/* =====================================================
   MBA Premium Theme - Academic & Professional Design
   منصة MBA المميزة - تصميم أكاديمي ومهني
   ===================================================== */

:root {
  /* ===== PREMIUM MBA COLOR PALETTE ===== */
  --mba-navy: #1a365d;           /* Deep Navy - Trust & Authority */
  --mba-navy-light: #2d5a87;     /* Lighter Navy */
  --mba-navy-dark: #0f2027;      /* Darker Navy */
  --mba-maroon: #8b2635;         /* Dark Maroon - Prestige */
  --mba-maroon-light: #a0525a;   /* Lighter Maroon */
  --mba-gold: #d4af37;           /* Gold - Excellence & Achievement */
  --mba-gold-light: #f4d03f;     /* Lighter Gold */
  --mba-gold-dark: #b8860b;      /* Darker Gold */
  --mba-slate: #2c3e50;          /* Slate - Professional */
  --mba-slate-light: #34495e;    /* Lighter Slate */
  --mba-charcoal: #2c3e50;       /* Charcoal - Sophistication */
  
  /* ===== NEUTRAL COLORS ===== */
  --mba-white: #ffffff;
  --mba-off-white: #f8fafc;
  --mba-light-gray: #f1f5f9;
  --mba-gray: #64748b;
  --mba-dark-gray: #334155;
  --mba-black: #0f172a;
  
  /* ===== ACCENT COLORS ===== */
  --mba-success: #059669;        /* Emerald Green */
  --mba-warning: #d97706;        /* Amber */
  --mba-danger: #dc2626;         /* Red */
  --mba-info: #0891b2;           /* Cyan */
  
  /* ===== TYPOGRAPHY ===== */
  --mba-font-primary: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  --mba-font-secondary: 'Playfair Display', 'Times New Roman', serif;
  --mba-font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* ===== SPACING ===== */
  --mba-spacing-xs: 0.25rem;
  --mba-spacing-sm: 0.5rem;
  --mba-spacing-md: 1rem;
  --mba-spacing-lg: 1.5rem;
  --mba-spacing-xl: 2rem;
  --mba-spacing-2xl: 3rem;
  --mba-spacing-3xl: 4rem;
  
  /* ===== BORDER RADIUS ===== */
  --mba-radius-sm: 0.375rem;
  --mba-radius-md: 0.5rem;
  --mba-radius-lg: 0.75rem;
  --mba-radius-xl: 1rem;
  --mba-radius-2xl: 1.5rem;
  
  /* ===== SHADOWS ===== */
  --mba-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --mba-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --mba-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --mba-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --mba-shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* ===== TRANSITIONS ===== */
  --mba-transition-fast: 150ms ease-in-out;
  --mba-transition-normal: 250ms ease-in-out;
  --mba-transition-slow: 350ms ease-in-out;
  
  /* ===== GRADIENTS ===== */
  --mba-gradient-primary: linear-gradient(135deg, var(--mba-navy) 0%, var(--mba-navy-dark) 100%);
  --mba-gradient-secondary: linear-gradient(135deg, var(--mba-maroon) 0%, var(--mba-maroon-light) 100%);
  --mba-gradient-accent: linear-gradient(135deg, var(--mba-gold) 0%, var(--mba-gold-light) 100%);
  --mba-gradient-hero: linear-gradient(135deg, var(--mba-navy) 0%, var(--mba-maroon) 50%, var(--mba-navy-dark) 100%);
}

/* ===== GLOBAL STYLES ===== */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--mba-font-primary);
  background: var(--mba-gradient-hero);
  color: var(--mba-slate);
  line-height: 1.6;
  margin: 0;
  padding: 0;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== TYPOGRAPHY ENHANCEMENTS ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--mba-font-secondary);
  font-weight: 600;
  color: var(--mba-navy);
  margin-bottom: var(--mba-spacing-md);
  line-height: 1.2;
}

h1 { font-size: 2.5rem; font-weight: 700; }
h2 { font-size: 2rem; font-weight: 600; }
h3 { font-size: 1.5rem; font-weight: 600; }
h4 { font-size: 1.25rem; font-weight: 600; }
h5 { font-size: 1.125rem; font-weight: 600; }
h6 { font-size: 1rem; font-weight: 600; }

p {
  margin-bottom: var(--mba-spacing-md);
  color: var(--mba-gray);
}

/* ===== PREMIUM NAVBAR ===== */
.mba-navbar {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: var(--mba-shadow-lg);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1030;
  padding: var(--mba-spacing-md) 0;
  transition: var(--mba-transition-normal);
}

.mba-navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--mba-shadow-xl);
}

.mba-navbar .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--mba-spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mba-brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--mba-navy);
  transition: var(--mba-transition-normal);
}

.mba-brand:hover {
  color: var(--mba-maroon);
  transform: translateY(-1px);
}

.mba-brand-icon {
  width: 48px;
  height: 48px;
  background: var(--mba-gradient-primary);
  border-radius: var(--mba-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: var(--mba-spacing-md);
  color: var(--mba-white);
  font-size: 1.5rem;
  box-shadow: var(--mba-shadow-md);
}

