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

:root {
  --ink: #1c1c1e;
  --paper: #ffffff;
  --surface: #f7f6f4;
  --surface-soft: #eeece8;
  --warm: #e3dfd7;
  --rule: #ccc8be;
  --muted: #78746e;
  --accent: #c44e2c;
  --accent-strong: #a33820;
  --accent2: #2e72c2;
  --accent3: #df9020;
  --success: #3d7a35;
  --shadow: 0 4px 24px rgba(28, 28, 30, 0.07), 0 1px 4px rgba(28, 28, 30, 0.04);
  --mono: 'DM Mono', monospace;
  --serif: 'DM Serif Display', serif;
  --sans: 'DM Sans', sans-serif;
}

:root[data-theme="dark"] {
  --ink: #eeeeed;
  --paper: #111116;
  --surface: #1a1a20;
  --surface-soft: #222229;
  --warm: #2c2c36;
  --rule: #3c3c48;
  --muted: #90909e;
  --accent: #e86040;
  --accent-strong: #f07252;
  --accent2: #68b4f8;
  --accent3: #f0b840;
  --success: #70c060;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.38), 0 1px 4px rgba(0, 0, 0, 0.22);
}

html { background: var(--paper); }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 300;
  min-height: 100vh;
  transition: background 0.2s ease, color 0.2s ease;
}

button, input, select { font: inherit; }
button { cursor: pointer; }

/* ─── Site nav (shared across all pages) ────────────────────────────────── */

.site-nav {
  height: 56px;
  padding: 0 24px;
  border-bottom: 1.5px solid var(--rule);
  display: flex;
  align-items: center;
  gap: 0;
  background: rgba(255, 255, 255, 0.92);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
}
:root[data-theme="dark"] .site-nav { background: rgba(17, 17, 22, 0.92); }

.nav-brand {
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
  margin-right: 28px;
  flex-shrink: 0;
}
.nav-brand em { color: var(--accent); }

.nav-tabs {
  display: flex;
  align-items: stretch;
  gap: 0;
  flex: 1;
}
.nav-tab {
  display: inline-flex;
  align-items: center;
  padding: 0 16px;
  height: 56px;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  cursor: pointer;
  user-select: none;
}
.nav-tab:hover:not(.nav-tab-soon):not(.nav-tab-gated) { color: var(--ink); }
.nav-tab.active { color: var(--ink); border-bottom-color: var(--accent); }
.nav-tab-soon { opacity: 0.35; cursor: default; }
.nav-tab-gated { opacity: 0.55; }
.nav-tab-gated::after { content: ' 🔒'; font-size: 0.6rem; }

.nav-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.nav-user { font-size: 0.75rem; color: var(--muted); font-family: var(--sans); }

.auth-link {
  border: 1px solid var(--rule);
  color: var(--ink);
  background: transparent;
  text-decoration: none;
  border-radius: 999px;
  padding: 6px 12px;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: all 0.15s ease;
  cursor: pointer;
}
.auth-link:hover { border-color: var(--accent); color: var(--accent); }
.auth-link.primary { background: var(--accent); color: white; border-color: var(--accent); }
.auth-link.primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); color: white; }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.theme-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.theme-switch input { display: none; }
.theme-slider {
  width: 38px;
  height: 20px;
  border-radius: 999px;
  border: 1px solid var(--rule);
  background: var(--warm);
  position: relative;
}
.theme-slider::after {
  content: '';
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--surface);
  position: absolute;
  top: 2px;
  left: 2px;
  transition: transform 0.18s ease;
  box-shadow: 0 1px 4px rgba(0,0,0,.18);
}
.theme-switch input:checked + .theme-slider { background: var(--accent); border-color: var(--accent); }
.theme-switch input:checked + .theme-slider::after { transform: translateX(18px); }

.studio-layout {
  min-height: calc(100vh - 56px);
  display: grid;
  grid-template-columns: 74px minmax(320px, 420px) 1fr;
}

.tool-rail {
  border-right: 1px solid var(--warm);
  background: var(--surface-soft);
  padding: 16px 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: sticky;
  top: 56px;
  height: calc(100vh - 56px);
}
.tool-btn {
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  border-radius: 16px;
  padding: 12px 6px;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.tool-btn.active, .tool-btn:hover {
  border-color: var(--rule);
  background: var(--surface);
  color: var(--accent);
}

