/* ==========================================================================
   Fintech Expo 2026 - Program Studi Sistem Informasi Unika Soegijapranata
   Design System & Styling Stylesheet
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Dark Color Palette */
  --bg-dark: #070b14;
  --bg-surface: #0f172a;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(6, 182, 212, 0.4);

  /* Brand Colors */
  --unika-blue: #0284c7;
  --unika-yellow: #f59e0b;
  --primary: #06b6d4;
  --primary-glow: rgba(6, 182, 212, 0.25);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-sub: #cbd5e1;

  /* Category Specific Accents */
  --cat-gatcha: #d946ef;
  --cat-gatcha-bg: rgba(217, 70, 239, 0.12);
  --cat-charging: #f59e0b;
  --cat-charging-bg: rgba(245, 158, 11, 0.12);
  --cat-water: #06b6d4;
  --cat-water-bg: rgba(6, 182, 212, 0.12);
  --cat-room: #10b981;
  --cat-room-bg: rgba(16, 185, 129, 0.12);
  --cat-weighing: #6366f1;
  --cat-weighing-bg: rgba(99, 102, 241, 0.12);

  /* Dimensions */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
}

/* Background Canvas & Effects */
#fintech-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  opacity: 0.6;
}

.glow-ambient {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: -1;
}

.glow-1 {
  top: -100px;
  left: -100px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.2) 0%, rgba(0, 0, 0, 0) 70%);
}

.glow-2 {
  top: 40%;
  right: -100px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.18) 0%, rgba(0, 0, 0, 0) 70%);
}

.glow-3 {
  bottom: 0;
  left: 30%;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, rgba(0, 0, 0, 0) 70%);
}

/* Header Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1rem 2rem;
  background: rgba(7, 11, 20, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.navbar-container {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
}

.brand-logo {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #0284c7 0%, #06b6d4 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.2rem;
  color: #fff;
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.4);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, #ffffff, #93c5fd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  color: var(--text-sub);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--primary);
}

.badge-year {
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.4);
  color: var(--primary);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
}

/* Hero Section */
.hero {
  padding: 160px 2rem 70px;
  max-width: 1280px;
  margin: 0 auto;
  text-align: center;
  position: relative;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 1.5rem;
  box-shadow: 0 0 20px var(--primary-glow);
}

.hero-title {
  font-size: clamp(2.3rem, 4.8vw, 4.2rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 0%, #38bdf8 50%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.unika-highlight {
  background: linear-gradient(90deg, #f59e0b 0%, #fbbf24 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}

.hero-description {
  max-width: 780px;
  margin: 0 auto 2.5rem;
  font-size: 1.12rem;
  color: var(--text-muted);
  font-weight: 400;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-main);
  font-family: 'Outfit', sans-serif;
}

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

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Category Filter Section */
.controls-section {
  max-width: 1280px;
  margin: 0 auto 3rem;
  padding: 0 2rem;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.search-box {
  position: relative;
  width: 100%;
  max-width: 400px;
  margin: 0;
  flex: 1 1 280px;
}

.search-input {
  width: 100%;
  padding: 14px 20px 14px 48px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
  outline: none;
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 25px rgba(6, 182, 212, 0.25);
}

.search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.category-tabs {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  flex: 2 1 450px;
}

.tab-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-sub);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
  white-space: nowrap;
}

.tab-btn:hover {
  border-color: rgba(255, 255, 255, 0.2);
  color: #fff;
  transform: translateY(-2px);
}

.tab-btn.active {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.2) 0%, rgba(59, 130, 246, 0.2) 100%);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.3);
}

.tab-badge {
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
}

/* App Grid Section */
.apps-section {
  max-width: 1280px;
  margin: 0 auto 100px;
  padding: 0 2rem;
}

.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
}

.app-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: blur(12px);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.app-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, transparent, transparent);
  transition: var(--transition);
}

.app-card:hover {
  transform: translateY(-8px);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.app-card[data-category="gatcha"]::before { background: var(--cat-gatcha); }
.app-card[data-category="charging"]::before { background: var(--cat-charging); }
.app-card[data-category="water"]::before { background: var(--cat-water); }
.app-card[data-category="room"]::before { background: var(--cat-room); }
.app-card[data-category="weighing"]::before { background: var(--cat-weighing); }

