/**
 * Swipa — Styles principaux
 * Mobile-first, dark mode. Sidebar desktop >= 768px, drawer mobile < 768px.
 */

/* ============================================
   Variables
   ============================================ */
:root {
    --bg-primary: #0a0a0b;
    --bg-secondary: #111113;
    --bg-tertiary: #1c1c1e;
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --text-muted: #52525b;
    --border-color: #27272a;

    --color-gpt: #10a37f;
    --color-claude: #d97706;
    --color-gemini: #4285f4;
    --color-mistral: #ff6b35;
    --color-grok: #a855f7;
    --color-deepseek: #0ea5e9;
    --color-llama: #0088cc;
    --color-active: var(--color-gpt);

    --font-ui: 'DM Sans', sans-serif;
    --font-mono: 'Space Mono', monospace;

    --spacing-xs: 4px; --spacing-sm: 8px; --spacing-md: 16px; --spacing-lg: 24px; --spacing-xl: 32px;
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 20px; --radius-full: 9999px;
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --sidebar-width: 260px;
}

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

html, body {
    height: 100%; overflow: hidden;
    background: var(--bg-primary); color: var(--text-primary);
    font-family: var(--font-ui); font-size: 16px; line-height: 1.5;
    -webkit-font-smoothing: antialiased; -webkit-tap-highlight-color: transparent;
}

/* ============================================
   App layout — Mobile : colonne simple. Desktop : sidebar + chat.
   ============================================ */
.app-layout {
    display: flex;
    height: 100%;
}

/* Sidebar cachée sur mobile */
.sidebar { display: none; }

#app {
    display: flex;
    flex-direction: column;
    flex: 1;
    height: 100%;
    min-width: 0;
    max-width: 100%;
    position: relative;
}

/* ============================================
   Auth Modal
   ============================================ */
.auth-overlay {
    position: fixed; inset: 0; background: var(--bg-primary); z-index: 1000;
    display: flex; align-items: center; justify-content: center; padding: var(--spacing-md);
    opacity: 0; visibility: hidden; transition: opacity 0.3s, visibility 0.3s;
}
.auth-overlay.visible { opacity: 1; visibility: visible; }

.auth-modal { width: 100%; max-width: 380px; text-align: center; }
.auth-logo { font-family: var(--font-mono); font-size: 28px; font-weight: 700; color: var(--text-primary); margin-bottom: var(--spacing-lg); }
.auth-logo span { color: var(--color-active); }
.auth-title { font-size: 22px; font-weight: 700; margin-bottom: var(--spacing-xs); }
.auth-subtitle { font-size: 14px; color: var(--text-secondary); margin-bottom: var(--spacing-lg); }
.auth-tabs { display: flex; gap: var(--spacing-sm); margin-bottom: var(--spacing-lg); }
.auth-tab { flex: 1; padding: 10px; border: none; border-radius: var(--radius-sm); font-family: var(--font-ui); font-size: 14px; font-weight: 600; cursor: pointer; transition: all 0.25s; background: var(--bg-tertiary); color: var(--text-secondary); }
.auth-tab:hover { background: var(--bg-secondary); color: var(--text-primary); }
.auth-tab.active { background: var(--color-active); color: #fff; }
.auth-error { display: none; padding: 10px 14px; border-radius: var(--radius-sm); background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.3); color: #ef4444; font-size: 13px; margin-bottom: var(--spacing-md); text-align: left; }
.auth-field { margin-bottom: var(--spacing-md); text-align: left; }
.auth-field label { display: block; font-size: 13px; font-weight: 500; color: var(--text-secondary); margin-bottom: 6px; }
.auth-field input { width: 100%; padding: 12px 16px; background: var(--bg-secondary); border: 1.5px solid var(--border-color); border-radius: var(--radius-sm); color: var(--text-primary); font-family: var(--font-ui); font-size: 15px; transition: border-color 0.25s; }
.auth-field input:focus { outline: none; border-color: var(--color-active); }
.auth-field input::placeholder { color: var(--text-muted); }
.auth-btn { width: 100%; padding: 14px; border: none; border-radius: var(--radius-sm); background: var(--color-active); color: #fff; font-family: var(--font-ui); font-size: 15px; font-weight: 600; cursor: pointer; transition: opacity 0.2s; margin-top: var(--spacing-sm); }
.auth-btn:hover { opacity: 0.9; }
.auth-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.auth-footer-text { margin-top: var(--spacing-xl); font-size: 11px; color: var(--text-muted); }

