile/Dashboard
=========================== */
.profile {
  background: var(--bg-secondary);
  min-height: 100vh;
}

.profile-container {
  display: flex;
  background: var(--bg-secondary);
}

.sidebar {
  background: var(--bg-card);
  color: var(--text-primary);
  min-height: 100vh;
  min-width: 250px;
  box-sizing: border-box;
  position: sticky;
  top: 0;
  left: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border-color);
}

.sidebar.show {
  display: flex;
}

.sidebar h2 {
  padding: 1rem;
  margin: 0;
  font-size: 1.5rem;
  font-weight: bold;
  border-bottom: 1px solid var(--border-color);
  color: var(--primary-color);
}

.sidebar ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.sidebar li {
  margin-bottom: .5rem;
  padding: .8rem 1rem;
  color: var(--text-primary);
  border-radius: var(--radius);
  transition: var(--transition);
}

.sidebar li a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
}

.sidebar li:hover {
  background: var(--primary-color);
  color: white;
}

.sidebar li:hover a {
  color: white;
}

.profile-main {
  flex: 1;
  padding: 2rem;
  box-sizing: border-box;
  min-height: 100vh;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.profile-main h1 {
  margin: 0;
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.sidebar-toggle {
  position: absolute;
  right: 0%;
  top: 5%;
  height: 2rem;
  width: 2rem;
  background: var(--primary-color);
  border-bottom-left-radius: var(--radius-full);
  border-top-left-radius: var(--radius-full);
  padding: .5rem .8rem;
  cursor: pointer;
  display: block;
  box-shadow: var(--shadow-lg);
  color: white;
  transition: var(--transition);
}

.sidebar-toggle:hover {
  background: var(--secondary-color);
}

.stats {
  margin: 2rem 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
}

.stat {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 1.2rem;
  box-shadow: var(--shadow);
  border-left: 6px solid var(--primary-color);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.stat:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.stat .stat-heading {
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--text-primary);
}

.stat p {
  margin: .5rem 0;
  text-align: center;
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-color);
}

.dashboard-table {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 1rem;
  box-shadow: var(--shadow);
  margin: 1rem 0;
  border: 1px solid var(--border-color);
}

.dashboard-table table {
  width: 100%;
  border-collapse: collapse;
}

.dashboard-table th,
.dashboard-table td {
  padding: 1rem;
  text-align: right;
  color: var(--text-primary);
}

.dashboard-table th {
  font-weight: bold;
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.dashboard-table tbody tr:nth-child(even) {
  background: var(--bg-secondary);
}

.profile-form,
.course-form {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}

.profile-form label,
.course-form label {
  display: block;
  margin: .5rem 0;
  font-weight: 500;
  color: var(--text-primary);
}

.profile-form input,
.course-form input {
  width: 100%;
  border: 2px solid var(--border-color);
  border-radius: var(--radius);
  padding: .6rem .8rem;
  transition: var(--transition);
  background: var(--bg-card);
  color: var(--text-primary);
}

.profile-form input:focus,
.course-form input:focus {
  border: 2px solid var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.profile-form div,
.course-form div {
  margin: 1rem 0;
}

/* ===========================
   Course Page
=========================== */
.course-header {
  background: var(--bg-secondary);
  padding: 4rem 2rem;
}

.course-header p {
  margin: 1rem 0;
  color: var(--text-secondary);
}

.course-header ul {
  list-style: none;
  padding: 0;
}

.course-header li {
  margin: .5rem;
  font-weight: 500;
  color: var(--primary-color);
}

.course-grid {
  display: grid;
  grid-template-columns: 60% 40%;
  column-gap: 1rem;
}

.course-main div {
  margin: 1rem 0;
}

.course-meta {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.course-meta p span {
  display: block;
  font-size: .9rem;
  color: var(--text-secondary);
}

.course-meta img {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow);
}

.details,
.access-course {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}

.course-details video,
.access-course video {
  width: 100%;
  border-radius: var(--radius-lg);
}

.course-price {
  margin: 1rem 0;
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--primary-color);
}

.details ul {
  margin-top: 1rem;
  padding: 0;
  list-style: none;
}

.details li {
  display: flex;
  justify-content: space-between;
  padding: .8rem 0;
  font-size: .95rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
}

.course-lock {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  padding: 6rem 1rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: var(--text-secondary);
  text-align: center;
}

/* ===========================
   Dark Mode Toggle Button
=========================== */
.theme-toggle {
  background: var(--bg-card);
  border: 2px solid var(--primary-color);
  border-radius: var(--radius-full);
  width: 40px;
  height: 40px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  box-shadow: var(--shadow);
  margin-left: 1rem;
}

