/* ═══════════════════════════════════════════════════════════════
   PSU-CS-Academic-Projects — Design System & Component Styles
   ═══════════════════════════════════════════════════════════════ */

/* ── 1. Design Tokens ─────────────────────────────────────────── */
:root {
  /* Colors */
  --clr-bg:          #0a0a0a;
  --clr-surface:     #111111;
  --clr-surface-2:   #1a1a1a;
  --clr-border:      #2a2a2a;
  --clr-border-2:    #333333;

  --clr-text:        #f5f5f5;
  --clr-text-muted:  #a3a3a3;
  --clr-text-faint:  #525252;

  --clr-maroon:      #800000;
  --clr-maroon-light:#a00000;
  --clr-maroon-glow: rgba(128, 0, 0, 0.35);
  --clr-maroon-dim:  rgba(128, 0, 0, 0.12);

  --clr-gold:        #FFD700;
  --clr-gold-dark:   #cc9900;
  --clr-gold-glow:   rgba(255, 215, 0, 0.25);
  --clr-gold-dim:    rgba(255, 215, 0, 0.10);

  /* Typography */
  --font-sans:       'Inter', system-ui, -apple-system, sans-serif;
  --text-xs:         0.6875rem;
  --text-sm:         0.8125rem;
  --text-base:       1rem;
  --text-lg:         1.125rem;
  --text-xl:         1.25rem;
  --text-2xl:        1.5rem;
  --text-3xl:        1.875rem;
  --text-4xl:        2.25rem;
  --text-5xl:        3rem;
  --text-6xl:        3.75rem;

  /* Spacing */
  --space-1:   0.25rem;
  --space-2:   0.5rem;
  --space-3:   0.75rem;
  --space-4:   1rem;
  --space-5:   1.25rem;
  --space-6:   1.5rem;
  --space-8:   2rem;
  --space-10:  2.5rem;
  --space-12:  3rem;
  --space-16:  4rem;
  --space-20:  5rem;
  --space-24:  6rem;

  /* Radii */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  12px;
  --radius-xl:  16px;
  --radius-full: 9999px;

  /* Transitions */
  --ease:        cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-fast:    150ms;
  --dur-base:    250ms;
  --dur-slow:    350ms;
  --dur-modal:   300ms;

  /* Shadows */
  --shadow-card:      0 2px 8px rgba(0,0,0,0.4), 0 1px 2px rgba(0,0,0,0.6);
  --shadow-card-hover:0 0 0 1px rgba(128,0,0,0.4), 0 0 24px rgba(128,0,0,0.3), 0 8px 32px rgba(0,0,0,0.6);
  --shadow-modal:     0 0 0 1px #2a2a2a, 0 24px 80px rgba(0,0,0,0.8);
  --shadow-gold:      0 0 20px rgba(255,215,0,0.4);

  /* Layout */
  --max-width:   1280px;
  --nav-height:  64px;
}

[hidden] {
  display: none !important;
}

/* ── 2. Reset & Base ──────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

:focus-visible {
  outline: 2px solid var(--clr-gold);
  outline-offset: 3px;
}

::selection {
  background: var(--clr-maroon);
  color: #fff;
}

/* ── 3. Layout ─────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

@media (max-width: 640px) {
  .container { padding-inline: var(--space-4); }
}

/* ── 4. Keyframe Animations ────────────────────────────────────── */

@keyframes meshShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes noiseMove {
  0%   { transform: translate(0, 0); }
  100% { transform: translate(-256px, -256px); }
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95) translateY(12px); }
  to   { opacity: 1; transform: scale(1)    translateY(0); }
}

@keyframes shimmer {
  0%   { background-position: -600px 0; }
  100% { background-position: 600px 0; }
}

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

@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 1; }
  60%  { transform: scaleY(1); transform-origin: top; opacity: 1; }
  100% { transform: scaleY(1); transform-origin: bottom; opacity: 0; }
}

@keyframes counterPop {
  0%   { transform: scale(0.8); opacity: 0; }
  70%  { transform: scale(1.05); }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

@keyframes shimmerSweep {
  0%   { left: -100%; }
  100% { left: 200%; }
}

@keyframes floatBadge {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-4px); }
}

/* ── 5. Hero ───────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: var(--space-24) 0 var(--space-16);
}

