/* PIPGIRL OS - MAIN STYLES */
/* Обновлено: Современный скроллбар, исправленный скролл, чистые рамки */

:root {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #3d3d3d;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --accent: #646cff;
    --accent-hover: #535bf2;
    --danger: #ff4757;
    --success: #2ed573;
    --warning: #ffa502;
    --border: #444;
    --sidebar-width: 300px;
    --sidebar-collapsed-width: 60px;
    --input-height-mobile: 60px;
    --header-height: 64px;
    --ai-typing-color: #10a37f;
    
    /* Цвета личностей */
    --personality-energetic: #ff00ff;    /* неоново-розовый */
    --personality-professional: #00ffff; /* неоново-синий/циан */
    --personality-creative: #ff9900;     /* неоново-оранжевый */
    --personality-scientific: #00ff00;   /* неоново-зеленый */
    
    /* Пользователь и код */
    --user-border: #646cff;              /* голубой (как кнопка отправки) */
    --code-border: #000000;              /* черный */
    
    /* Текущая личность (будет меняться JS) */
    --current-personality: var(--personality-energetic);
}

* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
}

/* 🔥 СОВРЕМЕННЫЙ СКРОЛЛБАР ДЛЯ ВСЕГО ПРИЛОЖЕНИЯ */
*::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

*::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 5px;
}

*::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 5px;
    border: 2px solid transparent;
    background-clip: padding-box;
}

*::-webkit-scrollbar-thumb:hover {
    background: #555;
    border: 2px solid transparent;
    background-clip: padding-box;
}

/* Для Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100dvh;
    overflow: hidden;
}

/* ОСНОВНОЙ КОНТЕЙНЕР */
.app-container {
    display: flex;
    height: 100dvh;
    position: relative;
    overflow: hidden;
}

/* САЙДБАР */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, width 0.3s ease;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 3000;
    overflow: hidden;
}

.sidebar.collapsed {
    transform: translateX(0);
    width: var(--sidebar-collapsed-width);
}

.sidebar.collapsed .sidebar-header {
    padding: 20px 10px;
    justify-content: center;
}

.sidebar.collapsed .logo {
    display: none;
}

.sidebar.collapsed .sidebar-content,
.sidebar.collapsed .sidebar-footer {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.sidebar.collapsed .toggle-sidebar {
    position: absolute;
    right: 10px;
    top: 20px;
    transform: rotate(180deg);
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    height: var(--header-height);
    transition: padding 0.3s ease;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--accent);
    transition: opacity 0.3s ease;
}

.toggle-sidebar {
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    z-index: 3001;
}

.toggle-sidebar:hover {
    background: var(--accent);
    color: white;
    transform: scale(1.05);
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 20px;
    display: flex;
    flex-direction: column;
    transition: opacity 0.3s ease;
}

.section-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 5px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.section-title span {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.add-btn {
    background: var(--accent);
    border: none;
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    transition: transform 0.2s;
}

.add-btn:hover {
    transform: scale(1.1);
}

.projects-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.free-chats-section {
    margin-top: 20px;
    border-top: 1px solid var(--border);
    padding-top: 20px;
    flex-shrink: 0;
}

.project-item, .chat-item {
    padding: 12px 15px;
    margin: 8px 0;
    background: var(--bg-tertiary);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    border-left: 3px solid transparent;
    flex-shrink: 0;
}

.project-item:hover, .chat-item:hover {
    background: var(--accent);
    transform: translateX(5px);
}

.project-item.active, .chat-item.active {
    background: var(--accent);
    border-left-color: var(--accent-hover);
}

.project-header {
    display: flex;
    align-items: center;
    gap: 10px;
}

.project-icon {
    color: var(--warning);
}

.project-name {
    flex: 1;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.project-chats {
    margin-top: 10px;
    margin-left: 25px;
    border-left: 2px solid var(--border);
    padding-left: 10px;
}

.chat-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    margin: 5px 0;
    font-size: 0.9rem;
}

.chat-icon {
    color: var(--success);
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--border);
    flex-shrink: 0;
    margin-top: auto;
    z-index: 3001;
    transition: opacity 0.3s ease;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    padding: 12px;
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.user-avatar {
    width: 36px;
    height: 36px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.user-details {
    flex: 1;
    overflow: hidden;
}

.user-name {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-email {
    font-size: 0.8rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.logout-btn {
    width: 100%;
    padding: 12px;
    background: var(--danger);
    border: none;
    border-radius: 8px;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 500;
    transition: all 0.2s;
}

