/* ============================================================
   采购合同数据分析 — Design Tokens
   两套主题: Linear (dark) / Stripe (light)
   切换方式: <html data-theme="linear|stripe">
   ============================================================ */

/* ============ LINEAR THEME (Dark) ============ */
[data-theme="linear"] {
  /* --- Colors --- */
  --color-canvas:          #010102;
  --color-surface-1:       #0f1011;
  --color-surface-2:       #141516;
  --color-surface-3:       #18191a;
  --color-surface-4:       #191a1b;
  --color-primary:         #5e6ad2;
  --color-primary-hover:   #828fff;
  --color-primary-focus:   #5e69d1;
  --color-on-primary:      #ffffff;
  --color-ink:             #f7f8f8;
  --color-ink-muted:       #d0d6e0;
  --color-ink-subtle:      #8a8f98;
  --color-ink-tertiary:    #62666d;
  --color-border:          #23252a;
  --color-border-strong:   #34343a;
  --color-border-tertiary: #3e3e44;
  --color-success:         #34C759;
  --color-warning:         #FF9500;
  --color-danger:          #FF3B30;
  --color-info:            #5AC8FA;

  /* --- Semantic (dashboard) --- */
  --color-card-bg:         #0f1011;
  --color-card-border:     #23252a;
  --color-badge-good-bg:   rgba(52, 199, 89, 0.12);
  --color-badge-good-text: #34C759;
  --color-badge-warn-bg:   rgba(255, 149, 0, 0.12);
  --color-badge-warn-text: #FF9500;
  --color-badge-bad-bg:    rgba(255, 59, 48, 0.12);
  --color-badge-bad-text:  #FF3B30;
  --color-kpi-value:       #f7f8f8;
  --color-kpi-label:       #8a8f98;
  --color-chart-grid:      #23252a;
  --color-chart-axis:      #62666d;
  --color-nav-bg:          #010102;
  --color-nav-text:        #d0d6e0;
  --color-nav-active:      #5e6ad2;
  --color-toggle-bg:       #23252a;
  --color-toggle-knob:     #5e6ad2;
  --color-scrollbar:       #34343a;
  --color-overlay:         rgba(0, 0, 0, 0.6);

  /* --- Typography --- */
  --font-display:          "SF Pro Display", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body:             "SF Pro Text", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:             "SF Mono", SFMono-Regular, Menlo, monospace;
  --font-weight-display:   600;
  --font-weight-headline:  600;
  --font-weight-body:      400;
  --font-weight-caption:   400;
  --font-weight-button:    500;
  --font-weight-kpi:       600;
  --letter-spacing-display: -1.8px;
  --letter-spacing-headline: -0.6px;
  --letter-spacing-body:   -0.05px;
  --letter-spacing-caption: 0px;

  /* --- Spacing --- */
  --space-xxs:  4px;
  --space-xs:   8px;
  --space-sm:   12px;
  --space-md:   16px;
  --space-lg:   24px;
  --space-xl:   32px;
  --space-xxl:  48px;
  --space-section: 96px;
  --card-padding: 24px;
  --card-gap:    16px;

  /* --- Border Radius --- */
  --radius-xs:   4px;
  --radius-sm:   6px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-pill: 9999px;
  --radius-card: 12px;
  --radius-button: 8px;
  --radius-badge: 6px;
  --radius-input: 8px;

  /* --- Shadows --- */
  --shadow-none:     none;
  --shadow-sm:       0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md:       0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg:       0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-card:     0 1px 3px rgba(0, 0, 0, 0.3), 0 0 0 1px var(--color-border);
  --shadow-card-hover: 0 4px 16px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--color-border-strong);
  --shadow-dropdown: 0 8px 24px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--color-border);
  --shadow-focus:    0 0 0 2px var(--color-primary);

  /* --- Transitions --- */
  --transition-fast:   120ms ease;
  --transition-normal: 200ms ease;
  --transition-slow:   300ms ease;
}