.studio-sidebar {
  border-right: 1.5px solid var(--rule);
  background: var(--paper);
  overflow-y: auto;
  max-height: calc(100vh - 56px);
  padding: 18px;
}

.studio-card {
  background: var(--surface);
  border: 1px solid var(--warm);
  border-radius: 22px;
  box-shadow: var(--shadow);
  padding: 18px;
  margin-bottom: 16px;
}

.section-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.section-label::after { content: ''; flex: 1; height: 1px; background: var(--warm); }
.section-label.no-line::after { display: none; }

.project-title-label { font-size: .72rem; font-weight: 600; display: block; margin-bottom: 6px; }
@keyframes title-flash { 0%,100% { border-color: var(--rule); } 40% { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(196,78,44,.18); } }
#title.title-suggested { animation: title-flash 1.5s ease; }
.field { margin-bottom: 14px; }
label { display: block; font-size: 0.74rem; font-weight: 600; margin-bottom: 6px; color: var(--ink); }
.field-note { color: var(--muted); font-size: .76rem; line-height: 1.45; margin-top: 8px; }

input[type=text], input[type=number], select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--rule);
  border-radius: 12px;
  background: var(--paper);
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(139,58,42,.12); }

.dropzone-studio {
  border: 1.5px dashed var(--rule);
  border-radius: 18px;
  padding: 30px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
  margin-top: 14px;
  background: var(--paper);
  overflow: hidden;
}
.dropzone-studio:hover, .dropzone-studio.drag-over {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 6%, transparent);
}
.dropzone-studio.has-file { border-style: solid; padding: 0; cursor: default; }
.dropzone-studio input[type=file] { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%; z-index: 1; }
.dropzone-studio.has-file > input[type=file] { pointer-events: none; z-index: 0; }
#preview-thumb { display: none !important; }
#dz-empty { display: flex; flex-direction: column; align-items: center; pointer-events: none; }
.dropzone-studio.has-file #dz-empty { display: none; }
#dropzone-icon { font-size: 2.3rem; margin-bottom: 10px; color: var(--rule); }
.dropzone-studio p { font-size: 0.84rem; color: var(--muted); line-height: 1.45; }

#crop-canvas {
  display: none;
  width: 100%;
  height: 280px;
  border-radius: 16px 16px 0 0;
  cursor: grab;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  z-index: 2;
}
#crop-canvas:active { cursor: grabbing; }
.dropzone-studio.has-file #crop-canvas { display: block; }

#crop-controls {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 8px 12px;
  border-top: 1px solid var(--warm);
  z-index: 2;
  position: relative;
}
.dropzone-studio.has-file #crop-controls { display: flex; }
.crop-ctrl-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.crop-zoom-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 2px;
}
.crop-zoom-row input[type=range] { flex: 1; accent-color: var(--accent); }

#crop-dim-label {
  flex: 1;
  text-align: center;
  font-family: var(--mono);
  font-size: .62rem;
  color: var(--muted);
  letter-spacing: .06em;
}
.crop-ctrl-btn, .crop-change-btn {
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  background: none;
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 5px 10px;
  color: var(--muted);
  cursor: pointer;
  text-decoration: none;
  transition: border-color .15s, color .15s;
  white-space: nowrap;
}
.crop-ctrl-btn:hover, .crop-change-btn:hover { border-color: var(--accent); color: var(--accent); }
.crop-fit-label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
}
.crop-fit-label input[type="checkbox"] { accent-color: var(--accent); cursor: pointer; }
.zoom-ctrl {
  display: inline-flex;
  border: 1px solid var(--rule);
  border-radius: 999px;
  overflow: hidden;
}
.zoom-step-btn {
  background: none;
  border: none;
  padding: 4px 10px;
  font-size: 1rem;
  line-height: 1;
  color: var(--muted);
  cursor: pointer;
  transition: background .12s, color .12s;
}
.zoom-step-btn:hover:not(:disabled) { background: var(--surface); color: var(--ink); }
.zoom-step-btn:first-child { border-right: 1px solid var(--rule); }
.zoom-step-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.crop-zoom-row input[type=range]:disabled { opacity: 0.3; cursor: not-allowed; }

