:root {
  --bg: #0f110e;
  --bg-card: #1a1d18;
  --bg-card-hover: #222620;
  --surface: #252a22;
  --border: #3a4035;
  --text: #e8e4dc;
  --text-muted: #9a9688;
  --accent: #b5c457;
  --accent-dim: #8a9940;
  --accent-glow: rgba(181, 196, 87, 0.15);
  --warm: #d4a853;
  --warm-dim: #a38040;
  --danger: #c45757;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

/* ── NAV ── */
.main-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(15, 17, 14, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-icon { color: var(--accent); font-size: 1.2rem; }

.nav-links { display: flex; gap: 2rem; }
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 400;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }

/* ── HERO ── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, var(--accent-glow) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(212, 168, 83, 0.08) 0%, transparent 50%);
  pointer-events: none;
}

.hero-overline {
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 900;
  line-height: 1.05;
  max-width: 900px;
  margin-bottom: 1.5rem;
}

.hero h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 540px;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  margin-top: 1rem;
}

.stat { text-align: center; }
.stat-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  display: block;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ── SECTIONS ── */
.section {
  padding: 6rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.section h2 {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.section p.lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 680px;
  line-height: 1.8;
}

/* ── HOW IT WORKS ── */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all 0.3s;
}

.step-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-dim);
  transform: translateY(-4px);
}

.step-num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 900;
  color: var(--accent);
  opacity: 0.4;
  line-height: 1;
  margin-bottom: 1rem;
}

.step-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.step-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ── ABOUT ── */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-top: 2rem;
}

.about-text p {
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 1.25rem;
  font-size: 1rem;
}

.about-visual {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.about-icon {
  font-size: 4rem;
  line-height: 1;
}

.about-visual blockquote {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-style: italic;
  color: var(--text);
  line-height: 1.5;
}

/* ── PIECE PAGE ── */
.piece-page {
  padding: 7rem 2rem 4rem;
  max-width: 900px;
  margin: 0 auto;
}

.piece-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent-glow);
  border: 1px solid var(--accent-dim);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}

.piece-badge.found {
  background: rgba(212, 168, 83, 0.15);
  border-color: var(--warm-dim);
  color: var(--warm);
}

.piece-page h1 {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 0.5rem;
}

.piece-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.piece-meta span { display: flex; align-items: center; gap: 0.4rem; }

.piece-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
}

.piece-gallery img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: transform 0.3s;
}

.piece-gallery img:hover { transform: scale(1.03); }

.piece-description {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-muted);
  margin-bottom: 3rem;
}

.piece-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 3rem;
}

.detail-item label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  display: block;
  margin-bottom: 0.25rem;
}

.detail-item span {
  font-size: 1rem;
  font-weight: 500;
}

.piece-certificate {
  text-align: center;
  padding: 2.5rem;
  background: var(--bg-card);
  border: 2px solid var(--accent-dim);
  border-radius: var(--radius);
}

.piece-certificate h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.piece-certificate p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.cert-id {
  font-family: monospace;
  font-size: 1.1rem;
  color: var(--text);
  background: var(--surface);
  display: inline-block;
  padding: 0.3rem 1rem;
  border-radius: var(--radius-sm);
  margin-top: 0.75rem;
}

/* ── FOUND INTERACTION ── */
.found-section {
  margin-top: 3rem;
  text-align: center;
}

.btn-found {
  background: var(--warm);
  color: var(--bg);
  border: none;
  padding: 1rem 2.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 100px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-found:hover { background: var(--warm-dim); transform: scale(1.05); }

.found-form { display: none; margin-top: 1.5rem; }
.found-form.active { display: block; }

.found-form textarea {
  width: 100%;
  max-width: 500px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 1rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  resize: vertical;
  min-height: 80px;
  margin-bottom: 1rem;
}

/* ── ADMIN ── */
.admin-page {
  padding: 6rem 2rem 4rem;
  max-width: 1200px;
  margin: 0 auto;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.admin-header h1 {
  font-family: var(--font-display);
  font-size: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-body);
}

.btn-primary { background: var(--accent); color: var(--bg); }
.btn-primary:hover { background: var(--accent-dim); }
.btn-secondary { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--accent-dim); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: 0.85; }
.btn-sm { padding: 0.4rem 0.8rem; font-size: 0.8rem; }

/* Pieces table */
.pieces-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.pieces-table th, .pieces-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.pieces-table th {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  font-weight: 500;
  background: var(--surface);
}

.pieces-table td { font-size: 0.9rem; }
.pieces-table tr:hover td { background: var(--bg-card-hover); }

.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 0.5rem;
}
.status-dot.active { background: var(--accent); }
.status-dot.draft { background: var(--text-muted); }
.status-dot.found { background: var(--warm); }

/* Edit form */
.edit-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group.full { grid-column: 1 / -1; }

.form-group label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  font-weight: 500;
}

.form-group input, .form-group textarea, .form-group select {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.2s;
}

.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

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

.checkbox-group {
  flex-direction: row;
  align-items: center;
  gap: 0.75rem;
}

.checkbox-group input[type="checkbox"] {
  width: 18px; height: 18px;
  accent-color: var(--accent);
}

/* QR Preview */
.qr-section {
  grid-column: 1 / -1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.qr-preview {
  background: #fff;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.qr-preview img { width: 160px; height: 160px; display: block; }

.qr-actions { display: flex; flex-direction: column; gap: 0.75rem; }
.qr-actions a, .qr-actions button { text-align: center; }

.qr-url {
  font-family: monospace;
  font-size: 0.85rem;
  color: var(--text-muted);
  word-break: break-all;
  background: var(--surface);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
}

/* Images preview */
.images-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.img-thumb {
  width: 80px; height: 80px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.img-thumb-wrap {
  position: relative;
}

.img-remove {
  position: absolute;
  top: -6px; right: -6px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--danger);
  color: #fff;
  border: none;
  font-size: 0.7rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Login */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.login-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3rem;
  width: 100%;
  max-width: 400px;
}

.login-box h1 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.login-box .subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.login-box .form-group { margin-bottom: 1rem; }

.login-box .btn { width: 100%; justify-content: center; margin-top: 0.5rem; }

.login-error {
  background: rgba(196, 87, 87, 0.15);
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

/* 404 */
.page-404 {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.page-404 h1 {
  font-family: var(--font-display);
  font-size: 8rem;
  font-weight: 900;
  color: var(--accent);
  opacity: 0.3;
  line-height: 1;
}

.page-404 p {
  color: var(--text-muted);
  margin: 1rem 0 2rem;
}

/* ── STL SIZE SELECTOR ── */
.stl-options {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.stl-options label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: none;
  letter-spacing: normal;
}

.stl-options select {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .main-nav { padding: 1rem; }
  .nav-links { display: none; }
  .hero h1 { font-size: 2.5rem; }
  .hero-stats { gap: 1.5rem; }
  .about-content { grid-template-columns: 1fr; gap: 2rem; }
  .edit-form { grid-template-columns: 1fr; }
  .qr-section { flex-direction: column; text-align: center; }
  .piece-details { grid-template-columns: 1fr; }
  .admin-header { flex-direction: column; gap: 1rem; align-items: flex-start; }
}