/* ============ STRIPE THEME (Light) ============ */
[data-theme="stripe"] {
  /* --- Colors --- */
  --color-canvas:          #ffffff;
  --color-surface-1:       #f6f9fc;
  --color-surface-2:       #edf2f7;
  --color-surface-3:       #e3e8ee;
  --color-surface-4:       #d4dce4;
  --color-primary:         #533afd;
  --color-primary-hover:   #4434d4;
  --color-primary-focus:   #6c5ce7;
  --color-on-primary:      #ffffff;
  --color-ink:             #061b31;
  --color-ink-muted:       #1f334a;
  --color-ink-subtle:      #43546b;
  --color-ink-tertiary:    #5f7088;
  --color-border:          #e5edf5;
  --color-border-strong:   #d4dce4;
  --color-border-tertiary: #c8d6e0;
  --color-success:         #108c3d;
  --color-warning:         #d97706;
  --color-danger:          #dc2626;
  --color-info:            #2874ad;

  /* --- Semantic (dashboard) --- */
  --color-card-bg:         #ffffff;
  --color-card-border:     #e5edf5;
  --color-badge-good-bg:   rgba(21, 190, 83, 0.10);
  --color-badge-good-text: #108c3d;
  --color-badge-warn-bg:   rgba(217, 119, 6, 0.10);
  --color-badge-warn-text: #d97706;
  --color-badge-bad-bg:    rgba(220, 38, 38, 0.10);
  --color-badge-bad-text:  #dc2626;
  --color-kpi-value:       #061b31;
  --color-kpi-label:       #43546b;
  --color-chart-grid:      #e5edf5;
  --color-chart-axis:      #94a3b8;
  --color-nav-bg:          #ffffff;
  --color-nav-text:        #061b31;
  --color-nav-active:      #533afd;
  --color-toggle-bg:       #e5edf5;
  --color-toggle-knob:     #533afd;
  --color-scrollbar:       #d4dce4;
  --color-overlay:         rgba(6, 27, 49, 0.4);

  /* --- Typography --- */
  --font-display:          "SF Pro Display", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body:             "SF Pro Text", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:             "SF Mono", SFMono-Regular, Menlo, monospace;
  --font-weight-display:   500;
  --font-weight-headline:  500;
  --font-weight-body:      400;
  --font-weight-caption:   400;
  --font-weight-button:    400;
  --font-weight-kpi:       500;
  --letter-spacing-display: -1.4px;
  --letter-spacing-headline: -0.64px;
  --letter-spacing-body:   0px;
  --letter-spacing-caption: 0px;

  /* --- Spacing --- */
  --space-xxs:  4px;
  --space-xs:   8px;
  --space-sm:   12px;
  --space-md:   16px;
  --space-lg:   24px;
  --space-xl:   32px;
  --space-xxl:  48px;
  --space-section: 96px;
  --card-padding: 24px;
  --card-gap:    16px;

  /* --- Border Radius --- */
  --radius-xs:   2px;
  --radius-sm:   4px;
  --radius-md:   5px;
  --radius-lg:   6px;
  --radius-xl:   8px;
  --radius-pill: 9999px;
  --radius-card: 6px;
  --radius-button: 4px;
  --radius-badge: 4px;
  --radius-input: 4px;

  /* --- Shadows (blue-tinted Stripe style) --- */
  --shadow-none:     none;
  --shadow-sm:       0 1px 3px rgba(50, 50, 93, 0.08), 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md:       0 4px 12px rgba(50, 50, 93, 0.12), 0 2px 6px rgba(0, 0, 0, 0.06);
  --shadow-lg:       0 15px 35px rgba(50, 50, 93, 0.15), 0 5px 15px rgba(0, 0, 0, 0.08);
  --shadow-card:     0 2px 8px rgba(50, 50, 93, 0.10), 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 8px 24px rgba(50, 50, 93, 0.15), 0 3px 10px rgba(0, 0, 0, 0.08);
  --shadow-dropdown: 0 15px 35px rgba(50, 50, 93, 0.20), 0 5px 15px rgba(0, 0, 0, 0.10);
  --shadow-focus:    0 0 0 2px rgba(83, 58, 253, 0.3);

  /* --- Transitions --- */
  --transition-fast:   120ms ease;
  --transition-normal: 200ms ease;
  --transition-slow:   300ms ease;
}

/* ============ SHARED BASE STYLES ============ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-family: var(--font-body);
  font-weight: var(--font-weight-body);
  letter-spacing: var(--letter-spacing-body);
  color: var(--color-ink);
  background: var(--color-canvas);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background var(--transition-slow), color var(--transition-slow);
}

body {
  min-height: 100vh;
}

/* ============ TYPOGRAPHY UTILITIES ============ */
.text-display {
  font-family: var(--font-display);
  font-weight: var(--font-weight-display);
  letter-spacing: var(--letter-spacing-display);
  line-height: 1.1;
}

