/* LostCanvas Design System */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --gold: #c9a84c;
  --gold-light: #e8d5a0;
  --gold-dim: rgba(201,168,76,0.15);
  --dark: #0a0a0a;
  --dark-warm: #141210;
  --dark-card: #111110;
  --cream: #f5f0e8;
  --cream-dim: #d4cfc6;
  --text-muted: #8a8279;
  --border: rgba(201,168,76,0.12);
  --border-hover: rgba(201,168,76,0.35);
}

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--dark);
  color: var(--cream);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: var(--gold); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--gold-light); }

/* === NAVIGATION === */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.2rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(to bottom, rgba(10,10,10,0.97), rgba(10,10,10,0.8));
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(201,168,76,0.06);
}
.nav-logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--gold);
}
.nav-logo span { font-weight: 400; color: var(--cream-dim); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cream-dim);
  transition: color 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--gold); }

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--cream);
  margin: 5px 0;
  transition: 0.3s;
}

/* === PAGE HEADER === */
.page-header {
  padding: 8rem 3rem 3rem;
  text-align: center;
  background:
    radial-gradient(ellipse at 50% 30%, rgba(201,168,76,0.06) 0%, transparent 60%),
    var(--dark);
}
.page-header .section-label {
  font-size: 0.6rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}
.page-header .section-label::before,
.page-header .section-label::after {
  content: '';
  width: 30px;
  height: 1px;
  background: var(--gold);
}
.page-header h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1rem;
}
.page-header p {
  font-weight: 300;
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--cream-dim);
  max-width: 600px;
  margin: 0 auto;
}

/* === DIVIDER === */
.divider {
  width: 100%;
  padding: 0 3rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.divider .line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--gold), transparent);
}
.divider .line:last-child {
  background: linear-gradient(to left, var(--gold), transparent);
}
.divider .diamond {
  width: 6px; height: 6px;
  background: var(--gold);
  transform: rotate(45deg);
  flex-shrink: 0;
}

/* === FILTER PILLS === */
.filters {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  padding: 2rem 3rem;
  flex-wrap: wrap;
}
.filter-pill {
  padding: 0.5rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: transparent;
  color: var(--cream-dim);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
}
.filter-pill:hover {
  border-color: var(--border-hover);
  color: var(--cream);
}
.filter-pill.active {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--dark);
  font-weight: 500;
}

/* === ARTWORK GRID === */
.artwork-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  padding: 2rem 3rem 4rem;
  max-width: 1400px;
  margin: 0 auto;
}
.artwork-card {
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s ease;
  background: var(--dark-card);
}
.artwork-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(201,168,76,0.08);
}
.artwork-card-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
  background: linear-gradient(135deg, rgba(201,168,76,0.08), rgba(201,168,76,0.03));
}
.artwork-card-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, rgba(201,168,76,0.1), rgba(201,168,76,0.03));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.artwork-card-placeholder::before {
  content: '';
  position: absolute;
  width: 120px; height: 120px;
  border: 1px solid rgba(201,168,76,0.15);
  transform: rotate(45deg);
}
.artwork-card-placeholder::after {
  content: '';
  position: absolute;
  width: 60px; height: 60px;
  border: 1px solid rgba(201,168,76,0.1);
  transform: rotate(45deg);
  top: 20%; left: 20%;
}
.artwork-card-placeholder svg {
  width: 48px; height: 48px;
  opacity: 0.25;
  color: var(--gold);
  position: relative;
  z-index: 1;
}
.artwork-card-body {
  padding: 1.5rem;
}
.artwork-card-category {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.5rem;
}
.artwork-card-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.4rem;
}
.artwork-card-meta {
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--text-muted);
}
.artwork-card-featured {
  display: inline-block;
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid var(--gold);
  padding: 0.2rem 0.6rem;
  margin-top: 0.75rem;
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border: 1px solid var(--gold);
  border-radius: 2px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-primary {
  background: var(--gold);
  color: var(--dark);
}
.btn-primary:hover {
  background: var(--gold-light);
  color: var(--dark);
}
.btn-outline {
  background: transparent;
  color: var(--gold);
}
.btn-outline:hover {
  background: rgba(201,168,76,0.1);
}
.btn-sm {
  padding: 0.5rem 1.2rem;
  font-size: 0.75rem;
}
.btn-danger {
  border-color: #c94c4c;
  color: #c94c4c;
  background: transparent;
}
.btn-danger:hover {
  background: rgba(201,76,76,0.1);
}

/* === FOOTER === */
.footer {
  padding: 3rem;
  text-align: center;
  border-top: 1px solid rgba(201,168,76,0.08);
  margin-top: 4rem;
}
.footer .logo-footer {
  font-family: 'Playfair Display', serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.05em;
}
.footer p {
  margin-top: 0.75rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* === FORMS === */
.form-group {
  margin-bottom: 1.25rem;
}
.form-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cream-dim);
  margin-bottom: 0.5rem;
}
.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 2px;
  color: var(--cream);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  transition: border-color 0.2s;
}
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--gold);
}
.form-textarea { resize: vertical; min-height: 100px; }
.form-select option { background: var(--dark); color: var(--cream); }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.form-check {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
}
.form-check input[type="checkbox"] {
  width: 18px; height: 18px;
  accent-color: var(--gold);
  cursor: pointer;
}

/* === LOADING === */
.loading {
  text-align: center;
  padding: 4rem;
  color: var(--text-muted);
  font-size: 1rem;
  letter-spacing: 0.05em;
}
.loading::after {
  content: '';
  display: block;
  width: 40px; height: 40px;
  margin: 1.5rem auto 0;
  border: 2px solid var(--border);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* === EMPTY STATE === */
.empty-state {
  text-align: center;
  padding: 6rem 2rem;
}
.empty-state h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--cream);
}
.empty-state p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* === TOAST === */
.toast {
  position: fixed;
  bottom: 2rem; right: 2rem;
  padding: 1rem 1.5rem;
  background: var(--dark-card);
  border: 1px solid var(--gold);
  border-radius: 2px;
  color: var(--cream);
  font-size: 0.9rem;
  z-index: 1000;
  transform: translateY(120%);
  transition: transform 0.3s ease;
}
.toast.show { transform: translateY(0); }
.toast.error { border-color: #c94c4c; }

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .nav { padding: 1rem 1.5rem; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: rgba(10,10,10,0.97);
    backdrop-filter: blur(12px);
    padding: 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid var(--border);
  }
  .nav-toggle { display: block; }

  .page-header { padding: 7rem 1.5rem 2rem; }
  .artwork-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    padding: 1.5rem;
    gap: 1.5rem;
  }
  .filters { padding: 1.5rem; gap: 0.5rem; }
  .divider { padding: 0 1.5rem; }
  .footer { padding: 2rem 1.5rem; }
  .form-row { grid-template-columns: 1fr; }
}