/* style.css */
/* =========================================================
   UI CHROME DESIGN SYSTEM (neutral; generated output is focus)
   Light: #f9fafb, Dark: #1e1e1e, Accent: indigo #6366f1
   ========================================================= */

/* Hard-stop horizontal scrolling (mobile) */
html, body {
  max-width: 100%;
  overflow-x: hidden;
}

:root {
  --ui-bg: #f9fafb;
  --ui-surface: #ffffff;
  --ui-border: rgba(17, 24, 39, 0.12);
  --ui-text: #111827;
  --ui-muted: #4b5563;
  --ui-muted-2: #6b7280;
  --ui-shadow: 0 10px 30px rgba(17,24,39,0.08);
  --ui-radius: 16px;
  --ui-accent: #6366f1;
  --ui-accent-hover: #4f46e5;
  --ui-accent-ring: rgba(99, 102, 241, 0.35);
  --ui-danger: #ef4444;

  --container: 1120px;

  /* Preview stays neutral background always, but text/chrome adapts */
  --preview-bg: #ffffff;
  --preview-border: rgba(17, 24, 39, 0.10);
  --preview-text: #111827;
  --preview-muted: #374151;
  --preview-btn-bg: rgba(17, 24, 39, 0.06);
  --preview-btn-border: rgba(17, 24, 39, 0.20);

  --dur: 180ms;
  --ease: cubic-bezier(.2,.8,.2,1);
}

html.theme-dark {
  --ui-bg: #1e1e1e;
  --ui-surface: #242424;
  --ui-border: rgba(255, 255, 255, 0.10);
  --ui-text: rgba(255, 255, 255, 0.92);
  --ui-muted: rgba(255, 255, 255, 0.72);
  --ui-muted-2: rgba(255, 255, 255, 0.58);
  --ui-shadow: 0 12px 28px rgba(0,0,0,0.35);

  /* Preview background stays white; adjust foreground subtly */
  --preview-bg: #ffffff;
  --preview-border: rgba(17, 24, 39, 0.10);
  --preview-text: #111827;
  --preview-muted: #4b5563;
  --preview-btn-bg: rgba(17, 24, 39, 0.08);
  --preview-btn-border: rgba(17, 24, 39, 0.22);
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  font-family: "Source Sans 3", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--ui-bg);
  color: var(--ui-text);
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; }
:focus-visible {
  outline: 3px solid var(--ui-accent-ring);
  outline-offset: 3px;
  border-radius: 10px;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: 12px;
  background: var(--ui-surface);
  border: 1px solid var(--ui-border);
  padding: 10px 12px;
  border-radius: 12px;
  box-shadow: var(--ui-shadow);
  transform: translateY(-200%);
  transition: transform var(--dur) var(--ease);
  z-index: 50;
}
.skip-link:focus { transform: translateY(0); }

header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--ui-bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid color-mix(in srgb, var(--ui-border) 70%, transparent);
}

.wrap {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 16px; /* important: prevents viewport overflow */
  padding-block: 18px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.brand { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.brand h1 {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  font-size: 16px;
  letter-spacing: -0.01em;
  font-weight: 700;
}
.brand p {
  margin: 0;
  font-size: 13px;
  color: var(--ui-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--ui-border);
  background: var(--ui-surface);
  padding: 10px 12px;
  border-radius: 999px;
  box-shadow: 0 6px 16px rgba(17,24,39,0.06);
}
.toggle label { font-size: 13px; color: var(--ui-muted); user-select: none; }
.switch {
  position: relative;
  width: 44px;
  height: 26px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--ui-border) 70%, transparent);
  border: 1px solid var(--ui-border);
  cursor: pointer;
}
.switch::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 999px;
  background: var(--ui-surface);
  box-shadow: 0 6px 14px rgba(0,0,0,0.12);
  transform: translateX(0);
  transition: transform var(--dur) var(--ease);
}
html.theme-dark .switch::after { transform: translateX(18px); }

main .wrap { padding-top: 22px; padding-bottom: 28px; }

.grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 18px;
  align-items: start;
}

/* CRITICAL: allow grid/flex children to shrink (prevents horizontal scroll) */
.leftcol,
.card,
.preview,
.controls,
.btnrow,
.presetbar,
.codebox,
pre {
  min-width: 0;
}

