/**
 * AcademiaNova — Modern University, Student & Faculty Portal
 * Design System: Rich Coffee-Brown, Crisp White, Obsidian Black
 */

:root {
  /* Coffee-Brown Spectrum */
  --coffee-950: #0e0a07;
  --coffee-900: #1a0f0a;
  --coffee-800: #2c1810;
  --coffee-700: #3d2314;
  --coffee-600: #5c3a21;
  --coffee-500: #7f5539;
  --coffee-400: #9c6644;
  
  /* Caramel & Latte Accents */
  --caramel-gold: #c49a6c;
  --gold-glow: rgba(196, 154, 108, 0.35);
  --latte-cream: #ddb892;
  --latte-soft: #ede0d4;
  --latte-bg: #f7f4ee;

  /* White & Ivory Canvas */
  --white: #ffffff;
  --ivory: #fdfbf7;
  --surface-white: #ffffff;
  
  /* Text & Gray Hierarchy */
  --text-dark: #1e1610;
  --text-muted: #64554b;
  --text-light: #9c8e84;
  --border-latte: 1px solid rgba(111, 78, 55, 0.18);
  --border-gold: 1px solid rgba(196, 154, 108, 0.5);

  /* Status Colors (Academic Tone) */
  --emerald: #15803d;
  --emerald-bg: rgba(21, 128, 61, 0.1);
  --amber: #b45309;
  --amber-bg: rgba(180, 83, 9, 0.1);
  --rose: #b91c1c;
  --rose-bg: rgba(185, 28, 28, 0.1);

  /* UI Dimensions & Radii */
  --radius-xl: 18px;
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-sm: 5px;
  --shadow-sm: 0 2px 8px rgba(44, 24, 16, 0.06);
  --shadow-md: 0 8px 24px rgba(44, 24, 16, 0.1);
  --shadow-lg: 0 16px 40px rgba(44, 24, 16, 0.16);
  --shadow-gold: 0 0 25px rgba(196, 154, 108, 0.25);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--ivory);
  color: var(--text-dark);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

h1, h2, h3, h4, .font-serif {
  font-family: "Playfair Display", "Times New Roman", Georgia, serif;
}

/* ==========================================================================
   Navigation Bar (Coffee & White Collegiate Style)
   ========================================================================== */
.uni-navbar {
  width: 100%;
  background: var(--coffee-900);
  border-bottom: 2px solid var(--caramel-gold);
  color: var(--white);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 6px 20px rgba(14, 10, 7, 0.4);
}

.nav-container {
  max-width: 1360px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--white);
}

.brand-crest {
  width: 44px;
  height: 44px;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.4));
  transition: transform 0.3s ease;
}

.nav-brand:hover .brand-crest {
  transform: rotate(5deg) scale(1.04);
}

.brand-text h1 {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: #ffffff;
  line-height: 1.1;
}

.brand-text h1 span {
  color: var(--latte-cream);
}

.brand-motto {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--caramel-gold);
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-links a {
  color: #e6ccb2;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #ffffff;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Button Variants */
.btn-coffee {
  background: linear-gradient(135deg, var(--coffee-700), var(--coffee-800));
  color: #ffffff;
  border: 1px solid var(--caramel-gold);
  padding: 8px 18px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(44, 24, 16, 0.3);
  transition: all 0.2s ease;
}

.btn-coffee:hover {
  background: linear-gradient(135deg, var(--coffee-600), var(--coffee-700));
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(44, 24, 16, 0.45);
}

.btn-gold {
  background: linear-gradient(135deg, #c49a6c, #a87948);
  color: #0e0a07;
  border: 1px solid #e6ccb2;
  padding: 8px 18px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(196, 154, 108, 0.4);
  transition: all 0.2s ease;
}

.btn-gold:hover {
  background: linear-gradient(135deg, #ddb892, #c49a6c);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(196, 154, 108, 0.6);
}

.btn-outline {
  background: transparent;
  color: var(--latte-cream);
  border: 1px solid var(--caramel-gold);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-outline:hover {
  background: rgba(196, 154, 108, 0.15);
  color: #ffffff;
}

/* Mobile Toggle Hamburger */
.mobile-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--caramel-gold);
  color: #ffffff;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* ==========================================================================
   Hero Banner & 1-Click Interactive Demo Strip
   ========================================================================== */
.hero-section {
  background: linear-gradient(135deg, var(--coffee-950) 0%, var(--coffee-800) 60%, var(--coffee-700) 100%);
  color: #ffffff;
  padding: 70px 24px 60px 24px;
  position: relative;
  overflow: hidden;
  border-bottom: 3px solid var(--caramel-gold);
}

.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 30%, rgba(196, 154, 108, 0.15), transparent 60%);
  pointer-events: none;
}