/* ============================================
   Drawer mobile (< 768px)
   ============================================ */
.drawer-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 100;
    opacity: 0; visibility: hidden; transition: opacity 0.3s, visibility 0.3s;
}
.drawer-overlay.visible { opacity: 1; visibility: visible; }

.drawer {
    position: fixed; top: 0; left: 0; bottom: 0; width: 280px; max-width: 85vw;
    background: var(--bg-secondary); border-right: 1px solid var(--border-color);
    z-index: 101; transform: translateX(-100%); transition: transform 0.3s ease;
    display: flex; flex-direction: column;
}
.drawer.open { transform: translateX(0); }

.drawer-header { display: flex; align-items: center; justify-content: space-between; padding: var(--spacing-md); border-bottom: 1px solid var(--border-color); flex-shrink: 0; }
.drawer-title { font-size: 16px; font-weight: 700; color: var(--text-primary); }
.drawer-close { background: none; border: none; color: var(--text-secondary); font-size: 24px; cursor: pointer; padding: 4px; line-height: 1; }

/* Shared conversation list styles (drawer + sidebar) */
.drawer-list, .sidebar-list { flex: 1; overflow-y: auto; padding: var(--spacing-sm); }
.drawer-empty { text-align: center; color: var(--text-muted); font-size: 13px; padding: var(--spacing-xl) var(--spacing-md); }
.drawer-group-header { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted); padding: 14px 12px 6px; }
.drawer-item { display: flex; align-items: center; gap: var(--spacing-sm); padding: 9px 10px; border-radius: var(--radius-sm); cursor: pointer; transition: background 0.2s; margin-bottom: 1px; }
.drawer-item:hover { background: var(--bg-tertiary); }
.drawer-item.active { background: var(--bg-tertiary); }
.drawer-item-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.drawer-item-content { flex: 1; min-width: 0; }
.drawer-item-title { font-size: 13px; font-weight: 500; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.drawer-item-meta { font-size: 11px; color: var(--text-muted); }
.drawer-item-delete { background: none; border: none; color: var(--text-muted); font-size: 16px; cursor: pointer; opacity: 0; transition: opacity 0.2s, color 0.2s; padding: 2px 4px; line-height: 1; flex-shrink: 0; }
.drawer-item:hover .drawer-item-delete { opacity: 1; }
.drawer-item-delete:hover { color: #ef4444; }

/* ============================================
   Sidebar desktop (>= 768px) — s'affiche via media query
   ============================================ */
.sidebar-top { padding: var(--spacing-md); border-bottom: 1px solid var(--border-color); flex-shrink: 0; }
.sidebar-logo { font-family: var(--font-mono); font-size: 20px; font-weight: 700; color: var(--text-primary); display: block; margin-bottom: 12px; }
.sidebar-logo span { color: var(--color-active); }
.sidebar-new-btn { width: 100%; padding: 10px; border: 1.5px dashed var(--border-color); border-radius: var(--radius-sm); background: none; color: var(--text-secondary); font-family: var(--font-ui); font-size: 13px; font-weight: 600; cursor: pointer; transition: all 0.2s; }
.sidebar-new-btn:hover { border-color: var(--color-active); color: var(--color-active); }

.sidebar-bottom { padding: 12px var(--spacing-md); border-top: 1px solid var(--border-color); flex-shrink: 0; }
.sidebar-user { display: flex; align-items: center; gap: 8px; margin-top: 8px; }
.sidebar-user-name { flex: 1; font-size: 13px; font-weight: 500; color: var(--text-secondary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; cursor: pointer; }
.sidebar-user-name:hover { color: var(--text-primary); }
.sidebar-btn { background: none; border: none; color: var(--text-muted); cursor: pointer; display: flex; align-items: center; padding: 4px; transition: color 0.2s; }
.sidebar-btn:hover { color: var(--text-primary); }
.sidebar-btn-logout:hover { color: #ef4444; }

.quota-counter, #quota-counter-desktop {
    font-size: 11px; font-weight: 600; color: var(--color-active);
    background: rgba(16,163,127,0.1); padding: 3px 8px; border-radius: var(--radius-full);
}