.hero__mesh {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 30%, rgba(128,0,0,0.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 80% 70%, rgba(180,0,0,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 50% 10%, rgba(255,215,0,0.06) 0%, transparent 50%),
    linear-gradient(180deg, #0a0a0a 0%, #0d0505 50%, #0a0a0a 100%);
  background-size: 400% 400%;
  animation: meshShift 18s ease infinite;
  z-index: 0;
}

.hero__noise {
  position: absolute;
  inset: -256px;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  background-size: 256px 256px;
  animation: noiseMove 8s linear infinite;
  pointer-events: none;
  z-index: 1;
  opacity: 0.5;
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.hero__badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  animation: fadeSlideUp var(--dur-slow) var(--ease) 0.1s both;
}

.hero__badge .badge {
  animation: floatBadge 3s ease-in-out infinite;
}

.hero__badge .badge:last-child {
  animation-delay: 1.5s;
}

.hero__title {
  font-size: clamp(2.5rem, 8vw, var(--text-6xl));
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--clr-text);
  margin-bottom: var(--space-5);
  animation: fadeSlideUp var(--dur-slow) var(--ease) 0.2s both;
}

.hero__title--accent {
  background: linear-gradient(135deg, var(--clr-maroon) 0%, var(--clr-gold) 60%, #fff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__tagline {
  font-size: clamp(var(--text-base), 2vw, var(--text-xl));
  color: var(--clr-text-muted);
  line-height: 1.7;
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: var(--space-10);
  animation: fadeSlideUp var(--dur-slow) var(--ease) 0.3s both;
}

.hero__br { display: none; }
@media (min-width: 640px) { .hero__br { display: initial; } }

.hero__stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  margin-bottom: var(--space-10);
  animation: fadeSlideUp var(--dur-slow) var(--ease) 0.4s both;
  flex-wrap: wrap;
}

.hero__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.hero__stat-number {
  font-size: clamp(var(--text-2xl), 5vw, var(--text-4xl));
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--clr-text);
  animation: counterPop 0.6s var(--ease-bounce) 0.8s both;
}

.hero__stat-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-text-faint);
}

.hero__stat-divider {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, transparent, var(--clr-border), transparent);
}

.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  animation: fadeSlideUp var(--dur-slow) var(--ease) 0.5s both;
}

.hero__scroll-hint {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.hero__scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--clr-maroon), transparent);
  animation: scrollLine 2s ease infinite;
}

/* ── 6. Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  border: none;
  transition: all var(--dur-base) var(--ease);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn:active { transform: scale(0.97); }

.btn--gold {
  background: var(--clr-gold);
  color: #1a0a00;
  box-shadow: 0 0 0 0 var(--clr-gold-glow);
}

.btn--gold::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: none;
}

.btn--gold:hover {
  background: #ffdf20;
  box-shadow: var(--shadow-gold);
  transform: translateY(-1px);
}

.btn--gold:hover::after {
  animation: shimmerSweep 0.6s ease forwards;
}

.btn--outline {
  background: transparent;
  color: var(--clr-text);
  border: 1px solid var(--clr-border-2);
}

.btn--outline:hover {
  border-color: var(--clr-text-muted);
  background: rgba(255,255,255,0.04);
  transform: translateY(-1px);
}

.btn--maroon {
  background: var(--clr-maroon);
  color: #fff;
}

.btn--maroon:hover {
  background: var(--clr-maroon-light);
  box-shadow: 0 0 20px var(--clr-maroon-glow);
  transform: translateY(-1px);
}

.btn--sm {
  padding: 0.375rem 1rem;
  font-size: var(--text-xs);
}

.btn__icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.btn__icon--right {
  transition: transform var(--dur-base) var(--ease);
}

.btn:hover .btn__icon--right {
  transform: translate(2px, -2px);
}

/* ── 7. Badges ─────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  transition: all var(--dur-fast) var(--ease);
}

.badge--maroon {
  background: var(--clr-maroon-dim);
  color: #ff6b6b;
  border: 1px solid rgba(128,0,0,0.3);
}

.badge--maroon:hover { background: rgba(128,0,0,0.2); }

.badge--gold {
  background: var(--clr-gold-dim);
  color: var(--clr-gold);
  border: 1px solid rgba(255,215,0,0.2);
}

