/* styles.css */

/* ===========================
   Base & Theme Variables
   =========================== */
:root {
  --bg-color: #f9fafb;
  --card-bg: #ffffff;
  --border-subtle: #e5e7eb;
  --text-color: #111827;
  --muted-text: #6b7280;
  --accent: #6366f1;
  --accent-soft: rgba(99, 102, 241, 0.08);
  --shadow-soft: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius-card: 16px;
  --radius-pill: 999px;
  --transition-fast: 180ms ease;
  --preview-bg: #f3f4f6;

  /* Generated variables (updated by JS) */
  --gen-color-1: #111827;
  --gen-color-2: #4b5563;
  --gen-color-3: #9ca3af;
  --gen-color-4: #e5e7eb;
  --gen-color-5: #f9fafb;
  --gen-color-6: #f9fafb;

  --gen-font-heading: "Inter";
  --gen-font-body: "Source Sans 3";
  --gen-button-text: #ffffff;
}

html.theme-dark {
  --bg-color: #1e1e1e;
  --card-bg: #020617;
  --border-subtle: #374151;
  --text-color: #f9fafb;
  --muted-text: #9ca3af;
  --shadow-soft: 0 16px 40px rgba(0, 0, 0, 0.7);
  --preview-bg: #020617;
}

/* Global resets */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Source Sans 3", system-ui, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  -webkit-font-smoothing: antialiased;
}

button {
  font: inherit;
}

/* Focus styles (keyboard visible) */
:focus-visible {
  outline: 3px solid rgba(99, 102, 241, 0.6);
  outline-offset: 2px;
  border-radius: 10px;
}

/* ===========================
   App Layout
   =========================== */

.app-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.5rem 1rem 2.5rem;
  color: var(--text-color);
}

header.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  gap: 1rem;
}

.app-title h1 {
  margin: 0;
  font-family: "Inter", sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-color);
}

.app-title p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted-text);
}

.app-main {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* ===========================
   Cards
   =========================== */

.card {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-soft);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.75rem;
  color: var(--text-color);
}

.card-header h2 {
  margin: 0;
  font-family: "Inter", sans-serif;
  font-size: 1rem;
  letter-spacing: 0.03em;
  color: var(--muted-text);
  text-transform: uppercase;
}

/* ===========================
   Controls
   =========================== */

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

.controls-top {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
}

.controls-left {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.controls-right span {
  color: var(--muted-text);
}

.kbd {
  border: 1px solid var(--border-subtle);
  padding: 0.1rem 0.45rem;
  background: rgba(148, 163, 184, 0.08);
  border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  font-size: 0.78rem;
}

/* Buttons */
.btn {
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color var(--transition-fast),
    transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #4f46e5);
  color: white;
  box-shadow: 0 10px 20px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
  transform: translateY(-1px);
}

.btn-ghost {
  border: 1px solid var(--border-subtle);
  background: rgba(148, 163, 184, 0.06);
  color: var(--text-color);
}

.btn-ghost:hover {
  background: rgba(148, 163, 184, 0.12);
}

.btn-danger {
  border-color: rgba(220, 38, 38, 0.35);
}
.btn-danger:hover {
  background: rgba(220, 38, 38, 0.08);
}

/* ---- Integrated control grid (matches existing look) ---- */
.controls-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  border-top: 1px dashed rgba(148, 163, 184, 0.4);
  padding-top: 0.9rem;
}

@media (max-width: 900px) {
  .controls-grid {
    grid-template-columns: 1fr;
  }
}

.control-pill {
  border: 1px solid var(--border-subtle);
  background: rgba(148, 163, 184, 0.06);
  border-radius: 14px;
  padding: 0.75rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.control-pill__label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted-text);
  font-family: "Inter", sans-serif;
}

.control-pill__content {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.helper-text {
  font-size: 0.8rem;
  color: var(--muted-text);
}

.range-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

#saturationRange {
  flex: 1;
}

.range-value {
  font-size: 0.85rem;
  color: var(--muted-text);
}

/* Color pill */
.color-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--border-subtle);
  background: rgba(148, 163, 184, 0.06);
  border-radius: 999px;
  padding: 0.35rem 0.55rem;
  width: fit-content;
  cursor: pointer;
}

.color-chip {
  width: 16px;
  height: 16px;
  border-radius: 6px;
  border: 1px solid rgba(0, 0, 0, 0.18);
  background: rgba(148, 163, 184, 0.4);
}

