/*
Theme Name: ARSEau
Description: Un thème WordPress moderne et responsive pour créer des sites web élégants et performants. Conçu avec les dernières technologies web et optimisé pour l'expérience utilisateur.
Author: Équipe ARSEau
Version: 1.0.0
License: GPL v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: arseau
Domain Path: /languages
Requires at least: 5.0
Tested up to: 6.4
Requires PHP: 7.4
Tags: blog, two-columns, right-sidebar, custom-colors, custom-logo, custom-menu, featured-images, footer-widgets, full-width-template, rtl-language-support, sticky-post, theme-options, threaded-comments, translation-ready, block-styles, wide-blocks
*/

/* ================================
   VARIABLES CSS PERSONNALISÉES
   ================================ */
:root {
    /* Couleurs principales */
    --arseau-primary: #667eea;
    --arseau-secondary: #764ba2;
    --arseau-gradient: linear-gradient(135deg, var(--arseau-primary) 0%, var(--arseau-secondary) 100%);
    
    /* Couleurs de texte */
    --color-text-primary: #333333;
    --color-text-secondary: #666666;
    --color-text-muted: #999999;
    --color-text-inverse: #ffffff;
    
    /* Couleurs de fond */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-dark: #1a1a1a;
    --color-bg-card: #ffffff;
    
    /* Couleurs de bordure */
    --color-border-light: #eeeeee;
    --color-border-medium: #dddddd;
    --color-border-dark: #cccccc;
    
    /* Couleurs d'état */
    --color-success: #28a745;
    --color-warning: #ffc107;
    --color-danger: #dc3545;
    --color-info: #17a2b8;
    
    /* Typographie */
    --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-heading: var(--font-family-primary);
    --font-family-mono: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    
    /* Tailles de police */
    --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: 1.875rem;  /* 30px */
    --font-size-4xl: 2.25rem;   /* 36px */
    --font-size-5xl: 3rem;      /* 48px */
    
    /* Hauteurs de ligne */
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.6;
    --line-height-loose: 1.8;
    
    /* Espacements */
    --spacing-xs: 0.25rem;   /* 4px */
    --spacing-sm: 0.5rem;    /* 8px */
    --spacing-md: 1rem;      /* 16px */
    --spacing-lg: 1.5rem;    /* 24px */
    --spacing-xl: 2rem;      /* 32px */
    --spacing-2xl: 3rem;     /* 48px */
    --spacing-3xl: 4rem;     /* 64px */
    
    /* Bordures */
    --border-radius-sm: 0.25rem;  /* 4px */
    --border-radius: 0.375rem;    /* 6px */
    --border-radius-md: 0.5rem;   /* 8px */
    --border-radius-lg: 0.75rem;  /* 12px */
    --border-radius-xl: 1rem;     /* 16px */
    
    /* Ombres */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* Largeurs de conteneur */
    --container-xs: 20rem;      /* 320px */
    --container-sm: 24rem;      /* 384px */
    --container-md: 28rem;      /* 448px */
    --container-lg: 32rem;      /* 512px */
    --container-xl: 36rem;      /* 576px */
    --container-2xl: 42rem;     /* 672px */
    --container-3xl: 48rem;     /* 768px */
    --container-4xl: 56rem;     /* 896px */
    --container-5xl: 64rem;     /* 1024px */
    --container-6xl: 72rem;     /* 1152px */
    --container-max: 80rem;     /* 1280px */
    
    /* Points de rupture */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    --breakpoint-2xl: 1536px;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;
}

/* ================================
   MODE SOMBRE
   ================================ */
.dark-mode {
    --color-text-primary: #e0e0e0;
    --color-text-secondary: #b0b0b0;
    --color-text-muted: #888888;
    --color-text-inverse: #1a1a1a;
    
    --color-bg-primary: #1a1a1a;
    --color-bg-secondary: #2d2d2d;
    --color-bg-card: #2d2d2d;
    
    --color-border-light: #404040;
    --color-border-medium: #555555;
    --color-border-dark: #666666;
}

/* ================================
   RESET ET NORMALISATION
   ================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    line-height: var(--line-height-normal);
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    font-weight: 400;
    line-height: var(--line-height-relaxed);
    color: var(--color-text-primary);
    background-color: var(--color-bg-secondary);
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ================================
   TYPOGRAPHIE
   ================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: 600;
    line-height: var(--line-height-tight);
    color: var(--color-text-primary);
    margin: 0 0 var(--spacing-md);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin: 0 0 var(--spacing-lg);
    line-height: var(--line-height-loose);
}