.theme-toggle:hover {
  transform: scale(1.1) rotate(5deg);
  box-shadow: var(--shadow-xl);
  border-color: var(--secondary-color);
}

.theme-toggle:active {
  transform: scale(0.95) rotate(-5deg);
}

.moon-icon, .sun-icon {
  font-size: 1.8rem;
  transition: var(--transition);
  color: var(--primary-color);
  position: absolute;
}

[data-theme="dark"] .sun-icon {
  opacity: 0;
  transform: scale(0) rotate(180deg);
}

[data-theme="dark"] .moon-icon {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

:not([data-theme="dark"]) .sun-icon {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

:not([data-theme="dark"]) .moon-icon {
  opacity: 0;
  transform: scale(0) rotate(180deg);
}

/* ===========================
   Utility Classes
=========================== */
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }

/* ===========================
   Responsive Design
=========================== */
@media (max-width: 1000px) {
  .container {
    margin: 0 auto;
    width: 90%;
  }
  .hero-cta-btn {
    font-size: smaller;
  }
  .hero-text h1 {
    font-size: 3rem;
    line-height: 3rem;
  }
}

@media (max-width: 870px) {
  .course-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

@media (max-width: 780px) {
  nav ul {
    display: none;
  }
  .mob-icons {
    display: block;
  }
  .course-categories {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
  .courses {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
  .about-content img {
    max-width: 80%;
  }
  .about-skillmate {
    grid-template-columns: 1fr;
  }
  .brands {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  }
  .numbers-container {
    flex-direction: column;
    gap: 10px;
    max-width: 250px;
  }
  .students-count,
  .instructors-count,
  .courses-count {
    width: 100%;
    max-width: 220px;
  }
  .contact-container {
    grid-template-columns: 1fr;
  }
  .signin-grid,
  .signup-grid {
    grid-template-columns: 1fr;
  }
  .sidebar {
    display: none;
    position: absolute;
    box-shadow: var(--shadow-xl);
  }
  .sidebar.show {
    display: block;
  }
  .sidebar-toggle {
    display: block;
  }
  .profile-container {
    position: relative;
  }
  .profile-main {
    position: relative;
  }
  .social-grid {
    flex-direction: column;
    align-items: center;
  }
  .social-card {
    width: 250px;
    flex-direction: row;
    text-align: right;
    justify-content: flex-start;
  }
}

@media (max-width: 480px) {
  .course-meta {
    font-size: small;
  }
  .hero-text h1 {
    font-size: 2rem;
  }
  .testimonial {
    flex: 0 0 95%;
  }
  /* Additional mobile styles for iPhone 12 and smaller */
  .signin {
    padding: 1rem;
    min-height: 100vh;
  }
  .signin-container {
    padding: 1.5rem;
    max-width: 100%;
  }
  .signin-grid {
    gap: 1rem;
  }
  .signin h1 {
    font-size: 1.5rem;
  }
  .signin p {
    font-size: 0.9rem;
  }
  .form-group {
    margin-bottom: 1rem;
  }
  .form-actions {
    flex-direction: column;
    gap: 0.5rem;
  }
  .forgot-password-btn {
    font-size: 0.8rem;
  }
  .social-login-btn {
    font-size: 0.9rem;
    padding: 0.7rem 0.8rem;
  }
  .signup-link {
    font-size: 0.8rem;
  }
  .hero-section {
    padding: 4rem 1rem 2rem;
  }
  .hero-text h1 {
    font-size: 2.2rem;
  }
  .hero-text strong {
    font-size: 1rem;
  }
  .hero-text p {
    font-size: 1rem;
  }
  .hero-cta-btn {
    flex-direction: column;
    gap: 0.5rem;
  }
  .hero-content {
    gap: 2rem;
  }
  .container {
    padding: 0 1rem;
  }
  nav {
    padding: 1rem 0;
  }
  .mob-menu {
    right: 1rem;
  }
  .desktop-categories {
    right: 20rem;
  }
  .footer-container {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .stats {
    grid-template-columns: 1fr;
  }
  .stat {
    text-align: center;
  }
  .dashboard-table th,
  .dashboard-table td {
    padding: 0.5rem;
    font-size: 0.9rem;
  }
  .profile-form,
  .course-form {
    padding: 1rem;
  }
  .course-header {
    padding: 2rem 1rem;
  }
  .course-grid {
    grid-template-columns: 1fr;
  }
  .course-meta {
    flex-direction: column;
    gap: 0.5rem;
  }
  .course-price {
    font-size: 1.5rem;
  }
  .about {
    padding: 2rem 1rem;
  }
  .about-content img {
    max-width: 60%;
  }
  .about-skillmate {
    grid-template-columns: 1fr;
  }
  .numbers-container {
    max-width: 100%;
    flex-direction: column;
  }
  .students-count,
  .instructors-count,
  .courses-count {
    width: 100%;
    max-width: none;
  }
  .contact {
    padding: 2rem 1rem;
  }
  .contact-container {
    grid-template-columns: 1fr;
  }
  .social-grid {
    gap: 15px;
  }
  .social-card {
    width: 150px;
    min-height: 120px;
  }
  .social-title {
    font-size: 0.9rem;
  }
  .social-handle {
    font-size: 0.7rem;
  }
}