.logout-btn:hover {
    background: #ff3742;
    transform: translateY(-2px);
}

/* 🔥 ОСНОВНАЯ ОБЛАСТЬ */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-left: var(--sidebar-width);
    transition: margin-left 0.3s ease;
    height: 100dvh;
    overflow: hidden;
}

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

/* 🔥 ХЕДЕР - ПРИКЛЕЕН К ВЕРХУ */
.chat-header {
    padding: 0 20px;
    height: var(--header-height);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-secondary);
    flex-shrink: 0;
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    right: 0;
    z-index: 2000;
}

.sidebar.collapsed + .main-content .chat-header {
    left: var(--sidebar-collapsed-width);
}

.chat-title {
    font-size: 1.3rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 15px;
}

.mobile-menu-btn {
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.2rem;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    display: none;
}

.mobile-menu-btn:hover {
    background: var(--accent);
}

.chat-actions {
    display: flex;
    gap: 10px;
}

.action-btn {
    padding: 10px 18px;
    background: var(--bg-tertiary);
    border: none;
    border-radius: 8px;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.action-btn:hover {
    background: var(--accent);
}

.action-btn.active {
    background: var(--accent);
}

.stop-btn {
    background: var(--danger);
    border: none;
    color: white;
    padding: 10px 18px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    transition: all 0.2s;
    display: none;
}

.stop-btn:hover {
    background: #ff3742;
}

.stop-btn.active {
    display: flex;
}

/* 🔥 КОНТЕЙНЕР СООБЩЕНИЙ - ИСПРАВЛЕННЫЙ СКРОЛЛ */
.messages-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 20px;
    margin-top: var(--header-height);
    margin-bottom: 80px;
    overscroll-behavior-y: contain;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
    scroll-padding-bottom: 20px;
    content-visibility: auto;
    contain-intrinsic-size: 1000px 5000px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 🔥 ОЧИЩЕННЫЕ СООБЩЕНИЯ - ОДНА ЧИСТАЯ РАМКА */
.message {
    max-width: 85%;
    padding: 16px 18px;
    border-radius: 12px;
    animation: fadeIn 0.3s ease;
    position: relative;
    margin-bottom: 20px;
    display: block;
    background: transparent;
    border: 1px solid transparent;
    /* 🔥 УБИРАЕМ ВСЕ ЭФФЕКТЫ */
    outline: none;
    box-shadow: none;
    text-shadow: none;
}

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

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

.message.user {
    margin-left: auto;
    margin-right: 0;
    border-color: var(--user-border);
    border-bottom-right-radius: 4px;
}

.message.assistant {
    margin-left: 0;
    margin-right: auto;
    border-color: var(--current-personality);
    border-bottom-left-radius: 4px;
}

.message-content {
    line-height: 1.6;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* ИНДИКАТОР НАБОРА AI */
.message.streaming .message-content::after {
    content: '▋';
    animation: blink 1s infinite;
    margin-left: 4px;
    color: var(--ai-typing-color);
    font-weight: bold;
    opacity: 1;
    display: inline-block;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0.3; }
}

.message.streaming .message-time {
    color: var(--ai-typing-color);
    font-style: italic;
}

/* 🔥 БЛОКИ КОДА - ЧИСТАЯ ЧЕРНАЯ РАМКА */
.message-content pre {
    background: var(--bg-primary);
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 10px 0;
    border: 1px solid var(--code-border);
    font-family: 'Courier New', monospace;
    animation: none;
    transition: none;
    contain: content;
}

.message-content code {
    font-family: 'Courier New', monospace;
    background: var(--bg-primary);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    border: 1px solid var(--border);
}

.message-content code:not(pre code) {
    background: rgba(100, 108, 255, 0.1);
    color: var(--accent);
    border: 1px solid rgba(100, 108, 255, 0.3);
}

.message-content pre code {
    background: transparent;
    border: none;
    padding: 0;
    display: block;
    overflow-x: auto;
}

.message-content h1, .message-content h2, .message-content h3 {
    margin: 15px 0 10px 0;
    color: var(--text-primary);
}

.message-content ul, .message-content ol {
    margin: 10px 0;
    padding-left: 20px;
}

.message-content li {
    margin: 5px 0;
}

.message-content a {
    color: var(--accent);
    text-decoration: none;
}

.message-content a:hover {
    text-decoration: underline;
}

.message-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 8px;
    text-align: right;
    display: block;
}

