/* ═══════════════════════════════════════════════════════════════════════════════
   PORTFOLIO IDEAS — MODERN CSS DESIGN SYSTEM
   No frameworks. Pure CSS with CSS variables for theming.
   ═══════════════════════════════════════════════════════════════════════════════ */

/* ── CSS VARIABLES & THEME SYSTEM ─────────────────────────────────────────── */
:root {
  /* Light Theme Colors */
  --bg-primary: #fafafa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f5f5f5;
  --bg-card: #ffffff;
  --bg-hero: #f8f9fa;
  --bg-modal: rgba(0, 0, 0, 0.65);
  --bg-tag: #f1f5f9;
  --bg-tag-hover: #e2e8f0;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #94a3b8;
  --text-muted: #cbd5e1;
  --text-inverse: #ffffff;

  --border-primary: #e2e8f0;
  --border-secondary: #f1f5f9;
  --border-hover: #cbd5e1;

  --accent-primary: #FF4500;
  --accent-secondary: #ff5714;
  --accent-tertiary: #ff2a00;
  --accent-glow: rgba(255, 69, 0, 0.08);
  --accent-glow-strong: rgba(255, 69, 0, 0.18);

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.05);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08);
  --shadow-xl: 0 24px 60px rgba(0,0,0,0.12);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --transition-fast: 0.15s ease;
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;

  --header-height: 72px;
  --max-width: 1440px;
}

[data-theme="dark"] {
  --bg-primary: #000000;
  --bg-secondary: #0d0d0d;
  --bg-tertiary: #1a1a1a;
  --bg-card: #1a1a1a;
  --bg-hero: #000000;
  --bg-modal: rgba(0, 0, 0, 0.95);
  --bg-tag: #1a1a1a;
  --bg-tag-hover: #262626;

  --text-primary: #ffffff;
  --text-secondary: #bbbbbb;
  --text-tertiary: #e6e6e6;
  --text-muted: #7e7e7e;
  --text-inverse: #000000;

  --border-primary: #262626;
  --border-secondary: #3c3c3c;
  --border-hover: #ffffff;

  --accent-primary: #ffffff;
  --accent-secondary: #e6e6e6;
  --accent-tertiary: #7e7e7e;
  --accent-glow: rgba(255, 255, 255, 0.08);
  --accent-glow-strong: rgba(255, 255, 255, 0.2);

  --shadow-sm: none;
  --shadow-md: none;
  --shadow-lg: none;
  --shadow-xl: none;
}

/* ── RESET & BASE ──────────────────────────────────────────────────────────── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background var(--transition-slow), color var(--transition-slow);
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -10; /* sits behind everything */
  pointer-events: none;
  background-image: none; /* Removed for pure black canvas */
  opacity: 0;
  display: none;
}

::selection {
  background: var(--accent-primary);
  color: var(--text-inverse);
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--border-hover); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-tertiary); }

a { text-decoration: none; color: inherit; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }

/* ── ANIMATIONS ────────────────────────────────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 var(--accent-glow); }
  50% { box-shadow: 0 0 20px 4px var(--accent-glow-strong); }
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(0.94) translateY(16px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
@keyframes backdropIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-fade-up {
  animation: fadeInUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  opacity: 0;
}
.animate-fade {
  animation: fadeIn 0.4s ease forwards;
  opacity: 0;
}
.delay-1 { animation-delay: 0.08s; }
.delay-2 { animation-delay: 0.16s; }
.delay-3 { animation-delay: 0.24s; }
.delay-4 { animation-delay: 0.32s; }
.delay-5 { animation-delay: 0.40s; }

/* ── LAYOUT UTILITIES ──────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}
@media (min-width: 768px) {
  .container { padding: 0 40px; }
}

/* ── HEADER ────────────────────────────────────────────────────────────────── */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: rgba(5, 5, 5, 0.6);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  z-index: 1000;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: box-shadow var(--transition-base);
}
.header.scrolled {
  box-shadow: var(--shadow-md);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}
.logo-icon {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.9rem;
  font-weight: 700;
  box-shadow: 0 4px 12px var(--accent-glow);
  flex-shrink: 0;
}
.logo span {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.theme-toggle {
  width: 42px; height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.theme-toggle:hover {
  background: var(--bg-card);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-1px);
}
.theme-toggle svg {
  width: 18px; height: 18px;
  transition: all var(--transition-slow);
  position: absolute;
}
.theme-toggle .moon-icon {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}
[data-theme="dark"] .theme-toggle .sun-icon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}
[data-theme="dark"] .theme-toggle .moon-icon {
  opacity: 1;
  transform: rotate(0) scale(1);
}
.github-link {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-base);
}
.github-link:hover {
  background: var(--bg-card);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-1px);
}
.github-link svg { width: 16px; height: 16px; }
@media (min-width: 640px) {
  .github-link { display: flex; }
}

