/* ==========================================================================
   DELETED TIME™ — THE MAKING OF LIVING GALLERY CSS
   High-contrast, Swiss typographic minimalism, dark room lighting,
   tactile cards, accessible keyboard states, and responsive layout.
   ========================================================================== */

:root {
  --bg-primary: #0a0a0c;
  --bg-surface: #121216;
  --bg-card: #18181f;
  --bg-card-hover: #20202a;
  --border-subtle: #242430;
  --border-highlight: #3b3b4f;
  --text-primary: #f0f0f5;
  --text-secondary: #9494a8;
  --text-muted: #5e5e72;
  --accent-cyan: #00e5ff;
  --accent-amber: #ffaa00;
  --accent-green: #00e676;
  --accent-red: #ff3366;
  --accent-purple: #b388ff;
  --font-mono: "SF Mono", "Menlo", "Consolas", monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-heading: "Oswald", "Arial Narrow", sans-serif;
  --font-display: "Deleted Time Graffiti", Georgia, serif;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.gallery-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 12, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 16px clamp(20px, 4vw, 60px);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand-link img {
  width: 32px;
  height: 32px;
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-subtitle {
  display: block;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.15em;
  color: var(--text-secondary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 0.15s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

/* Hero Section */
.gallery-intro {
  padding: 60px clamp(20px, 4vw, 60px) 30px;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.intro-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--accent-cyan);
  text-transform: uppercase;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.intro-kicker::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--accent-cyan);
  border-radius: 50%;
}

.gallery-title {
  font-family: var(--font-display);
  font-size: clamp(38px, 5.5vw, 68px);
  line-height: 1.08;
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.gallery-desc {
  font-size: clamp(16px, 1.8vw, 19px);
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 780px;
  margin-bottom: 36px;
}

/* Controls Bar */
.controls-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  margin-bottom: 40px;
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-btn {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

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

.filter-btn.active {
  background: var(--text-primary);
  border-color: var(--text-primary);
  color: var(--bg-primary);
  font-weight: 600;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: 6px 14px;
  min-width: 240px;
}

.search-input {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 12px;
  outline: none;
  width: 100%;
}

.search-input::placeholder {
  color: var(--text-muted);
}

/* Timeline Grid */
.timeline-container {
  max-width: 1200px;
  margin: 0 auto 80px;
  padding: 0 clamp(20px, 4vw, 60px);
  width: 100%;
}

.timeline-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

/* Milestone Card */
.milestone-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
}

.milestone-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-highlight);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.milestone-media {
  position: relative;
  aspect-ratio: 16/10;
  background: #000;
  overflow: hidden;
}

.milestone-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.milestone-card:hover .milestone-media img {
  transform: scale(1.03);
}

.status-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  border-radius: 3px;
  text-transform: uppercase;
}

.status-badge.verified {
  background: rgba(0, 230, 118, 0.2);
  color: var(--accent-green);
  border: 1px solid rgba(0, 230, 118, 0.4);
}

.status-badge.prototype {
  background: rgba(0, 229, 255, 0.2);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 229, 255, 0.4);
}

.status-badge.superseded {
  background: rgba(255, 170, 0, 0.2);
  color: var(--accent-amber);
  border: 1px solid rgba(255, 170, 0, 0.4);
}

.status-badge.failed {
  background: rgba(255, 51, 102, 0.2);
  color: var(--accent-red);
  border: 1px solid rgba(255, 51, 102, 0.4);
}

.milestone-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.milestone-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.milestone-title {
  font-family: var(--font-heading);
  font-size: 20px;
  line-height: 1.25;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.milestone-summary {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 16px;
  flex: 1;
}

.milestone-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.milestone-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 7px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  color: var(--text-muted);
}

/* Modal Inspector */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(4, 4, 6, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: clamp(16px, 3vw, 40px);
}

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

.modal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-highlight);
  border-radius: 10px;
  max-width: 980px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.75);
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-meta-top {
  display: flex;
  gap: 12px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

.modal-close-btn {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
}

.modal-close-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-highlight);
}

.modal-content {
  padding: 24px;
}

.modal-image-wrap {
  background: #000;
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 24px;
  border: 1px solid var(--border-subtle);
}

.modal-image-wrap img {
  width: 100%;
  height: auto;
  max-height: 520px;
  object-fit: contain;
  display: block;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: clamp(24px, 3.2vw, 36px);
  margin-bottom: 16px;
  color: var(--text-primary);
}

.modal-summary {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.modal-tech-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 20px;
  margin-bottom: 24px;
}

.modal-tech-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--accent-cyan);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.modal-tech-text {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: #ccc;
}

/* Footer */
.gallery-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-subtle);
  padding: 30px clamp(20px, 4vw, 60px);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-back {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-back:hover {
  color: var(--text-primary);
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  .milestone-card,
  .milestone-media img,
  .filter-btn {
    transition: none !important;
    transform: none !important;
  }
}

/* Mobile */
@media (max-width: 700px) {
  .controls-bar {
    flex-direction: column;
    align-items: stretch;
  }
  .search-box {
    min-width: 100%;
  }
  .timeline-grid {
    grid-template-columns: 1fr;
  }
  .gallery-footer {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}