/**
 * Goodev meet - Design System
 * Aligned with goodev.fr brand guidelines
 * Version: 2.0
 */

/* ========================================
   CSS RESET
   ======================================== */

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

/* ========================================
   DESIGN TOKENS (Light)
   ======================================== */

:root {
    /* Couleurs Light */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-tertiary: #9ca3af;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-light: #60a5fa;
    --border-color: #e5e7eb;
    --border-hover: #d1d5db;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;

    /* Typographie */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* Espacement */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    /* Bordures */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-full: 9999px;

    /* Ombres */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.1);
    --shadow-2xl: 0 25px 50px rgba(0,0,0,0.15);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Z-index */
    --z-header: 100;
    --z-sidebar: 500;
    --z-modal: 1000;
    --z-tooltip: 2000;
}

/* ========================================
   DARK THEME TOKENS
   ======================================== */

[data-theme="dark"] {
    --bg-primary: #1e1e2e;
    --bg-secondary: #2a2a3e;
    --bg-tertiary: #363650;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0c0;
    --text-tertiary: #8888a0;
    --accent: #60a5fa;
    --accent-hover: #3b82f6;
    --accent-light: #93c5fd;
    --border-color: #4a4a5e;
    --border-hover: #5a5a70;
    --success: #4ade80;
    --error: #fb7185;
    --warning: #fbbf24;
    --info: #60a5fa;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.3);
}

/* ========================================
   BASE TYPOGRAPHY
   ======================================== */

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    min-height: 100vh;
    transition: background-color var(--transition-base), color var(--transition-base);
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.25;
    font-weight: 600;
    color: var(--text-primary);
}

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

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

code, pre {
    font-family: var(--font-mono);
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

*:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

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

.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--accent);
    color: white;
    padding: 0.5rem 1rem;
    z-index: 10000;
    text-decoration: none;
    font-weight: 600;
}

.skip-link:focus {
    position: static;
}