/* ИНДИКАТОР НАБОРА */
.typing-indicator {
    padding: 0 20px 20px 20px;
    display: flex;
    gap: 5px;
    opacity: 0;
    transition: opacity 0.3s;
    align-self: flex-start;
}

.typing-indicator.active {
    opacity: 1;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background: var(--ai-typing-color);
    border-radius: 50%;
    animation: typing 1.4s infinite;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.6; }
    30% { transform: translateY(-10px); opacity: 1; }
}

/* 🔥 INPUT КОНТЕЙНЕР */
.input-container {
    padding: 20px;
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
    flex-shrink: 0;
    z-index: 2000;
    position: fixed;
    bottom: 0;
    left: var(--sidebar-width);
    right: 0;
    contain: layout style;
}

.sidebar.collapsed + .main-content .input-container {
    left: var(--sidebar-collapsed-width);
}

.input-wrapper {
    display: flex;
    gap: 12px;
    max-width: 800px;
    margin: 0 auto;
}

.attach-btn {
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-primary);
    width: 54px;
    height: 54px;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    transition: all 0.2s;
    flex-shrink: 0;
}

.attach-btn:hover {
    background: var(--accent);
}

.attach-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.message-input {
    flex: 1;
    padding: 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    resize: none;
    min-height: 54px;
    max-height: 150px;
    font-family: inherit;
    line-height: 1.5;
    transition: border-color 0.2s;
    -webkit-font-smoothing: antialiased;
    backface-visibility: hidden;
}

.message-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

.message-input:focus {
    outline: none;
    border-color: var(--accent);
}

.send-btn {
    padding: 16px 24px;
    background: var(--accent);
    border: none;
    border-radius: 10px;
    color: white;
    cursor: pointer;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
    min-width: 120px;
    justify-content: center;
    flex-shrink: 0;
}

.send-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

.send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ========================= АДАПТИВНОСТЬ ========================= */

/* МОБИЛЬНЫЕ УСТРОЙСТВА (до 768px) */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: min(85%, 300px);
        z-index: 4000;
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .sidebar.collapsed {
        transform: translateX(-100%);
        width: min(85%, 300px);
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .toggle-sidebar {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0;
        width: 100%;
        height: 100dvh;
        overflow: hidden;
    }
    
    .sidebar.collapsed + .main-content {
        margin-left: 0;
    }
    
    .chat-header {
        padding: 0 15px;
        height: 60px;
        position: fixed;
        top: 0;
        left: 0 !important;
        right: 0;
        z-index: 1000;
    }
    
    .chat-title {
        font-size: 1.1rem;
    }
    
    .mobile-menu-btn {
        width: 36px;
        height: 36px;
        font-size: 1.1rem;
    }
    
    .chat-actions {
        gap: 8px;
    }
    
    .action-btn {
        padding: 10px 14px;
        font-size: 0.85rem;
        min-height: 40px;
        min-width: 40px;
    }
    
    .action-btn span {
        display: none;
    }
    
    .stop-btn {
        padding: 10px 14px;
        font-size: 0.85rem;
        min-height: 40px;
        min-width: 40px;
    }
    
    .stop-btn span {
        display: none;
    }
    
    .messages-container {
        padding: 15px;
        margin-top: 60px;
        margin-bottom: 70px;
        -webkit-overflow-scrolling: touch;
        overflow-anchor: none;
    }
    
    .input-container {
        position: fixed;
        bottom: 0;
        left: 0 !important;
        right: 0;
        padding: 10px 15px;
        background: var(--bg-secondary);
        border-top: 1px solid var(--border);
        z-index: 3500;
    }
    
    /* КОГДА КЛАВИАТУРА ОТКРЫТА */
    @media (max-height: 500px) {
        .input-container {
            padding-bottom: max(10px, env(safe-area-inset-bottom));
        }
        
        .messages-container {
            margin-bottom: 60px;
        }
    }
    
    .input-wrapper {
        gap: 10px;
    }
    
    .attach-btn {
        width: 48px;
        height: 48px;
        font-size: 1.2rem;
    }
    
    .message {
        max-width: 90%;
        padding: 12px 14px;
        margin-bottom: 15px;
    }
    
    .message.user {
        margin-left: auto;
        margin-right: 5%;
    }
    
    .message.assistant {
        margin-left: 5%;
        margin-right: auto;
    }
    
    .message-input {
        font-size: 16px;
        min-height: 48px;
        padding: 14px;
        -webkit-appearance: none;
        border-radius: 10px;
    }
    
