/**
 * DESIGN TOKENS - Single Source of Truth
 * Basé sur SPEC-002 pour le design purple/pink moderne
 * Inspiré des mockups fournis
 */

:root {
    /* === PALETTE PURPLE/PINK === */
    --color-bg-primary: #0A0A0A;
    /* Très sombre (quasi noir) */
    --color-bg-secondary: #141414;
    --color-bg-elevated: #1A1A1A;
    --color-bg-card: #1E1E1E;
    --color-bg-input: #0F0F0F;

    /* Purple Gradient */
    --color-purple-primary: #8B5CF6;
    /* Violet vibrant */
    --color-purple-hover: #7C3AED;
    --color-purple-dark: #6D28D9;

    /* Pink Gradient */
    --color-pink-primary: #EC4899;
    /* Rose vibrant */
    --color-pink-hover: #DB2777;

    /* Gradients */
    --gradient-purple-pink: linear-gradient(135deg, #8B5CF6 0%, #EC4899 100%);
    --gradient-purple-pink-hover: linear-gradient(135deg, #7C3AED 0%, #DB2777 100%);

    /* Texte */
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #A1A1AA;
    /* Gray 400 */
    --color-text-muted: #71717A;
    /* Gray 500 */
    --color-text-dim: #52525B;
    /* Gray 600 */

    /* Accents */
    --color-border: #27272A;
    /* Subtle border */
    --color-border-hover: #3F3F46;

    /* === ESPACEMENTS (Grille de 8px) === */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;

    /* === TYPOGRAPHIE === */
    --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-reading: 'Merriweather', serif;

    --font-size-xs: 0.75rem;
    /* 12px */
    --font-size-sm: 0.875rem;
    /* 14px */
    --font-size-base: 1rem;
    /* 16px */
    --font-size-lg: 1.125rem;
    /* 18px */
    --font-size-xl: 1.25rem;
    /* 20px */
    --font-size-2xl: 1.5rem;
    /* 24px */
    --font-size-3xl: 2rem;
    /* 32px */
    --font-size-4xl: 2.5rem;
    /* 40px */

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* === TRANSITIONS === */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

    /* === BORDERS & RADIUS === */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* === SHADOWS === */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7);
    --shadow-purple: 0 8px 32px rgba(139, 92, 246, 0.25);

    /* === Z-INDEX === */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-overlay: 500;
    --z-modal: 1000;
    --z-toast: 2000;
    --z-toast: 2000;

    /* === GLASS THEME (Adaptive) === */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-bg-hover: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-border-hover: rgba(255, 255, 255, 0.2);
    --glass-text-primary: #FFFFFF;
    --glass-text-secondary: rgba(255, 255, 255, 0.7);
    --glass-text-muted: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    --glass-blur: 20px;
    --glass-panel-bg: rgba(30, 30, 30, 0.95);
    
    /* Input Specific Tokens */
    --color-input-bg: rgba(255, 255, 255, 0.05);
    --color-input-border: rgba(255, 255, 255, 0.1);
    --color-input-placeholder: rgba(255, 255, 255, 0.4);
    --color-input-focus-bg: rgba(255, 255, 255, 0.1);
}

/* === LIGHT MODE OVERRIDES === */
.light-mode {
    --color-bg-primary: whitesmoke;
    /* #F5F5F5 */
    --color-bg-secondary: #E5E5E5;
    --color-bg-elevated: #FFFFFF;
    --color-bg-card: #FFFFFF;
    --color-bg-input: #F3F4F6;

    /* Enhanced contrast for light theme */
    --color-purple-primary: #7C3AED;
    --color-purple-hover: #6D28D9;
    --color-pink-primary: #DB2777;
    --color-pink-hover: #BE185D;

    --gradient-purple-pink: linear-gradient(135deg, #7C3AED 0%, #DB2777 100%);
    --gradient-purple-pink-hover: linear-gradient(135deg, #6D28D9 0%, #BE185D 100%);

    --color-text-primary: #050505;
    /* Quasi Noir */
    --color-text-secondary: #1F2937;
    /* Dark Gray */
    --color-text-muted: #374151;
    --color-text-dim: #4B5563;

    --color-border: #D1D5DB;
    --color-border-hover: #9CA3AF;

    /* Glass Theme Overrides */
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-bg-hover: rgba(255, 255, 255, 0.95);
    --glass-border: rgba(0, 0, 0, 0.15);
    /* Subtle dark border */
    --glass-border-hover: rgba(0, 0, 0, 0.25);
    --glass-text-primary: #000000;
    /* Dark text */
    --glass-text-secondary: #1F2937;
    --glass-text-muted: #374151;
    --glass-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    --glass-panel-bg: rgba(255, 255, 255, 0.85); /* Slightly more transparent for frosting */

    /* Input Specific Tokens (Light) */
    --color-input-bg: #FFFFFF;
    --color-input-border: #D1D5DB;
    --color-input-placeholder: #9CA3AF;
    --color-input-focus-bg: #FFFFFF;
}

/* === RESET GLOBAL === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-family: var(--font-ui);
    font-size: var(--font-size-base);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
}

/* === UTILITIES === */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.gradient-text {
    background: var(--gradient-purple-pink);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-ui);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-purple-pink);
    color: #ffffff;
    box-shadow: var(--shadow-purple);
}

.btn-primary:hover {
    background: var(--gradient-purple-pink-hover);
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(139, 92, 246, 0.35);
}

.btn:active {
    transform: translateY(0) scale(0.98);
    opacity: 0.9;
}

.btn-secondary {
    background: var(--color-bg-card);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-bg-elevated);
    border-color: var(--color-border-hover);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
}

.btn-ghost:hover {
    background: var(--color-bg-elevated);
    color: var(--color-text-primary);
}

/* === INPUTS === */
.input {
    width: 100%;
    padding: 12px 16px;
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-ui);
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
}

.input:focus {
    outline: none;
    border-color: var(--color-purple-primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.input::placeholder {
    color: var(--color-text-muted);
}

/* === CARDS === */
.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all var(--transition-base);
}

.card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
}

/* === LINKS === */
a {
    color: var(--color-purple-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* === SECTION HEADERS === */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.section-link {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-sm);
    color: var(--color-purple-primary);
    font-weight: var(--font-weight-medium);
}

.section-link:hover {
    gap: var(--space-sm);
}

/* === EMPTY STATES === */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-3xl) var(--space-lg);
    text-align: center;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: var(--space-lg);
    opacity: 0.5;
}

.empty-state-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.empty-state-text {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.empty-state-link {
    margin-top: var(--space-md);
}

/* === RESPONSIVE === */

/* Tablet (Portrait/Landscape) */
@media (max-width: 1024px) {

    .container,
    .container-wide {
        width: 100%;
        padding: 0 var(--space-md);
    }
}

@media (max-width: 768px) {

    /* Mobile Styles */
    .container,
    .container-wide {
        width: 100%;
        max-width: 100%;
        padding: 0 var(--space-md);
    }

    :root {
        --space-lg: 16px;
        --space-xl: 24px;
        --space-2xl: 32px;
        --font-size-3xl: 1.75rem;
        --font-size-4xl: 2rem;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
}