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

a:hover,
a:focus {
    color: var(--arseau-secondary);
    text-decoration: underline;
}

a:focus-visible {
    outline: 2px solid var(--arseau-primary);
    outline-offset: 2px;
    border-radius: var(--border-radius-sm);
}

strong, b {
    font-weight: 600;
}

em, i {
    font-style: italic;
}

small {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

code {
    font-family: var(--font-family-mono);
    font-size: 0.9em;
    background: var(--color-bg-secondary);
    padding: 0.2em 0.4em;
    border-radius: var(--border-radius-sm);
    color: var(--arseau-secondary);
}

pre {
    font-family: var(--font-family-mono);
    background: #2d3748;
    color: #e2e8f0;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    overflow-x: auto;
    margin: var(--spacing-xl) 0;
    line-height: var(--line-height-normal);
}

pre code {
    background: none;
    color: inherit;
    padding: 0;
}

blockquote {
    border-left: 4px solid var(--arseau-primary);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    background: var(--color-bg-secondary);
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
    font-style: italic;
    position: relative;
}

blockquote::before {
    content: '"';
    font-size: 4rem;
    color: var(--arseau-primary);
    position: absolute;
    top: -10px;
    left: 15px;
    font-family: Georgia, serif;
    opacity: 0.3;
}

blockquote p:last-child {
    margin-bottom: 0;
}

/* ================================
   LISTES
   ================================ */
ul, ol {
    margin: var(--spacing-lg) 0;
    padding-left: var(--spacing-xl);
}

li {
    margin-bottom: var(--spacing-sm);
    line-height: var(--line-height-relaxed);
}

ul li::marker {
    color: var(--arseau-primary);
}

ol li::marker {
    color: var(--arseau-primary);
    font-weight: 600;
}

dl {
    margin: var(--spacing-lg) 0;
}

dt {
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

dd {
    margin-bottom: var(--spacing-md);
    margin-left: var(--spacing-lg);
}

/* ================================
   IMAGES ET MÉDIAS
   ================================ */
img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

img:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

img.lazy {
    opacity: 0;
    transition: opacity 0.6s ease;
}

img.loaded {
    opacity: 1;
}

figure {
    margin: var(--spacing-xl) 0;
    text-align: center;
}

figcaption {
    font-style: italic;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

/* ================================
   STRUCTURE PRINCIPALE
   ================================ */
.site {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.site-content {
    flex: 1;
}

/* ================================
   HEADER
   ================================ */
.site-header {
    background: var(--arseau-gradient);
    color: var(--color-text-inverse);
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    transition: all var(--transition-normal);
}

.site-header.scrolled {
    background: rgba(102, 126, 234, 0.95);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) 0;
}

.header-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
}

.site-branding {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.site-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin: 0;
}

.site-title a {
    color: var(--color-text-inverse);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.site-title a:hover {
    opacity: 0.9;
    text-decoration: none;
}

.site-description {
    font-size: var(--font-size-sm);
    opacity: 0.8;
    margin: var(--spacing-xs) 0 0;
    color: var(--color-text-inverse);
}

.custom-logo-link {
    display: block;
    line-height: 0;
}

.custom-logo {
    max-height: 60px;
    width: auto;
}

/* ================================
   NAVIGATION
   ================================ */
.main-navigation {
    position: relative;
}

.main-navigation ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.main-navigation a {
    color: var(--color-text-inverse);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    font-weight: 500;
    position: relative;
}

.main-navigation a:hover,
.main-navigation a:focus {
    background: rgba(255, 255, 255, 0.15);
    text-decoration: none;
}

.main-navigation .current-menu-item > a,
.main-navigation .current_page_item > a {
    background: rgba(255, 255, 255, 0.2);
}

/* Sous-menus */
.main-navigation .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-bg-primary);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-sm) 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: var(--z-dropdown);
}

.main-navigation .menu-item:hover .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.main-navigation .sub-menu a {
    color: var(--color-text-primary);
    padding: var(--spacing-sm) var(--spacing-lg);
    display: block;
    border-radius: 0;
}

.main-navigation .sub-menu a:hover {
    background: var(--color-bg-secondary);
    color: var(--arseau-primary);
}

/* Menu mobile */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-inverse);
    font-size: var(--font-size-lg);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: background-color var(--transition-fast);
}

.menu-toggle:hover {
    background: rgba(255, 255, 255, 0.15);
}

.menu-toggle:focus-visible {
    outline: 2px solid var(--color-text-inverse);
    outline-offset: 2px;
}

/* ================================
   CONTENU PRINCIPAL
   ================================ */
.site-main {
    max-width: var(--container-max);
    margin: var(--spacing-xl) auto;
    padding: 0 var(--spacing-lg);
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.no-sidebar .site-main {
    grid-template-columns: 1fr;
    max-width: var(--container-4xl);
}