/* ============================================
   Mon Compte Modal
   ============================================ */
.account-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.7); z-index: 200; display: flex; align-items: flex-start; justify-content: center; padding: 40px var(--spacing-md); overflow-y: auto; opacity: 0; visibility: hidden; transition: opacity 0.3s, visibility 0.3s; }
.account-overlay.visible { opacity: 1; visibility: visible; }
.account-modal { width: 100%; max-width: 440px; background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 0; margin-bottom: 40px; }
.account-header { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; border-bottom: 1px solid var(--border-color); }
.account-header h2 { font-size: 18px; font-weight: 700; }
.account-close-btn { background: none; border: none; color: var(--text-secondary); font-size: 28px; cursor: pointer; line-height: 1; }
.account-section { padding: 20px 24px; border-bottom: 1px solid var(--border-color); }
.account-section:last-child { border-bottom: none; }
.account-section h3 { font-size: 14px; font-weight: 700; color: var(--text-primary); margin-bottom: 12px; }
.account-row { display: flex; justify-content: space-between; align-items: center; padding: 6px 0; }
.account-label { font-size: 13px; color: var(--text-muted); }
.account-value { font-size: 13px; color: var(--text-primary); font-weight: 500; }
.account-plan-badge { font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: var(--radius-full); }
.plan-free { background: var(--bg-tertiary); color: var(--text-secondary); }
.plan-pro { background: rgba(16,163,127,0.15); color: #10a37f; }
.plan-proplus { background: rgba(34,211,238,0.15); color: #22d3ee; }
.plan-business { background: rgba(168,85,247,0.15); color: #a855f7; }
.account-input { width: 100%; padding: 10px 14px; background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: var(--radius-sm); color: var(--text-primary); font-family: var(--font-ui); font-size: 14px; margin-bottom: 8px; }
.account-input:focus { outline: none; border-color: var(--color-active); }
.account-input::placeholder { color: var(--text-muted); }
.account-btn { width: 100%; padding: 10px; border: none; border-radius: var(--radius-sm); background: var(--color-active); color: #fff; font-family: var(--font-ui); font-size: 13px; font-weight: 600; cursor: pointer; transition: opacity 0.2s; }
.account-btn:hover { opacity: 0.85; }
.account-btn-outline { background: transparent; border: 1px solid var(--color-active); color: var(--color-active); }
.account-btn-danger-outline { width: 100%; padding: 10px; border: 1px solid rgba(239,68,68,0.4); border-radius: var(--radius-sm); background: transparent; color: #ef4444; font-family: var(--font-ui); font-size: 13px; font-weight: 600; cursor: pointer; }
.account-btn-danger-outline:hover { background: rgba(239,68,68,0.08); }
.account-btn-danger { width: 100%; padding: 10px; border: none; border-radius: var(--radius-sm); background: #ef4444; color: #fff; font-family: var(--font-ui); font-size: 13px; font-weight: 600; cursor: pointer; }
.account-btn-danger:hover { opacity: 0.85; }
.account-section-danger { background: rgba(239,68,68,0.03); }
.account-msg { display: none; padding: 10px 24px; font-size: 13px; font-weight: 500; }
.account-msg.success { background: rgba(16,163,127,0.1); color: #10a37f; }
.account-msg.error { background: rgba(239,68,68,0.1); color: #ef4444; }
.account-usage-text { font-size: 14px; color: var(--text-primary); font-weight: 600; margin-bottom: 8px; }
.account-usage-bar { height: 6px; background: var(--bg-primary); border-radius: 3px; overflow: hidden; }
.account-usage-bar-fill { height: 100%; background: var(--color-active); border-radius: 3px; transition: width 0.5s ease; }
.account-stat-row { display: flex; align-items: center; gap: 8px; padding: 4px 0; font-size: 13px; }
.account-stat-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.account-stat-name { flex: 1; color: var(--text-secondary); }
.account-stat-count { color: var(--text-primary); font-weight: 600; }
.user-name { cursor: pointer; }
.user-name:hover { color: var(--text-primary); }

/* ============================================
   Header
   ============================================ */
.app-header { flex-shrink: 0; padding: calc(var(--spacing-md) + var(--safe-top)) var(--spacing-md) 0; background: var(--bg-primary); z-index: 10; }
.header-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--spacing-md); }
.btn-menu { background: none; border: none; color: var(--text-secondary); cursor: pointer; display: flex; align-items: center; padding: 4px; transition: color 0.2s; }
.btn-menu:hover { color: var(--text-primary); }
.logo { font-family: var(--font-mono); font-size: 22px; font-weight: 700; color: var(--text-primary); letter-spacing: -0.5px; }
.logo-dot { color: var(--color-active); transition: color 0.3s ease; }
.badge-beta { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; padding: 2px 8px; border-radius: var(--radius-full); background: var(--color-active); color: var(--bg-primary); transition: background-color 0.3s ease; }
.user-info { display: flex; align-items: center; gap: 6px; }
.user-name { font-size: 12px; font-weight: 500; color: var(--text-secondary); max-width: 80px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.btn-logout { background: none; border: none; color: var(--text-muted); cursor: pointer; display: flex; align-items: center; padding: 4px; transition: color 0.2s; }
.btn-logout:hover { color: #ef4444; }
.btn-new-chat { background: none; border: 1px solid var(--border-color); color: var(--text-secondary); width: 36px; height: 36px; border-radius: var(--radius-sm); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 18px; transition: border-color 0.2s, color 0.2s; }
.btn-new-chat:hover { border-color: var(--text-secondary); color: var(--text-primary); }

