/* 云息 UI Design Tokens v1.0
 * 面向官网、顾问管理后台、家长/孩子移动端。
 * 直接引入本文件后使用 --yx-* 变量；页面根节点可设置 data-ui-surface。
 */

:root {
  color-scheme: light;

  /* Brand primitives */
  --yx-cloud-50: #f4f9fd;
  --yx-cloud-100: #e8f2f9;
  --yx-cloud-200: #d2e7f5;
  --yx-cloud-300: #b8d8ef;
  --yx-cloud-400: #8fbce6;
  --yx-cloud-500: #6d9fca;
  --yx-cloud-600: #4e84ad;
  --yx-cloud-700: #376f96;
  --yx-cloud-800: #315f7e;
  --yx-cloud-900: #2d5068;

  --yx-peach-50: #fff7f1;
  --yx-peach-100: #fdebe0;
  --yx-peach-200: #f7d4bf;
  --yx-peach-300: #efbb9b;
  --yx-peach-400: #e7a47d;
  --yx-peach-500: #d8865a;
  --yx-peach-600: #bd693f;
  --yx-peach-700: #a4552f;
  --yx-peach-800: #824426;
  --yx-peach-900: #663820;

  --yx-slate-50: #f6f8f9;
  --yx-slate-100: #edf1f3;
  --yx-slate-200: #dce4e8;
  --yx-slate-300: #c4d0d6;
  --yx-slate-400: #94a5ae;
  --yx-slate-500: #708394;
  --yx-slate-600: #607582;
  --yx-slate-700: #4e6274;
  --yx-slate-800: #405568;
  --yx-slate-900: #293b49;

  /* Semantic colors */
  --yx-color-bg: #f6f9fb;
  --yx-color-bg-warm: #fbf8f4;
  --yx-color-surface: #ffffff;
  --yx-color-surface-soft: var(--yx-cloud-50);
  --yx-color-surface-warm: var(--yx-peach-50);
  --yx-color-surface-raised: #ffffff;
  --yx-color-text: var(--yx-slate-900);
  --yx-color-text-soft: var(--yx-slate-700);
  --yx-color-text-muted: var(--yx-slate-600);
  --yx-color-text-disabled: var(--yx-slate-400);
  --yx-color-border: var(--yx-slate-200);
  --yx-color-border-strong: var(--yx-slate-300);
  --yx-color-primary: var(--yx-cloud-700);
  --yx-color-primary-hover: var(--yx-cloud-800);
  --yx-color-primary-active: var(--yx-cloud-900);
  --yx-color-primary-soft: var(--yx-cloud-100);
  --yx-color-primary-on: #ffffff;
  --yx-color-accent: var(--yx-peach-700);
  --yx-color-accent-soft: var(--yx-peach-100);
  --yx-color-accent-on: #ffffff;
  --yx-color-focus: #176fa3;

  --yx-color-success: #2f7b61;
  --yx-color-success-soft: #e7f4ee;
  --yx-color-warning: #9a641d;
  --yx-color-warning-soft: #fff3d8;
  --yx-color-danger: #b34a58;
  --yx-color-danger-soft: #fdecef;
  --yx-color-info: #376f96;
  --yx-color-info-soft: #e8f2f9;

  /* Typography */
  --yx-font-display: "Hiragino Maru Gothic ProN", "Yuanti SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --yx-font-body: "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", system-ui, sans-serif;
  --yx-font-data: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --yx-font-size-12: 0.75rem;
  --yx-font-size-14: 0.875rem;
  --yx-font-size-16: 1rem;
  --yx-font-size-18: 1.125rem;
  --yx-font-size-20: 1.25rem;
  --yx-font-size-24: 1.5rem;
  --yx-font-size-30: 1.875rem;
  --yx-font-size-38: 2.375rem;
  --yx-font-size-48: 3rem;
  --yx-font-size-60: 3.75rem;
  --yx-line-tight: 1.2;
  --yx-line-title: 1.35;
  --yx-line-body: 1.7;
  --yx-line-ui: 1.5;
  --yx-weight-regular: 400;
  --yx-weight-medium: 500;
  --yx-weight-semibold: 600;
  --yx-weight-bold: 700;
  --yx-tracking-tight: -0.02em;
  --yx-tracking-normal: 0;
  --yx-tracking-open: 0.08em;

