:root {
  --color-bg: #f3f3f3;
  --color-bg-paper: #ffffff;
  --color-bg-sunken: #ececec;
  --color-ink: #121212;
  --color-ink-muted: #6c6c6c;
  --color-ink-soft: #9a9a9a;
  --color-rule: #dadada;
  --color-rule-strong: #bfbfbf;
  --color-accent: #121212;
  --color-accent-hover: #2a2a2a;
  --color-success: #2f7d32;

  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'Raleway', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius: 2px;
  --radius-lg: 4px;
  --shadow-soft: 0 1px 2px rgba(18, 18, 18, 0.04), 0 4px 16px rgba(18, 18, 18, 0.03);
}

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

body {
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- Site chrome ---------- */
.site-header {
  padding: 2rem 1.25rem 1.5rem;
  text-align: center;
}

.brand {
  display: inline-block;
  line-height: 0;
  text-decoration: none;
}

.brand-mark {
  width: 96px;
  height: auto;
  display: block;
}

.tagline {
  margin: 1rem 0 0;
  color: var(--color-ink-muted);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  font-weight: 500;
}

.site-footer {
  padding: 2rem 1.25rem 1.75rem;
  text-align: center;
  color: var(--color-ink-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--color-rule);
  margin-top: auto;
}

.site-footer a { color: var(--color-ink); }

/* ---------- App container ---------- */
#app {
  flex: 1;
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0.5rem 1.25rem 3rem;
}

.state { animation: fade-in 200ms ease-out; }

.state--center {
  min-height: 40vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 1rem;
}

.state--center h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 600;
  margin: 0;
  color: var(--color-ink);
  letter-spacing: -0.005em;
}

.state--center p {
  max-width: 32rem;
  color: var(--color-ink-muted);
  margin: 0;
  font-size: 0.95rem;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Spinner ---------- */
.spinner {
  width: 32px;
  height: 32px;
  border: 2px solid var(--color-rule);
  border-top-color: var(--color-ink);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ---------- Order badge ---------- */
.order-badge {
  display: inline-block;
  padding: 0.3rem 0.85rem;
  background: var(--color-bg-paper);
  border: 1px solid var(--color-rule);
  border-radius: 999px;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  margin: 0 0 1.5rem;
  font-weight: 500;
}

.order-badge span {
  color: var(--color-ink);
  font-weight: 600;
  letter-spacing: 0.06em;
}

/* ---------- Tabs ---------- */
.tabs {
  display: flex;
  gap: 0.1rem;
  border-bottom: 1px solid var(--color-rule);
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.tabs::-webkit-scrollbar { display: none; }

.tab {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 0.9rem 1.25rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-ink-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  transition: color 140ms ease, border-color 140ms ease;
  white-space: nowrap;
  margin-bottom: -1px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tab:hover { color: var(--color-ink); }
.tab:focus-visible {
  outline: 2px solid var(--color-ink);
  outline-offset: -2px;
  border-radius: 2px 2px 0 0;
}

.tab[aria-selected="true"] {
  color: var(--color-ink);
  border-bottom-color: var(--color-ink);
}

/* Tab progress icon */
.tab-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  font-size: 10px;
  line-height: 1;
  flex-shrink: 0;
  border: 1.5px solid var(--color-rule-strong);
  background: transparent;
  color: transparent;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
}

.tab-icon::after { content: ""; }

.tab-icon[data-status="done"] {
  background: var(--color-success);
  border-color: var(--color-success);
  color: white;
}

.tab-icon[data-status="done"]::after { content: "✓"; font-weight: 700; }

/* ---------- Panels ---------- */
.panels { padding: 2rem 0 0; }

.panel {
  background: var(--color-bg-paper);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-soft);
}

.panel-header { margin-bottom: 1.5rem; }

.panel-header h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: var(--color-ink);
  letter-spacing: -0.005em;
  line-height: 1.15;
}

.panel-subtitle {
  color: var(--color-ink-muted);
  margin: 0;
  font-size: 0.95rem;
  max-width: 38rem;
}