.hero-content {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(196, 154, 108, 0.2);
  border: 1px solid var(--caramel-gold);
  color: var(--latte-cream);
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.hero-title {
  font-size: 46px;
  line-height: 1.15;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 18px;
}

.hero-title span {
  color: var(--latte-cream);
  font-style: italic;
}

.hero-sub {
  font-size: 17px;
  color: #ddb892;
  margin-bottom: 28px;
  line-height: 1.6;
  max-width: 620px;
}

/* 1-Click Buyer Demo Showcase Box */
.demo-quickbar {
  background: rgba(20, 14, 10, 0.85);
  border: 1px solid var(--caramel-gold);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.5), var(--shadow-gold);
  margin-bottom: 30px;
}

.demo-quickbar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.demo-quickbar-title {
  font-size: 13px;
  font-weight: 800;
  color: var(--latte-cream);
  text-transform: uppercase;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.demo-buttons-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.demo-btn-item {
  background: rgba(61, 35, 20, 0.6);
  border: 1px solid rgba(196, 154, 108, 0.4);
  padding: 10px 14px;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: #ffffff;
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
}

.demo-btn-item:hover {
  background: var(--coffee-700);
  border-color: var(--caramel-gold);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

.demo-btn-role {
  font-size: 12px;
  font-weight: 800;
  color: var(--caramel-gold);
  display: flex;
  align-items: center;
  gap: 6px;
}

.demo-btn-name {
  font-size: 11px;
  color: #f7f4ee;
  margin-top: 2px;
}

.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 10px;
}

.stat-item {
  border-left: 3px solid var(--caramel-gold);
  padding-left: 14px;
}

.stat-val {
  font-size: 26px;
  font-weight: 900;
  color: #ffffff;
  line-height: 1;
}

.stat-lbl {
  font-size: 11px;
  color: var(--latte-cream);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 4px;
}

/* Hero Right: University Showcase Card */
.hero-card {
  background: #ffffff;
  color: var(--text-dark);
  border-radius: var(--radius-xl);
  padding: 30px;
  border: 2px solid var(--caramel-gold);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  position: relative;
}

.hero-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--latte-soft);
}

.hero-card-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--coffee-800);
}

.portal-access-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.portal-box {
  background: var(--latte-bg);
  border: 1px solid var(--latte-soft);
  border-radius: var(--radius-lg);
  padding: 16px;
  text-decoration: none;
  color: var(--text-dark);
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
}

.portal-box:hover {
  background: #ffffff;
  border-color: var(--coffee-600);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.portal-box-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--coffee-700);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
}

.portal-box-title {
  font-size: 15px;
  font-weight: 800;
  color: var(--coffee-800);
}

.portal-box-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ==========================================================================
   Main Content Sections
   ========================================================================== */
.section-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 60px 24px;
  width: 100%;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 40px auto;
}

.section-tag {
  color: var(--coffee-600);
  font-weight: 800;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
  display: block;
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  color: var(--coffee-900);
  margin-bottom: 12px;
}

.section-desc {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Academic Program Explorer Grid */
.programs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.program-card {
  background: #ffffff;
  border: 1px solid var(--latte-soft);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
}

.program-card:hover {
  border-color: var(--caramel-gold);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.program-badge {
  font-size: 11px;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--latte-soft);
  color: var(--coffee-800);
  display: inline-block;
  align-self: flex-start;
  margin-bottom: 14px;
}

.program-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--coffee-900);
  margin-bottom: 10px;
}

.program-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 18px;
}

.program-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--latte-soft);
  font-size: 12px;
  color: var(--coffee-700);
  font-weight: 700;
}

/* Tuition Calculator Card */
.tuition-box {
  background: #ffffff;
  border: 2px solid var(--latte-soft);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-md);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
}

.tuition-controls label {
  display: block;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--coffee-800);
  margin-bottom: 6px;
}

.calc-select, .calc-range {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--latte-soft);
  border-radius: var(--radius-md);
  font-size: 14px;
  background: var(--latte-bg);
  color: var(--coffee-900);
  margin-bottom: 18px;
  outline: none;
}

.tuition-display {
  background: linear-gradient(135deg, var(--coffee-900), var(--coffee-800));
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 30px;
  border: 1px solid var(--caramel-gold);
  box-shadow: var(--shadow-gold);
  text-align: center;
}

.tuition-amount {
  font-size: 42px;
  font-weight: 900;
  color: var(--latte-cream);
  line-height: 1.1;
  margin: 12px 0;
}

/* ==========================================================================
   Student, Professor & Admin Dashboard Structures
   ========================================================================== */
.portal-layout {
  display: flex;
  flex-direction: column;
  width: 100%;
  min-height: 100vh;
}