/* ── HERO SECTION ────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  padding: calc(var(--header-height) + 60px) 0 80px;
  background: transparent;
  overflow: hidden;
}
.relative-hero {
  position: relative;
  width: 100%;
  min-height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
}
.hero-video-bg {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}
.hero-video-overlay {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: rgba(0, 0, 0, 0.6);
  background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.8));
  z-index: 10;
}
.hero-content-wrapper {
  position: relative;
  z-index: 20;
}
.hero::before {
  content: '';
  position: absolute;
  top: -40%; right: -15%;
  width: 700px; height: 700px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}
@media (min-width: 1024px) {
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; }
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}
.hero-badge-dot {
  width: 7px; height: 7px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulseGlow 2.5s infinite;
}
.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.hero-title .gradient-text {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 28px;
  line-height: 1.7;
}
.hero-stats {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-stat-number {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  font-family: var(--font-mono);
}
.hero-stat-label {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  font-weight: 500;
}
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-visual-inner {
  position: relative;
  width: 100%;
  max-width: 440px;
  aspect-ratio: 4/3;
}
.hero-card {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-slow);
}
.hero-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-xl);
  border-color: var(--border-hover);
}
.hero-card-1 { top: 0; left: 0; width: 55%; z-index: 3; }
.hero-card-2 { top: 18%; right: 0; width: 50%; z-index: 2; }
.hero-card-3 { bottom: 0; left: 12%; width: 55%; z-index: 1; }
.hero-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.hero-card-avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
}
.hero-card-info { flex: 1; min-width: 0; }
.hero-card-name {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.hero-card-role {
  font-size: 0.65rem;
  color: var(--text-tertiary);
}
.hero-card-body {
  font-size: 0.7rem;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.hero-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 8px;
}
.hero-card-tag {
  font-size: 0.6rem;
  padding: 2px 7px;
  border-radius: 4px;
  background: var(--bg-tertiary);
  color: var(--text-tertiary);
  font-weight: 500;
}

/* ── FILTERS SECTION ─────────────────────────────────────────────────────── */
.filters-section {
  padding: 28px 0;
  background: rgba(5, 5, 5, 0.65);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  position: sticky;
  top: var(--header-height);
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
.filters-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
@media (min-width: 768px) {
  .filters-grid {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}
.search-box {
  position: relative;
  flex: 1;
  max-width: 400px;
}
.search-box input {
  width: 100%;
  padding: 11px 14px 11px 42px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-primary);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  outline: none;
  transition: all var(--transition-base);
}
.search-box input::placeholder { color: var(--text-tertiary); }
.search-box input:focus {
  border-color: var(--accent-primary);
  background: var(--bg-card);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.search-box svg {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 16px;
  color: var(--text-tertiary);
  pointer-events: none;
}
.filter-groups {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.filter-select-wrapper {
  position: relative;
}
.filter-select-wrapper select {
  appearance: none;
  padding: 9px 32px 9px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-primary);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-family: var(--font-sans);
  font-weight: 500;
  cursor: pointer;
  outline: none;
  transition: all var(--transition-base);
  min-width: 130px;
}
.filter-select-wrapper select:hover,
.filter-select-wrapper select:focus {
  border-color: var(--accent-primary);
  background: var(--bg-card);
}
.filter-select-wrapper::after {
  content: '';
  position: absolute;
  right: 11px;
  top: 50%;
  transform: translateY(-50%);
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid var(--text-tertiary);
  pointer-events: none;
}
.active-filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
  min-height: 30px;
  align-items: center;
}
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
}
.filter-chip:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px var(--accent-glow);
}
.filter-chip svg { width: 11px; height: 11px; }
.clear-filters {
  padding: 5px 12px;
  background: transparent;
  color: var(--text-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
}
.clear-filters:hover {
  border-color: var(--accent-tertiary);
  color: var(--accent-tertiary);
}
.results-count {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  font-weight: 500;
  margin-top: 10px;
}
.results-count strong {
  color: var(--accent-primary);
  font-weight: 700;
}

/* ── PROJECTS GRID ─────────────────────────────────────────────────────────── */
.projects-section {
  padding: 50px 0 80px;
}
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width: 640px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .projects-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ── PROJECT CARD ────────────────────────────────────────────────────────── */
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-slow);
  cursor: pointer;
  position: relative;
  display: flex;
  flex-direction: column;
}
.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary), var(--accent-tertiary));
  opacity: 0;
  transition: opacity var(--transition-base);
}
.project-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: var(--border-hover);
}
.project-card:hover::before { opacity: 1; }
.project-card-image {
  position: relative;
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
}
.project-card-image .card-gradient {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  font-weight: 800;
  color: var(--text-muted);
  opacity: 0.5;
  font-family: var(--font-mono);
}
.project-card-body {
  padding: 18px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.project-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}
.project-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.project-card-difficulty {
  flex-shrink: 0;
  padding: 3px 9px;
  border-radius: 100px;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.difficulty-beginner {
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
}
[data-theme="dark"] .difficulty-beginner {
  background: rgba(34, 197, 94, 0.15);
  color: #4ade80;
}
.difficulty-intermediate {
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
}
[data-theme="dark"] .difficulty-intermediate {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
}
.difficulty-advanced {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}
[data-theme="dark"] .difficulty-advanced {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
}
.project-card-description {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.project-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--border-secondary);
}
.project-card-tags {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
  overflow: hidden;
}
.project-card-tag {
  font-size: 0.65rem;
  padding: 3px 8px;
  border-radius: 5px;
  background: var(--bg-tag);
  color: var(--text-tertiary);
  font-weight: 500;
  transition: all var(--transition-base);
  white-space: nowrap;
}
.project-card:hover .project-card-tag {
  background: var(--accent-glow);
  color: var(--accent-primary);
}
.project-card-category {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}