/* ============================================
   Pills
   ============================================ */
.pills-container { position: relative; margin-bottom: var(--spacing-sm); }
.pills-scroll { display: flex; gap: var(--spacing-sm); overflow-x: auto; scrollbar-width: none; padding: 2px 0; }
.pills-scroll::-webkit-scrollbar { display: none; }
.pill { flex-shrink: 0; display: flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: var(--radius-full); border: 1.5px solid var(--border-color); background: transparent; color: var(--text-secondary); font-family: var(--font-ui); font-size: 13px; font-weight: 500; cursor: pointer; transition: all 0.25s ease; white-space: nowrap; }
.pill:hover { border-color: var(--text-muted); color: var(--text-primary); }
.pill.active { border-color: var(--pill-color); background: color-mix(in srgb, var(--pill-color) 15%, transparent); color: var(--text-primary); }
.pill-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--pill-color); }

/* ============================================
   Dots
   ============================================ */
.dots-indicator { display: flex; justify-content: center; gap: 6px; padding: var(--spacing-sm) 0; }
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--border-color); transition: all 0.25s ease; }
.dot.active { width: 20px; border-radius: 3px; background: var(--color-active); }

/* ============================================
   Chat area
   ============================================ */
.chat-area { flex: 1; overflow-y: auto; padding: var(--spacing-md); display: flex; flex-direction: column; gap: var(--spacing-md); scrollbar-width: thin; scrollbar-color: var(--border-color) transparent; }
.chat-area::-webkit-scrollbar { width: 4px; }
.chat-area::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 2px; }
.chat-welcome { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: var(--spacing-md); padding: var(--spacing-xl); }
.welcome-icon { font-size: 48px; opacity: 0.6; }
.welcome-title { font-size: 20px; font-weight: 700; color: var(--text-primary); }
.welcome-subtitle { font-size: 14px; color: var(--text-secondary); max-width: 280px; line-height: 1.6; }

/* Alerte limite de messages */
.chat-limit-msg { padding: 10px var(--spacing-md); background: rgba(217,119,6,0.1); border-top: 1px solid rgba(217,119,6,0.3); color: #d97706; font-size: 13px; text-align: center; flex-shrink: 0; }

/* ============================================
   Messages
   ============================================ */
.message { display: flex; gap: var(--spacing-sm); max-width: 88%; animation: messageIn 0.25s ease-out; }
@keyframes messageIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.message-user { align-self: flex-end; flex-direction: row-reverse; }
.message-assistant { align-self: flex-start; }
.message-avatar { flex-shrink: 0; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; color: #fff; background: var(--color-active); margin-top: 2px; transition: background-color 0.3s ease; }
.message-bubble { padding: 10px 14px; border-radius: var(--radius-md); font-size: 14px; line-height: 1.6; word-break: break-word; white-space: pre-wrap; }
.message-user .message-bubble { background: linear-gradient(135deg, var(--color-active), color-mix(in srgb, var(--color-active) 70%, #000)); color: #fff; border-bottom-right-radius: var(--spacing-xs); }
.message-assistant .message-bubble { background: var(--bg-tertiary); color: var(--text-primary); border-bottom-left-radius: var(--spacing-xs); }

/* ============================================
   Typing
   ============================================ */
.typing-indicator { display: flex; gap: var(--spacing-sm); align-self: flex-start; max-width: 88%; }
.typing-bubble { display: flex; align-items: center; gap: 4px; padding: 12px 18px; background: var(--bg-tertiary); border-radius: var(--radius-md); border-bottom-left-radius: var(--spacing-xs); }
.typing-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--text-muted); animation: typingBounce 1.2s ease-in-out infinite; }
.typing-dot:nth-child(2) { animation-delay: 0.15s; }
.typing-dot:nth-child(3) { animation-delay: 0.3s; }
@keyframes typingBounce { 0%, 60%, 100% { transform: translateY(0); opacity: 0.4; } 30% { transform: translateY(-6px); opacity: 1; } }