/* ================================
   ARTICLES
   ================================ */
.post {
    background: var(--color-bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-2xl);
    overflow: hidden;
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(20px);
}

.post.loaded,
.post.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.post:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.post-header {
    padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border-light);
}

.post-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-tight);
}

.post-title a {
    color: var(--color-text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.post-title a:hover {
    color: var(--arseau-primary);
    text-decoration: none;
}

.post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    align-items: center;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.meta-item i {
    color: var(--arseau-primary);
    font-size: 0.9em;
}

.meta-item a {
    color: var(--color-text-secondary);
    text-decoration: none;
}

.meta-item a:hover {
    color: var(--arseau-primary);
}

.post-thumbnail {
    position: relative;
    overflow: hidden;
    margin: var(--spacing-lg) 0;
}

.post-thumbnail img {
    width: 100%;
    height: auto;
    transition: transform var(--transition-slow);
}

.post:hover .post-thumbnail img {
    transform: scale(1.02);
}

.featured-image {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-md);
}

.image-caption {
    font-style: italic;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-sm);
    text-align: center;
}

.post-content {
    padding: 0 var(--spacing-xl) var(--spacing-xl);
    line-height: var(--line-height-loose);
    font-size: var(--font-size-lg);
}

.post-content > *:first-child {
    margin-top: 0;
}

.post-content > *:last-child {
    margin-bottom: 0;
}

.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
    margin: var(--spacing-2xl) 0 var(--spacing-md);
    color: var(--color-text-primary);
}

.post-content h2 {
    font-size: var(--font-size-2xl);
    border-bottom: 2px solid var(--arseau-primary);
    padding-bottom: var(--spacing-sm);
}

.post-content h3 {
    font-size: var(--font-size-xl);
    color: var(--arseau-primary);
}

.post-tags {
    padding: var(--spacing-md) var(--spacing-xl);
    border-top: 1px solid var(--color-border-light);
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.post-tags strong {
    color: var(--color-text-primary);
}

.post-tags a {
    color: var(--arseau-primary);
    text-decoration: none;
    margin-right: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.post-tags a:hover {
    background: var(--arseau-primary);
    color: var(--color-text-inverse);
    text-decoration: none;
}

/* ================================
   BOUTONS
   ================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--arseau-gradient);
    color: var(--color-text-inverse);
    text-decoration: none;
    border-radius: var(--border-radius-md);
    font-weight: 500;
    font-size: var(--font-size-base);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--color-text-inverse);
    text-decoration: none;
}

.btn:focus-visible {
    outline: 2px solid var(--arseau-primary);
    outline-offset: 2px;
}

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

.btn-outline {
    background: transparent;
    color: var(--arseau-primary);
    border: 2px solid var(--arseau-primary);
}

.btn-outline:hover {
    background: var(--arseau-primary);
    color: var(--color-text-inverse);
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

/* ================================
   SIDEBAR
   ================================ */
.sidebar {
    background: var(--color-bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    height: fit-content;
    position: sticky;
    top: calc(var(--spacing-lg) + 80px);
}

.widget {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border-light);
}

.widget:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.widget-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
    border-bottom: 2px solid var(--arseau-primary);
    padding-bottom: var(--spacing-sm);
    position: relative;
}

.widget-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--arseau-secondary);
}

.widget ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.widget li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.widget li:last-child {
    border-bottom: none;
}

.widget a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
    flex-grow: 1;
}

.widget a:hover {
    color: var(--arseau-primary);
    text-decoration: none;
}

/* ================================
   PAGINATION
   ================================ */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-2xl) 0;
    flex-wrap: wrap;
}

.pagination a,
.pagination span {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-medium);
    text-decoration: none;
    color: var(--color-text-primary);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    min-width: 44px;
    text-align: center;
}

.pagination a:hover {
    background: var(--arseau-primary);
    color: var(--color-text-inverse);
    border-color: var(--arseau-primary);
    text-decoration: none;
    transform: translateY(-1px);
}

.pagination .current {
    background: var(--arseau-primary);
    color: var(--color-text-inverse);
    border-color: var(--arseau-primary);
}

/* ================================
   FOOTER
   ================================ */
.site-footer {
    background: var(--color-text-primary);
    color: var(--color-text-inverse);
    padding: var(--spacing-2xl) 0;
    margin-top: var(--spacing-3xl);
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h3 {
    color: var(--color-text-inverse);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-xl);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: var(--line-height-relaxed);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-text-inverse);
    text-decoration: none;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
}

.footer-bottom a {
    color: var(--arseau-primary);
    text-decoration: none;
}

.footer-bottom a:hover {
    color: var(--color-text-inverse);
}

/* ================================
   FORMULAIRES
   ================================ */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-control {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border-medium);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
    background: var(--color-bg-card);
    color: var(--color-text-primary);
}