/* ── SCREENSHOT STYLES ─────────────────────────────────────────────────────── */

.project-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.project-card:hover .project-card-image img {
  transform: scale(1.05);
}
.project-card-image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.5) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-base);
  display: flex;
  align-items: flex-end;
  padding: 14px;
}
.project-card:hover .project-card-image-overlay {
  opacity: 1;
}
.project-card-overlay-text {
  color: white;
  font-size: 0.78rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Modal screenshot */
.modal-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  object-position: top center;
  display: block;
}
.modal-banner-fallback {
  width: 100%;
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-banner-fallback .modal-banner-text {
  font-size: 3rem;
  font-weight: 800;
  color: rgba(255,255,255,0.9);
  font-family: var(--font-mono);
}

@media (max-width: 640px) {
  .modal-image,
  .modal-banner-fallback {
    height: 160px;
  }
  .modal-banner-fallback .modal-banner-text {
    font-size: 2.2rem;
  }
}


/* ── EMPTY STATE ───────────────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 70px 20px;
  grid-column: 1 / -1;
}
.empty-state-icon {
  width: 72px; height: 72px;
  margin: 0 auto 20px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}
.empty-state-icon svg { width: 32px; height: 32px; }
.empty-state h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.empty-state p {
  color: var(--text-tertiary);
  font-size: 0.9rem;
}

/* ── MODAL ─────────────────────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: var(--bg-modal);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform: scale(0.95) translateY(16px);
  opacity: 0;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--shadow-xl);
}
.modal-backdrop.active .modal {
  transform: scale(1) translateY(0);
  opacity: 1;
}
.modal-header {
  position: relative;
  padding: 0;
  flex-shrink: 0;
}
.modal-banner {
  width: 100%;
  height: 160px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary), var(--accent-tertiary));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.modal-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.08'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.modal-banner-text {
  font-size: 3rem;
  font-weight: 800;
  color: rgba(255,255,255,0.9);
  font-family: var(--font-mono);
  position: relative;
  z-index: 1;
}
.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(10px);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.2);
  transition: all var(--transition-base);
  z-index: 10;
}
.modal-close:hover {
  background: rgba(0,0,0,0.6);
  transform: rotate(90deg);
}
.modal-close svg { width: 18px; height: 18px; }
.modal-body {
  padding: 24px 28px;
  overflow-y: auto;
  flex: 1;
}
@media (max-width: 640px) {
  .modal-body { padding: 20px 22px; }
}
.modal-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}
.modal-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.modal-difficulty {
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
}
.modal-category {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  font-weight: 500;
}
.modal-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.modal-tag {
  padding: 5px 12px;
  border-radius: 6px;
  background: var(--bg-tag);
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 500;
  border: 1px solid var(--border-primary);
}
.modal-section {
  margin-bottom: 20px;
}
.modal-section:last-child { margin-bottom: 0; }
.modal-section-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.modal-section-title::before {
  content: '';
  width: 3px; height: 14px;
  background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary));
  border-radius: 2px;
}
.modal-description {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
}
.modal-list {
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.modal-list-item {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.modal-list-item::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent-primary);
  margin-top: 7px;
  flex-shrink: 0;
}
.modal-actions {
  display: flex;
  gap: 10px;
  padding: 18px 28px;
  border-top: 1px solid var(--border-primary);
  background: var(--bg-secondary);
  flex-shrink: 0;
}
@media (max-width: 640px) {
  .modal-actions { padding: 14px 22px; flex-direction: column; }
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  box-shadow: 0 4px 14px var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px var(--accent-glow-strong);
}
.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-primary);
}
.btn-secondary:hover {
  background: var(--bg-card);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}
.btn svg { width: 16px; height: 16px; }

/* ── FOOTER ────────────────────────────────────────────────────────────────── */
.footer {
  padding: 40px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-primary);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-align: center;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--text-primary);
}
.footer-logo-icon {
  width: 28px; height: 28px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.8rem;
  font-weight: 700;
}
.footer-text {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  max-width: 400px;
}
.footer-links {
  display: flex;
  gap: 20px;
}
.footer-link {
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: color var(--transition-base);
}
.footer-link:hover { color: var(--accent-primary); }