.panel-placeholder {
  border: 1px dashed var(--color-rule-strong);
  border-radius: var(--radius);
  padding: 3.5rem 1.5rem;
  text-align: center;
  color: var(--color-ink-soft);
  background: var(--color-bg-sunken);
  font-size: 0.95rem;
}

.panel-placeholder p { margin: 0; }

.panel-meta {
  color: var(--color-ink-muted);
  font-size: 0.88rem;
  margin: 0.85rem 0 1.15rem;
}

/* ---------- Submission preview ---------- */
.submission-preview-frame {
  background: var(--color-bg-sunken);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius);
  aspect-ratio: 1 / 1;
  max-width: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-ink-soft);
  font-size: 0.85rem;
  font-style: italic;
  overflow: hidden;
}

.submission-preview-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* ---------- Buttons ---------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 140ms, border-color 140ms, color 140ms, transform 80ms;
  text-decoration: none;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.button:active { transform: translateY(1px); }

.button--primary {
  background: var(--color-ink);
  color: white;
  border-color: var(--color-ink);
}
.button--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

.button--ghost {
  background: transparent;
  border-color: var(--color-ink);
  color: var(--color-ink);
}
.button--ghost:hover {
  background: var(--color-ink);
  color: white;
}

/* ---------- Links ---------- */
a {
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-color: var(--color-rule-strong);
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
a:hover { text-decoration-color: currentColor; }

/* ---------- Mobile ---------- */
@media (max-width: 640px) {
  .site-header { padding: 1.5rem 1rem 1rem; }
  .brand-mark { width: 80px; }
  #app { padding: 0.25rem 1rem 2rem; }
  .tab { padding: 0.85rem 0.9rem; font-size: 0.78rem; }
  .panel { padding: 1.5rem 1.25rem; }
  .panel-header h2 { font-size: 1.55rem; }
  .panel-placeholder { padding: 2.5rem 1rem; }
  .state--center h2 { font-size: 1.6rem; }
}

/* ---------- Engraving tool ---------- */
.engraving-tool {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 1.5rem;
  align-items: start;
}

.preview-stage {
  position: relative;
  aspect-ratio: 1 / 1;
  background: var(--color-bg-sunken);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius);
  overflow: hidden;
}

.preview-canvas {
  width: 100%;
  height: 100%;
  display: block;
  position: relative;
  z-index: 1;
}

.preview-canvas.is-pass-through {
  pointer-events: none;
}

.preview-map {
  position: absolute;
  inset: 0;
}

.preview-empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-ink-soft);
  font-size: 0.95rem;
  padding: 1rem;
  pointer-events: none;
  font-style: italic;
}

.tool-controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.upload-drop {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 0.35rem;
  padding: 1.5rem 1rem;
  border: 1.5px dashed var(--color-rule-strong);
  border-radius: var(--radius);
  background: var(--color-bg);
  cursor: pointer;
  transition: border-color 140ms, background 140ms;
}

.upload-drop input[type="file"] {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.upload-drop:hover,
.upload-drop.is-dragover {
  border-color: var(--color-ink);
  background: var(--color-bg-paper);
}

.upload-drop-icon {
  font-size: 1.35rem;
  color: var(--color-ink-muted);
  line-height: 1;
}

.upload-drop-label {
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--color-ink);
}

.upload-drop-hint {
  font-size: 0.78rem;
  color: var(--color-ink-muted);
}

.upload-tools {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.upload-tool-row {
  display: flex;
  gap: 0.4rem;
}

.upload-tool-row .button {
  flex: 1;
}

.upload-tool-row .button[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
}

.control-group {
  border: 1px solid var(--color-rule);
  border-radius: var(--radius);
  padding: 0.75rem 1rem 1rem;
  margin: 0;
  background: var(--color-bg);
  transition: opacity 140ms;
}

.control-group:disabled { opacity: 0.45; }
.control-group:disabled .control-row { cursor: not-allowed; }

.control-legend {
  padding: 0 0.4rem;
  margin-left: -0.4rem;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--color-ink-muted);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.control-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.4rem 0;
  font-size: 0.9rem;
  cursor: pointer;
  color: var(--color-ink);
}

.control-label {
  flex: 0 0 5.5rem;
  font-size: 0.82rem;
  color: var(--color-ink-muted);
}

