/* Bike Geometry Comparison — static page styles. No external fonts or CDNs. */

:root {
  --ink: #1c1917;
  --ink-muted: #57534e;
  --paper: #f3efe6;
  --panel: #fffcf7;
  --rule: #d6cfc3;
  --rule-strong: #b8af9f;
  --accent: #1f4d3a;
  --accent-hover: #16382a;
  --accent-soft: #e6efe9;
  --danger: #8b2e2e;
  --danger-soft: #f8eaea;
  --shadow: 0 1px 2px rgba(28, 25, 23, 0.06), 0 8px 24px rgba(28, 25, 23, 0.06);
  --radius: 12px;
  --font: system-ui, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --sidebar: 24rem;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(ellipse at top, #fffdf8 0%, var(--paper) 55%);
  line-height: 1.45;
  min-height: 100vh;
}

img, svg { max-width: 100%; }

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  background: var(--accent);
  color: #fff;
  padding: 0.4rem 0.7rem;
  border-radius: 6px;
  z-index: 20;
}
.skip-link:focus { top: 0.75rem; }

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem 1.5rem;
  padding: 1.25rem 1.5rem 1rem;
  border-bottom: 1px solid var(--rule);
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-text h1 {
  margin: 0 0 0.25rem;
  font-size: clamp(1.35rem, 2.4vw, 1.85rem);
  letter-spacing: -0.02em;
  font-weight: 700;
}

.header-text p {
  margin: 0;
  max-width: 42rem;
  color: var(--ink-muted);
  font-size: 0.95rem;
}
.header-text p.credit { margin-top: 0.15rem; }

.header-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.btn {
  appearance: none;
  border: 1px solid var(--rule-strong);
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-weight: 600;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  cursor: pointer;
  min-height: 2.5rem;
}
.btn:hover { background: #fff; border-color: var(--ink-muted); }
.btn:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 45%, white); outline-offset: 2px; }
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-quiet { font-weight: 500; color: var(--ink-muted); }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; }

.status {
  width: 100%;
  margin: 0;
  font-size: 0.9rem;
  color: var(--accent);
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--sidebar);
  gap: 1.25rem;
  padding: 1.25rem 1.5rem 2rem;
  align-items: start;
}

.preview-panel { min-width: 0; }

.preview-frame {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: auto;
}

.svg-host {
  padding: 0.5rem;
  min-height: 16rem;
}
.svg-host svg {
  display: block;
  width: 100%;
  height: auto;
  zoom: 1 !important;
  background: #fff;
  border-radius: 8px;
}

.drawing-notes {
  margin: 0.85rem 0.25rem 0;
  color: var(--ink-muted);
  font-size: 0.9rem;
}
.drawing-notes h2 {
  margin: 0 0 0.25rem;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink, inherit);
}
.drawing-notes ul { margin: 0; padding-left: 1.2rem; }

.banner {
  margin: 0.75rem 0 0;
  padding: 0.7rem 0.9rem;
  border-radius: 8px;
  font-size: 0.95rem;
}
.banner-error {
  background: var(--danger-soft);
  color: var(--danger);
  border: 1px solid color-mix(in srgb, var(--danger) 25%, white);
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.slot {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 0.9rem 1rem 1rem;
}

.slot-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.7rem;
}

.slot-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  margin: 0;
  font-size: 1rem;
}

.color-input {
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  background: #fff;
  cursor: pointer;
  overflow: hidden;
}
.color-input::-webkit-color-swatch-wrapper { padding: 0; }
.color-input::-webkit-color-swatch { border: none; border-radius: 999px; }

.slot label,
.settings-grid label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-muted);
  margin: 0 0 0.65rem;
}
.slot label span,
.settings-grid label span { color: var(--ink-muted); }
.slot label em,
.settings-grid label em {
  font-style: normal;
  font-weight: 500;
  color: #8a8378;
}

select, input[type="text"], input[type="number"] {
  font: inherit;
  font-weight: 500;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--rule-strong);
  border-radius: 8px;
  padding: 0.45rem 0.6rem;
  min-height: 2.4rem;
  width: 100%;
}
select:focus, input:focus {
  outline: 3px solid color-mix(in srgb, var(--accent) 35%, white);
  outline-offset: 1px;
  border-color: var(--accent);
}

.align-panel {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 0.9rem 1rem 1rem;
}
.align-panel label span {
  display: block;
  margin-bottom: 0.3rem;
  font-weight: 600;
}
.align-panel label em {
  font-style: normal;
  font-weight: 500;
  color: #8a8378;
}

.custom-form {
  margin-top: 0.4rem;
  padding-top: 0.7rem;
  border-top: 1px dashed var(--rule);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.15rem 0.6rem;
}
.custom-form .full { grid-column: 1 / -1; }

.field-error {
  color: var(--danger);
  font-size: 0.75rem;
  font-weight: 600;
  min-height: 0.9rem;
}

.settings-panel {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 0.4rem 1rem 0.8rem;
}
.settings-panel summary {
  cursor: pointer;
  font-weight: 700;
  padding: 0.55rem 0;
}
.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.15rem 0.6rem;
}

.site-footer {
  padding: 0 1.5rem 2rem;
  color: var(--ink-muted);
  font-size: 0.9rem;
}
.site-footer code {
  font-family: var(--mono);
  font-size: 0.85em;
  background: var(--accent-soft);
  padding: 0.1em 0.35em;
  border-radius: 4px;
}
.site-footer a { color: var(--accent); }

@media (max-width: 960px) {
  .site-header { position: static; }
  .layout {
    grid-template-columns: 1fr;
    padding: 1rem;
  }
  :root { --sidebar: auto; }
}

@media (max-width: 560px) {
  .custom-form, .settings-grid { grid-template-columns: 1fr; }
  .header-actions { width: 100%; }
  .btn { flex: 1 1 auto; }
}

.source-meta {
  margin: 0.35rem 0 0.15rem;
  font-size: 0.8rem;
  color: var(--ink-muted);
  line-height: 1.35;
}
.source-meta a { color: var(--accent); }

.btn-small {
  min-height: 2.1rem;
  padding: 0.3rem 0.75rem;
  font-size: 0.85rem;
}
.btn-danger {
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 45%, white);
  background: var(--danger-soft);
}
.btn-danger:hover { background: #f3d6d6; border-color: var(--danger); }

.mine-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.25rem 0 0.65rem;
}

.form-actions {
  margin-top: 0.55rem;
  padding-top: 0.65rem;
  border-top: 1px dashed var(--rule);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.45rem;
}

.library-panel {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 0.9rem 1rem 1rem;
}
.library-panel h2 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}
.library-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.55rem;
}

.storage-note {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--ink-muted);
  line-height: 1.4;
}
.storage-note.storage-warning,
.status-error {
  color: var(--danger);
}
#library-status { margin: 0.4rem 0 0; width: auto; }