/* ── SCROLL TO TOP ─────────────────────────────────────────────────────────── */
.scroll-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-base);
  z-index: 500;
}
.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.scroll-top:hover {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}
.scroll-top svg { width: 18px; height: 18px; }

/* ── LOADING / SKELETON ───────────────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

/* ── RESPONSIVE TWEAKS ──────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .search-box {
    max-width: none;
  }
  /* Keep the filters section sticky on mobile, but reduce vertical height */
  .filters-section {
    position: sticky !important;
    top: var(--header-height) !important;
    padding: 10px 0 !important; /* extremely thin padding */
    z-index: 100;
  }
  .filters-grid {
    gap: 8px !important; /* smaller gap between search and filter select group */
  }
}

@media (max-width: 640px) {
  .hero { padding-top: calc(var(--header-height) + 40px); padding-bottom: 50px; }
  .hero-stats { gap: 18px; }
  .hero-stat-number { font-size: 1.35rem !important; }
  .hero-visual-inner { max-width: 340px; }
  .hero-card { padding: 12px; }
  .hero-card-1 { width: 58%; }
  .hero-card-2 { width: 52%; }
  .hero-card-3 { width: 58%; left: 10%; }
  .modal-banner { height: 120px; }
  .modal-banner-text { font-size: 2.2rem; }
  
  /* Header & Logo Mobile Sizing */
  .logo {
    gap: 6px !important;
  }
  .logo div {
    width: 30px !important;
    height: 30px !important;
  }
  .logo svg {
    width: 30px !important;
    height: 30px !important;
  }
  .logo span {
    font-size: 0.95rem !important;
  }
  .header-actions {
    gap: 6px !important;
  }
  .contact-nav-link {
    padding: 6px 10px !important;
    font-size: 0.72rem !important;
    gap: 4px !important;
  }
  .contact-nav-link iconify-icon {
    font-size: 0.85rem !important;
  }

  /* Filter select group layout fixes - keep 3 columns side-by-side on tablet */
  .filter-groups {
    width: 100% !important;
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 6px !important;
  }
  .filter-select-wrapper {
    width: 100% !important;
  }
  .filter-select-wrapper select {
    width: 100% !important;
    min-width: 0 !important;
    padding: 10px 24px 10px 8px !important; /* more compact padding */
    text-overflow: ellipsis;
    font-size: 0.72rem !important; /* smaller text to fit labels on mobile */
    letter-spacing: 0.5px !important; /* tighter letter spacing */
  }
  
  /* Contact page form & card padding fixes for narrow devices */
  .contact-form-card {
    padding: 24px 16px !important;
  }
  .contact-info {
    padding: 20px 16px !important;
  }
  
  /* Card aspect-ratio and text overflow safety fixes */
  .parallax-card-down > div,
  .parallax-card-up > div {
    aspect-ratio: auto !important;
    padding: 24px !important;
  }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2rem; }
  .hero-visual { display: none; }
  
  /* Responsive 2-Row Filter Grid (Difficulty & Category top row, Tech bottom row) */
  .filter-groups {
    grid-template-columns: 1fr 1fr !important;
    gap: 8px !important;
  }
  .filter-select-wrapper:nth-child(3) {
    grid-column: span 2 !important;
  }
  .filter-select-wrapper select {
    font-size: 0.75rem !important;
    letter-spacing: 0.2px !important;
    padding: 8px 24px 8px 10px !important;
  }
  
  /* 3-Column Stats Grid */
  .hero-stats {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 10px !important;
    width: 100% !important;
  }
  .hero-stat-number {
    font-size: 1.3rem !important;
    font-weight: 700 !important;
  }
  .hero-stat-label {
    font-size: 0.62rem !important;
    letter-spacing: 0.5px !important;
  }
}

@media (max-width: 360px) {
  .logo span {
    font-size: 0.9rem !important;
  }
  .contact-nav-link {
    padding: 5px 8px !important;
    font-size: 0.68rem !important;
  }
}

/* ── SUPERDESIGN INTEGRATED AESTHETICS ──────────────────────────────────────── */
.font-serif {
  font-family: 'Playfair Display', serif;
}

/* Noise Texture Overlay */
.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999; /* make sure it sits above most elements but is transparent and pointer-events-none */
  pointer-events: none;
  opacity: 0.04;
  mix-blend-mode: overlay;
  background-image: url("https://grainy-gradients.vercel.app/noise.svg");
}

/* Reveal Animation Styles */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Custom Floating Animations */
@keyframes float-hand-left {
  0%, 100% { transform: translateY(0) rotate(0); }
  50% { transform: translateY(-20px) rotate(2deg); }
}

@keyframes float-hand-right {
  0%, 100% { transform: translateY(0) rotate(0); }
  50% { transform: translateY(20px) rotate(-2deg); }
}

