/**
 * Swipa — Styles principaux
 * Mobile-first (375px), dark mode par défaut
 */

/* ============================================
   Variables CSS — Couleurs et theming
   ============================================ */
:root {
    --bg-primary: #0a0a0b;
    --bg-secondary: #141415;
    --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);
}

/* ============================================
   Reset et base
   ============================================ */
*, *::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;
    -moz-osx-font-smoothing: grayscale;
    -webkit-tap-highlight-color: transparent;
}

/* ============================================
   Layout principal
   ============================================ */
#app {
    display: flex;
    flex-direction: column;
    height: 100%;
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

/* ============================================
   Auth Modal (plein écran, bloquant)
   ============================================ */
.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, transform 0.15s;
    margin-top: var(--spacing-sm);
}
.auth-btn:hover { opacity: 0.9; }
.auth-btn:active { transform: scale(0.98); }
.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 (panneau latéral historique)
   ============================================ */
.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: 80vw;
    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;
}

.drawer-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-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.2s;
    margin-bottom: 2px;
}
.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: 18px;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s, color 0.2s;
    padding: 2px 4px;
    line-height: 1;
}
.drawer-item:hover .drawer-item-delete { opacity: 1; }
.drawer-item-delete:hover { color: #ef4444; }

/* ============================================
   Header — Logo + User + Pills
   ============================================ */
.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;
    justify-content: 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 dans le header */
.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; }

/* Quota counter */
.quota-counter {
    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);
    transition: color 0.3s, background 0.3s;
}

.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 — Sélection des modèles IA
   ============================================ */
.pills-container {
    position: relative;
    margin-bottom: var(--spacing-sm);
}

.pills-scroll {
    display: flex;
    gap: var(--spacing-sm);
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: 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 indicator
   ============================================ */
.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);
}

/* ============================================
   Zone de chat
   ============================================ */
.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; }

/* ============================================
   Bulles de 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);
}

/* ============================================
   Animation de 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; }
}

/* ============================================
   Zone de saisie
   ============================================ */
.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 ease, transform 0.15s ease, opacity 0.2s ease;
}
.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;
}

/* ============================================
   Responsive
   ============================================ */
@media (min-width: 768px) {
    #app {
        max-width: 600px;
        border-left: 1px solid var(--border-color);
        border-right: 1px solid var(--border-color);
    }
    .message { max-width: 80%; }
    .chat-welcome { padding: var(--spacing-xl); }
    .drawer { width: 320px; }
}

@media (min-width: 1200px) {
    body { background: #050506; }
    #app { max-width: 600px; }
    .message-bubble { font-size: 15px; }
}