/**
 * Stage Page v2 - Design Tokens
 *
 * CSS custom properties for consistent styling.
 * Clean design only - no variant switching.
 */

:root {
  /* ========================================
   * Colors - Clean Design
   * ======================================== */

  /* Background colors */
  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: #F5F5F7;
  --color-bg-tertiary: #E8E8ED;
  --color-bg-card: #FFFFFF;
  --color-bg-overlay: rgba(0, 0, 0, 0.5);

  /* Text colors */
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #666666;
  --color-text-tertiary: #8E8E93;
  --color-text-muted: #AEAEB2;
  --color-text-inverse: #FFFFFF;

  /* Brand colors */
  --color-brand-primary: #FF6B35;
  --color-brand-secondary: #34C759;
  --color-brand-accent: #007AFF;

  /* Status colors */
  --color-success: #34C759;
  --color-warning: #FF9500;
  --color-error: #FF3B30;
  --color-info: #007AFF;

  /* Border colors */
  --color-border-light: rgba(0, 0, 0, 0.08);
  --color-border-medium: rgba(0, 0, 0, 0.12);
  --color-border-dark: rgba(0, 0, 0, 0.2);

  /* ========================================
   * Typography
   * ======================================== */

  --font-family-primary: 'Figtree', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: 'SF Mono', Monaco, 'Andale Mono', monospace;

  /* Font sizes */
  --font-size-xs: 0.6875rem;    /* 11px */
  --font-size-sm: 0.8125rem;    /* 13px */
  --font-size-base: 0.9375rem;  /* 15px */
  --font-size-md: 1rem;         /* 16px */
  --font-size-lg: 1.125rem;     /* 18px */
  --font-size-xl: 1.25rem;      /* 20px */
  --font-size-2xl: 1.5rem;      /* 24px */
  --font-size-3xl: 1.875rem;    /* 30px */
  --font-size-4xl: 2.25rem;     /* 36px */

  /* Font weights */
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Line heights */
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Letter spacing */
  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.05em;
  --letter-spacing-wider: 0.1em;

  /* ========================================
   * Spacing
   * ======================================== */

  --space-0: 0;
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */

  /* ========================================
   * Border Radius
   * ======================================== */

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* ========================================
   * Shadows
   * ======================================== */

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);

  /* Card shadow */
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 4px 16px rgba(0, 0, 0, 0.1);

  /* ========================================
   * Transitions
   * ======================================== */

  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;

  --transition-color: color var(--transition-fast);
  --transition-bg: background-color var(--transition-fast);
  --transition-transform: transform var(--transition-normal);
  --transition-opacity: opacity var(--transition-normal);
  --transition-shadow: box-shadow var(--transition-normal);

  /* ========================================
   * Z-Index Scale
   * ======================================== */

  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
  --z-toast: 800;

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

  --container-max-width: 1280px;
  --container-padding: var(--space-5);
  --container-padding-lg: var(--space-10);

  --sidebar-width: 260px;
  --header-height: 64px;
  --bottom-nav-height: 80px;

  /* ========================================
   * Breakpoints (for reference)
   * ======================================== */
  /* --breakpoint-sm: 640px; */
  /* --breakpoint-md: 768px; */
  /* --breakpoint-lg: 1024px; */
  /* --breakpoint-xl: 1280px; */
}

/* ========================================
 * Base Styles
 * ======================================== */

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-secondary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========================================
 * Utility Classes
 * ======================================== */

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

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}