.animate-float-left {
  animation: float-hand-left 12s ease-in-out infinite;
}

.animate-float-right {
  animation: float-hand-right 14s ease-in-out infinite;
}

/* Extra Video Background Enhancements */
.hero-video-bg {
  opacity: 0.45; /* soft blending */
  mix-blend-mode: lighten;
}

.hero-video-overlay {
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.35), rgba(0, 0, 0, 0.5));
}

[data-theme="dark"] .hero-video-overlay {
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.65), rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.55));
}
/* ── Logo X Animation ───────────────────────── */
.lx-tl-h, .lx-tl-v,
.lx-tr-h, .lx-tr-v,
.lx-br-h, .lx-br-v,
.lx-bl-h, .lx-bl-v {
  animation: lx-corner 0.4s ease both;
  transform-origin: center;
}
.lx-tl-h, .lx-tl-v { animation-delay: 0s; }
.lx-tr-h, .lx-tr-v { animation-delay: 0.1s; }
.lx-br-h, .lx-br-v { animation-delay: 0.2s; }
.lx-bl-h, .lx-bl-v { animation-delay: 0.3s; }

@keyframes lx-corner {
  from { opacity: 0; transform: scale(0.2); }
  to   { opacity: 1; transform: scale(1); }
}

.lx-x {
  animation: lx-x-in 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) 0.5s both;
  transform-origin: 19px 19px;
}
@keyframes lx-x-in {
  from { opacity: 0; transform: scale(0) rotate(-20deg); }
  to   { opacity: 1; transform: scale(1) rotate(0deg); }
}

.lx-scan {
  animation: lx-scan 2.5s ease-in-out 1s infinite;
}
@keyframes lx-scan {
  0%, 100% { transform: translateY(0px);  opacity: 0; }
  20%       { opacity: 0.5; }
  80%       { opacity: 0.5; }
  50%       { transform: translateY(22px); }
}
/* ═══════════════════════════════════════════════════════════════════════════════
   ADDITIONS — Logo star · Dark-force · Social links · Contact page
   All additions are modular and do NOT modify any existing rules above.
   ═══════════════════════════════════════════════════════════════════════════════ */

/* ── DARK THEME ENFORCEMENT ──────────────────────────────────────────────── */
/*
 * Force dark theme at the :root level, overriding the default light variables.
 * We do NOT remove the [data-theme="dark"] block above — it is still used by
 * initTheme() in script.js. Instead, we make :root match the dark palette so
 * the page is always dark regardless of data-theme attribute.
 */
:root {
  --bg-primary: #050505;
  --bg-secondary: #0d0d0d;
  --bg-tertiary: #141414;
  --bg-card: #111111;
  --bg-hero: #050505;
  --bg-modal: rgba(0, 0, 0, 0.85);
  --bg-tag: #1a1a1a;
  --bg-tag-hover: #222222;

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;
  --text-muted: #334155;
  --text-inverse: #050505;

  --border-primary: #1c1c1c;
  --border-secondary: #161616;
  --border-hover: #333333;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);
  --shadow-xl: 0 24px 60px rgba(0,0,0,0.7);

  --accent-glow: rgba(255, 69, 0, 0.15);
  --accent-glow-strong: rgba(255, 69, 0, 0.3);
}

/* Force dark scheme at OS/browser level so native form controls render dark */
:root { color-scheme: dark; }

/* ── LOGO STAR ENHANCEMENT ───────────────────────────────────────────────── */
.logo-star {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: 2px;
  filter: drop-shadow(0 0 6px var(--accent-glow-strong));
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1),
              filter 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0;
}

.logo-star-svg {
  width: 16px;
  height: 16px;
  display: block;
}

/* Hover: scale up + intensify glow */
.logo:hover .logo-star {
  transform: scale(1.35) rotate(15deg);
  filter: drop-shadow(0 0 10px var(--accent-glow-strong));
}

/* ── NAVBAR SOCIAL LINKS ─────────────────────────────────────────────────── */
.nav-social {
  display: none; /* hidden on small screens */
  align-items: center;
  gap: 4px;
}

@media (min-width: 640px) {
  .nav-social {
    display: flex;
  }
}

.nav-social-link {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  background: transparent;
  border: 1px solid transparent;
  transition: color 0.2s ease,
              background 0.2s ease,
              border-color 0.2s ease,
              transform 0.2s ease;
  flex-shrink: 0;
}

.nav-social-link svg {
  width: 16px;
  height: 16px;
  display: block;
  flex-shrink: 0;
}

.nav-social-link:hover {
  color: var(--accent-primary);
  background: var(--bg-tertiary);
  border-color: var(--border-primary);
  transform: translateY(-2px);
}

/* Per-platform accent on hover for extra personality */
.nav-social-link[aria-label="LinkedIn"]:hover  { color: #0a66c2; }
.nav-social-link[aria-label="Instagram"]:hover { color: #e1306c; }
.nav-social-link[aria-label="Telegram"]:hover  { color: #26a5e4; }