@media (max-width: 980px) {
  .grid { grid-template-columns: 1fr; }
}

.leftcol { display: grid; gap: 18px; }

.card {
  background: var(--ui-surface);
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius);
  box-shadow: var(--ui-shadow);
  padding: 16px;
}

.card h2 {
  margin: 0 0 10px 0;
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.card .sub {
  margin: -6px 0 12px 0;
  font-size: 13px;
  color: var(--ui-muted);
}

.controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; }
.btnrow { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.presetbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

button, .btn {
  border: 1px solid var(--ui-border);
  background: var(--ui-surface);
  color: var(--ui-text);
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
  box-shadow: 0 6px 14px rgba(17,24,39,0.06);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  user-select: none;
  max-width: 100%;
}
button:hover { transform: translateY(-1px); border-color: color-mix(in srgb, var(--ui-accent) 35%, var(--ui-border)); }
button:active { transform: translateY(0); }
button.primary {
  background: var(--ui-accent);
  color: white;
  border-color: color-mix(in srgb, var(--ui-accent) 80%, black);
  box-shadow: 0 10px 18px rgba(99,102,241,0.22);
}
button.primary:hover { background: var(--ui-accent-hover); }
button.danger { border-color: color-mix(in srgb, var(--ui-danger) 50%, var(--ui-border)); }

.kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 12px;
  color: color-mix(in srgb, var(--ui-text) 72%, transparent);
  background: color-mix(in srgb, var(--ui-border) 45%, transparent);
  border: 1px solid var(--ui-border);
  padding: 2px 6px;
  border-radius: 8px;
  margin-left: 6px;
}

.chip {
  border-radius: 999px;
  padding: 8px 10px;
  font-size: 13px;
  border: 1px solid var(--ui-border);
  background: color-mix(in srgb, var(--ui-surface) 90%, transparent);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.chip:hover { border-color: color-mix(in srgb, var(--ui-accent) 40%, var(--ui-border)); transform: translateY(-1px); }
.chip[aria-pressed="true"] {
  border-color: color-mix(in srgb, var(--ui-accent) 60%, var(--ui-border));
  box-shadow: 0 10px 18px rgba(99,102,241,0.12);
}

/* Palette */
.swatches { display: flex; flex-wrap: wrap; gap: 10px; }
.swatch {
  flex: 1 1 140px;
  min-width: 140px;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--ui-border);
  background: var(--ui-surface);
}
.swatch button {
  all: unset;
  display: grid;
  grid-template-rows: 70px auto;
  width: 100%;
  cursor: pointer;
}
.swatch button:focus-visible {
  outline: 3px solid var(--ui-accent-ring);
  outline-offset: 3px;
  border-radius: 14px;
}
.swatch-color { width: 100%; height: 70px; }
.swatch-meta { padding: 10px 10px 12px 10px; display: grid; gap: 8px; }
.hexrow { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.hex {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.copyhint { font-size: 12px; color: var(--ui-muted-2); }
.badges { display: flex; flex-wrap: wrap; gap: 6px; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  border-radius: 999px;
  border: 1px solid var(--ui-border);
  font-size: 12px;
  color: var(--ui-muted);
  background: color-mix(in srgb, var(--ui-surface) 90%, transparent);
}
.badge strong {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-weight: 700;
  font-size: 12px;
  color: color-mix(in srgb, var(--ui-text) 85%, transparent);
}
.badge.pass { border-color: color-mix(in srgb, #22c55e 45%, var(--ui-border)); }
.badge.fail { border-color: color-mix(in srgb, #ef4444 45%, var(--ui-border)); }

/* Fonts + preview */
.fontnames { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 12px; }
@media (max-width: 520px) { .fontnames { grid-template-columns: 1fr; } }
.fontpill {
  border: 1px solid var(--ui-border);
  border-radius: 14px;
  padding: 10px 12px;
  background: color-mix(in srgb, var(--ui-surface) 92%, transparent);
  display: grid;
  gap: 6px;
}
.fontpill .label {
  font-size: 12px;
  color: var(--ui-muted-2);
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.fontpill .value { font-size: 14px; font-weight: 700; color: var(--ui-text); word-break: break-word; }

