/* Header Tracker - CSS Variables / Design System */
/* Apple-inspired design tokens with maroon + gold color scheme */

:root {
    /* ========================================
       TYPOGRAPHY
       ======================================== */
    --font-sans:
        -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display",
        system-ui, -system-ui, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    --font-mono:
        "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas,
        monospace;

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

    /* Font Weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;

    /* Line Heights */
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;

    /* Letter Spacing */
    --tracking-tight: -0.025em;
    --tracking-normal: 0;
    --tracking-wide: 0.025em;
    --tracking-wider: 0.05em;
    --tracking-widest: 0.1em;

    /* ========================================
       COLORS - Dark Maroon Theme
       ======================================== */

    /* Primary - Dark Maroon */
    --color-primary: #722f37;
    --color-primary-dark: #4a1515;
    --color-primary-light: #8b4049;
    --color-primary-hover: #8b4049;
    --color-primary-subtle: rgba(114, 47, 55, 0.15);

    /* Accent - Gold */
    --color-accent: #d4af37;
    --color-accent-light: #e5c76b;
    --color-accent-dark: #b8962e;
    --color-accent-subtle: rgba(212, 175, 55, 0.15);

    /* Background Colors */
    --color-bg: #1a1a1a;
    --color-bg-secondary: #222222;
    --color-bg-elevated: #2a2a2a;

    /* Surface Colors - Slate Gray for card contrast */
    --color-surface: #374151;
    --color-surface-light: #4b5563;
    --color-surface-hover: #6b7280;
    --color-surface-active: #9ca3af;

    /* Text Colors */
    --color-text: #ffffff;
    --color-text-secondary: #e5e5e5;
    --color-text-muted: #a0a0a0;
    --color-text-subtle: #707070;
    --color-text-dark: #1a1a1a;

    /* Status Colors - Desaturated for Apple feel */
    --color-success: #34c759;
    --color-success-muted: #30b050;
    --color-success-bg: rgba(52, 199, 89, 0.12);

    --color-warning: #ff9f0a;
    --color-warning-muted: #e59009;
    --color-warning-bg: rgba(255, 159, 10, 0.12);

    --color-danger: #ff453a;
    --color-danger-muted: #e53e35;
    --color-danger-bg: rgba(255, 69, 58, 0.12);

    --color-info: #0a84ff;
    --color-info-muted: #0977e5;
    --color-info-bg: rgba(10, 132, 255, 0.12);

    /* Border Colors */
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-light: rgba(255, 255, 255, 0.12);
    --color-border-strong: rgba(255, 255, 255, 0.16);
    --color-border-accent: rgba(212, 175, 55, 0.3);

    /* Input Colors */
    --color-input-bg: #4b5563;
    --color-input-border: rgba(255, 255, 255, 0.15);
    --color-input-focus: var(--color-primary);
    --color-input-text: #ffffff;
    --color-input-placeholder: #9ca3af;

    /* ========================================
       SPACING - 4px base scale
       ======================================== */
    --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 */

    /* Semantic spacing aliases */
    --spacing-xs: var(--space-1);
    --spacing-sm: var(--space-2);
    --spacing-md: var(--space-4);
    --spacing-lg: var(--space-6);
    --spacing-xl: var(--space-8);
    --spacing-2xl: var(--space-12);

    /* ========================================
       BORDER RADIUS - Rounded corners
       ======================================== */
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-full: 9999px;

    /* ========================================
       SHADOWS - Subtle, layered
       ======================================== */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.25), 0 1px 2px rgba(0, 0, 0, 0.15);
    --shadow-md:
        0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg:
        0 10px 15px -3px rgba(0, 0, 0, 0.35), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-xl:
        0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);

    /* Inset shadows */
    --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.15);
    --shadow-inner-sm: inset 0 1px 2px rgba(0, 0, 0, 0.1);

    /* Card shadow */
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.2), 0 1px 3px rgba(0, 0, 0, 0.15);
    --shadow-card-hover:
        0 4px 12px rgba(0, 0, 0, 0.25), 0 2px 4px rgba(0, 0, 0, 0.15);

    /* Glow effects */
    --glow-primary: 0 0 20px rgba(114, 47, 55, 0.3);
    --glow-accent: 0 0 20px rgba(212, 175, 55, 0.25);

    /* ========================================
       TRANSITIONS
       ======================================== */
    --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);

    --duration-fast: 150ms;
    --duration-normal: 200ms;
    --duration-slow: 300ms;

    --transition-fast: var(--duration-fast) var(--ease-default);
    --transition-normal: var(--duration-normal) var(--ease-default);
    --transition-slow: var(--duration-slow) var(--ease-default);

    /* ========================================
       LAYOUT
       ======================================== */
    --nav-height: 56px;
    --sidebar-width: 240px;
    --content-max-width: min(94vw, 1800px);
    --content-padding: var(--space-6);

    /* ========================================
       Z-INDEX SCALE
       ======================================== */
    --z-base: 0;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-overlay: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-toast: 600;
    --z-tooltip: 700;

    /* ========================================
       LEGACY COMPATIBILITY
       Keep old variable names working
       ======================================== */
    --font-family: var(--font-sans);
    --font-size-xs: var(--text-xs);
    --font-size-sm: var(--text-sm);
    --font-size-md: var(--text-base);
    --font-size-lg: var(--text-lg);
    --font-size-xl: var(--text-xl);
    --font-size-2xl: var(--text-2xl);
    --font-size-3xl: var(--text-3xl);
    --font-weight-normal: var(--font-normal);
    --font-weight-medium: var(--font-medium);
    --font-weight-semibold: var(--font-semibold);
    --font-weight-bold: var(--font-bold);

    /* Legacy font size references used in inline styles */
    --font-xs: var(--text-xs);
    --font-sm: var(--text-sm);
    --font-md: var(--text-base);
}

/* ========================================
   LIGHT MODE (Future)
   ======================================== */
[data-theme="light"] {
    --color-bg: #f5f5f7;
    --color-bg-secondary: #eeeeef;
    --color-bg-elevated: #ffffff;

    --color-surface: #ffffff;
    --color-surface-light: #fafafa;
    --color-surface-hover: #f0f0f0;

    --color-text: #1d1d1f;
    --color-text-secondary: #424245;
    --color-text-muted: #6e6e73;
    --color-text-subtle: #86868b;

    --color-border: rgba(0, 0, 0, 0.08);
    --color-border-light: rgba(0, 0, 0, 0.06);
    --color-border-strong: rgba(0, 0, 0, 0.12);

    --color-input-bg: #ffffff;
    --color-input-border: rgba(0, 0, 0, 0.12);
    --color-input-text: #1d1d1f;
    --color-input-placeholder: #86868b;

    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-card-hover:
        0 4px 12px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
}