.badge--gold:hover { background: rgba(255,215,0,0.15); }

.badge--outline {
  background: transparent;
  color: var(--clr-text-muted);
  border: 1px solid var(--clr-border-2);
}

.badge--outline:hover { border-color: var(--clr-text-faint); color: var(--clr-text); }

.badge--tag {
  background: var(--clr-surface-2);
  color: var(--clr-text-muted);
  border: 1px solid var(--clr-border);
  cursor: default;
}

.badge--tag:hover {
  background: var(--clr-border);
  color: var(--clr-text);
}

.badge--xs {
  font-size: 0.625rem;
  padding: 0.125rem 0.5rem;
}

.badge--lang {
  background: var(--clr-surface-2);
  color: var(--clr-text-muted);
  border: 1px solid var(--clr-border);
}

/* ── 8. Filter Bar ─────────────────────────────────────────────── */
.filter-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--clr-border);
  transition: border-color var(--dur-base) var(--ease), box-shadow var(--dur-base) var(--ease);
  animation: fadeIn 0.4s var(--ease) 0.6s both;
}

.filter-bar.scrolled {
  border-bottom-color: var(--clr-maroon);
  box-shadow: 0 4px 24px rgba(0,0,0,0.5), 0 1px 0 rgba(128,0,0,0.3);
}

.filter-bar__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
  flex-wrap: wrap;
}

.filter-bar__search-wrap {
  position: relative;
  flex: 1;
  min-width: 200px;
}

.filter-bar__search-icon {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--clr-text-faint);
  transition: color var(--dur-base) var(--ease), transform var(--dur-base) var(--ease-bounce);
  pointer-events: none;
}

.filter-bar__search-wrap:focus-within .filter-bar__search-icon {
  color: var(--clr-gold);
  transform: translateY(-50%) scale(1.1);
}

.filter-bar__search {
  width: 100%;
  padding: 0.5rem var(--space-8) 0.5rem 2.5rem;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-full);
  color: var(--clr-text);
  font-size: var(--text-sm);
  transition: border-color var(--dur-base) var(--ease), box-shadow var(--dur-base) var(--ease);
}

.filter-bar__search::placeholder { color: var(--clr-text-faint); }

.filter-bar__search:focus {
  outline: none;
  border-color: var(--clr-gold);
  box-shadow: 0 0 0 3px var(--clr-gold-dim), 0 0 16px var(--clr-gold-glow);
}

.filter-bar__search-clear {
  position: absolute;
  right: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--clr-text-faint);
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--dur-fast), color var(--dur-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.filter-bar__search-clear svg { width: 14px; height: 14px; }

.filter-bar__search-clear.visible { opacity: 1; }
.filter-bar__search-clear:hover { color: var(--clr-text); }

.filter-bar__selects {
  display: flex;
  gap: var(--space-3);
  flex-shrink: 0;
}

.select-wrap {
  position: relative;
}

.select-wrap__arrow {
  position: absolute;
  right: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 14px;
  color: var(--clr-text-faint);
  pointer-events: none;
}

.filter-bar__select {
  appearance: none;
  -webkit-appearance: none;
  padding: 0.5rem 2.25rem 0.5rem var(--space-4);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-full);
  color: var(--clr-text);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: border-color var(--dur-base) var(--ease);
}

.filter-bar__select:focus {
  outline: none;
  border-color: var(--clr-gold);
}

.filter-bar__select option {
  background: var(--clr-surface-2);
  color: var(--clr-text);
}

.filter-bar__results {
  font-size: var(--text-xs);
  color: var(--clr-text-faint);
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
}

@media (max-width: 640px) {
  .filter-bar__inner { gap: var(--space-2); }
  .filter-bar__selects { width: 100%; }
  .filter-bar__select { flex: 1; }
}

/* ── 9. Section Layout ─────────────────────────────────────────── */
.section {
  padding: var(--space-20) 0;
}

.section--alt {
  background: radial-gradient(ellipse 70% 50% at 50% 50%, rgba(128,0,0,0.05) 0%, transparent 70%),
              var(--clr-bg);
}

.section__header {
  margin-bottom: var(--space-12);
  max-width: 600px;
}

.section__title {
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--clr-text);
  margin-bottom: var(--space-3);
}