.preset-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.preset-card {
  text-align: left;
  padding: 12px;
  min-height: 74px;
  border: 1px solid var(--warm);
  border-radius: 16px;
  background: var(--paper);
  color: var(--ink);
  font-weight: 700;
  transition: all .15s ease;
}
.preset-card span { display: block; color: var(--muted); font-weight: 300; font-size: .72rem; margin-top: 4px; }
.preset-card:hover, .preset-card.active { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(139,58,42,.10); }
.preset-card.active { background: color-mix(in srgb, var(--accent) 9%, var(--surface)); }

.compact-range label { display: flex; justify-content: space-between; align-items: center; }
input[type=range] { width: 100%; accent-color: var(--accent); }
.range-val { font-family: var(--mono); font-size: .72rem; color: var(--accent); }

.advanced-card summary {
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: .1em;
  font-size: .68rem;
  color: var(--muted);
  cursor: pointer;
}
.advanced-card[open] summary { margin-bottom: 16px; }
.advanced-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.toggle-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 14px 0; }
.toggle-label { font-size: .8rem; color: var(--ink); }

/* Per-param reset indicator in Advanced Settings */
.param-reset-btn {
  background: none;
  border: none;
  padding: 0 0 0 5px;
  font-size: .75rem;
  color: var(--accent);
  cursor: pointer;
  opacity: 0.8;
  transition: opacity .15s, transform .15s;
  vertical-align: middle;
}
.param-reset-btn:hover { opacity: 1; transform: rotate(-30deg); }
.toggle { position: relative; width: 38px; height: 22px; flex-shrink: 0; }
.toggle input { opacity: 0; width: 0; height: 0; }
.slider-toggle { position: absolute; inset: 0; background: var(--warm); border-radius: 22px; border: 1px solid var(--rule); }
.slider-toggle::before { content: ''; position: absolute; width: 16px; height: 16px; left: 2px; top: 2px; background: var(--surface); border-radius: 50%; transition: .18s; }
.toggle input:checked + .slider-toggle { background: var(--accent); border-color: var(--accent); }
.toggle input:checked + .slider-toggle::before { transform: translateX(16px); }

/* ---- Action bar ---- */
.studio-main {
  padding: 28px;
  overflow-y: auto;
  max-height: calc(100vh - 56px);
  position: relative;
}

.studio-action-bar {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 8px 16px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.action-bar-left, .action-bar-right {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}
.action-bar-center {
  flex: 1;
  display: flex;
  justify-content: center;
}

/* Icon buttons */
.icon-btn {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  border-radius: 8px;
  color: var(--muted);
  transition: background 0.12s, color 0.12s;
}
.icon-btn:hover:not(:disabled) { background: var(--surface); color: var(--ink); }
.icon-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.icon-btn.active { color: var(--accent); }
.icon-btn.active:hover:not(:disabled) { background: var(--surface); color: var(--accent-strong); }

/* Preview status */
.preview-status {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 20px;
}
.preview-status.running { color: var(--accent); }
.preview-status.done { color: var(--success); }
.preview-status.error { color: #d04040; }

/* Spinner (small, inline) */
.spinner-sm {
  width: 10px; height: 10px;
  border: 1.5px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

/* Save button */
#save-btn {
  padding: 8px 20px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: all 0.15s;
  white-space: nowrap;
}
#save-btn:hover:not(:disabled) { background: var(--accent-strong); }
#save-btn:disabled { background: var(--warm); color: var(--muted); cursor: not-allowed; }

/* Save status text */
.save-status {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  white-space: nowrap;
  padding-right: 4px;
}