/* ── CONTACT NAV LINK ────────────────────────────────────────────────────── */
.contact-nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 10px;
  border: 1px solid var(--border-primary);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 500;
  font-family: var(--font-sans);
  letter-spacing: 0.01em;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.contact-nav-link:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: var(--bg-card);
  transform: translateY(-1px);
}

/* ── CONTACT PAGE — FORM STYLES ──────────────────────────────────────────── */
.contact-page {
  min-height: 100vh;
  background: transparent;
  color: var(--text-primary);
  padding-top: var(--header-height);
}

.contact-hero {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.contact-hero::before {
  content: '';
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255,69,0,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.contact-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255, 69, 0, 0.1);
  border: 1px solid rgba(255, 69, 0, 0.3);
  color: #FF4500;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 28px;
  font-family: var(--font-mono);
}

.contact-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #FF4500;
  animation: pulseGlow 2s ease-in-out infinite;
}

.contact-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 500;
  line-height: 1.1;
  margin-bottom: 18px;
  color: var(--text-primary);
  font-family: 'Playfair Display', Georgia, serif;
}

.contact-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 440px;
  margin: 0 auto;
  font-weight: 300;
  line-height: 1.65;
}

.contact-section {
  padding: 0 0 100px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  max-width: 860px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr 2fr;
  }
}

/* Info panel */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-info-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.contact-info-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}

.contact-info-value {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.contact-info-value a {
  color: var(--accent-primary);
  transition: opacity var(--transition-fast);
}

.contact-info-value a:hover { opacity: 0.75; }

.contact-divider {
  width: 40px;
  height: 1px;
  background: var(--border-primary);
  margin: 4px 0;
}

/* Form card */
.contact-form-card {
  background: rgba(10, 10, 10, 0.72);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius-xl);
  padding: 40px;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.55);
}

.contact-form-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary), transparent);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: var(--font-mono);
}

.form-input,
.form-textarea {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  padding: 12px 16px;
  outline: none;
  transition: border-color var(--transition-base),
              box-shadow var(--transition-base),
              background var(--transition-base);
  -webkit-appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-tertiary);
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--accent-primary);
  background: var(--bg-secondary);
  box-shadow: 0 0 0 3px rgba(255, 69, 0, 0.12);
}

.form-input.error,
.form-textarea.error {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.12);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.form-error-msg {
  font-size: 0.75rem;
  color: #ef4444;
  margin-top: 2px;
  display: none;
}

.form-error-msg.visible { display: block; }

.form-submit-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--transition-base);
  align-self: flex-start;
  position: relative;
  overflow: hidden;
}

.form-submit-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background 0.2s ease;
}

.form-submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 69, 0, 0.35);
}

.form-submit-btn:hover::after {
  background: rgba(255,255,255,0.06);
}

.form-submit-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.form-submit-btn .btn-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: none;
  flex-shrink: 0;
}

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

.form-submit-btn.loading .btn-spinner { display: block; }
.form-submit-btn.loading .btn-text    { display: none; }

/* Toast notification */
.contact-toast {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  box-shadow: var(--shadow-xl);
  font-size: 0.875rem;
  color: var(--text-primary);
  font-family: var(--font-sans);
  transform: translateY(20px);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 340px;
}

.contact-toast.show {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.contact-toast.toast-success { border-color: rgba(16, 185, 129, 0.4); }
.contact-toast.toast-error   { border-color: rgba(239, 68, 68, 0.4); }

.toast-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1rem;
}

.toast-success .toast-icon { background: rgba(16,185,129,0.15); }
.toast-error   .toast-icon { background: rgba(239,68,68,0.15);  }

.toast-body { display: flex; flex-direction: column; gap: 2px; }
.toast-title { font-weight: 600; }
.toast-msg   { color: var(--text-secondary); font-size: 0.8rem; }

/* ── Contact page — readability over atmospheric background ─────────────── */
.contact-hero {
  /* subtle text shadow so heading reads over the video */
  text-shadow: 0 2px 20px rgba(0,0,0,0.6);
}
.contact-title {
  text-shadow: none;
  color: #ffffff !important;
}
.contact-subtitle {
  text-shadow: 0 1px 12px rgba(0,0,0,0.5);
}
.contact-info {
  /* glassmorphism panel so it sits nicely over the hands */
  background: rgba(8,8,8,0.55);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.form-input,
.form-textarea {
  background: rgba(20,20,20,0.8);
  border-color: rgba(255,255,255,0.08);
}
.form-input:focus,
.form-textarea:focus {
  background: rgba(10,10,10,0.9);
}

/* ── Contact page — self-contained bg wrapper (no fixed, no bleed) ──────── */
.contact-bg-wrap {
  position: relative;
  overflow: hidden;       /* clips hands and video to this box */
  background: var(--bg-primary);
  border: 1px solid var(--border-secondary) !important;
}