.section__subtitle {
  color: var(--clr-text-muted);
  font-size: var(--text-base);
}

/* ── 10. Card Grid ─────────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .card-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ── 11. Project Card ──────────────────────────────────────────── */
.card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  cursor: pointer;
  transition: transform var(--dur-slow) var(--ease),
              box-shadow var(--dur-slow) var(--ease),
              border-color var(--dur-slow) var(--ease);
  box-shadow: var(--shadow-card);
  opacity: 0;
  transform: translateY(24px);
  animation: fadeSlideUp var(--dur-slow) var(--ease) both;
  position: relative;
  overflow: hidden;
  will-change: transform;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(128,0,0,0.04) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--dur-slow) var(--ease);
}

.card:hover {
  transform: scale(1.02) translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(128,0,0,0.4);
}

.card:hover::before { opacity: 1; }

.card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
}

.card__badges {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.card__repo-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--clr-text-faint);
}

.card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--clr-text);
  line-height: 1.3;
  transition: color var(--dur-base) var(--ease);
}

.card:hover .card__title { color: #fff; }

.card__description {
  font-size: var(--text-sm);
  color: var(--clr-text-muted);
  line-height: 1.65;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__tags {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.card__members-list {
  list-style: none;
  padding: 0;
  margin: var(--space-3) 0 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.card__members-list li {
  font-size: var(--text-xs);
  color: var(--clr-text-muted);
  position: relative;
  padding-left: var(--space-3);
}

.card__members-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--clr-maroon);
}

.card__members-more {
  font-weight: 600;
  color: var(--clr-text-faint) !important;
}

.card__members-empty {
  font-size: var(--text-xs);
  color: var(--clr-text-faint);
  margin-top: var(--space-3);
  font-style: italic;
}

.card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--clr-border);
}

.card__stat {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  color: var(--clr-text-faint);
  font-weight: 500;
}

.card__stat svg {
  width: 12px;
  height: 12px;
}

.card__actions {
  display: flex;
  gap: var(--space-3);
  margin-top: auto;
}

.card__actions .btn {
  flex: 1;
  justify-content: center;
}

.card__lang-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

/* ── 12. Skeleton Loader ───────────────────────────────────────── */
.skeleton {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  animation: pulse 2s ease infinite;
}

.skeleton__line {
  height: 12px;
  border-radius: var(--radius-sm);
  background: linear-gradient(
    90deg,
    var(--clr-border) 0px,
    var(--clr-surface-2) 80px,
    var(--clr-border) 160px
  );
  background-size: 600px 100%;
  animation: shimmer 1.8s ease-in-out infinite;
}

.skeleton__line--title  { width: 70%; height: 20px; }
.skeleton__line--badge  { width: 30%; height: 20px; border-radius: var(--radius-full); }
.skeleton__line--p1     { width: 100%; }
.skeleton__line--p2     { width: 85%; }
.skeleton__line--p3     { width: 60%; }
.skeleton__line--btn    { height: 36px; flex: 1; border-radius: var(--radius-full); }

.skeleton__badges { display: flex; gap: var(--space-2); }
.skeleton__text   { display: flex; flex-direction: column; gap: var(--space-3); }
.skeleton__footer { display: flex; gap: var(--space-3); padding-top: var(--space-4); border-top: 1px solid var(--clr-border); }

/* ── 13. Empty State ──────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-20) 0;
  gap: var(--space-4);
  animation: fadeSlideUp var(--dur-slow) var(--ease) both;
}

.empty-state__icon {
  width: 80px;
  height: 80px;
  margin-bottom: var(--space-2);
}

.empty-state__title {
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.empty-state__message {
  color: var(--clr-text-muted);
  font-size: var(--text-sm);
  max-width: 360px;
}

/* ── 13b. Error Banner ────────────────────────────────────────── */
.error-banner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: rgba(128, 0, 0, 0.12);
  border: 1px solid rgba(128, 0, 0, 0.35);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-6);
  animation: fadeSlideUp var(--dur-slow) var(--ease) both;
}

.error-banner__icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: #ff6b6b;
}

.error-banner__message {
  flex: 1;
  font-size: var(--text-sm);
  color: var(--clr-text-muted);
  line-height: 1.5;
}