/* Inline title editing */
#result-title[contenteditable] {
  outline: none;
  border-radius: 4px;
  padding: 0 4px;
  margin: 0 -4px;
  cursor: text;
  transition: background 0.15s;
}
#result-title[contenteditable]:hover { background: var(--surface); }
#result-title[contenteditable]:focus { background: var(--surface); }
.confidence-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(120px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}
.confidence-card {
  background: var(--surface);
  border: 1px solid var(--warm);
  border-top: 3px solid var(--warm);
  border-radius: 18px;
  padding: 16px;
  box-shadow: var(--shadow);
}
.confidence-row .confidence-card:nth-child(1) { border-top-color: var(--accent); }
.confidence-row .confidence-card:nth-child(2) { border-top-color: var(--accent2); }
.confidence-row .confidence-card:nth-child(3) { border-top-color: var(--success); }
.confidence-row .confidence-card:nth-child(4) { border-top-color: var(--accent3); }
.confidence-row .confidence-card:nth-child(5) { border-top-color: var(--accent2); }
.confidence-card span {
  display: block;
  font-family: var(--serif);
  font-size: 1.55rem;
  line-height: 1;
  margin-bottom: 6px;
}
.confidence-card label {
  font-family: var(--mono);
  color: var(--muted);
  font-size: .58rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin: 0;
}

#status { display: none; align-items: center; gap: 12px; padding: 14px 18px; border-radius: 16px; font-size: .82rem; font-family: var(--mono); margin-bottom: 18px; }
#status.running { display: flex; background: color-mix(in srgb, var(--accent2) 12%, transparent); border: 1px solid color-mix(in srgb, var(--accent2) 30%, transparent); color: var(--accent2); }
#status.error { display: flex; background: color-mix(in srgb, var(--accent) 12%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent); color: var(--accent); }
.spinner { width: 16px; height: 16px; border: 2px solid rgba(42,92,139,.2); border-top-color: var(--accent2); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Auth nudge banner */
.auth-nudge {
  padding: 12px 16px !important;
  background: color-mix(in srgb, var(--accent) 8%, var(--surface)) !important;
  border-color: color-mix(in srgb, var(--accent) 25%, var(--warm)) !important;
}
.auth-nudge-text { font-size: 0.78rem; color: var(--muted); line-height: 1.45; margin: 0; }
.auth-nudge-link { color: var(--accent); text-decoration: none; font-weight: 600; }
.auth-nudge-link:hover { text-decoration: underline; }

/* Clear image button */
.crop-clear-btn { color: var(--muted); margin-left: auto; }
.crop-clear-btn:hover { border-color: #c0392b !important; color: #c0392b !important; }

/* Drag-to-main overlay */
.studio-main.drop-target::after {
  content: 'Drop image here';
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-size: 2.5rem;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, var(--paper));
  border: 3px dashed var(--accent);
  pointer-events: none;
}

.canvas-empty {
  min-height: 460px;
  border: 1px dashed var(--rule);
  border-radius: 32px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 50px;
  color: var(--muted);
  background: linear-gradient(135deg, color-mix(in srgb, var(--surface) 80%, transparent), color-mix(in srgb, var(--warm) 35%, transparent));
}
.canvas-empty h3 { font-family: var(--serif); font-size: 2rem; font-weight: 400; color: var(--ink); }
.canvas-empty p { max-width: 420px; line-height: 1.55; }
.empty-icon { font-size: 3rem; margin-bottom: 10px; }

.studio-results { display: none; }
.studio-results.visible { display: block; }
.results-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.results-header h2 { font-family: var(--serif); font-size: 2rem; font-weight: 400; }
.meta-pills { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.pill { font-family: var(--mono); font-size: .62rem; letter-spacing: .08em; text-transform: uppercase; padding: 6px 10px; border: 1px solid var(--rule); border-radius: 999px; color: var(--muted); }
.pill.accent { border-color: var(--accent); color: var(--accent); }

/* Difficulty label coloring on the confidence card */
#estimate-difficulty[data-level="Beginner"]    { color: var(--success); }
#estimate-difficulty[data-level="Confident"]   { color: var(--success); }
#estimate-difficulty[data-level="Intermediate"]{ color: var(--accent3); }
#estimate-difficulty[data-level="Advanced"]    { color: var(--accent); }
#estimate-difficulty[data-level="Expert"]      { color: var(--accent); }