.text-headline {
  font-family: var(--font-display);
  font-weight: var(--font-weight-headline);
  letter-spacing: var(--letter-spacing-headline);
  line-height: 1.2;
}

.text-body {
  font-family: var(--font-body);
  font-weight: var(--font-weight-body);
  letter-spacing: var(--letter-spacing-body);
  line-height: 1.5;
}

.text-caption {
  font-family: var(--font-body);
  font-weight: var(--font-weight-caption);
  letter-spacing: var(--letter-spacing-caption);
  font-size: 12px;
  line-height: 1.4;
}

.text-kpi {
  font-family: var(--font-display);
  font-weight: var(--font-weight-kpi);
  letter-spacing: var(--letter-spacing-display);
}

.text-mono {
  font-family: var(--font-mono);
  font-size: 13px;
}

/* ============ COMPONENT TOKENS ============ */
.card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-card);
  padding: var(--card-padding);
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-card-hover);
}

.badge {
  border-radius: var(--radius-badge);
  padding: 2px 8px;
  font-size: 12px;
  font-weight: var(--font-weight-caption);
}

.badge-good {
  background: var(--color-badge-good-bg);
  color: var(--color-badge-good-text);
}

.badge-warn {
  background: var(--color-badge-warn-bg);
  color: var(--color-badge-warn-text);
}

.badge-bad {
  background: var(--color-badge-bad-bg);
  color: var(--color-badge-bad-text);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border: none;
  border-radius: var(--radius-button);
  padding: 8px 16px;
  font-family: var(--font-body);
  font-weight: var(--font-weight-button);
  font-size: 14px;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
}

/* ============ THEME TOGGLE ============ */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-toggle-bg);
  border-radius: var(--radius-pill);
  padding: 4px;
  cursor: pointer;
  border: 1px solid var(--color-border);
}

.theme-toggle__option {
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: var(--font-weight-button);
  color: var(--color-ink-subtle);
  transition: all var(--transition-fast);
  user-select: none;
}

.theme-toggle__option.active {
  background: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-sm);
}

/* ============ NAV BAR ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-nav-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-sm) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav__title {
  font-family: var(--font-display);
  font-weight: var(--font-weight-headline);
  font-size: 18px;
  letter-spacing: var(--letter-spacing-headline);
  color: var(--color-ink);
}

.nav__links {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.nav__link {
  font-size: 14px;
  color: var(--color-nav-text);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav__link:hover {
  color: var(--color-nav-active);
  background: var(--color-surface-1);
}

.nav__link.active {
  color: var(--color-nav-active);
  font-weight: var(--font-weight-button);
}

/* ============ LAYOUT ============ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-lg);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--card-gap);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--card-gap);
}

.section {
  margin-bottom: var(--space-xxl);
}

.section__title {
  font-family: var(--font-display);
  font-weight: var(--font-weight-headline);
  font-size: 20px;
  letter-spacing: var(--letter-spacing-headline);
  color: var(--color-ink);
  margin-bottom: var(--space-lg);
}

/* ============ KPI CARD ============ */
.kpi-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.kpi-card__label {
  font-size: 12px;
  color: var(--color-kpi-label);
  font-weight: var(--font-weight-caption);
}

.kpi-card__value {
  font-family: var(--font-display);
  font-weight: var(--font-weight-kpi);
  font-size: 28px;
  letter-spacing: var(--letter-spacing-display);
  color: var(--color-kpi-value);
  line-height: 1.1;
}

.kpi-card__change {
  font-size: 13px;
  font-weight: var(--font-weight-caption);
}

.kpi-card__change.positive { color: var(--color-success); }
.kpi-card__change.negative { color: var(--color-danger); }

/* ============ ATTENTION ITEMS ============ */
.attention-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface-1);
}

.attention-item__priority {
  font-size: 11px;
  font-weight: var(--font-weight-button);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  flex-shrink: 0;
}

.priority-p0 {
  background: var(--color-badge-bad-bg);
  color: var(--color-badge-bad-text);
}

.priority-p1 {
  background: var(--color-badge-warn-bg);
  color: var(--color-badge-warn-text);
}

.priority-p2 {
  background: var(--color-badge-good-bg);
  color: var(--color-badge-good-text);
}

/* ============ SCROLLBAR ============ */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--color-scrollbar);
  border-radius: var(--radius-pill);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .container { padding: var(--space-md); }
}