.error-banner__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.error-banner__retry {
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  background: var(--clr-maroon);
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease);
}

.error-banner__retry:hover { background: var(--clr-maroon-light); }

.error-banner__dismiss {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--clr-border-2);
  color: var(--clr-text-faint);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease);
}

.error-banner__dismiss svg { width: 14px; height: 14px; }
.error-banner__dismiss:hover { background: var(--clr-border); color: var(--clr-text); }

/* ── 14. Members Section ──────────────────────────────────────── */
.member-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-4);
}

.member-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  transition: all var(--dur-base) var(--ease);
  animation: fadeSlideUp var(--dur-slow) var(--ease) both;
}

.member-card:hover {
  border-color: rgba(128,0,0,0.3);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4), 0 0 12px var(--clr-maroon-glow);
}

.member-card a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.member-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 2px solid var(--clr-border-2);
  transition: border-color var(--dur-base) var(--ease);
  object-fit: cover;
}

.member-card:hover .member-avatar { border-color: var(--clr-maroon); }

.member-initials {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-maroon) 0%, #5a0000 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  font-weight: 700;
  color: #fff;
  border: 2px solid var(--clr-border-2);
  flex-shrink: 0;
}

.member-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--clr-text);
  text-align: center;
  line-height: 1.3;
}

.member-handle {
  font-size: var(--text-xs);
  color: var(--clr-text-faint);
}

/* ── 15. About Section ─────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 900px) {
  .about-grid { grid-template-columns: 1fr 1fr; gap: var(--space-16); }
}

.about-badge { margin-bottom: var(--space-4); }

.about-text {
  color: var(--clr-text-muted);
  font-size: var(--text-base);
  line-height: 1.75;
  margin-bottom: var(--space-4);
}

.about-pillars {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin-top: var(--space-6);
}

.about-pillar {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.about-pillar__icon {
  font-size: var(--text-2xl);
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}

.about-pillar strong {
  display: block;
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-1);
  color: var(--clr-text);
}

.about-pillar p {
  font-size: var(--text-sm);
  color: var(--clr-text-muted);
  line-height: 1.6;
}

/* Terminal / code card */
.about-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  font-family: 'Courier New', Courier, monospace;
  font-size: var(--text-sm);
  line-height: 2;
  box-shadow: var(--shadow-card), 0 0 40px rgba(128,0,0,0.08);
  position: relative;
  overflow: hidden;
}

.about-card::before {
  content: '● ● ●';
  position: absolute;
  top: var(--space-4);
  left: var(--space-5);
  font-size: 10px;
  letter-spacing: 6px;
  color: var(--clr-border-2);
}

.about-card__line {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-top: var(--space-1);
}

.about-card__line:first-child { margin-top: var(--space-6); }

.about-card__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.about-card__dot--gold   { background: var(--clr-gold); }
.about-card__dot--maroon { background: var(--clr-maroon-light); }
.about-card__dot--green  { background: #22c55e; }
.about-card__dot--blue   { background: #3b82f6; }

.about-card__comment { color: var(--clr-text-faint); font-style: italic; }
.about-card__string  { color: var(--clr-gold); }
.about-card code     { color: var(--clr-text-muted); }

.about-card__line--output {
  margin-top: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px solid var(--clr-border);
}

.about-card__prompt {
  color: #22c55e;
  font-weight: 700;
  flex-shrink: 0;
}

.about-card__success {
  color: #22c55e;
  font-size: var(--text-xs);
}

/* ── 16. Footer ─────────────────────────────────────────────────── */
.footer {
  border-top: 2px solid var(--clr-maroon);
  background: var(--clr-surface);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

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

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
  font-size: var(--text-2xl);
  font-weight: 900;
  letter-spacing: -0.04em;
}

.footer__logo-psu {
  color: var(--clr-text);
}

.footer__logo-cs {
  color: var(--clr-gold);
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--clr-text-faint);
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

.footer__github {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--clr-text-muted);
  transition: color var(--dur-base) var(--ease);
}

.footer__github svg { width: 16px; height: 16px; flex-shrink: 0; }

.footer__github:hover { color: var(--clr-text); }

.footer__nav {
  display: flex;
  gap: var(--space-12);
}

.footer__nav-heading {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-text-faint);
  margin-bottom: var(--space-4);
}

