/**
 * Wakliita - Design System Moderne et Minimaliste
 * Compatible avec tous les navigateurs modernes
 */

/* ============================================
   VARIABLES CSS
   ============================================ */
:root {
    /* Couleurs principales */
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-primary-light: #818cf8;

    /* Couleurs de fond */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-dark: #1e293b;

    /* Couleurs de texte */
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;
    --text-inverse: #ffffff;

    /* Couleurs de bordure */
    --border-color: #e2e8f0;
    --border-color-light: #f1f5f9;

    /* Couleurs de message */
    --message-user-bg: #6366f1;
    --message-user-text: #ffffff;
    --message-assistant-bg: #f8fafc;
    --message-assistant-text: #0f172a;

    /* Espacements */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Rayons de bordure */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Ombres */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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: 150ms ease-in-out;
    --transition-base: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;

    /* Typographie */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --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;

    /* Sidebar */
    --sidebar-width: 280px;
    --sidebar-width-collapsed: 80px;

    /* Topbar */
    --topbar-height: 64px;
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
    height: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

/* ============================================
   SIDEBAR
   ============================================ */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar.open {
    transform: translateX(0);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    min-height: var(--topbar-height);
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: var(--font-size-lg);
    transition: color var(--transition-fast);
}

.sidebar-brand:hover {
    color: var(--color-primary);
}

.brand-icon {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: var(--radius-md);
}

.brand-text {
    font-weight: 600;
}

.sidebar-close {
    display: none;
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.sidebar-close:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-md);
    overflow-y: auto;
}

.nav-menu {
    list-style: none;
}

.nav-item {
    position: relative;
    margin-bottom: var(--spacing-xs);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    font-weight: 500;
}

.nav-link:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-link.active {
    background-color: var(--color-primary);
    color: var(--text-inverse);
}

.nav-link i {
    font-size: var(--font-size-lg);
    width: 24px;
    text-align: center;
}

.nav-action-btn {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    opacity: 0;
    pointer-events: none;
}

.nav-item:hover .nav-action-btn {
    opacity: 1;
    pointer-events: all;
}

.nav-action-btn:hover {
    background-color: rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

.nav-link.active ~ .nav-action-btn {
    color: var(--text-inverse);
}

.nav-link.active ~ .nav-action-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.sidebar-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.copyright {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    line-height: 1.6;
}

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

.copyright a:hover {
    color: var(--color-primary-dark);
}

/* Sidebar Overlay */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
    backdrop-filter: blur(4px);
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   TOPBAR
   ============================================ */
.topbar {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    height: var(--topbar-height);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.8);
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
}

.menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: var(--font-size-xl);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
    flex-shrink: 0;
}

.menu-toggle:hover {
    background-color: var(--bg-tertiary);
}

.topbar-brand {
    display: none;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: var(--font-size-lg);
    transition: color var(--transition-fast);
    margin-left: var(--spacing-sm);
}

.topbar-brand:hover {
    color: var(--color-primary);
}

.topbar-brand-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.topbar-brand-text {
    font-weight: 600;
}

/* Afficher le logo dans le topbar quand le sidebar est fermé */
.main-content.sidebar-closed .topbar-brand {
    display: flex;
}

/* Sur desktop, le sidebar est toujours visible, donc afficher le logo aussi */
@media (min-width: 1024px) {
    .topbar-brand {
        display: flex !important;
    }
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-shrink: 0;
}

/* Language Selector */
.language-select-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--bg-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.language-select-wrapper:hover {
    border-color: var(--color-primary);
}

.language-flag {
    font-size: var(--font-size-lg);
    line-height: 1;
}

.language-select {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    outline: none;
    padding: var(--spacing-xs) 0;
    font-family: var(--font-family);
}

.language-select option {
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.main-content {
    min-height: 100vh;
    margin-left: 0;
    transition: margin-left var(--transition-base);
    display: flex;
    flex-direction: column;
}

.content-wrapper {
    flex: 1;
    padding: 0;
    max-width: 100%;
    margin: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
}