/* ============================================
   Input
   ============================================ */
.input-area { flex-shrink: 0; padding: var(--spacing-sm) var(--spacing-md) calc(var(--spacing-md) + var(--safe-bottom)); background: var(--bg-primary); border-top: 1px solid var(--border-color); }
.input-wrapper { display: flex; align-items: flex-end; gap: var(--spacing-sm); background: var(--bg-secondary); border: 1.5px solid var(--border-color); border-radius: var(--radius-lg); padding: 6px 6px 6px 16px; transition: border-color 0.25s ease; }
.input-wrapper:focus-within { border-color: var(--color-active); }
#message-input { flex: 1; background: none; border: none; outline: none; color: var(--text-primary); font-family: var(--font-ui); font-size: 15px; line-height: 1.4; resize: none; max-height: 120px; padding: 8px 0; }
#message-input::placeholder { color: var(--text-muted); }
.btn-send { flex-shrink: 0; width: 40px; height: 40px; border-radius: 50%; border: none; background: var(--color-active); color: #fff; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: background-color 0.3s, transform 0.15s, opacity 0.2s; }
.btn-send:hover { transform: scale(1.05); }
.btn-send:active { transform: scale(0.95); }
.btn-send:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
.btn-send svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }

/* ============================================
   Footer
   ============================================ */
.app-footer { flex-shrink: 0; text-align: center; padding: var(--spacing-xs) var(--spacing-md) calc(var(--spacing-sm) + var(--safe-bottom)); font-size: 11px; color: var(--text-muted); letter-spacing: 0.3px; }
.app-version { color: #3f3f46; font-size: 11px; }

/* ============================================
   Responsive — Desktop (>= 768px) : sidebar permanente
   ============================================ */
@media (min-width: 768px) {
    /* Afficher la sidebar comme panel fixe a gauche */
    .sidebar {
        display: flex !important;
        flex-direction: column;
        width: var(--sidebar-width);
        min-width: var(--sidebar-width);
        max-width: var(--sidebar-width);
        height: 100%;
        background: var(--bg-secondary);
        border-right: 1px solid var(--border-color);
        overflow: hidden;
    }

    /* Sidebar top : logo + bouton nouvelle conversation */
    .sidebar-top {
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--border-color);
        flex-shrink: 0;
    }
    .sidebar-logo {
        font-family: var(--font-mono);
        font-size: 20px;
        font-weight: 700;
        color: var(--text-primary);
        display: block;
        margin-bottom: 12px;
    }
    .sidebar-logo span { color: var(--color-active); }
    .sidebar-new-btn {
        width: 100%;
        padding: 10px 12px;
        border: 1.5px dashed var(--border-color);
        border-radius: var(--radius-sm);
        background: none;
        color: var(--text-secondary);
        font-family: var(--font-ui);
        font-size: 13px;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.2s;
    }
    .sidebar-new-btn:hover {
        border-color: var(--color-active);
        color: var(--color-active);
    }

    /* Sidebar liste conversations : scroll */
    .sidebar-list {
        flex: 1;
        overflow-y: auto;
        padding: var(--spacing-sm);
        scrollbar-width: thin;
        scrollbar-color: var(--border-color) transparent;
    }
    .sidebar-list::-webkit-scrollbar { width: 4px; }
    .sidebar-list::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 2px; }

    /* Sidebar bottom : quota + user */
    .sidebar-bottom {
        padding: 12px var(--spacing-md);
        border-top: 1px solid var(--border-color);
        flex-shrink: 0;
    }
    .sidebar-user {
        display: flex;
        align-items: center;
        gap: 8px;
        margin-top: 8px;
    }
    .sidebar-user-name {
        flex: 1;
        font-size: 13px;
        font-weight: 500;
        color: var(--text-secondary);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        cursor: pointer;
    }
    .sidebar-user-name:hover { color: var(--text-primary); }
    .sidebar-btn {
        background: none; border: none; color: var(--text-muted);
        cursor: pointer; display: flex; align-items: center; padding: 4px; transition: color 0.2s;
    }
    .sidebar-btn:hover { color: var(--text-primary); }
    .sidebar-btn-logout:hover { color: #ef4444; }

    /* Chat prend tout l'espace restant */
    #app {
        flex: 1;
        max-width: none;
        margin: 0;
    }

    /* Cacher les elements mobile */
    .mobile-only { display: none !important; }
    .btn-menu { display: none !important; }

    /* Drawer mobile desactive sur desktop */
    .drawer, .drawer-overlay { display: none !important; }

    /* Chat ajustements desktop */
    .message { max-width: 75%; }
    .message-bubble { font-size: 15px; }
    .chat-welcome { padding: var(--spacing-xl) 40px; }

    /* Header plus aéré sur desktop */
    .header-top { padding: 0 var(--spacing-sm); }
}

@media (min-width: 1200px) {
    body { background: #050506; }
    .sidebar { background: #0e0e10; }
}