.footer__nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--clr-text-muted);
  transition: color var(--dur-base) var(--ease);
  position: relative;
  display: inline-block;
}

.footer__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--clr-maroon);
  transition: width var(--dur-base) var(--ease);
}

.footer__link:hover { color: var(--clr-text); }
.footer__link:hover::after { width: 100%; }

.footer__bottom {
  border-top: 1px solid var(--clr-border);
}

.footer__bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--clr-text-faint);
}

.footer__bottom-badges {
  display: flex;
  gap: var(--space-2);
}

/* ── 17. Modal ─────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-modal) var(--ease);
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border-2);
  border-radius: var(--radius-xl);
  max-width: 800px;
  width: 100%;
  max-height: 90dvh;
  overflow-y: auto;
  box-shadow: var(--shadow-modal);
  transform: scale(0.95) translateY(12px);
  transition: transform var(--dur-modal) var(--ease-bounce);
  position: relative;
  scroll-behavior: smooth;
}

.modal-backdrop.open .modal {
  transform: scale(1) translateY(0);
}

/* Scrollbar inside modal */
.modal::-webkit-scrollbar { width: 4px; }
.modal::-webkit-scrollbar-track { background: transparent; }
.modal::-webkit-scrollbar-thumb { background: var(--clr-border-2); border-radius: 2px; }

.modal__close {
  position: sticky;
  top: var(--space-4);
  float: right;
  margin: var(--space-4) var(--space-4) 0 0;
  z-index: 10;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--dur-fast) var(--ease);
}

.modal__close svg { width: 14px; height: 14px; }
.modal__close:hover { background: var(--clr-maroon); color: #fff; border-color: var(--clr-maroon); }

.modal__header {
  padding: var(--space-8) var(--space-8) var(--space-6);
  border-bottom: 1px solid var(--clr-border);
}

.modal__header-badges {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.modal__title {
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--clr-text);
  margin-bottom: var(--space-3);
}

.modal__description {
  color: var(--clr-text-muted);
  font-size: var(--text-base);
  line-height: 1.7;
}

.modal__meta {
  padding: var(--space-5) var(--space-8);
  display: flex;
  gap: var(--space-6);
  border-bottom: 1px solid var(--clr-border);
  flex-wrap: wrap;
}

.modal__meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--clr-text-muted);
}

.modal__meta-item svg { width: 14px; height: 14px; color: var(--clr-text-faint); }
.modal__meta-item strong { color: var(--clr-text); font-weight: 600; }

.modal__section {
  padding: var(--space-6) var(--space-8);
  border-bottom: 1px solid var(--clr-border);
}

.modal__section:last-child { border-bottom: none; }

.modal__section-title {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-text-faint);
  margin-bottom: var(--space-4);
}

.modal__tags {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.modal__members {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.modal__member-chip {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.375rem 0.875rem 0.375rem 0.375rem;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--clr-text-muted);
  transition: all var(--dur-fast) var(--ease);
  text-decoration: none;
}

.modal__member-chip:hover { border-color: var(--clr-maroon); color: var(--clr-text); }

.modal__member-initials {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-maroon) 0%, #5a0000 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.modal__member-img {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.modal__actions {
  padding: var(--space-6) var(--space-8);
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* ── 18. Page Loader ───────────────────────────────────────────── */
.page-loader {
  position: fixed;
  inset: 0;
  background: var(--clr-bg);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.4s ease, pointer-events 0s 0.4s;
}

.page-loader.hidden {
  opacity: 0;
  pointer-events: none;
}

.page-loader__ring {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 3px solid var(--clr-border);
  border-top-color: var(--clr-maroon);
  border-right-color: var(--clr-gold);
  animation: spinRing 0.9s linear infinite;
}

/* ── 19. Scroll Reveal ─────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

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

/* ── 19b. Toast Notifications ───────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: var(--space-4);
  right: var(--space-4);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}

.toast {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  color: var(--clr-text);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  animation: fadeSlideUp var(--dur-fast) var(--ease) forwards;
  pointer-events: auto;
}

.toast.toast--warning {
  border-color: rgba(255, 215, 0, 0.4);
}

.toast__icon {
  width: 16px; 
  height: 16px; 
  color: var(--clr-gold); 
  flex-shrink: 0;
}

