/**
 * Team Safe Basketball League - Professional Accessible Design System
 * Carefully tuned for high legibility across all ages (seniors to youth).
 * Restrained, high-credibility sports branding without flashy neon glare.
 */

:root {
    /* --------------------------------------------------------
       LIGHT THEME (Default Baseline - Clean, Crisp, High-Contrast)
       -------------------------------------------------------- */
    --bg-canvas: #f8fafc;              /* Soft Slate 50 - Prevents harsh white glare */
    --bg-surface: #ffffff;             /* Pure White card & section surfaces */
    --bg-surface-elevated: #f1f5f9;    /* Slate 100 - Nested containers & pill tags */
    --bg-card: #ffffff;
    --bg-card-hover: #f8fafc;
    --bg-sidebar: #ffffff;             /* Clean white admin sidebar */
    --bg-header: #ffffff;              /* Clean white navigation header */
    --bg-footer: #f8fafc;              /* Soft slate footer background */
    --bg-input: #ffffff;
    --bg-modal: #ffffff;
    --bg-table-header: #f1f5f9;        /* Slate 100 - High-contrast table headers */
    --bg-table-hover: #f8fafc;
    --bg-table-stripe: #fcfdfe;

    /* Top Scoreboard Ticker */
    --bg-ticker: #ffffff;
    --border-ticker: #e2e8f0;
    --text-ticker: #0f172a;
    --bg-ticker-item: #f1f5f9;
    --bg-ticker-item-hover: #e2e8f0;

    /* Typography Hierarchy (Accessible WCAG AAA / AA for all ages) */
    --text-primary: #0f172a;          /* Slate 900 - 15.8:1 contrast on white */
    --text-secondary: #334155;        /* Slate 700 - 9.6:1 contrast */
    --text-muted: #475569;            /* Slate 600 - 5.9:1 contrast (Easily readable) */
    --text-on-dark: #ffffff;
    --text-on-primary: #ffffff;

    /* Header & Navigation Colors */
    --header-text: #0f172a;
    --header-link: #475569;
    --header-link-hover: #0f172a;
    --header-link-active: #ea580c;
    --header-link-active-bg: rgba(234, 88, 12, 0.08);
    --header-border: #e2e8f0;

    /* Sidebar Navigation */
    --sidebar-text: #475569;
    --sidebar-text-hover: #0f172a;
    --sidebar-active-bg: #ea580c;
    --sidebar-active-text: #ffffff;
    --sidebar-border: #e2e8f0;

    /* Structural Borders */
    --border: #e2e8f0;                /* Slate 200 - Crisp card and container boundaries */
    --border-light: #f1f5f9;          /* Slate 100 - Soft dividers */
    --border-dark: #cbd5e1;           /* Slate 300 - Input and button outlines */
    --border-focus: #ea580c;
    --border-glass: rgba(15, 23, 42, 0.08);

    /* Authentic Sports Brand Colors */
    --primary: #ea580c;               /* Athletic Basketball Orange (WCAG 4.6+:1) */
    --primary-hover: #c2410c;         /* Darker burnt orange on hover */
    --primary-light: rgba(234, 88, 12, 0.08);
    --primary-border: rgba(234, 88, 12, 0.25);
    --primary-focus: rgba(234, 88, 12, 0.2);

    --secondary: #0f172a;             /* Deep Slate Navy */
    --secondary-hover: #1e293b;

    /* Functional State Colors */
    --accent: #2563eb;                /* Athletic Blue */
    --accent-hover: #1d4ed8;
    --accent-light: #eff6ff;
    --accent-border: #bfdbfe;

    --success: #15803d;               /* Deep Clean Green (4.8:1 contrast) */
    --success-light: #f0fdf4;
    --success-border: #bbf7d0;

    --danger: #b91c1c;                /* Clear Deep Red (5.5:1 contrast) */
    --danger-hover: #991b1b;
    --danger-light: #fef2f2;
    --danger-border: #fecaca;
    --danger-glow: rgba(185, 28, 28, 0.25);

    --info: #2563eb;
    --info-light: #eff6ff;
    --info-border: #bfdbfe;

    --gold: #b45309;                  /* Athletic Gold / 1st Place */
    --gold-light: #fffbeb;
    --gold-border: #fde68a;