/* ===========================
   Additional Utility Classes for Inline Styles
=========================== */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.w-full { width: 100%; }
.h-auto { height: auto; }
.rounded { border-radius: var(--radius); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }
.no-underline { text-decoration: none; }

/* Inline flex utilities */
.inline-flex { display: inline-flex; }
.column-gap-sm { column-gap: 0.3rem; }
.column-gap-md { column-gap: 0.5rem; }
.column-gap-lg { column-gap: 1rem; }

/* Border utilities */
.border-bottom { border-bottom: 2px solid var(--border-color); }
.border-top { border-top: 2px solid var(--border-color); }

/* Padding utilities */
.p-20 { padding: 20px; }
.p-15 { padding: 15px; }
.p-10 { padding: 10px; }

/* Margin utilities */
.m-1 { margin: 1rem 0; }
.m-2 { margin: 2rem 0; }

/* Text utilities */
.text-small { font-size: small; }
.text-center { text-align: center; }

/* Width utilities */
.w-30 { width: 30px; }
.w-100 { width: 100%; }

/* Loading spinner animation */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.spin {
  animation: spin 1s linear infinite;
}

/* Credits Section */
.ashish-credits {
  position: fixed;
  bottom: 20px;
  left: 20px;
  background: var(--bg-card);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
  z-index: 999;
}

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

.ashish-credits svg {
  color: var(--error-color);
  transition: var(--transition);
}

.ashish-credits:hover svg {
  transform: scale(1.2);
}

.ashish-credits .text {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.ashish-credits .name {
  color: var(--primary-color);
  font-weight: 600;
}

/* Desktop Categories Button */
.desktop-categories-btn {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
  font-weight: 500;
  transition: var(--transition);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
}

.desktop-categories-btn:hover {
  color: var(--primary-color);
  background: var(--bg-hover);
  transform: translateY(-1px);
}

.desktop-categories-btn svg {
  transition: var(--transition);
}

.desktop-categories-btn:hover svg {
  transform: rotate(180deg);
}

/* Mobile Menu Signup Buttons */
.mob-menu-signup a li {
  text-align: center;
  margin: 0.4rem 0.5rem;
  padding: 0.2rem 0;
  background: var(--gradient-primary);
  color: white;
  border-radius: var(--radius);
  border-bottom: 2px solid var(--border-color);
  transition: var(--transition);
}

.mob-menu-signup a li:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Categories Button */
.categories-btn,
.categories-close-btn {
  height: 1.5rem;
  width: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
}

.categories-btn:hover,
.categories-close-btn:hover {
  transform: scale(1.1);
}

/* Mobile Categories */
.mob-categories {
  border-bottom: 2px solid var(--border-color);
}

/* Future Testimonials */
.vibrant-future-testimonials {
  margin-top: 2rem;
  padding: 2rem;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.vibrant-future-text {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
}

/* Profile Image Container */
.profile-image-container {
  position: absolute;
  left: 50%;
  top: -50px;
  transform: translateX(-60%);
}

.profile-image-container img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: var(--shadow-lg);
  border: 3px solid var(--bg-card);
}

/* Centered Utility */
.centered {
  position: absolute;
  top: 60%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* Google OAuth Notice */
.google-oauth-notice {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border: 2px solid var(--warning-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 1rem 0;
  text-align: center;
  box-shadow: var(--shadow);
}

.google-oauth-notice p {
  margin: 0.5rem 0;
  color: #92400e;
  font-size: 0.95rem;
  line-height: 1.5;
}

.google-oauth-notice strong {
  color: #78350f;
  font-size: 1.1rem;
}

.google-oauth-notice ol {
  text-align: right;
  margin: 1rem 0;
  padding-right: 1rem;
}

.google-oauth-notice li {
  margin: 0.5rem 0;
  color: #92400e;
  font-size: 0.9rem;
  line-height: 1.4;
}

.google-oauth-notice a {
  color: var(--error-color);
  text-decoration: underline;
  font-weight: 600;
}

.google-oauth-notice code {
  background: var(--bg-tertiary);
  padding: 0.2rem 0.4rem;
  border-radius: var(--radius-sm);
  font-family: 'Courier New', monospace;
  font-size: 0.85rem;
  color: var(--text-primary);
}

