/*
 * A-SOUL Diary design system
 *
 * This file owns global design tokens and low-level UI primitives only.
 * Page composition belongs to css/pages/*.css.
 * Responsive compositions use four documented ranges:
 *   phone <= 699px, tablet 700-1099px, desktop 1100-1439px, wide >= 1440px.
 */

:root {
  color-scheme: light;

  /* Typography */
  --font-sans: "Microsoft YaHei UI", "PingFang SC", "Noto Sans SC", system-ui, sans-serif;
  --font-display: "Microsoft YaHei", var(--font-sans);
  --font-mono: Consolas, "Microsoft YaHei UI", monospace;
  --text-xs: 11px;
  --text-sm: 13px;
  --text-md: 14px;
  --text-lg: 17px;
  --text-xl: 21px;
  --title-sm: clamp(28px, 4vw, 42px);
  --title-md: clamp(30px, 4vw, 49px);
  --leading-compact: 1.2;
  --leading-body: 1.65;

  /* Core neutral palette */
  --color-ink: #302b3d;
  --color-ink-strong: #242335;
  --color-muted: #817986;
  --color-muted-soft: #a7a3b0;
  --color-line: rgba(72, 63, 83, .11);
  --color-hairline: rgba(66, 54, 72, .095);
  --color-canvas: #fffaf4;
  --color-paper: #fffdf9;
  --color-surface: #fffdfb;
  --color-surface-warm: #fff7f3;

  /* A-SOUL member colours */
  --member-diana: #e799b0;
  --member-bella: #db7d74;
  --member-eileen: #576690;
  --member-diana-ink: #a74365;
  --member-bella-ink: #934a44;
  --member-eileen-ink: #435071;
  --member-diana-soft: #fff0f4;
  --member-bella-soft: #fff0ee;
  --member-eileen-soft: #f0f2f8;

  /* Functional accents */
  --accent-coral: var(--member-bella);
  --accent-coral-strong: var(--member-bella-ink);
  --accent-violet: #7380a3;
  --accent-violet-deep: var(--member-eileen);
  --accent-mint: #4ca78c;
  --accent-orange: #ee9d42;
  --accent-gold: #d79b3f;
  --accent-mint-soft: #edf8f4;
  --accent-violet-soft: var(--member-eileen-soft);
  --accent-gold-soft: #fff8e8;
  --color-danger: #cf455b;

  /* Spacing rhythm */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  /* Shape and depth */
  --radius-xs: 8px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 34px;
  --radius-pill: 999px;
  --shadow-soft: 0 12px 35px rgba(80, 54, 78, .07);
  --shadow-card: 0 18px 46px rgba(77, 59, 82, .09);
  --shadow-raised: 0 24px 70px rgba(80, 54, 78, .10);

  /* Controls */
  --control-sm: 36px;
  --control-md: 42px;
  --control-lg: 48px;
  --control-radius: 14px;
  --focus-ring: 0 0 0 4px rgba(231, 153, 176, .16);

  /* Compatibility aliases. New code should use the semantic names above. */
  --ink: var(--color-ink-strong);
  --ink-soft: var(--color-muted);
  --paper: var(--color-paper);
  --paper-warm: var(--color-surface-warm);
  --line: var(--color-line);
  --coral: var(--accent-coral);
  --coral-dark: var(--accent-coral-strong);
  --lavender: var(--accent-violet);
  --mint: #36a58b;
  --orange: var(--accent-orange);
  --shadow: var(--shadow-raised);

  --soul-ink: var(--color-ink);
  --soul-muted: var(--color-muted);
  --soul-line: var(--color-line);
  --soul-hairline: var(--color-hairline);
  --soul-paper: rgba(255, 254, 251, .94);
  --soul-surface: var(--color-surface);
  --soul-ivory: var(--color-canvas);
  --soul-pink: var(--member-diana);
  --soul-pink-soft: var(--member-diana-soft);
  --soul-coral: var(--member-bella);
  --soul-coral-soft: var(--member-bella-soft);
  --soul-nailin: var(--member-eileen);
  --soul-mint: var(--accent-mint);
  --soul-mint-soft: var(--accent-mint-soft);
  --soul-violet: var(--accent-violet-deep);
  --soul-violet-soft: var(--accent-violet-soft);
  --soul-gold: var(--accent-gold);
  --soul-gold-soft: var(--accent-gold-soft);
  --soul-shadow: var(--shadow-card);
  --soul-purple: #667394;