/* Variable CSS pour la hauteur dynamique du viewport */
:root {
    --vh: 100vh; /* Fallback par défaut */
}

/* Pour les pages avec chat, empêcher le scroll du body */
body.chat-page {
    height: 100vh;
    height: 100dvh; /* Dynamic viewport height - s'adapte au clavier */
    height: calc(var(--vh, 100vh) - env(safe-area-inset-top) - env(safe-area-inset-bottom));
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
    overflow: hidden;
}

body.chat-page .main-content {
    height: 100%;
    overflow: hidden;
}

/* Sur mobile, utiliser la variable --vh pour une meilleure compatibilité */
@media (max-width: 767px) {
    body.chat-page {
        height: calc(var(--vh, 100vh) - env(safe-area-inset-top) - env(safe-area-inset-bottom));
    }
}

body.chat-page .content-wrapper {
    height: 100%;
    overflow: hidden;
    padding: 0;
    padding-bottom: 0;
}

@media (max-width: 767px) {
    body.chat-page .content-wrapper {
        padding: 0;
        margin-bottom: 0;
    }
}

/* ============================================
   CHAT INTERFACE
   ============================================ */
.chat-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    max-width: 100%;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    flex: 1;
    min-height: 0;
    margin-bottom: env(safe-area-inset-bottom);
    box-sizing: border-box;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    min-height: 0;
    flex-shrink: 1;
}

/* Scrollbar styling */
.chat-messages::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-full);
    transition: background var(--transition-base);
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

.chat-messages {
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

/* Messages */
.message {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.3s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-weight: 600;
    font-size: var(--font-size-sm);
    overflow: hidden;
    background: var(--bg-tertiary);
}

.message.user .message-avatar {
    background: var(--message-user-bg);
    color: var(--message-user-text);
}

.message.assistant .message-avatar {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.message-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.message-content {
    flex: 1;
    min-width: 0;
    padding-top: var(--spacing-xs);
}

.message-content p {
    margin: 0 0 var(--spacing-md) 0;
    color: var(--text-primary);
    line-height: 1.7;
    word-wrap: break-word;
    white-space: pre-wrap;
}

.message-content p:last-child {
    margin-bottom: 0;
}

.message-content ul,
.message-content ol {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-xl);
    color: var(--text-primary);
}

.message-content li {
    margin: var(--spacing-sm) 0;
    line-height: 1.7;
}

.message-content code {
    background: var(--bg-tertiary);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9em;
    color: var(--color-primary);
}

.message-content pre {
    background: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: var(--spacing-md) 0;
    border: 1px solid var(--border-color);
}

.message-content pre code {
    background: transparent;
    padding: 0;
    color: var(--text-primary);
}

.message-content strong {
    font-weight: 600;
    color: var(--text-primary);
}

.message-content em {
    font-style: italic;
}

/* Chat Input */
.chat-input-container {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    padding-bottom: calc(var(--spacing-lg) + env(safe-area-inset-bottom, 0px));
    flex-shrink: 0;
    position: relative;
    z-index: 10;
    margin-bottom: calc(-1 * env(safe-area-inset-bottom, 0px));
}

.input-wrapper {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.textarea-wrapper {
    position: relative;
    display: flex;
    align-items: flex-end;
    gap: var(--spacing-md);
}

.chat-input {
    flex: 1;
    min-height: 52px;
    max-height: 200px;
    padding: var(--spacing-md) var(--spacing-xl) var(--spacing-md) var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    resize: none;
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
    line-height: 1.5;
}

.chat-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--bg-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

.send-button {
    position: absolute;
    right: var(--spacing-sm);
    bottom: var(--spacing-sm);
    width: 40px;
    height: 40px;
    border: none;
    border-radius: var(--radius-md);
    background: var(--color-primary);
    color: var(--text-inverse);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: var(--font-size-lg);
}

.send-button:hover:not(:disabled) {
    background: var(--color-primary-dark);
    transform: scale(1.05);
}