.studio-preview-single { margin-bottom: 22px; }
.preview-card {
  border: 1px solid var(--warm);
  border-radius: 26px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow);
  position: relative;
}
.preview-card-label { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; font-family: var(--mono); font-size: .62rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); border-bottom: 1px solid var(--warm); background: var(--surface-soft); }
.preview-label-controls { display: flex; gap: 6px; }
.preview-card-body { position: relative; overflow: hidden; }
.preview-card img { width: 100%; display: block; image-rendering: pixelated; }
.preview-ctrl-btn { font-family: var(--mono); font-size: .62rem; letter-spacing: .08em; text-transform: uppercase; padding: 3px 9px; border-radius: 20px; border: 1px solid var(--border); background: transparent; color: var(--muted); cursor: pointer; transition: background .15s, color .15s, border-color .15s; }
.preview-ctrl-btn:hover, .preview-ctrl-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* Panel labels overlay */
.panel-labels-overlay { position: absolute; inset: 0; pointer-events: none; z-index: 4; display: grid; }
.panel-label-cell { display: flex; align-items: center; justify-content: center; }
.panel-label-badge { font-family: var(--mono); font-size: .68rem; font-weight: 500; letter-spacing: .06em; text-transform: uppercase; color: #fff; background: rgba(0,0,0,.58); border: 1px solid rgba(255,200,80,.5); border-radius: 5px; padding: 4px 10px; }

/* Compare slider */
.compare-container { position: absolute; inset: 0; cursor: ew-resize; user-select: none; }
.compare-quilt, .compare-photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; pointer-events: none; image-rendering: pixelated; }
.compare-photo { clip-path: inset(0 50% 0 0); z-index: 1; }
.compare-handle { position: absolute; top: 0; left: 50%; transform: translateX(-50%); height: 100%; width: 44px; z-index: 2; display: flex; align-items: center; justify-content: center; cursor: ew-resize; }
.compare-handle-line { position: absolute; top: 0; bottom: 0; left: 50%; transform: translateX(-50%); width: 2px; background: #fff; box-shadow: 0 0 6px rgba(0,0,0,.5); }
.compare-handle-knob { width: 34px; height: 34px; border-radius: 50%; background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,.35); position: relative; z-index: 1; }
.compare-label-l, .compare-label-r { position: absolute; bottom: 10px; font-family: var(--mono); font-size: .58rem; letter-spacing: .1em; text-transform: uppercase; color: rgba(255,255,255,.9); background: rgba(0,0,0,.45); padding: 2px 7px; border-radius: 3px; z-index: 3; pointer-events: none; }
.compare-label-l { left: 10px; }
.compare-label-r { right: 10px; }

.preview-loading-overlay {
  display: none;
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, var(--paper) 75%, transparent);
  align-items: center;
  justify-content: center;
  z-index: 2;
}
.preview-loading-overlay.active { display: flex; }
.spinner-lg {
  width: 28px; height: 28px;
  border: 3px solid var(--accent);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.palette-toolbar { display: flex; justify-content: space-between; align-items: flex-end; gap: 18px; margin-bottom: 10px; }
.palette-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.swatch {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  border: 1px solid rgba(0,0,0,.12);
  position: relative;
  transition: transform .15s, box-shadow .15s;
}
.swatch:hover { transform: translateY(-2px) scale(1.06); z-index: 2; }
.swatch.locked { box-shadow: 0 0 0 3px var(--accent); }
.swatch.locked::after { content: '✓'; position: absolute; right: -5px; top: -7px; background: var(--ink); color: var(--paper); border-radius: 999px; width: 18px; height: 18px; font-size: 11px; display: grid; place-items: center; }
.swatch-tooltip, .lock-mark {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: .58rem;
  padding: 5px 8px;
  border-radius: 8px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity .15s;
}
.swatch-tooltip { bottom: calc(100% + 7px); }
.lock-mark { top: calc(100% + 7px); }
.swatch:hover .swatch-tooltip, .swatch:hover .lock-mark { opacity: 1; }

.color-details { background: var(--surface); border: 1px solid var(--warm); border-radius: 20px; padding: 14px; margin-bottom: 18px; }
.color-details summary { font-family: var(--mono); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); cursor: pointer; }
.kona-legend { font-size: .65rem; color: var(--muted); cursor: help; margin-left: 2px; }
.kona-note { margin-top: 10px; }