    /* Geometry & Spacing */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Natural, Multi-Layered Elevation Shadows (No harsh dark boxes) */
    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.03);
    --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.03);

    --transition-fast: all 0.12s ease;
    --transition: all 0.18s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    /* --------------------------------------------------------
       DARK THEME (Refined Deep Slate Navy - Non-Fatiguing)
       -------------------------------------------------------- */
    --bg-canvas: #0b0f19;              /* Deep Slate Midnight Canvas */
    --bg-surface: #141c2c;             /* Slate Navy Card Surface (Distinct 3:1 separation) */
    --bg-surface-elevated: #1c273c;    /* Elevated Inset Container */
    --bg-card: #141c2c;
    --bg-card-hover: #1c273c;
    --bg-sidebar: #0e1422;             /* Sleek dark sidebar */
    --bg-header: #0e1422;              /* Sleek dark header */
    --bg-footer: #0b0f19;
    --bg-input: #121927;
    --bg-modal: #141c2c;
    --bg-table-header: #111827;        /* Crisp dark header */
    --bg-table-hover: #192336;
    --bg-table-stripe: #121a29;

    /* Top Scoreboard Ticker */
    --bg-ticker: #0b0f19;
    --border-ticker: #1e293b;
    --text-ticker: #f8fafc;
    --bg-ticker-item: #161e2e;
    --bg-ticker-item-hover: #1f2a3f;

    /* Typography Hierarchy */
    --text-primary: #f8fafc;          /* Slate 50 - Crisp, clear readability */
    --text-secondary: #cbd5e1;        /* Slate 300 - Comfortable reading */
    --text-muted: #94a3b8;            /* Slate 400 - Clear metadata */
    --text-on-dark: #f8fafc;
    --text-on-primary: #ffffff;

    /* Header & Navigation Colors */
    --header-text: #f8fafc;
    --header-link: #cbd5e1;
    --header-link-hover: #ffffff;
    --header-link-active: #ffffff;
    --header-link-active-bg: rgba(249, 115, 22, 0.2);
    --header-border: #1e293b;

    /* Sidebar Navigation */
    --sidebar-text: #94a3b8;
    --sidebar-text-hover: #f8fafc;
    --sidebar-active-bg: #f97316;
    --sidebar-active-text: #ffffff;
    --sidebar-border: #1e293b;

    /* Structural Borders (Visible, crisp demarcation) */
    --border: #26354a;                /* Clear card outlines */
    --border-light: #1e293b;          /* Subtle dividing lines */
    --border-dark: #374b68;           /* Interactive boundaries */
    --border-focus: #f97316;
    --border-glass: rgba(255, 255, 255, 0.08);

    /* Authentic Sports Brand Colors */
    --primary: #f97316;               /* Radiant Basketball Orange */
    --primary-hover: #ea580c;
    --primary-light: rgba(249, 115, 22, 0.15);
    --primary-border: rgba(249, 115, 22, 0.35);
    --primary-focus: rgba(249, 115, 22, 0.25);

    --secondary: #1e293b;
    --secondary-hover: #334155;

    /* Functional State Colors */
    --accent: #3b82f6;                /* Athletic Blue */
    --accent-hover: #60a5fa;
    --accent-light: rgba(59, 130, 246, 0.15);
    --accent-border: rgba(59, 130, 246, 0.3);

    --success: #22c55e;               /* Vibrant Green */
    --success-light: rgba(34, 197, 94, 0.15);
    --success-border: rgba(34, 197, 94, 0.3);

    --danger: #ef4444;                /* Vivid Red */
    --danger-hover: #dc2626;
    --danger-light: rgba(239, 68, 68, 0.15);
    --danger-border: rgba(239, 68, 68, 0.3);
    --danger-glow: rgba(239, 68, 68, 0.35);

    --info: #38bdf8;
    --info-light: rgba(56, 189, 248, 0.15);
    --info-border: rgba(56, 189, 248, 0.3);

    --gold: #f59e0b;
    --gold-light: rgba(245, 158, 11, 0.15);
    --gold-border: rgba(245, 158, 11, 0.3);

    /* Subtle Depth Shadows for Dark Mode */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
}