.send-button:active:not(:disabled) {
    transform: scale(0.95);
}

.send-button:disabled {
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    cursor: not-allowed;
    opacity: 0.6;
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) 0;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: var(--text-tertiary);
    animation: typing 1.4s infinite;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.5;
    }
    30% {
        transform: translateY(-8px);
        opacity: 1;
    }
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    color: var(--text-secondary);
    padding: var(--spacing-2xl);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.4;
    color: var(--color-primary);
}

.empty-state h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.empty-state p {
    font-size: var(--font-size-base);
    max-width: 500px;
    color: var(--text-secondary);
}

/* ============================================
   LOGIN PAGE
   ============================================ */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: var(--spacing-lg);
    padding-bottom: calc(var(--spacing-lg) + env(safe-area-inset-bottom));
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    border: 1px solid var(--border-color);
}

.login-header {
    margin-bottom: var(--spacing-2xl);
}

.login-icon {
    font-size: 4rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.login-header h1 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.login-header p {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
}

.google-login-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-primary);
    color: var(--text-inverse);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    font-family: var(--font-family);
}

.google-login-btn:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.google-login-btn:active {
    transform: translateY(0);
}

.google-login-btn i {
    font-size: var(--font-size-lg);
}

.login-footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

.login-footer p {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    line-height: 1.6;
}

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

/* Desktop (1024px et plus) */
@media (min-width: 1024px) {
    .sidebar {
        transform: translateX(0);
    }

    .main-content {
        margin-left: var(--sidebar-width);
    }

    .menu-toggle {
        display: none;
    }

    .sidebar-close {
        display: none;
    }
}

/* Tablet (768px - 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
    .content-wrapper {
        padding: 0;
    }

    .chat-container {
        height: 100%;
        border-radius: var(--radius-lg);
    }

    .chat-messages {
        padding: var(--spacing-lg);
    }
}

/* Mobile (jusqu'à 767px) */
@media (max-width: 767px) {
    :root {
        --topbar-height: 56px;
    }

    .sidebar {
        width: 100%;
        max-width: 320px;
    }

    .topbar {
        padding: 0 var(--spacing-sm);
        height: var(--topbar-height);
    }

    .topbar-left {
        gap: var(--spacing-sm);
    }

    .topbar-brand {
        font-size: var(--font-size-base);
    }

    .topbar-brand-icon {
        width: 28px;
        height: 28px;
    }

    .menu-toggle {
        width: 36px;
        height: 36px;
        font-size: var(--font-size-lg);
    }

    .content-wrapper {
        padding: 0;
        overflow: hidden;
        height: 100%;
        margin-bottom: 0;
    }

    .chat-container {
        height: 100%;
        border-radius: var(--radius-md);
        border-left: none;
        border-right: none;
        display: flex;
        flex-direction: column;
        min-height: 0;
        box-shadow: none;
    }

    .chat-messages {
        padding: var(--spacing-sm);
        min-height: 0;
        flex: 1;
        overflow-y: auto;
    }

    .message {
        margin-bottom: var(--spacing-md);
        padding: var(--spacing-sm) 0;
        gap: var(--spacing-sm);
    }

    .message-avatar {
        width: 28px;
        height: 28px;
        font-size: var(--font-size-xs);
    }

    .message-content {
        font-size: var(--font-size-sm);
    }

    .message-content p {
        margin-bottom: var(--spacing-sm);
        line-height: 1.6;
    }

    .chat-input-container {
        flex-shrink: 0;
        padding: var(--spacing-sm);
        padding-bottom: calc(var(--spacing-sm) + env(safe-area-inset-bottom, 20px));
        border-top: 1px solid var(--border-color);
    }

    .chat-input {
        min-height: 44px;
        padding: var(--spacing-sm) var(--spacing-lg) var(--spacing-sm) var(--spacing-sm);
        font-size: var(--font-size-base);
        border-radius: var(--radius-lg);
    }

    .send-button {
        width: 32px;
        height: 32px;
        right: var(--spacing-xs);
        bottom: var(--spacing-xs);
        font-size: var(--font-size-base);
    }