.mba-brand-text h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0;
  color: var(--mba-navy);
  font-family: var(--mba-font-secondary);
}

.mba-brand-text p {
  font-size: 0.875rem;
  margin: 0;
  color: var(--mba-gray);
  font-weight: 500;
}

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

.mba-button {
  padding: var(--mba-spacing-sm) var(--mba-spacing-lg);
  border-radius: var(--mba-radius-md);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.875rem;
  transition: var(--mba-transition-normal);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--mba-spacing-sm);
  position: relative;
  overflow: hidden;
}

.mba-button::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: var(--mba-transition-normal);
}

.mba-button:hover::before {
  left: 100%;
}

.mba-button-primary {
  background: var(--mba-gradient-primary);
  color: var(--mba-white);
  box-shadow: var(--mba-shadow-md);
}

.mba-button-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--mba-shadow-lg);
  color: var(--mba-white);
}

.mba-button-secondary {
  background: var(--mba-gradient-secondary);
  color: var(--mba-white);
  box-shadow: var(--mba-shadow-md);
}

.mba-button-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--mba-shadow-lg);
  color: var(--mba-white);
}

.mba-button-accent {
  background: var(--mba-gradient-accent);
  color: var(--mba-navy);
  box-shadow: var(--mba-shadow-md);
}

.mba-button-accent:hover {
  transform: translateY(-2px);
  box-shadow: var(--mba-shadow-lg);
  color: var(--mba-navy);
}

.mba-button-outline {
  background: transparent;
  color: var(--mba-navy);
  border: 2px solid var(--mba-navy);
}

.mba-button-outline:hover {
  background: var(--mba-navy);
  color: var(--mba-white);
  transform: translateY(-2px);
  box-shadow: var(--mba-shadow-md);
}

.mba-button-ghost {
  background: transparent;
  color: var(--mba-navy);
  border: 1px solid transparent;
}

.mba-button-ghost:hover {
  background: var(--mba-light-gray);
  border-color: var(--mba-gray);
}

.mba-button-sm {
  padding: var(--mba-spacing-xs) var(--mba-spacing-md);
  font-size: 0.75rem;
  min-height: 32px;
}

.mba-button-lg {
  padding: var(--mba-spacing-md) var(--mba-spacing-xl);
  font-size: 1rem;
  min-height: 52px;
}

/* ===== HERO SECTION ===== */
.mba-hero {
  padding: var(--mba-spacing-3xl) 0;
  text-align: center;
  background: var(--mba-gradient-hero);
  position: relative;
  overflow: hidden;
}

.mba-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  opacity: 0.3;
}

.mba-hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--mba-spacing-lg);
}

.mba-hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--mba-white);
  margin-bottom: var(--mba-spacing-lg);
  font-family: var(--mba-font-secondary);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.mba-hero-subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--mba-spacing-2xl);
  font-weight: 400;
  line-height: 1.6;
}

.mba-hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--mba-spacing-2xl);
  margin-bottom: var(--mba-spacing-2xl);
}

.mba-stat {
  text-align: center;
  color: var(--mba-white);
}

.mba-stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--mba-gold);
  display: block;
}

.mba-stat-label {
  font-size: 0.875rem;
  opacity: 0.8;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ===== SUBJECTS SECTION ===== */
.mba-subjects {
  padding: var(--mba-spacing-3xl) 0;
  background: var(--mba-off-white);
}

.mba-section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--mba-navy);
  margin-bottom: var(--mba-spacing-2xl);
  font-family: var(--mba-font-secondary);
  position: relative;
}

.mba-section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--mba-gradient-accent);
  border-radius: 2px;
}

.mba-subjects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--mba-spacing-xl);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--mba-spacing-lg);
}

.mba-subject-card {
  background: var(--mba-white);
  border-radius: var(--mba-radius-xl);
  padding: var(--mba-spacing-xl);
  text-align: center;
  transition: var(--mba-transition-normal);
  border: 1px solid rgba(0, 0, 0, 0.05);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
  box-shadow: var(--mba-shadow-sm);
}

.mba-subject-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--mba-gradient-primary);
  transform: scaleX(0);
  transition: var(--mba-transition-normal);
}

.mba-subject-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--mba-shadow-xl);
}

.mba-subject-card:hover::before {
  transform: scaleX(1);
}

.mba-subject-icon {
  width: 80px;
  height: 80px;
  background: var(--mba-gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--mba-spacing-lg);
  font-size: 2rem;
  color: var(--mba-white);
  box-shadow: var(--mba-shadow-md);
  transition: var(--mba-transition-normal);
}

.mba-subject-card:hover .mba-subject-icon {
  transform: scale(1.1);
  box-shadow: var(--mba-shadow-lg);
}

.mba-subject-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--mba-navy);
  margin-bottom: var(--mba-spacing-md);
  font-family: var(--mba-font-secondary);
}

.mba-subject-description {
  color: var(--mba-gray);
  line-height: 1.6;
  margin-bottom: var(--mba-spacing-lg);
}