/* Sign-in modal */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0,0,0,.45);
  display: grid; place-items: center;
  backdrop-filter: blur(4px);
  animation: fade-in .15s ease;
}
.modal-backdrop[hidden] { display: none; }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
.modal-box {
  background: var(--paper);
  border: 1.5px solid var(--rule);
  border-radius: 28px;
  padding: 36px 40px;
  max-width: 400px;
  width: calc(100% - 40px);
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
  animation: slide-up .18s ease;
}
@keyframes slide-up { from { transform: translateY(12px); opacity: 0; } to { transform: none; opacity: 1; } }
.modal-box h2 { font-family: var(--serif); font-size: 1.6rem; font-weight: 400; margin-bottom: 10px; }
.modal-box p { font-size: .88rem; color: var(--muted); line-height: 1.55; margin-bottom: 24px; }
.modal-actions { display: flex; gap: 10px; align-items: center; }
.color-table { width: 100%; border-collapse: collapse; font-size: .75rem; margin-top: 12px; }
.color-table th { font-family: var(--mono); font-size: .58rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--warm); font-weight: 400; }
.color-table td { padding: 8px 10px; border-bottom: 1px solid var(--warm); vertical-align: middle; }
.sw-inline { display: inline-block; width: 16px; height: 16px; border-radius: 5px; border: 1px solid rgba(0,0,0,.12); vertical-align: middle; margin-right: 6px; }
.mono { font-family: var(--mono); }

.download-row { display: flex; gap: 12px; flex-wrap: wrap; }
.dl-btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 18px; border: 1.5px solid var(--ink); border-radius: 999px; font-family: var(--mono); font-size: .72rem; letter-spacing: .05em; text-transform: uppercase; background: transparent; color: var(--ink); text-decoration: none; transition: all .15s; }
.dl-btn:hover { background: var(--ink); color: var(--paper); }
.dl-btn.primary { background: var(--accent); border-color: var(--accent); color: white; }
.dl-btn.primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); }

@media (max-width: 1100px) {
  .studio-layout { grid-template-columns: 1fr; }
  .tool-rail { display: none; }
  .studio-sidebar { max-height: none; border-right: none; border-bottom: 1px solid var(--rule); }
  .studio-main { max-height: none; }
  .confidence-row { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
  .site-nav { height: auto; padding: 10px 16px; flex-wrap: wrap; gap: 8px; }
  .nav-tabs { order: 3; width: 100%; }
  .nav-tab { height: 36px; padding: 0 10px; font-size: 0.62rem; }
  .nav-actions { margin-left: auto; }
  .studio-sidebar, .studio-main { padding: 14px; }
  .preset-grid, .advanced-grid, .confidence-row { grid-template-columns: 1fr; }
}

/* ─── Projects page ─────────────────────────────────────────────────────────── */

.projects-page {
  max-width: 860px;
  margin: 0 auto;
  padding: 36px 28px;
}

.project-list { display: flex; flex-direction: column; gap: 14px; }

.project-card {
  background: var(--surface);
  border: 1px solid var(--warm);
  border-radius: 18px;
  overflow: hidden;
  display: flex;
  align-items: stretch;
  gap: 0;
  box-shadow: var(--shadow);
}
.project-thumb-link { display: block; flex-shrink: 0; width: 110px; background: var(--warm); }
.project-thumb { width: 110px; height: 100%; object-fit: cover; display: block; }
.project-thumb-placeholder {
  width: 110px; height: 100%; min-height: 80px;
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; color: var(--muted); background: var(--surface);
}
.project-info {
  flex: 1;
  padding: 18px 20px;
  border-left: 3px solid var(--accent);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.project-card h2 { font-family: var(--serif); font-size: 1.2rem; font-weight: 400; margin: 0 0 4px; }
.project-title-editable {
  cursor: text;
  border-radius: 4px;
  outline: none;
  padding: 1px 4px;
  margin-left: -4px;
  transition: background .12s;
}
.project-title-editable:hover { background: var(--surface); }
.project-title-editable:focus { background: var(--surface); box-shadow: 0 0 0 2px var(--accent); }
.project-meta { font-family: var(--mono); font-size: .68rem; color: var(--muted); letter-spacing: .04em; line-height: 1.6; }
.project-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.dl-btn.danger { border-color: var(--rule); color: var(--muted); }
.dl-btn.danger:hover { border-color: #c44e2c; color: #c44e2c; background: none; }