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.25rem;
}

.card-badge-box {
  display: flex;
  align-items: center;
  gap: 12px;
}

.card-code {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  color: #fff;
  font-family: 'Outfit', sans-serif;
  letter-spacing: -0.02em;
}

.app-card[data-category="gatcha"] .card-code { background: linear-gradient(135deg, #d946ef, #a855f7); }
.app-card[data-category="charging"] .card-code { background: linear-gradient(135deg, #f59e0b, #d97706); }
.app-card[data-category="water"] .card-code { background: linear-gradient(135deg, #06b6d4, #0284c7); }
.app-card[data-category="room"] .card-code { background: linear-gradient(135deg, #10b981, #059669); }
.app-card[data-category="weighing"] .card-code { background: linear-gradient(135deg, #6366f1, #4f46e5); }

.category-tag {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.app-card[data-category="gatcha"] .category-tag { background: var(--cat-gatcha-bg); color: var(--cat-gatcha); border: 1px solid rgba(217,70,239,0.3); }
.app-card[data-category="charging"] .category-tag { background: var(--cat-charging-bg); color: var(--cat-charging); border: 1px solid rgba(245,158,11,0.3); }
.app-card[data-category="water"] .category-tag { background: var(--cat-water-bg); color: var(--cat-water); border: 1px solid rgba(6,182,212,0.3); }
.app-card[data-category="room"] .category-tag { background: var(--cat-room-bg); color: var(--cat-room); border: 1px solid rgba(16,185,129,0.3); }
.app-card[data-category="weighing"] .category-tag { background: var(--cat-weighing-bg); color: var(--cat-weighing); border: 1px solid rgba(99,102,241,0.3); }

.card-body {
  margin-bottom: 1.5rem;
}

.card-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.4rem;
  line-height: 1.25;
}

.card-type-info {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary);
  display: inline-block;
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.25);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-top: 4px;
}

.card-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.tech-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 1rem;
}

.tech-pill {
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-sub);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.card-footer {
  display: flex;
  gap: 10px;
}

.btn {
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7 0%, #06b6d4 100%);
  color: #fff;
  flex: 1;
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Department Info Section */
.dept-section {
  max-width: 1280px;
  margin: 0 auto 100px;
  padding: 0 2rem;
}

.dept-container {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.9) 0%, rgba(30, 41, 59, 0.8) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3.5rem 3rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
}

.dept-container::after {
  content: '';
  position: absolute;
  bottom: -50px;
  right: -50px;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.dept-content h2 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.dept-content p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.dept-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.dept-feat-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.dept-feat-card h4 {
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 0.3rem;
}

.dept-feat-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
}

/* Modal Popup */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(3, 7, 18, 0.85);
  backdrop-filter: blur(12px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-container {
  background: #0f172a;
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2.5rem;
  position: relative;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  transform: scale(0.95);
  transition: var(--transition);
}

.modal-overlay.active .modal-container {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.modal-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.modal-title {
  font-size: 1.8rem;
  font-weight: 800;
}

.modal-subtitle {
  font-size: 0.95rem;
  color: var(--primary);
  font-weight: 600;
}

.modal-section-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 1.5rem 0 0.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.4rem;
}

.modal-body p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.modal-features-list {
  list-style: none;
  margin-top: 0.5rem;
}

.modal-features-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-sub);
  font-size: 0.92rem;
}

.modal-features-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

/* Footer */
footer {
  border-top: 1px solid var(--border-color);
  background: rgba(7, 11, 20, 0.9);
  padding: 3rem 2rem;
  text-align: center;
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.footer-brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-main);
}

.footer-text {
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: 600px;
}

.footer-note {
  font-size: 0.8rem;
  color: #64748b;
  font-family: monospace;
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
  .dept-container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hero {
    padding-top: 120px;
  }
  .nav-links {
    display: none;
  }
  .apps-grid {
    grid-template-columns: 1fr;
  }
  .dept-features {
    grid-template-columns: 1fr;
  }
}