  /* Spacing: 4px base */
  --yx-space-0: 0;
  --yx-space-1: 0.25rem;
  --yx-space-2: 0.5rem;
  --yx-space-3: 0.75rem;
  --yx-space-4: 1rem;
  --yx-space-5: 1.25rem;
  --yx-space-6: 1.5rem;
  --yx-space-8: 2rem;
  --yx-space-10: 2.5rem;
  --yx-space-12: 3rem;
  --yx-space-16: 4rem;
  --yx-space-20: 5rem;
  --yx-space-24: 6rem;

  /* Shape */
  --yx-radius-4: 0.25rem;
  --yx-radius-8: 0.5rem;
  --yx-radius-12: 0.75rem;
  --yx-radius-16: 1rem;
  --yx-radius-20: 1.25rem;
  --yx-radius-28: 1.75rem;
  --yx-radius-pill: 999px;
  --yx-radius-card: var(--yx-radius-20);
  --yx-radius-control: var(--yx-radius-12);

  /* Elevation */
  --yx-shadow-1: 0 1px 2px rgba(41, 59, 73, 0.06), 0 4px 12px rgba(41, 59, 73, 0.04);
  --yx-shadow-2: 0 8px 24px rgba(55, 111, 150, 0.10), 0 2px 8px rgba(41, 59, 73, 0.05);
  --yx-shadow-3: 0 18px 48px rgba(55, 111, 150, 0.14), 0 4px 14px rgba(41, 59, 73, 0.06);
  --yx-shadow-focus: 0 0 0 3px rgba(23, 111, 163, 0.24);

  /* Motion */
  --yx-duration-fast: 120ms;
  --yx-duration-base: 180ms;
  --yx-duration-slow: 280ms;
  --yx-ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --yx-ease-enter: cubic-bezier(0, 0, 0.2, 1);
  --yx-ease-exit: cubic-bezier(0.4, 0, 1, 1);

  /* Layout */
  --yx-container-site: 1180px;
  --yx-container-content: 760px;
  --yx-container-admin: 1440px;
  --yx-sidebar-width: 248px;
  --yx-header-height: 68px;
  --yx-mobile-gutter: 16px;
  --yx-table-row-height: 52px;
  --yx-control-height: 44px;
  --yx-control-height-lg: 48px;
  --yx-touch-target: 48px;

  /* Layering */
  --yx-z-base: 0;
  --yx-z-sticky: 100;
  --yx-z-dropdown: 200;
  --yx-z-overlay: 300;
  --yx-z-modal: 400;
  --yx-z-toast: 500;
}

[data-ui-surface="website"] {
  --yx-page-gutter: clamp(20px, 4vw, 48px);
  --yx-section-gap: clamp(64px, 10vw, 112px);
  --yx-radius-card: var(--yx-radius-28);
  --yx-control-height: 48px;
}

[data-ui-surface="admin"] {
  --yx-color-bg: #f4f7f9;
  --yx-page-gutter: clamp(20px, 2vw, 32px);
  --yx-section-gap: 32px;
  --yx-radius-card: var(--yx-radius-12);
  --yx-radius-control: var(--yx-radius-8);
  --yx-control-height: 40px;
}

[data-ui-surface="mobile"] {
  --yx-page-gutter: var(--yx-mobile-gutter);
  --yx-section-gap: 32px;
  --yx-radius-card: var(--yx-radius-20);
  --yx-control-height: 48px;
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --yx-duration-fast: 1ms;
    --yx-duration-base: 1ms;
    --yx-duration-slow: 1ms;
  }
}