/* Preview: no hard-coded dark colors (fixes dark-mode issue) */
.preview {
  border-radius: var(--ui-radius);
  border: 1px solid var(--preview-border);
  background: var(--preview-bg);
  padding: 18px;
  overflow: hidden;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  min-height: 220px;
}
.preview h1 {
  margin: 0 0 6px 0;
  font-size: clamp(22px, 3vw, 34px);
  letter-spacing: -0.02em;
  color: var(--preview-text);
}
.preview .subhead {
  margin: 0 0 12px 0;
  color: var(--preview-muted);
  font-size: 14px;
  font-weight: 600;
}
.preview p {
  margin: 0 0 14px 0;
  color: var(--preview-text);
  font-size: 15px;
  max-width: 72ch;
}
.preview .samplebtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--preview-btn-border);
  background: var(--preview-btn-bg);
  color: var(--preview-text);
  cursor: pointer;
  transition: transform var(--dur) var(--ease);
}
.preview .samplebtn:hover { transform: translateY(-1px); }
.preview .samplebtn:focus-visible { outline: 3px solid rgba(99,102,241,0.40); outline-offset: 3px; }

.export { display: grid; gap: 10px; }
.exportHead { display:flex; align-items:center; justify-content:space-between; gap:10px; flex-wrap:wrap; }
.exportLabel { font-family: Inter, system-ui; font-size: 13px; }
.exportBtns { display:flex; gap:10px; flex-wrap:wrap; }

.codebox {
  border: 1px solid var(--ui-border);
  border-radius: 14px;
  background: color-mix(in srgb, var(--ui-surface) 88%, transparent);
  padding: 12px;
  overflow: auto;
  max-height: 220px;
}
pre {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.5;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  color: color-mix(in srgb, var(--ui-text) 88%, transparent);
  white-space: pre-wrap;
  word-break: break-all;
}

.favlist { display: grid; gap: 10px; }
.favitem {
  border: 1px solid var(--ui-border);
  border-radius: 14px;
  padding: 10px;
  display: grid;
  gap: 10px;
  background: color-mix(in srgb, var(--ui-surface) 92%, transparent);
}
.favrow { display: flex; gap: 10px; align-items: center; justify-content: space-between; }
.favmeta { display: grid; gap: 2px; min-width: 0; }
.favmeta .title { font-size: 13px; font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.favmeta .desc { font-size: 12px; color: var(--ui-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.favswatches { display: flex; gap: 6px; flex-wrap: wrap; }
.favdot { width: 14px; height: 14px; border-radius: 999px; border: 1px solid rgba(17, 24, 39, 0.18); }
.favEmpty { margin-top: 12px; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  padding: 10px 12px;
  border-radius: 999px;
  background: var(--ui-surface);
  border: 1px solid var(--ui-border);
  box-shadow: var(--ui-shadow);
  font-size: 13px;
  color: var(--ui-text);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  z-index: 60;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(-2px); }

footer {
  border-top: 1px solid color-mix(in srgb, var(--ui-border) 70%, transparent);
  padding: 16px 0 22px;
  color: var(--ui-muted);
  font-size: 13px;
}
.footerWrap { display:flex; flex-wrap:wrap; align-items:baseline; justify-content:space-between; gap:12px; }

/* Animations (respects reduced motion) */
.anim-in { opacity: 0; transform: translateY(6px); }
.anim-in.is-on {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
@media (prefers-reduced-motion: reduce) {
  .anim-in, .anim-in.is-on { opacity: 1; transform: none; transition: none !important; }
  button, .chip, .swatch, .preview, .toast { transition: none !important; }
}

/* =========================================================
   MOBILE RESPONSIVENESS + NO HORIZONTAL SCROLL
   ========================================================= */
@media (max-width: 640px) {
  .wrap { padding-inline: 14px; }
  .card { padding: 14px; }

  .preview { padding: 14px; }
  .preview h1 { font-size: clamp(20px, 6vw, 26px); line-height: 1.15; }
  .preview .subhead { font-size: 13px; }
  .preview p { font-size: 14px; max-width: 100%; }
  .preview .samplebtn { width: 100%; justify-content: center; }

  /* Swatches MUST not force width on mobile */
  .swatch { min-width: 0; flex: 1 1 100%; }

  /* Buttons/chips wrap cleanly */
  .btnrow, .presetbar { width: 100%; }
  button, .chip { max-width: 100%; }

  /* Allow brand subtitle to wrap on mobile */
  .brand p {
    white-space: normal;
    overflow: visible;
  }
}

@media (max-width: 360px) {
  .preview { padding: 12px; }
  .preview h1 { font-size: 20px; }
  .btnrow, .presetbar { width: 100%; }
  .btnrow button, .presetbar .chip { width: 100%; justify-content: center; }
}