.mba-subject-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--mba-gray);
  margin-top: var(--mba-spacing-lg);
  padding-top: var(--mba-spacing-md);
  border-top: 1px solid var(--mba-light-gray);
}

.mba-subject-stats {
  display: flex;
  gap: var(--mba-spacing-md);
}

.mba-stat-item {
  display: flex;
  align-items: center;
  gap: var(--mba-spacing-xs);
}

/* ===== DASHBOARD ENHANCEMENTS ===== */
.mba-dashboard {
  padding: var(--mba-spacing-2xl) 0;
  background: var(--mba-off-white);
  min-height: 100vh;
}

.mba-dashboard-header {
  background: var(--mba-white);
  border-radius: var(--mba-radius-xl);
  padding: var(--mba-spacing-xl);
  margin-bottom: var(--mba-spacing-xl);
  box-shadow: var(--mba-shadow-md);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.mba-welcome-message {
  font-size: 2rem;
  font-weight: 700;
  color: var(--mba-navy);
  margin-bottom: var(--mba-spacing-md);
  font-family: var(--mba-font-secondary);
}

.mba-dashboard-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--mba-spacing-lg);
  margin-bottom: var(--mba-spacing-xl);
}

.mba-stat-card {
  background: var(--mba-white);
  border-radius: var(--mba-radius-lg);
  padding: var(--mba-spacing-lg);
  text-align: center;
  box-shadow: var(--mba-shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--mba-transition-normal);
}

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

.mba-stat-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--mba-spacing-md);
  font-size: 1.25rem;
  color: var(--mba-white);
}

.mba-stat-card-icon.primary { background: var(--mba-gradient-primary); }
.mba-stat-card-icon.success { background: var(--mba-gradient-secondary); }
.mba-stat-card-icon.warning { background: var(--mba-gradient-accent); }
.mba-stat-card-icon.info { background: linear-gradient(135deg, var(--mba-info), #0ea5e9); }

.mba-stat-card-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--mba-navy);
  margin-bottom: var(--mba-spacing-xs);
}

.mba-stat-card-label {
  font-size: 0.875rem;
  color: var(--mba-gray);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 500;
}

/* ===== FOOTER ===== */
.mba-footer {
  background: var(--mba-navy);
  color: var(--mba-white);
  padding: var(--mba-spacing-3xl) 0 var(--mba-spacing-xl);
  margin-top: var(--mba-spacing-3xl);
}

.mba-footer h5 {
  color: var(--mba-gold);
  margin-bottom: var(--mba-spacing-lg);
  font-family: var(--mba-font-secondary);
}

.mba-footer a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: var(--mba-transition-normal);
}

.mba-footer a:hover {
  color: var(--mba-gold);
}

.mba-footer hr {
  border-color: rgba(255, 255, 255, 0.2);
  margin: var(--mba-spacing-xl) 0;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .mba-hero-title {
    font-size: 2.5rem;
  }
  
  .mba-hero-subtitle {
    font-size: 1.125rem;
  }
  
  .mba-hero-stats {
    flex-direction: column;
    gap: var(--mba-spacing-lg);
  }
  
  .mba-subjects-grid {
    grid-template-columns: 1fr;
    padding: 0 var(--mba-spacing-md);
  }
  
  .mba-dashboard-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .mba-nav-buttons {
    flex-direction: column;
    gap: var(--mba-spacing-sm);
  }
}

@media (max-width: 480px) {
  .mba-hero-title {
    font-size: 2rem;
  }
  
  .mba-section-title {
    font-size: 2rem;
  }
  
  .mba-dashboard-stats {
    grid-template-columns: 1fr;
  }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.mba-fade-in {
  animation: fadeInUp 0.6s ease-out;
}

.mba-slide-in {
  animation: slideInLeft 0.6s ease-out;
}

.mba-pulse {
  animation: pulse 2s infinite;
}

/* ===== LOADING STATES ===== */
.mba-loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: var(--mba-white);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===== UTILITY CLASSES ===== */
.mba-text-primary { color: var(--mba-navy); }
.mba-text-secondary { color: var(--mba-maroon); }
.mba-text-accent { color: var(--mba-gold); }
.mba-text-muted { color: var(--mba-gray); }

.mba-bg-primary { background: var(--mba-gradient-primary); }
.mba-bg-secondary { background: var(--mba-gradient-secondary); }
.mba-bg-accent { background: var(--mba-gradient-accent); }

.mba-shadow-sm { box-shadow: var(--mba-shadow-sm); }
.mba-shadow-md { box-shadow: var(--mba-shadow-md); }
.mba-shadow-lg { box-shadow: var(--mba-shadow-lg); }
.mba-shadow-xl { box-shadow: var(--mba-shadow-xl); }

.mba-rounded-sm { border-radius: var(--mba-radius-sm); }
.mba-rounded-md { border-radius: var(--mba-radius-md); }
.mba-rounded-lg { border-radius: var(--mba-radius-lg); }
.mba-rounded-xl { border-radius: var(--mba-radius-xl); }