/* Video: absolute inside wrapper, covers only the content area */
.contact-video-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.45;
  mix-blend-mode: lighten;
  z-index: 0;
  pointer-events: none;
}

/* Atmosphere image layer */
.contact-atmosphere {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}
.contact-atmosphere img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.35;
  mix-blend-mode: screen;
}

/* Floating hands — absolute so they're clipped by the wrapper */
.contact-hand {
  position: absolute;
  pointer-events: none;
  mix-blend-mode: hard-light;
  opacity: 0.7;
  z-index: 2;
}
.contact-hand img {
  width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
}
.contact-hand-left {
  left: -8%;
  top: 0%;
  width: 38vw;
  max-width: 640px;
}
.contact-hand-right {
  right: -6%;
  bottom: 6%;
  width: 30vw;
  max-width: 520px;
}

/* Gradient fade at the very bottom of the bg-wrap — hides the hard line */
.contact-fade-bottom {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 220px;
  background: linear-gradient(to bottom, transparent 0%, var(--bg-primary) 100%);
  z-index: 4;
  pointer-events: none;
}

/* Content sits above all bg layers */
.contact-page {
  position: relative;
  z-index: 5;
  min-height: 100vh;
  background: transparent;
  color: var(--text-primary);
  padding-top: var(--header-height);
  padding-bottom: 60px;   /* room for the fade-bottom gradient */
}

/* ── BMW M BRAND MODULAR SYSTEM ────────────────────────────────────────── */

/* 1. M Tricolor Stripe Divider */
.m-stripe-divider {
  height: 4px;
  width: 100%;
  border: none;
  margin: 0;
  padding: 0;
  background: linear-gradient(90deg, 
    #00e5ff 0%, #00e5ff 33.33%, 
    #3d5afe 33.33%, #3d5afe 66.66%, 
    #ff3d00 66.66%, #ff3d00 100%) !important;
}

/* 2. Bold Uppercase Stamped Typography Hierarchy */
h1, h2, h3, .hero-title, .contact-title, .project-card-title, .modal-title, .empty-state h3, .contact-subtitle {
  text-transform: uppercase !important;
  font-weight: 700 !important;
  letter-spacing: -0.5px !important;
  font-family: var(--font-sans) !important;
}

/* 3. Light Weight Engineered Typography */
body, p, .project-card-description, .modal-body, .form-input, .form-textarea, .contact-text, .cookie-consent-card p {
  font-family: var(--font-sans) !important;
  font-weight: 300 !important;
  color: var(--text-secondary) !important;
}

/* 4. Category tabs, Buttons, Navigation letterspaced labels */
.btn, .btn-primary, .btn-secondary, .form-submit-btn, .project-card-tag, .project-card-category, .contact-nav-link, .nav-social-link, .github-link, .clear-filters, .results-count, .hero-badge, .hero-stat-label, .filter-select-wrapper select, .form-label {
  text-transform: uppercase !important;
  letter-spacing: 1.5px !important;
  font-weight: 700 !important;
}

/* 5. Minimal Rectangular CTA Buttons */
.btn-primary, .form-submit-btn {
  background: #ffffff !important;
  color: #000000 !important;
  border: 1px solid #ffffff !important;
  border-radius: 0px !important;
  box-shadow: none !important;
  transition: all var(--transition-base) !important;
}
.btn-primary:hover, .form-submit-btn:hover {
  background: transparent !important;
  color: #ffffff !important;
  border-color: #ffffff !important;
  box-shadow: none !important;
  transform: none !important;
}

.btn-secondary {
  background: transparent !important;
  color: #ffffff !important;
  border: 1px solid #ffffff !important;
  border-radius: 0px !important;
  transition: all var(--transition-base) !important;
}
.btn-secondary:hover {
  background: #ffffff !important;
  border-color: #ffffff !important;
  color: #000000 !important;
}

/* 6. Logo Tricolor Slashes Override & Animation */
.logo svg path {
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.logo:hover svg path:nth-child(1) {
  transform: translate(1px, -0.5px);
  opacity: 0.85;
}
.logo:hover svg path:nth-child(2) {
  transform: translate(2px, -1px);
  opacity: 0.9;
}
.logo:hover svg path:nth-child(3) {
  transform: translate(3px, -1.5px);
  opacity: 1;
}
.logo span {
  font-family: var(--font-sans) !important;
  font-weight: 700 !important;
  text-transform: uppercase !important;
  letter-spacing: 1.5px !important;
  color: #ffffff !important;
  background: none !important;
  -webkit-text-fill-color: initial !important;
  transition: opacity var(--transition-fast);
}
.logo:hover span {
  opacity: 0.85;
}