/* Socialaccount Provider */
.socialaccount_provider {
  background: var(--bg-card);
  padding: 1rem;
  border-radius: var(--radius);
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  cursor: pointer;
  transition: var(--transition);
}

.socialaccount_provider:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.socialaccount_provider img {
  width: 1.5rem;
  height: 1.5rem;
}

.socialaccount_provider span {
  font-weight: 600;
  color: var(--primary-color);
  font-size: 1rem;
}

/* Login Via Button */
.login-via-btn {
  width: 100%;
  display: block;
  text-align: center;
  background: var(--bg-card);
  color: var(--primary-color);
  border-radius: var(--radius);
  padding: 0.6rem 1rem;
  border: 2px solid var(--primary-color);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.login-via-btn:hover {
  background: var(--primary-color);
  color: white;
}

/* Password Reset/Change Pages */
.password-reset-content h1,
.password-instructions-sent h1,
.password-change h1,
.password-changed h1,
.signout-content h1 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.password-reset-content p,
.password-changed p,
.signout-content p {
  margin: 1rem 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5rem;
}

.password_reset label,
.password-change form p label {
  display: block;
  font-size: 0.9rem;
  margin: 0.5rem 0;
  color: var(--text-primary);
}

.password_reset input[type='email'],
.password-change form input[type="password"] {
  width: 100%;
  outline: none;
  border: 2px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--text-primary);
  padding: 0.6rem 0.8rem;
  transition: var(--transition);
}

.password_reset input[type='email']:focus,
.password-change form input[type="password"]:focus {
  border: 2px solid var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.password-change form p {
  margin: 1rem 0;
}

/* Login Page Specific */
.login p:nth-of-type(-n+2) {
  display: flex;
  flex-direction: column;
  margin: 1rem 0;
}

.login label {
  display: inline-block;
  font-size: 0.9rem;
  margin: 0.5rem 0;
  color: var(--text-primary);
}

.login input[type="text"],
.login input[type="email"],
.login input[type="password"] {
  width: 100%;
  outline: none;
  border: 2px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--text-primary);
  padding: 0.6rem 0.8rem;
  transition: var(--transition);
}

.login input:focus {
  border: 2px solid var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.login .primaryAction {
  width: 100%;
  margin: 1rem 0;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius);
  padding: 0.8rem;
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

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

/* Signup Link */
.signup-link {
  text-align: center;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.signup-link p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin: 0;
}

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

.signup-link a:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

/* Forgot Password Button */
.forgot-password-btn {
  align-self: flex-start;
  font-size: 0.9rem;
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

.forgot-password-btn:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

/* Form Actions */
.form-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* Signin Subtitle */
.signin-subtitle {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

/* Signin Info */
.signin-info h1 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

/* Skillmate Footer About */
.skillmate-foot-about {
  margin-top: 1rem;
}

.skillmate-foot-about strong {
  color: var(--text-secondary);
  font-weight: 400;
  line-height: 1.6;
}

/* Course Thumbnail */
.course-thumbnail {
  position: relative;
  overflow: hidden;
}

.course-link {
  text-decoration: none;
  color: inherit;
}

/* Animation for page load */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.5s ease-out;
}

/* Enhanced Page Transitions */
.page-transition {
  animation: pageFadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes pageFadeIn {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Smooth link transitions */
a {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

a:hover {
  transform: translateY(-2px);
}

/* Enhanced button hover effects */
.btn, button {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:hover, button:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
}

/* Card hover enhancements */
.card, .course, .testimonial, .flip-card {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover, .course:hover, .testimonial:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* Smooth navigation transitions */
nav a, .mob-menu a {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

nav a:hover, .mob-menu a:hover {
  transform: translateX(-3px);
}

/* Enhanced form inputs */
input, textarea, select {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

input:focus, textarea:focus, select:focus {
  transform: scale(1.01);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

/* Smooth modal/popover transitions */
.courses-popover, .desktop-categories, .mob-menu {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Enhanced theme toggle */
.theme-toggle {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle:hover {
  transform: scale(1.1) rotate(10deg);
}

/* Navbar theme toggle */
nav ul li .theme-toggle {
  margin: 0;
  position: static;
  float: none;
}

/* Smooth footer links */
footer a {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

footer a:hover {
  transform: translateY(-2px) scale(1.05);
}

/* Smooth scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--secondary-color);
}

/* Selection color */
::selection {
  background: var(--primary-color);
  color: white;
}

::-moz-selection {
  background: var(--primary-color);
  color: white;
}

/* Focus visible for accessibility */
*:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Print styles */
@media print {
  .theme-toggle,
  .sidebar-toggle,
  .mob-icons,
  .ashish-credits {
    display: none !important;
  }
}