.toast__close {
  background: none; 
  border: none; 
  color: var(--clr-text-faint); 
  cursor: pointer; 
  display: flex; 
  align-items: center; 
  padding: 2px;
}

.toast__close:hover { 
  color: var(--clr-text); 
}

.toast.hiding {
  animation: fadeSlideDown var(--dur-fast) var(--ease) forwards;
}

@keyframes fadeSlideDown {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(28px); }
}

/* ── 20. Utility ───────────────────────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

/* Color dots for language */
.lang--javascript { background: #f7df1e; }
.lang--typescript { background: #3178c6; }
.lang--python     { background: #3572a5; }
.lang--java       { background: #b07219; }
.lang--c          { background: #555555; }
.lang--cpp,
.lang--c\+\+      { background: #f34b7d; }
.lang--c\#        { background: #178600; }
.lang--go         { background: #00add8; }
.lang--rust       { background: #dea584; }
.lang--ruby       { background: #701516; }
.lang--html       { background: #e34c26; }
.lang--css        { background: #563d7c; }
.lang--shell      { background: #89e051; }
.lang--default    { background: var(--clr-text-faint); }

/* ── 21. Responsive / Mobile-First ────────────────────────────── */

/* ─── Small phones  ≤ 390px ──────────────────────────────────── */
@media (max-width: 390px) {
  :root { --nav-height: 56px; }

  .hero {
    padding: var(--space-16) 0 var(--space-12);
    min-height: 100dvh;
  }

  .hero__title {
    font-size: clamp(2rem, 11vw, 2.5rem);
    letter-spacing: -0.02em;
  }

  .hero__tagline { font-size: var(--text-sm); }

  .hero__stats {
    gap: var(--space-3);
  }

  .hero__stat-divider { display: none; }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
  }

  .hero__actions .btn {
    width: 100%;
    justify-content: center;
  }

  .section { padding: var(--space-12) 0; }
  .section__header { margin-bottom: var(--space-8); }
}

/* ─── Mobile  ≤ 640px ────────────────────────────────────────── */
@media (max-width: 640px) {
  /* Hero */
  .hero {
    padding-top: var(--space-20);
    padding-bottom: var(--space-12);
  }

  .hero__badge {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2);
  }

  .hero__tagline {
    font-size: var(--text-base);
    padding-inline: var(--space-2);
  }

  .hero__stats { flex-wrap: wrap; }
  .hero__stat-divider { display: none; }

  .hero__actions {
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    width: 100%;
    padding-inline: var(--space-4);
  }

  .hero__actions .btn {
    width: 100%;
    justify-content: center;
  }

  .hero__scroll-hint { display: none; }

  /* Filter bar — stack search above selects */
  .filter-bar__inner {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
    padding-top: var(--space-3);
    padding-bottom: var(--space-3);
  }

  .filter-bar__search-wrap {
    min-width: 0;
    width: 100%;
  }

  .filter-bar__selects {
    width: 100%;
    gap: var(--space-2);
  }

  .filter-bar__selects .select-wrap {
    flex: 1;
  }

  .filter-bar__select {
    width: 100%;
    font-size: var(--text-sm);
  }

  .filter-bar__results {
    text-align: center;
    font-size: var(--text-xs);
  }

  /* Sections */
  .section { padding: var(--space-16) 0; }
  .section__header { margin-bottom: var(--space-8); }
  .section__title { font-size: clamp(var(--text-xl), 6vw, var(--text-3xl)); }

  /* Cards — single column, comfy padding */
  .card-grid { grid-template-columns: 1fr; gap: var(--space-4); }

  .card {
    padding: var(--space-5);
    /* Disable scale hover on touch — it lingers */
    touch-action: manipulation;
  }

  .card:hover { transform: none; }
  .card:active { transform: scale(0.98); }

  .card__actions { flex-direction: column; gap: var(--space-2); }
  .card__actions .btn { justify-content: center; }

  /* Members grid — 2 columns on small phones */
  .member-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }

  /* About */
  .about-card { padding: var(--space-5); font-size: var(--text-xs); }
  .about-card__line:first-child { margin-top: var(--space-5); }

  /* Modal — full-screen bottom sheet on mobile */
  .modal-backdrop {
    align-items: flex-end;
    padding: 0;
  }