/* 7. Dropdown Configurator Filter Selects */
.filter-select-wrapper select {
  border-radius: 0px !important;
  background: #1a1a1a !important;
  border: 1px solid #3c3c3c !important;
  color: #ffffff !important;
  text-transform: uppercase !important;
  letter-spacing: 1.5px !important;
  font-weight: 700 !important;
  font-size: 0.8rem !important;
  padding: 10px 32px 10px 12px !important;
  transition: border-color var(--transition-base) !important;
}
.filter-select-wrapper select:hover,
.filter-select-wrapper select:focus {
  border-color: #ffffff !important;
}

/* 8. Active Filter Chips and Clear Labels */
.filter-chip {
  background: #1a1a1a !important;
  border: 1px solid #ffffff !important;
  color: #ffffff !important;
  border-radius: 0px !important;
  text-transform: uppercase !important;
  letter-spacing: 1.5px !important;
  font-weight: 700 !important;
  box-shadow: none !important;
  transition: all var(--transition-base) !important;
}
.filter-chip:hover {
  background: #ffffff !important;
  color: #000000 !important;
  transform: none !important;
}

/* 9. Global Sharp Corner Override (Engineered rectangular silhouette) */
.project-card,
.project-card-image,
.project-card-image img,
.project-card-tag,
.difficulty-beginner,
.difficulty-intermediate,
.difficulty-advanced,
.search-box input,
.clear-filters,
.modal-content,
.modal-header,
.modal-body,
.modal-actions,
.form-input,
.form-textarea,
.contact-badge,
.contact-toast,
.cookie-consent-card,
.contact-form-card,
.contact-info,
.hero-card {
  border-radius: 0px !important;
}

/* 10. Scrollbar & Custom Progress Bar (White-Black theme) */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border: 2px solid var(--bg-primary);
  border-radius: 0px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}

/* ── PAGINATION SYSTEM ────────────────────────────────────────────────────── */
.pagination-container {
  display: flex;
  justify-content: center;
  margin-top: 50px;
  width: 100%;
}

.pagination-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.pag-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  min-width: 42px;
  padding: 0 14px;
  background: #111111 !important;
  border: 1px solid #262626 !important;
  color: #94a3b8 !important;
  font-family: var(--font-sans) !important;
  font-size: 0.85rem !important;
  font-weight: 700 !important;
  text-transform: uppercase !important;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all var(--transition-base) !important;
  border-radius: 0px !important; /* Sharp corners override */
}

.pag-btn:hover {
  background: #1c1c1c !important;
  border-color: #ffffff !important;
  color: #ffffff !important;
}

.pag-btn.active {
  background: #ffffff !important;
  border-color: #ffffff !important;
  color: #000000 !important;
}

.pag-btn.pag-nav {
  gap: 6px;
  font-weight: 700 !important;
}

.pag-btn.pag-next {
  background: #ff3d00 !important; /* Cyber Coral-Red */
  border-color: #ff3d00 !important;
  color: #ffffff !important;
}

.pag-btn.pag-next:hover {
  background: #ff5533 !important;
  border-color: #ff5533 !important;
  color: #ffffff !important;
}

.pag-ellipsis {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  width: 32px;
  color: #64748b;
  font-family: var(--font-sans);
  font-size: 0.9rem;
}

/* ── DONATE SYSTEM ──────────────────────────────────────────────────────── */
.donate-card {
  background: var(--bg-tertiary) !important;
  border: 1px solid var(--border-primary) !important;
  padding: 16px !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 8px !important;
  position: relative !important;
  transition: border-color var(--transition-base), background var(--transition-base) !important;
  border-radius: 0px !important;
}
.donate-card:hover {
  border-color: var(--border-hover) !important;
  background: rgba(30, 30, 30, 0.4) !important;
}
.donate-address {
  font-family: var(--font-mono) !important;
  font-size: 0.85rem !important;
  color: var(--text-primary) !important;
  word-break: break-all !important;
}
.btn-copy {
  padding: 6px 14px !important;
  font-size: 0.75rem !important;
  min-width: 80px !important;
  height: 32px !important;
  border-radius: 0px !important;
  text-transform: uppercase !important;
  font-weight: 700 !important;
  letter-spacing: 1px !important;
}
.btn-copy.copied {
  background: #0fa336 !important;
  border-color: #0fa336 !important;
  color: #ffffff !important;
}
.telegram-footer-btn {
  display: inline-flex !important;
  align-items: center !important;
  gap: 8px !important;
  padding: 10px 18px !important;
  text-decoration: none !important;
  border-radius: 0px !important;
  font-size: 0.7rem !important;
  letter-spacing: 1px !important;
  text-transform: uppercase !important;
  font-weight: 700 !important;
  border: 1px solid rgba(255, 255, 255, 0.2) !important;
  color: #a0aec0 !important;
  background: transparent !important;
  transition: all var(--transition-base) !important;
}

.telegram-footer-btn:hover {
  background: var(--bg-card) !important;
  border: 1px solid var(--accent-primary) !important;
  color: var(--accent-primary) !important;
  transform: translateY(-1px) !important;
}