  --soul-jiaran: var(--member-diana);
  --soul-bella: var(--member-bella);
  --jiaran-pink: var(--member-diana);
  --bella-red: var(--member-bella);
  --nailin-blue: var(--member-eileen);
  --neutral-soft: #f0edef;

  font-family: var(--font-sans);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: #fbf8f3;
  font-family: var(--font-sans);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  z-index: -2;
  inset: 0;
  background-image: radial-gradient(rgba(36, 35, 53, .13) .5px, transparent .5px);
  background-size: 13px 13px;
  content: "";
  opacity: .18;
  pointer-events: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
label[for] {
  -webkit-tap-highlight-color: transparent;
}

button {
  color: inherit;
}

:where(button, a, input, select, textarea):focus-visible {
  outline: 3px solid rgba(87, 102, 144, .22);
  outline-offset: 3px;
}

:where(button, input, select, textarea):disabled {
  cursor: not-allowed;
  opacity: .55;
}

::selection {
  color: var(--color-ink);
  background: rgba(231, 153, 176, .30);
}

.eyebrow {
  display: block;
  margin-bottom: var(--space-3);
  color: var(--member-diana-ink);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .18em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  text-wrap: balance;
}

h1 {
  margin-bottom: 17px;
  font-size: var(--title-md);
  line-height: var(--leading-compact);
  letter-spacing: -.04em;
}

.field {
  display: grid;
  gap: var(--space-2);
}

.field--wide {
  grid-column: 1 / -1;
}

.field > span,
.color-picker legend {
  color: var(--color-muted);
  font-size: var(--text-sm);
  font-weight: 700;
}

.field em {
  margin-left: 3px;
  color: var(--color-muted-soft);
  font-size: var(--text-xs);
  font-style: normal;
  font-weight: 500;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--color-line);
  border-radius: 12px;
  outline: none;
  color: var(--color-ink-strong);
  background: rgba(255, 255, 255, .78);
  transition: border-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.field input,
.field select {
  height: 47px;
  padding: 0 14px;
}

.field textarea {
  min-height: 86px;
  padding: 13px 14px;
  resize: vertical;
  line-height: 1.55;
}

.field input::placeholder,
.field textarea::placeholder {
  color: #bbb7c2;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: rgba(231, 153, 176, .72);
  background: #fff;
  box-shadow: var(--focus-ring);
}

.theme-color-field {
  --theme-preview-color: var(--member-eileen);
}

.theme-color-control {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  align-items: center;
  gap: var(--space-2);
}

.theme-color-control > i {
  position: relative;
  display: block;
  width: 38px;
  height: 38px;
  border: 5px solid #fff;
  border-radius: 12px;
  background: var(--theme-preview-color);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--theme-preview-color) 30%, var(--color-line)), 0 4px 12px color-mix(in srgb, var(--theme-preview-color) 16%, transparent);
}

.theme-color-field.is-auto .theme-color-control > i::after {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #fff;
  content: "✦";
  font-size: 13px;
  font-style: normal;
}

.primary-button,
.secondary-button,
.text-button,
.danger-button,
.icon-button,
.chart-action,
.preset-row button,
.sticker-tab,
.sticker-item {
  border: 0;
  cursor: pointer;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  min-height: var(--control-lg);
  padding: 0 var(--space-5);
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border-radius: var(--control-radius);
  font-weight: 800;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.primary-button {
  color: #fff;
  background: var(--member-eileen);
  box-shadow: 0 10px 22px rgba(87, 102, 144, .2);
}

.primary-button:hover,
.secondary-button:hover {
  transform: translateY(-2px);
}

.primary-button:hover {
  background: var(--member-eileen-ink);
  box-shadow: 0 14px 26px rgba(87, 102, 144, .24);
}

.primary-button span,
.secondary-button span {
  font-size: 22px;
  font-weight: 400;
  line-height: 1;
}

.secondary-button {
  color: var(--member-eileen-ink);
  border: 1px solid rgba(87, 102, 144, .16);
  background: var(--member-eileen-soft);
}

.text-button,
.danger-button {
  padding: 9px 11px;
  border-radius: var(--radius-sm);
  background: transparent;
  font-size: 13px;
  font-weight: 700;
}

.text-button:hover {
  background: rgba(36, 35, 53, .06);
}

.danger-button {
  color: var(--color-danger);
}

.danger-button:hover {
  background: rgba(207, 69, 91, .08);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    scroll-behavior: auto;
    transition-duration: .01ms;
    animation-duration: .01ms;
    animation-iteration-count: 1;
  }
}