.control-label--strong {
  color: var(--color-ink);
  font-weight: 600;
}

.control-row input[type="range"] {
  flex: 1;
  accent-color: var(--color-ink);
  min-width: 0;
}

.control-row output {
  flex: 0 0 2.2rem;
  text-align: right;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.82rem;
  color: var(--color-ink-muted);
}

.control-row--check input[type="checkbox"] {
  accent-color: var(--color-ink);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.preset-gallery {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.preset-gallery-label {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--color-ink-muted);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.preset-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 0.5rem;
}

.preset-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius);
  background: var(--color-bg-paper);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.78rem;
  color: var(--color-ink);
  transition: border-color 140ms, transform 80ms, background 140ms;
}

.preset-option:hover { border-color: var(--color-ink); }
.preset-option:active { transform: translateY(1px); }

.preset-option.is-selected {
  border-color: var(--color-ink);
  background: var(--color-bg-sunken);
}

.preset-thumb {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 2px;
  background: white;
  display: block;
}

.tool-status {
  margin: 0;
  padding: 0.55rem 0.75rem;
  background: #fdf4e6;
  border: 1px solid #e9cb9c;
  color: #4a2f00;
  border-radius: var(--radius);
  font-size: 0.85rem;
  line-height: 1.4;
}

.tool-status[data-status-kind="error"] {
  background: #fdecec;
  border-color: #e9a9a9;
  color: #611616;
}

/* ---------- Source picker ---------- */
.source-picker {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius);
  padding: 2px;
  background: var(--color-bg-sunken);
}

.source-tab {
  background: transparent;
  border: none;
  padding: 0.55rem 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  cursor: pointer;
  border-radius: 2px;
  transition: background 140ms, color 140ms;
}

.source-tab:hover { color: var(--color-ink); }
.source-tab.is-active {
  background: var(--color-bg-paper);
  color: var(--color-ink);
  box-shadow: var(--shadow-soft);
}

.source-panel {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

/* ---------- Map widget ---------- */
.mapboxgl-ctrl-bottom-left,
.mapboxgl-ctrl-bottom-right { display: none; }

.preview-stage .mapboxgl-ctrl-top-right {
  z-index: 2;
  margin: 0.5rem;
}

.preview-stage .mapboxgl-ctrl-group {
  background: #ffffff;
  border-radius: 4px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.55), 0 0 0 2px rgba(255, 255, 255, 0.9);
}

.preview-stage .mapboxgl-ctrl-group button {
  width: 32px;
  height: 32px;
}

.map-hint {
  margin: 0;
  padding: 0.55rem 0.75rem;
  background: var(--color-bg-sunken);
  border: 1px solid var(--color-rule);
  color: var(--color-ink-muted);
  border-radius: var(--radius);
  font-size: 0.82rem;
  line-height: 1.4;
}

.map-inputs {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.map-input-row {
  display: flex;
  gap: 0.4rem;
  align-items: stretch;
}

.text-input {
  flex: 1;
  min-width: 0;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius);
  background: var(--color-bg-paper);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--color-ink);
}

.text-input:focus {
  outline: none;
  border-color: var(--color-ink);
}

.text-input--narrow {
  flex: 1 1 0;
  width: 0;
}

.text-input--area {
  width: 100%;
  resize: vertical;
  min-height: 4.5rem;
  font-family: var(--font-sans);
  line-height: 1.4;
}

.select-input {
  flex: 1;
  min-width: 0;
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius);
  background: var(--color-bg-paper);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--color-ink);
  cursor: pointer;
}

.button--small {
  padding: 0.45rem 0.85rem;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.tnc-inlay-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 30%, #fff 0%, #eaeaf2 45%, #c4c8d6 100%);
  border: 1.5px solid #2a2a2a;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.85), 0 1px 2px rgba(0, 0, 0, 0.35);
  cursor: grab;
}

.tnc-inlay-dot:active { cursor: grabbing; }

@media (max-width: 720px) {
  .engraving-tool {
    grid-template-columns: 1fr;
  }
}

/* ---------- Utilities ---------- */
[hidden] { display: none !important; }