.form-control:focus {
    outline: none;
    border-color: var(--arseau-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

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

label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--color-text-primary);
}

.required {
    color: var(--color-danger);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

/* ================================
   UTILITAIRES
   ================================ */
.screen-reader-text {
    position: absolute !important;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

/* ================================
   ANIMATIONS
   ================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.animate-slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

/* ================================
   RESPONSIVE DESIGN
   ================================ */

/* Tablettes */
@media (max-width: 1024px) {
    :root {
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
        --spacing-3xl: 3rem;
    }
    
    .site-main {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .sidebar {
        position: static;
        margin-top: var(--spacing-xl);
    }
}

/* Mobiles */
@media (max-width: 768px) {
    :root {
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.5rem;
        --font-size-2xl: 1.25rem;
        --spacing-lg: 1rem;
        --spacing-xl: 1.25rem;
        --spacing-2xl: 1.5rem;
    }
    
    .header-container {
        padding: 0 var(--spacing-md);
        flex-wrap: wrap;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .main-navigation ul {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(102, 126, 234, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: var(--spacing-lg) 0;
        box-shadow: var(--shadow-lg);
        border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
        gap: 0;
    }
    
    .main-navigation.toggled ul {
        display: flex;
    }
    
    .main-navigation li {
        text-align: center;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        width: 100%;
    }
    
    .main-navigation li:last-child {
        border-bottom: none;
    }
    
    .main-navigation a {
        display: block;
        padding: var(--spacing-md) var(--spacing-lg);
        width: 100%;
    }
    
    .main-navigation .sub-menu {
        position: static;
        background: rgba(255, 255, 255, 0.1);
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        margin-top: var(--spacing-sm);
        border-radius: var(--border-radius);
    }
    
    .site-main {
        margin: var(--spacing-lg) auto;
        padding: 0 var(--spacing-md);
    }
    
    .post-header,
    .post-content {
        padding-left: var(--spacing-lg);
        padding-right: var(--spacing-lg);
    }
    
    .post-title {
        font-size: var(--font-size-xl);
    }
    
    .post-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .pagination {
        gap: var(--spacing-xs);
    }
    
    .pagination a,
    .pagination span {
        padding: var(--spacing-sm);
        min-width: 40px;
        font-size: var(--font-size-sm);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
}

/* Très petits écrans */
@media (max-width: 480px) {
    .header-container {
        padding: 0 var(--spacing-sm);
    }
    
    .site-main {
        padding: 0 var(--spacing-sm);
    }
    
    .post-header,
    .post-content,
    .sidebar {
        padding: var(--spacing-md);
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ================================
   PRÉFÉRENCES UTILISATEUR
   ================================ */

/* Mouvement réduit */
@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;
    }
}

/* Contraste élevé */
@media (prefers-contrast: high) {
    :root {
        --color-border-light: #000000;
        --color-border-medium: #000000;
        --color-border-dark: #000000;
    }
    
    .btn {
        border: 2px solid currentColor;
    }
}

/* ================================
   PRINT STYLES
   ================================ */
@media print {
    *,
    *::before,
    *::after {
        background: transparent !important;
        color: #000 !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }
    
    .site-header,
    .main-navigation,
    .sidebar,
    .site-footer,
    .btn,
    .pagination {
        display: none !important;
    }
    
    .site-main {
        grid-template-columns: 1fr;
        max-width: none;
        margin: 0;
        padding: 0;
    }
    
    .post {
        box-shadow: none;
        border: 1px solid #000;
        page-break-inside: avoid;
    }
    
    a[href^="http"]::after {
        content: " (" attr(href) ")";
    }
    
    h1, h2, h3, h4, h5, h6 {
        page-break-after: avoid;
    }
}

/* ================================
   OPTIMISATIONS DE PERFORMANCE
   ================================ */
.post-thumbnail img,
.featured-image {
    will-change: transform;
}

.btn {
    will-change: transform, box-shadow;
}

/* Préchargement des polices critiques */
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('https://fonts.gstatic.com/s/inter/v12/UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuLyfAZ9hiA.woff2') format('woff2');
}

/* Optimisation pour les écrans Retina */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .custom-logo {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* ================================
   ACCESSIBILITÉ AMÉLIORÉE
   ================================ */
.skip-link {
    position: absolute;
    left: -9999px;
    z-index: 999999;
    padding: var(--spacing-sm) var(--spacing-md);
    background: #000;
    color: #fff;
    text-decoration: none;
    font-weight: 600;
}

.skip-link:focus {
    left: var(--spacing-md);
    top: var(--spacing-md);
    border-radius: var(--border-radius);
}