/* =============================================================================
   Base Styles — Variables, Reset, Scrollbar
   Shared by login.html and index.html
   ============================================================================= */

/* =============================================================================
   1. CSS Variables
   ============================================================================= */

:root {
    /* Colors - Background */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-elevated: #30363d;

    /* Colors - Text */
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;

    /* Colors - Borders */
    --border-color: #30363d;
    --border-light: #21262d;

    /* Colors - Accents */
    --accent-blue: #58a6ff;
    --accent-green: #3fb950;
    --accent-red: #f85149;
    --accent-yellow: #d29922;
    --accent-purple: #a371f7;

    /* Colors - Trading */
    --buy-color: #3fb950;
    --sell-color: #f85149;

    /* Colors - Status */
    --success: #3fb950;
    --danger: #f85149;
    --warning: #d29922;

    /* Aliases used by login.html inline styles */
    --accent-color: var(--accent-blue);
    --accent-hover: #4393e6;
    --profit-color: var(--accent-green);
    --loss-color: var(--accent-red);

    /* Shadows */
    --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);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;

    /* Font Sizes */
    --font-2xs: 0.6rem;
    --font-xs: 0.65rem;
    --font-sm: 0.75rem;
    --font-md: 0.8rem;
    --font-base: 0.85rem;
    --font-lg: 0.9rem;
    --font-xl: 1rem;
    --font-2xl: 1.1rem;
    --font-3xl: 1.25rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;

    /* Font Families */
    --font-mono: "SF Mono", "Monaco", "Inconsolata", monospace;
    --font-sans:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu,
        sans-serif;
}

/* =============================================================================
   2. Reset & Base
   ============================================================================= */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    font-size: 14px;
}

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

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-elevated);
    border-radius: 3px;
}

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