.projects-empty {
  text-align: center;
  padding: 80px 40px;
  color: var(--muted);
}
.projects-empty p { font-size: .9rem; margin: 10px 0 24px; }
.project-public-row { display: flex; align-items: center; gap: 8px; margin-top: 10px; }
.public-toggle-label { font-family: var(--mono); font-size: .65rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.toggle-sm { transform: scale(0.85); transform-origin: left center; }

/* Gallery page */
.gallery-page { max-width: 1200px; margin: 0 auto; padding: 40px 24px; }
.gallery-header { text-align: center; margin-bottom: 40px; }
.gallery-title { font-family: var(--serif); font-size: 2.2rem; font-weight: 400; margin: 0 0 8px; }
.gallery-subtitle { font-family: var(--mono); font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin: 0; }
.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 20px; }
.gallery-card { display: flex; flex-direction: column; border: 1px solid var(--warm); border-radius: 16px; overflow: hidden; background: var(--surface); text-decoration: none; color: inherit; transition: transform .15s, box-shadow .15s; }
.gallery-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,.18); }
.gallery-thumb-wrap { aspect-ratio: 3/4; overflow: hidden; background: var(--surface-soft); }
.gallery-thumb { width: 100%; height: 100%; object-fit: cover; display: block; }
.gallery-thumb-placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; font-size: 2rem; color: var(--muted); background: var(--surface-soft); }
.gallery-card-info { padding: 12px 14px 14px; }
.gallery-card-title { font-family: var(--serif); font-size: 1rem; font-weight: 400; margin: 0 0 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.gallery-card-meta { font-family: var(--mono); font-size: .6rem; letter-spacing: .06em; color: var(--muted); margin: 0 0 3px; }
.gallery-card-stats { font-family: var(--mono); font-size: .6rem; letter-spacing: .04em; color: var(--muted); margin: 0; }

/* Pattern view page */
.pattern-view-page { max-width: 1100px; margin: 0 auto; padding: 36px 24px 60px; }
.pattern-view-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; margin-bottom: 32px; flex-wrap: wrap; }
.pattern-view-title { font-family: var(--serif); font-size: 2rem; font-weight: 400; margin: 6px 0 8px; }
.pattern-view-byline { font-family: var(--mono); font-size: .72rem; letter-spacing: .06em; color: var(--muted); margin: 0; }
.pattern-view-actions { display: flex; gap: 10px; flex-wrap: wrap; padding-top: 4px; }
.pattern-view-layout { display: grid; grid-template-columns: 1fr 300px; gap: 32px; align-items: start; }
.pattern-view-img { width: 100%; display: block; border-radius: 16px; border: 1px solid var(--warm); }
.pattern-stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.pattern-stat { background: var(--surface); border: 1px solid var(--warm); border-radius: 12px; padding: 12px 14px; }
.pattern-stat span { display: block; font-family: var(--serif); font-size: 1.1rem; margin-bottom: 2px; }
.pattern-stat label { font-family: var(--mono); font-size: .6rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.pattern-palette-row { flex-wrap: wrap; gap: 6px; margin-bottom: 0; }
.swatch.no-click { cursor: default; pointer-events: none; }
.pattern-view-cta { margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--warm); text-align: center; }
.pattern-view-cta p { font-family: var(--mono); font-size: .72rem; letter-spacing: .06em; color: var(--muted); margin: 0 0 12px; text-transform: uppercase; }
.share-copy-btn { cursor: pointer; }

@media (max-width: 760px) {
  .pattern-view-layout { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px; }
}

@media (max-width: 680px) {
  .projects-page { padding: 20px 14px; }
  .project-card { flex-direction: column; }
  .project-thumb-link { width: 100%; height: 140px; }
  .project-thumb { width: 100%; height: 140px; object-fit: cover; }
}