.color-hex {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  font-size: 0.85rem;
  color: var(--text-color);
}

.color-pill input[type="color"] {
  width: 1px;
  height: 1px;
  opacity: 0;
  position: absolute;
  pointer-events: none;
}

/* Segmented control */
.segmented {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.seg-btn {
  border: 1px solid var(--border-subtle);
  background: rgba(148, 163, 184, 0.06);
  color: var(--text-color);
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  cursor: pointer;
  transition: transform var(--transition-fast),
    background-color var(--transition-fast), border-color var(--transition-fast);
  font-size: 0.88rem;
}

.seg-btn:hover {
  transform: translateY(-1px);
}

.seg-btn.is-active {
  background: var(--accent-soft);
  border-color: rgba(99, 102, 241, 0.45);
  color: var(--accent);
}

/* Mini toggle */
.mini-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted-text);
  font-size: 0.9rem;
}

.mini-toggle input {
  accent-color: var(--accent);
}

/* ===========================
   Theme Toggle
   =========================== */

.theme-toggle {
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-subtle);
  background: rgba(148, 163, 184, 0.08);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  color: var(--text-color);
}

.theme-toggle__thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: white;
  display: flex;
  justify-content: center;
  align-items: center;
}

html.theme-dark .theme-toggle__thumb {
  background: #020617;
}

/* ===========================
   Main Layout Grid
   =========================== */

.layout-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
}

@media (min-width: 880px) {
  .layout-grid {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1.2fr);
    grid-auto-rows: minmax(0, auto);
  }

  #favoritesCard {
    grid-row: span 2;
  }
}

/* ===========================
   Palette Swatches (larger)
   =========================== */

.palette-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.swatch {
  flex: 1 1 150px;
  min-height: 140px;
  padding: 0.9rem 1rem;
  border-radius: 14px;
  border: 1px solid var(--border-subtle);
  background: radial-gradient(
    circle at top left,
    rgba(255, 255, 255, 0.45),
    rgba(148, 163, 184, 0.04)
  );
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.6rem;
  transition: transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.swatch:hover {
  transform: translateY(-2px);
}

.swatch-color {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.12);
}

.swatch-hex {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  font-size: 0.9rem;
}

.swatch-contrast {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.contrast-badge {
  border-radius: 999px;
  padding: 0.18rem 0.55rem;
  font-size: 0.78rem;
  border: 1px solid transparent;
}

/* Keep readable in both themes */
.contrast-pass {
  background: rgba(22, 163, 74, 0.12);
  border-color: rgba(22, 163, 74, 0.45);
  color: var(--text-color);
}

.contrast-fail {
  background: rgba(220, 38, 38, 0.12);
  border-color: rgba(220, 38, 38, 0.45);
  color: var(--text-color);
}

/* ===========================
   Fonts & Preview
   =========================== */

.font-pair-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.font-pill {
  background: var(--accent-soft);
  color: var(--accent);
  padding: 0.15rem 0.55rem;
  border-radius: 50px;
  border: 1px solid rgba(99, 102, 241, 0.4);
  font-size: 0.8rem;
}

.preview-box {
  background: var(--preview-bg);
  border-radius: 16px;
  padding: 1rem;
  border: 1px dashed rgba(148, 163, 184, 0.5);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

/* top pill nav */
.preview-top-bar {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 0.25rem;
  flex-wrap: wrap;
}

.preview-pill {
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  background: var(--gen-color-4);
  color: var(--gen-color-1);
}

.pill-muted {
  background: rgba(148, 163, 184, 0.3);
  color: var(--gen-color-2);
}

.pill-outline {
  background: transparent;
  border: 1px solid var(--gen-color-3);
  color: var(--gen-color-2);
}

.preview-heading {
  font-family: var(--gen-font-heading);
  font-size: 1.35rem;
  margin: 0;
  color: var(--gen-color-1);
}

.preview-subheading {
  font-family: var(--gen-font-heading);
  font-size: 1rem;
  margin: 0;
  color: var(--gen-color-2);
}

.preview-body {
  font-family: var(--gen-font-body);
  color: var(--gen-color-2);
  margin: 0 0 0.2rem;
}

