/* ==========================================================================
   Suleiman HTML CSS JS Animation Gallery - Stylesheet
   Modern Glassmorphism & High-Performance Design System
   ========================================================================== */

:root {
  /* Dark Theme Palette (Default) */
  --bg-primary: #070b14;
  --bg-secondary: #0c1322;
  --bg-tertiary: #131c31;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(22, 33, 58, 0.95);
  --bg-glass: rgba(12, 19, 34, 0.75);
  --bg-input: rgba(19, 28, 49, 0.85);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(56, 189, 248, 0.35);
  --border-glow: rgba(0, 242, 254, 0.4);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-accent: #38bdf8;

  --accent-cyan: #00f2fe;
  --accent-blue: #38bdf8;
  --accent-indigo: #6366f1;
  --accent-purple: #a855f7;
  --accent-pink: #ec4899;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;

  --gradient-brand: linear-gradient(135deg, #00f2fe 0%, #6366f1 50%, #ec4899 100%);
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.25) 0%, transparent 70%);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(0, 242, 254, 0.2);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.82);
  --bg-input: #ffffff;

  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(99, 102, 241, 0.35);
  --border-glow: rgba(99, 102, 241, 0.3);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-accent: #6366f1;

  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.9) 0%, rgba(248, 250, 252, 0.9) 100%);
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.12) 0%, transparent 70%);

  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.15);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100%;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Background Atmosphere */
.bg-atmosphere {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.35;
  transition: opacity var(--transition-normal);
}

.orb-1 {
  width: 450px;
  height: 450px;
  top: -120px;
  left: 10%;
  background: var(--accent-indigo);
}

.orb-2 {
  width: 500px;
  height: 500px;
  top: 250px;
  right: -100px;
  background: var(--accent-cyan);
}

.orb-3 {
  width: 400px;
  height: 400px;
  bottom: 10%;
  left: 20%;
  background: var(--accent-pink);
}

/* Header & Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--transition-normal), border-color var(--transition-normal);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-logo {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px rgba(99, 102, 241, 0.45);
  flex-shrink: 0;
}

.brand-logo svg {
  width: 100%;
  height: 100%;
}

.brand-title {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--accent-blue);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-icon:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* Hero Section */
.hero {
  position: relative;
  z-index: 1;
  padding: 3.5rem 1.5rem 2rem;
  text-align: center;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--accent-blue);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.15);
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto 2.5rem;
}

/* Stats Row */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem 1rem;
  text-align: center;
  transition: all var(--transition-fast);
}

.stat-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-cyan);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Controls Bar: Search & Categories */
.controls-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem 1.5rem;
  position: relative;
  z-index: 2;
}

.search-wrapper {
  position: relative;
  max-width: 680px;
  margin: 0 auto 1.5rem;
}

.search-input {
  width: 100%;
  padding: 0.95rem 3.5rem 0.95rem 3rem;
  font-size: 1rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  background: var(--bg-input);
  color: var(--text-primary);
  outline: none;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.search-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2), var(--shadow-md);
}

.search-icon {
  position: absolute;
  left: 1.2rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-shortcut {
  position: absolute;
  right: 1.2rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  background: var(--border-subtle);
  color: var(--text-muted);
  border-radius: 4px;
  font-family: var(--font-mono);
  pointer-events: none;
}

.clear-search-btn {
  position: absolute;
  right: 1.2rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: none;
  padding: 4px;
}

.clear-search-btn:hover {
  color: var(--text-primary);
}

/* Filter Tags Carousel / Bar */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.filter-btn {
  padding: 0.5rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.filter-btn:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

.filter-btn.active {
  background: var(--gradient-brand);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 0 16px rgba(99, 102, 241, 0.4);
}

.filter-count {
  font-size: 0.72rem;
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.15);
}

/* View Toolbar */
.view-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.view-modes {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 0.25rem;
  border-radius: var(--radius-md);
}

.view-btn {
  padding: 0.35rem 0.65rem;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  transition: all var(--transition-fast);
}

.view-btn.active {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* Gallery Grid */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
  position: relative;
  z-index: 1;
}

.gallery-grid.list-view {
  grid-template-columns: 1fr;
  gap: 1rem;
}

/* Project Card */
.project-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.card-header-thumb {
  height: 120px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(0, 242, 254, 0.1) 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.2;
  background-image: radial-gradient(var(--accent-blue) 1px, transparent 1px);
  background-size: 16px 16px;
}

.card-index {
  position: absolute;
  top: 1rem;
  left: 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--font-mono);
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  color: var(--accent-cyan);
}

.card-category-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(99, 102, 241, 0.2);
  border: 1px solid rgba(99, 102, 241, 0.35);
  color: #f8fafc;
  backdrop-filter: blur(8px);
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
}

.card-icon {
  font-size: 2.5rem;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.4));
  transition: transform var(--transition-normal);
}

.project-card:hover .card-icon {
  transform: scale(1.15) rotate(4deg);
}

.card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.4rem;
  color: var(--text-primary);
}

.card-folder {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1.25rem;
}

.card-tag {
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--border-subtle);
  color: var(--text-secondary);
}

.card-actions {
  margin-top: auto;
  display: flex;
  gap: 0.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-subtle);
}

.btn-preview {
  flex: 1;
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius-md);
  background: var(--gradient-brand);
  color: #ffffff;
  border: none;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-preview:hover {
  opacity: 0.92;
  box-shadow: 0 0 16px rgba(99, 102, 241, 0.45);
  transform: translateY(-1px);
}

.btn-secondary {
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

/* List view adjustments */
.gallery-grid.list-view .project-card {
  flex-direction: row;
  align-items: center;
}

.gallery-grid.list-view .card-header-thumb {
  width: 140px;
  height: 100%;
  flex-shrink: 0;
}

.gallery-grid.list-view .card-body {
  padding: 1rem 1.25rem;
}

.gallery-grid.list-view .card-actions {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
  min-width: 280px;
  justify-content: flex-end;
}

/* Modal Interactive Preview */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active {
  display: flex;
  opacity: 1;
}

.modal-window {
  width: 100%;
  max-width: 1100px;
  height: 85vh;
  background: var(--bg-secondary);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
  transform: scale(0.96);
  transition: transform var(--transition-normal);
}

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

.modal-header {
  padding: 1rem 1.5rem;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.modal-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  overflow: hidden;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.modal-source-pill {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
  font-weight: 600;
}

.modal-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.modal-iframe-container {
  flex-grow: 1;
  position: relative;
  background: #000000;
}

.modal-iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

.modal-loader {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  z-index: 10;
  transition: opacity var(--transition-fast);
}

.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--border-subtle);
  border-top-color: var(--accent-cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Empty State */
.empty-state {
  text-align: center;
  padding: 4rem 1.5rem;
  grid-column: 1 / -1;
  display: none;
}

.empty-state.active {
  display: block;
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

/* Footer */
.footer {
  position: relative;
  z-index: 1;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 3rem 1.5rem;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.footer-brand h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-blue);
}

/* Responsive Breakpoints */
@media (max-width: 768px) {
  .hero {
    padding: 2rem 1rem 1.5rem;
  }
  .gallery-grid {
    grid-template-columns: 1fr;
    padding: 0 1rem 3rem;
  }
  .gallery-grid.list-view .project-card {
    flex-direction: column;
  }
  .gallery-grid.list-view .card-header-thumb {
    width: 100%;
    height: 120px;
  }
  .gallery-grid.list-view .card-actions {
    min-width: unset;
    width: 100%;
  }
  .modal-window {
    height: 94vh;
  }
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}