    .empty-state {
        padding: var(--spacing-md);
    }

    .empty-state i {
        font-size: 2.5rem;
        margin-bottom: var(--spacing-md);
    }

    .empty-state h2 {
        font-size: var(--font-size-lg);
        margin-bottom: var(--spacing-xs);
    }

    .empty-state p {
        font-size: var(--font-size-sm);
    }

    .login-card {
        padding: var(--spacing-lg);
        margin: var(--spacing-sm);
    }

    .login-icon {
        font-size: 2.5rem;
        margin-bottom: var(--spacing-md);
    }

    .login-header h1 {
        font-size: var(--font-size-xl);
    }

    .login-header p {
        font-size: var(--font-size-sm);
    }
}

/* Petits mobiles (jusqu'à 480px) */
@media (max-width: 480px) {
    :root {
        --topbar-height: 56px;
    }

    .topbar {
        padding: 0 var(--spacing-md);
    }

    .content-wrapper {
        padding: 0;
    }

    .chat-container {
        height: 100%;
        border-radius: var(--radius-md);
    }

    .chat-messages {
        padding: var(--spacing-sm);
        min-height: 0;
    }

    .chat-input-container {
        padding: var(--spacing-sm);
        padding-bottom: calc(var(--spacing-sm) + env(safe-area-inset-bottom, 20px));
        flex-shrink: 0;
    }

    .message {
        margin-bottom: var(--spacing-sm);
        gap: var(--spacing-xs);
    }

    .message-avatar {
        width: 24px;
        height: 24px;
    }

    .chat-input {
        min-height: 40px;
        padding: var(--spacing-xs) var(--spacing-md) var(--spacing-xs) var(--spacing-xs);
        font-size: var(--font-size-sm);
    }

    .send-button {
        width: 28px;
        height: 28px;
    }

    .login-card {
        padding: var(--spacing-md);
        margin: var(--spacing-xs);
    }

    .login-icon {
        font-size: 2rem;
    }

    .empty-state i {
        font-size: 2rem;
    }
}

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

/* Focus visible pour l'accessibilité */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .sidebar,
    .topbar,
    .chat-input-container,
    .sidebar-overlay {
        display: none;
    }

    .main-content {
        margin-left: 0;
    }

    .chat-container {
        height: auto;
        box-shadow: none;
        border: none;
    }
}

/* ============================================
   PWA INSTALL BUTTON
   ============================================ */
.pwa-install-btn {
    display: none;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-primary);
    color: var(--text-inverse);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-right: var(--spacing-sm);
}

.pwa-install-btn:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.pwa-install-btn:active {
    transform: translateY(0);
}

.pwa-install-btn i {
    font-size: 1rem;
}

/* Modal d'installation iOS */
.pwa-install-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    backdrop-filter: blur(4px);
}

.pwa-install-modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    max-width: 500px;
    width: 100%;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    overflow: hidden;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.pwa-install-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.pwa-install-modal-header h3 {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.pwa-install-modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.pwa-install-modal-close:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.pwa-install-modal-body {
    padding: var(--spacing-lg);
}

.pwa-install-modal-body p {
    margin: 0 0 var(--spacing-md) 0;
    color: var(--text-secondary);
    font-size: var(--font-size-base);
}

.pwa-install-modal-body ol {
    margin: 0 0 var(--spacing-lg) 0;
    padding-left: var(--spacing-lg);
    color: var(--text-primary);
}

.pwa-install-modal-body ol li {
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.pwa-install-modal-body ol li strong {
    color: var(--color-primary);
}

.pwa-install-modal-body ol li i {
    color: var(--color-primary);
    margin: 0 var(--spacing-xs);
}

.pwa-install-modal-image {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-lg);
}

@media (max-width: 767px) {
    .pwa-install-modal {
        padding: var(--spacing-sm);
    }

    .pwa-install-modal-content {
        max-width: 100%;
    }

    .pwa-install-modal-header,
    .pwa-install-modal-body {
        padding: var(--spacing-md);
    }
}