  .modal {
    max-width: 100%;
    width: 100%;
    max-height: 92dvh;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    transform: translateY(100%);
  }

  .modal-backdrop.open .modal {
    transform: translateY(0);
  }

  /* Drag handle pill */
  .modal::before {
    content: '';
    display: block;
    width: 40px;
    height: 4px;
    background: var(--clr-border-2);
    border-radius: 2px;
    margin: var(--space-3) auto 0;
  }

  .modal__header,
  .modal__section,
  .modal__meta,
  .modal__actions { padding-inline: var(--space-5); }

  .modal__header { padding-top: var(--space-5); }
  .modal__title { font-size: var(--text-xl); }

  .modal__actions {
    flex-direction: column;
    gap: var(--space-2);
  }

  .modal__actions .btn { width: 100%; justify-content: center; }

  /* Footer */
  .footer__nav { gap: var(--space-8); flex-wrap: wrap; }

  .footer__bottom-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  /* Empty state */
  .empty-state { padding: var(--space-16) 0; }
  .empty-state__icon { width: 60px; height: 60px; }
}

/* ─── Tablet  641px – 1023px ──────────────────────────────────── */
@media (min-width: 641px) and (max-width: 1023px) {
  .hero { padding: var(--space-20) 0 var(--space-16); }

  .filter-bar__inner { flex-wrap: wrap; }

  .card-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-5); }

  .member-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }

  .modal {
    max-width: 680px;
  }

  .about-grid { grid-template-columns: 1fr; gap: var(--space-10); }
}

/* ─── Desktop  ≥ 1024px ──────────────────────────────────────── */
@media (min-width: 1024px) {
  .card-grid { grid-template-columns: repeat(3, 1fr); }

  /* Restore hover effects on non-touch devices */
  .card:hover {
    transform: scale(1.02) translateY(-2px);
    box-shadow: var(--shadow-card-hover);
    border-color: rgba(128,0,0,0.4);
  }
}

/* ─── Touch devices: enlarge tap targets ─────────────────────── */
@media (hover: none) and (pointer: coarse) {
  .btn { min-height: 44px; }

  .filter-bar__search,
  .filter-bar__select { min-height: 44px; }

  .filter-bar__search-clear {
    width: 32px;
    height: 32px;
  }

  .modal__close {
    width: 40px;
    height: 40px;
  }

  /* Cards: no hover scale; use active press instead */
  .card:hover { transform: none; box-shadow: var(--shadow-card); border-color: var(--clr-border); }
  .card:active { transform: scale(0.985); }

  /* Member cards: no hover lift */
  .member-card:hover { transform: none; }
  .member-card:active { transform: scale(0.97); }
}

/* ─── Reduced motion ─────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.modal__screenshots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
  margin-top: 0.5rem;
}
.modal__screenshot {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  object-fit: cover;
  aspect-ratio: 16/9;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.modal__screenshot:hover {
  transform: scale(1.02);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* --- LIGHTBOX --- */
.lightbox {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.9);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.lightbox:not([hidden]) {
  opacity: 1;
  pointer-events: auto;
}

.lightbox__content {
  position: relative;
  max-width: 90%;
  max-height: 90vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.lightbox__img {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  animation: zoomIn 0.3s ease;
}

@keyframes zoomIn {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.lightbox__close, .lightbox__prev, .lightbox__next {
  position: absolute;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  padding: 1rem;
  transition: background 0.2s, transform 0.2s;
  z-index: 2001;
  border-radius: 50%;
  width: 50px; height: 50px;
  display: flex; align-items: center; justify-content: center;
}

.lightbox__close:hover, .lightbox__prev:hover, .lightbox__next:hover {
  background: rgba(0, 0, 0, 0.9);
  transform: scale(1.1);
}

.lightbox__close {
  top: 20px;
  right: 20px;
}

.lightbox__prev {
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
}
.lightbox__prev:hover {
  transform: translateY(-50%) scale(1.1);
}

.lightbox__next {
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
}
.lightbox__next:hover {
  transform: translateY(-50%) scale(1.1);
}

.lightbox__counter {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  font-size: 1rem;
  background: rgba(0, 0, 0, 0.6);
  padding: 0.5rem 1rem;
  border-radius: 20px;
}