:root {
  --bg: rgb(14, 13, 12);
  --surface: #161513;
  --surface-2: #1e1c1a;
  --border: #2a2826;
  --border-hover: #3a3835;
  --text-primary: #e8e4de;
  --text-muted: #7a7570;
  --text-dim: #4a4845;
  --accent: rgb(200, 169, 110);
  --accent-dim: #8a7048;
}

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

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: 'DM Mono', monospace;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.4;
}

header {
  border-bottom: 1px solid var(--border);
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.6rem;
  font-weight: 300;
  font-style: italic;
  color: var(--accent);
  letter-spacing: 0.05em;
}

.logo-sub {
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.bmc-btn {
  padding: 0.3rem 0.6rem;
  background: transparent;
  border: 1px solid var(--accent-dim);
  color: var(--accent);
  font-family: 'DM Mono', monospace;
  text-align: center;
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.15s;
}

.bmc-btn:hover {
  background: rgba(200, 169, 110, 0.08);
  border-color: var(--accent);
}

main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 260px;
  grid-template-rows: 1fr auto;
  gap: 0;
  overflow: hidden;
}

#image-display {
  grid-column: 1;
  grid-row: 1;
  border-right: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  min-height: 60vh;
  overflow: hidden;
  background: var(--surface);
}

#upload-prompt {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  padding: 3rem;
  border: 1px dashed var(--border-hover);
  transition: border-color 0.2s;
}

#upload-prompt:hover { border-color: var(--accent-dim); }

#upload-prompt .icon {
  font-size: 2rem;
  color: var(--text-dim);
}

#upload-prompt p {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  text-align: center;
  text-transform: uppercase;
}

#upload-prompt span {
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}

#canvas-container {
  display: none;
  width: 100%;
  height: 100%;
  align-items: center;
  justify-content: center;
  position: relative;
}

canvas {
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
  display: block;
}

#source-canvas { display: none; }

#processing-overlay {
  display: none;
  position: absolute;
  inset: 0;
  background: rgba(14,13,12,0.7);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.spinner {
  width: 24px;
  height: 24px;
  border: 1px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

#sidebar {
  grid-column: 2;
  grid-row: 1 / 3;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.sidebar-section {
  border-bottom: 1px solid var(--border);
  padding: 1.25rem;
}

.sidebar-label {
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}

#upload {
  display: none;
}

.upload-btn {
  width: 100%;
  padding: 0.6rem 1rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.15s;
  text-align: center;
}

.upload-btn:hover {
  border-color: var(--accent-dim);
  color: var(--text-primary);
}

#filename {
  margin-top: 0.5rem;
  font-size: 0.6rem;
  color: var(--text-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

#preset-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.preset-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.75rem;
  cursor: pointer;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  border: 1px solid transparent;
  transition: all 0.15s;
  position: relative;
}

.preset-item:hover {
  color: var(--text-primary);
  border-color: var(--border);
}

.preset-item.active {
  color: var(--accent);
  border-color: var(--accent-dim);
  background: rgba(200, 169, 110, 0.05);
}

.preset-item .preset-tag {
  font-size: 0.55rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}

.preset-item.active .preset-tag {
  color: var(--accent-dim);
}

.preset-none {
  font-style: italic;
  color: var(--text-dim);
}

.slider-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

input[type=range] {
  flex: 1;
  -webkit-appearance: none;
  height: 1px;
  background: var(--border);
  outline: none;
}

input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
}

input[type=range]::-webkit-slider-thumb:hover {
  background: var(--text-primary);
}

.slider-value {
  font-size: 0.6rem;
  color: var(--text-muted);
  min-width: 2rem;
  text-align: right;
}

.export-btn {
  margin: 1.25rem;
  padding: 0.75rem;
  background: var(--accent);
  color: #0e0d0c;
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
  display: block;
  width: calc(100% - 2.5rem);
  text-align: center;
}

.export-btn:hover { background: #d4b87e; }

.export-btn:disabled {
  background: var(--border);
  color: var(--text-dim);
  cursor: not-allowed;
}

#image-options {
  grid-column: 1;
  grid-row: 2;
  border-right: 1px solid var(--border);
  border-top: 1px solid var(--border);
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.meta-item {
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}

.meta-item span {
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .bmc-btn {
    font-size: 0.6rem;
    padding: 0.4rem 0.7rem;
    letter-spacing: 0.1em;
  }

  main {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
  }

  #image-display {
    grid-column: 1;
    grid-row: 1;
    min-height: 40vh;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  #image-options {
    grid-column: 1;
    grid-row: 2;
    border-right: none;
    overflow-x: auto;
    white-space: nowrap;
  }

  #sidebar {
    grid-column: 1;
    grid-row: 3;
    overflow-y: visible;
  }

  #preset-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
  }

  .export-btn {
    margin: 1.25rem;
    width: calc(100% - 2.5rem);
    padding: 1rem;
    font-size: 0.75rem;
  }
}