.portal-header {
  background: var(--coffee-900);
  border-bottom: 2px solid var(--caramel-gold);
  padding: 16px 32px;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.portal-user-badge {
  display: flex;
  align-items: center;
  gap: 12px;
}

.portal-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--caramel-gold);
}

.portal-container {
  max-width: 1360px;
  width: 100%;
  margin: 0 auto;
  padding: 32px 24px 60px 24px;
  flex: 1;
}

/* KPI Metric Cards (Academic Coffee/Cream) */
.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 30px;
}

.kpi-box {
  background: #ffffff;
  border: 1px solid var(--latte-soft);
  border-top: 4px solid var(--coffee-700);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease;
}

.kpi-box:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-top-color: var(--caramel-gold);
}

.kpi-box-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.kpi-box-title {
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.kpi-box-val {
  font-size: 32px;
  font-weight: 900;
  color: var(--coffee-900);
  line-height: 1.1;
  margin-bottom: 4px;
}

.kpi-box-sub {
  font-size: 12px;
  color: var(--text-muted);
}

/* University Tables */
.uni-table-card {
  background: #ffffff;
  border: 1px solid var(--latte-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 30px;
}

.uni-table-head {
  padding: 18px 24px;
  background: var(--latte-bg);
  border-bottom: 1px solid var(--latte-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.uni-table-head h2 {
  font-size: 18px;
  font-weight: 800;
  color: var(--coffee-900);
}

.uni-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.uni-table th {
  background: #fbf9f5;
  padding: 13px 18px;
  font-weight: 800;
  font-size: 11px;
  text-transform: uppercase;
  color: var(--coffee-800);
  border-bottom: 2px solid var(--latte-soft);
  letter-spacing: 0.5px;
}

.uni-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--latte-soft);
  color: var(--text-dark);
  vertical-align: middle;
}

.uni-table tr:hover {
  background: #fdfbf7;
}

/* Status Badges */
.badge-grade {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 6px;
  font-weight: 800;
  font-size: 12px;
}

.badge-grade.A { background: var(--emerald-bg); color: var(--emerald); border: 1px solid var(--emerald); }
.badge-grade.B { background: var(--amber-bg); color: var(--amber); border: 1px solid var(--amber); }
.badge-grade.C { background: var(--rose-bg); color: var(--rose); border: 1px solid var(--rose); }

.badge-tag {
  background: var(--latte-soft);
  color: var(--coffee-800);
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
}

/* Modals */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(14, 10, 7, 0.75);
  backdrop-filter: blur(6px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal-box {
  background: #ffffff;
  border: 2px solid var(--caramel-gold);
  border-radius: var(--radius-xl);
  max-width: 520px;
  width: 100%;
  padding: 36px 32px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 20px;
  background: transparent;
  border: none;
  font-size: 24px;
  color: var(--text-muted);
  cursor: pointer;
}

.modal-tabs {
  display: flex;
  border-bottom: 2px solid var(--latte-soft);
  margin-bottom: 24px;
}

.modal-tab-btn {
  flex: 1;
  padding: 12px;
  background: transparent;
  border: none;
  font-size: 14px;
  font-weight: 800;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 3px solid transparent;
}

.modal-tab-btn.active {
  color: var(--coffee-800);
  border-bottom-color: var(--caramel-gold);
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--coffee-800);
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}

.form-input {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--latte-soft);
  border-radius: var(--radius-md);
  font-size: 14px;
  background: var(--latte-bg);
  color: var(--coffee-900);
  outline: none;
  transition: border-color 0.2s;
}

.form-input:focus {
  border-color: var(--coffee-600);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(111, 78, 55, 0.15);
}

/* Footer */
.uni-footer {
  background: var(--coffee-950);
  color: #ddb892;
  padding: 50px 24px 30px 24px;
  border-top: 3px solid var(--caramel-gold);
  margin-top: auto;
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 36px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(221, 184, 146, 0.2);
}

.footer-bottom {
  max-width: 1280px;
  margin: 20px auto 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: #9c8e84;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; }
  .programs-grid { grid-template-columns: repeat(2, 1fr); }
  .kpi-row { grid-template-columns: repeat(2, 1fr); }
  .tuition-box { grid-template-columns: 1fr; }
  .footer-container { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-toggle { display: block; }
  .demo-buttons-grid { grid-template-columns: 1fr; }
  .programs-grid { grid-template-columns: 1fr; }
  .kpi-row { grid-template-columns: 1fr; }
  .hero-stats-row { grid-template-columns: 1fr 1fr; }
  .hero-title { font-size: 32px; }
  .footer-container { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
  .portal-header { flex-direction: column; align-items: flex-start; gap: 14px; }
}