/* ================================================================
   水墨丹青 · Ink Wash Art — 乐龄宝默认主题
   灵感：中国传统水墨画、宣纸质感、朱砂点缀
   适用场景：老年人审美偏好，温和、雅致、有文化底蕴
   ================================================================ */
:root[data-theme="ink-wash"] {
  /* ── 墨韵五色 ── */
  --ink-light:  rgba(45,35,25,0.06);
  --ink-soft:   rgba(45,35,25,0.12);
  --ink-medium: rgba(45,35,25,0.22);
  --ink-strong: rgba(45,35,25,0.40);
  --ink-deep:   rgba(45,35,25,0.65);
  --ink-full:   #2D2319;

  /* ── 朱砂 ── */
  --vermilion-50:  #FFF5F0;
  --vermilion-100: #FFE8DD;
  --vermilion-200: #FFD0BB;
  --vermilion-300: #E8956A;
  --vermilion-400: #D4603A;
  --vermilion-500: #B8432A;
  --vermilion-600: #9A3522;
  --vermilion-700: #7C2A1B;

  /* ── 古铜金 ── */
  --gold-50:  #FFFBF0;
  --gold-100: #FBF0DA;
  --gold-200: #F0D9A8;
  --gold-300: #D4B06A;
  --gold-400: #C09840;
  --gold-500: #A88530;
  --gold-600: #8B6D22;
  --gold-700: #6E5518;

  /* ── 翡翠 ── */
  --jade-50:  #EFF8F2;
  --jade-100: #D5EDE0;
  --jade-200: #A8D8BC;
  --jade-300: #6BBF90;
  --jade-400: #4A9E72;
  --jade-500: #3D7D5C;

  /* ── 宣纸色系 ── */
  --paper-warm:   #FAF6F0;
  --paper-ivory:  #F7F1E8;
  --paper-aged:   #F0E8DA;
  --paper-dark:   #E5DAC8;

  /* ── Surface ── */
  --bg-primary:    #FAF6F0;
  --bg-secondary:  #F5EFE5;
  --bg-tertiary:   #EDE5D8;
  --surface:       rgba(255,252,246,0.88);
  --surface-glass: rgba(250,246,240,0.72);
  --surface-hover: #F5EFE5;

  /* ── Text ── */
  --text-primary:   #3A2E22;
  --text-secondary: #6B5C4E;
  --text-tertiary:  #9B8B78;
  --text-inverse:   #FAF6F0;
  --text-link:      #9A3522;

  /* ── Accent ── */
  --color-primary:    #B8432A;
  --color-primary-hover: #9A3522;
  --color-secondary:  #A88530;
  --color-success:    #3D7D5C;
  --color-warning:    #D4B06A;
  --color-danger:     #B8432A;
  --color-info:       #6B5C4E;

  /* ── Border & Shadow ── */
  --border-light:  rgba(160,130,90,0.10);
  --border-medium: rgba(160,130,90,0.20);
  --border-strong: rgba(160,130,90,0.32);
  --shadow-sm:  0 1px 4px rgba(80,50,20,0.06);
  --shadow-md:  0 4px 16px rgba(80,50,20,0.08);
  --shadow-lg:  0 12px 36px rgba(80,50,20,0.10);
  --shadow-xl:  0 24px 56px rgba(80,50,20,0.14);
  --shadow-ink: 0 0 40px rgba(184,67,42,0.12), 0 0 80px rgba(168,133,48,0.06);

  /* ── Radius ── */
  --radius-xs:  6px;
  --radius-sm:  10px;
  --radius-md:  14px;
  --radius-lg:  20px;
  --radius-xl:  28px;
  --radius-full: 9999px;

  /* ── Typography ── */
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Serif SC', serif;
  --font-display: 'STKaiti', 'KaiTi', 'Noto Serif SC', serif;
  --font-brush: 'STXingkai', 'XingKai SC', 'STKaiti', 'KaiTi', cursive;
  --font-mono: 'JetBrains Mono', monospace;
  --font-size-base: 15px;
  --font-size-sm: 13px;
  --font-size-lg: 18px;
  --font-size-xl: 22px;
  --font-size-2xl: 28px;

  /* ── Spacing ── */
  --space-xs: 4px; --space-sm: 8px; --space-md: 16px;
  --space-lg: 24px; --space-xl: 32px; --space-2xl: 48px;

  /* ── Motion ── */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 150ms;
  --transition-normal: 250ms;
  --transition-slow: 400ms;
}