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

.preview-button {
  background: var(--gen-color-1);
  color: var(--gen-button-text);
  padding: 0.48rem 0.95rem;
  border: none;
  border-radius: 999px;
  font-family: var(--gen-font-heading);
  cursor: pointer;
}

.preview-button-secondary {
  background: transparent;
  color: var(--gen-color-1);
  border-radius: 999px;
  padding: 0.46rem 0.9rem;
  border: 1px solid var(--gen-color-3);
  font-family: var(--gen-font-heading);
  cursor: pointer;
}

.preview-button-tertiary {
  background: rgba(148, 163, 184, 0.18);
  color: var(--gen-color-1);
  border-radius: 999px;
  padding: 0.46rem 0.9rem;
  border: 1px solid rgba(148, 163, 184, 0.25);
  font-family: var(--gen-font-heading);
  cursor: pointer;
}

/* UI demo grid */
.preview-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-top: 0.3rem;
}

@media (min-width: 620px) {
  .preview-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.demo-card {
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.75rem 0.85rem;
}

.demo-card__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.45rem;
}

.demo-meta {
  font-size: 0.8rem;
  color: var(--gen-color-2);
  font-family: var(--gen-font-body);
}

.demo-card__title {
  font-family: var(--gen-font-heading);
  color: var(--gen-color-1);
  font-size: 0.98rem;
  margin-bottom: 0.25rem;
}

.demo-card__body {
  font-family: var(--gen-font-body);
  color: var(--gen-color-2);
  font-size: 0.9rem;
  margin-bottom: 0.6rem;
}

.demo-badge {
  font-size: 0.75rem;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--gen-font-heading);
}

.badge-accent {
  background: var(--gen-color-4);
  color: var(--gen-color-1);
}

.badge-warn {
  background: rgba(250, 204, 21, 0.18);
  border-color: rgba(250, 204, 21, 0.35);
  color: var(--gen-color-1);
}

.demo-progress {
  height: 10px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.22);
  overflow: hidden;
}

.demo-progress__bar {
  height: 100%;
  width: 62%;
  border-radius: 999px;
  background: var(--gen-color-1);
}

.demo-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.demo-pill {
  font-size: 0.75rem;
  padding: 0.18rem 0.6rem;
  border-radius: 999px;
  font-family: var(--gen-font-heading);
  border: 1px solid transparent;
}

.pill-1 {
  background: var(--gen-color-2);
  color: #fff;
}

.pill-2 {
  background: var(--gen-color-4);
  color: var(--gen-color-1);
}

.pill-3 {
  background: transparent;
  border-color: var(--gen-color-3);
  color: var(--gen-color-2);
}

.demo-alert-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.35rem;
}

.demo-alert {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  border-radius: 999px;
  padding: 0.35rem 0.6rem;
  border: 1px solid rgba(148, 163, 184, 0.35);
  font-family: var(--gen-font-body);
  color: var(--gen-color-1);
  background: rgba(148, 163, 184, 0.12);
}

.alert-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--gen-color-1);
}

.alert-success .alert-dot {
  background: rgba(34, 197, 94, 0.9);
}
.alert-danger .alert-dot {
  background: rgba(239, 68, 68, 0.9);
}

/* ===========================
   Favorites
   =========================== */

.favorites-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.favorite-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.favorite-apply {
  flex: 1;
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.04);
  display: flex;
  justify-content: space-between;
  cursor: pointer;
  color: var(--text-color);
}

.favorite-dot {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.favorite-delete {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  background: transparent;
  cursor: pointer;
  color: var(--text-color);
}

/* ===========================
   Footer
   =========================== */

.app-footer {
  font-size: 0.78rem;
  color: var(--muted-text);
  margin-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ===========================
   Accessibility helpers
   =========================== */

.visually-hidden {
  border: 0;
  clip: rect(0 0 0 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
}

/* ===========================
   Animations (prefers-reduced-motion)
   =========================== */

.is-shuffling {
  animation: shuffle-pop 200ms ease;
}

@keyframes shuffle-pop {
  from {
    transform: translateY(3px);
    opacity: 0.7;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .is-shuffling {
    animation: none;
  }
  .btn,
  .swatch,
  .seg-btn {
    transition: none;
  }
}

/* ===========================
   Responsive
   =========================== */

@media (max-width: 700px) {
  header.app-header {
    flex-direction: column;
    align-items: stretch;
  }

  .controls-top {
    flex-direction: column;
    align-items: stretch;
  }
}