/* ===== RESET & VARIABLES ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --primary: #1a1a1a;
    --primary-hover: #333333;
    --primary-light: #f3f3f3;
    --link: #1a1a1a;
    --link-hover: #444444;
    --accent-purple: #7c3aed;
    --success: #16a34a;
    --success-light: #dcfce7;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #dc2626;
    --danger-light: #fee2e2;
    --info: #0ea5e9;
    --info-light: #e0f2fe;

    --text: #1a1a1a;
    --text-secondary: #444444;
    --text-muted: #777777;
    --background: #ffffff;
    --surface: #ffffff;
    --border: #e0e0e0;
    --border-light: #f0f0f0;

    --radius-sm: 10px;
    --radius: 14px;
    --radius-lg: 18px;
    --radius-full: 9999px;

    --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-sm: 0 4px 12px rgba(15, 23, 42, 0.06);
    --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);
    --shadow-glow: 0 0 0 3px rgba(37, 99, 235, 0.15);

    --font: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);

    --header-height: 68px;
    --sidebar-width: 260px;
    --sidebar-collapsed: 72px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.65;
    color: var(--text);
    background: var(--background);
    min-height: 100vh;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--link);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--link-hover);
}

ul, ol {
    list-style: none;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--border-light);
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

::selection {
    background: var(--primary-light);
    color: var(--primary-hover);
}