    .message-input::placeholder {
        color: var(--text-secondary);
        opacity: 0.5;
        font-size: 0.95rem;
    }
    
    .send-btn {
        min-height: 48px;
        min-width: 48px;
        padding: 14px 20px;
    }
    
    .send-btn span {
        display: none;
    }
    
    .chat-item, .project-item {
        min-height: 52px;
        padding: 16px;
        margin: 6px 0;
    }
    
    .user-info {
        padding: 16px;
        margin-bottom: 12px;
    }
    
    .logout-btn {
        padding: 16px;
        min-height: 52px;
    }
    
    .sidebar-footer {
        padding: 16px;
    }
}

/* ДЕСКТОПНЫЕ УСТРОЙСТВА (769px и выше) */
@media (min-width: 769px) {
    .toggle-sidebar {
        display: flex !important;
    }
    
    .mobile-menu-btn {
        display: none !important;
    }
    
    .sidebar {
        transform: translateX(0);
        position: fixed;
    }
    
    .sidebar.collapsed {
        transform: translateX(0);
        width: var(--sidebar-collapsed-width);
    }
    
    .main-content {
        margin-left: var(--sidebar-width);
    }
    
    .sidebar.collapsed + .main-content {
        margin-left: var(--sidebar-collapsed-width);
    }
    
    @media (max-width: 1024px) {
        .sidebar {
            width: 260px;
        }
        
        .sidebar.collapsed {
            width: 60px;
        }
        
        .main-content {
            margin-left: 260px;
        }
        
        .sidebar.collapsed + .main-content {
            margin-left: 60px;
        }
        
        .message {
            max-width: 80%;
        }
    }
}

/* ОЧЕНЬ МАЛЕНЬКИЕ ЭКРАНЫ (до 359px) */
@media (max-width: 359px) {
    .sidebar {
        width: 100%;
        max-width: 100%;
    }
    
    .sidebar.collapsed {
        width: 100%;
        max-width: 100%;
    }
    
    .chat-header {
        padding: 0 10px;
        height: 56px;
    }
    
    .chat-title {
        font-size: 1rem;
    }
    
    .mobile-menu-btn {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }
    
    .action-btn {
        padding: 8px 12px;
        font-size: 0.8rem;
        min-height: 36px;
        min-width: 36px;
    }
    
    .stop-btn {
        padding: 8px 12px;
        font-size: 0.8rem;
        min-height: 36px;
        min-width: 36px;
    }
    
    .messages-container {
        padding: 12px;
        margin-top: 56px;
        margin-bottom: 60px;
    }
    
    .message {
        max-width: 95%;
        padding: 10px 12px;
        margin-bottom: 12px;
    }
    
    .message-content {
        font-size: 0.95rem;
    }
    
    .input-container {
        padding: 8px 12px;
        padding-bottom: max(8px, env(safe-area-inset-bottom));
    }
    
    .attach-btn {
        width: 44px;
        height: 44px;
        font-size: 1.1rem;
    }
    
    .message-input {
        padding: 12px;
        min-height: 44px;
        font-size: 15px;
    }
    
    .message-input::placeholder {
        font-size: 0.9rem;
    }
    
    .send-btn {
        min-height: 44px;
        min-width: 44px;
        padding: 12px;
    }
    
    .user-info {
        padding: 12px;
    }
    
    .user-avatar {
        width: 32px;
        height: 32px;
    }
}

/* ========================================================
   LOGIN PAGE STYLES (без изменений)
   ======================================================== */

body.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    min-height: 100dvh;
    overflow: auto;
}

.login-container {
    background: var(--bg-secondary);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
    width: min(400px, 90vw);
    border: 1px solid var(--border);
    animation: fadeIn 0.5s ease;
    margin: 20px;
}

.login-container .logo {
    text-align: center;
    margin-bottom: 40px;
    color: var(--accent);
    font-size: 2.2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.login-container .logo-icon {
    font-size: 3.5rem;
    color: var(--accent);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.login-container .logo-text {
    font-weight: 700;
    letter-spacing: 1px;
    background: linear-gradient(90deg, var(--accent), var(--accent-hover));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.login-container .logo-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: 5px;
    font-weight: normal;
}

.login-container .form-group {
    margin-bottom: 25px;
}

.login-container label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

.login-container .input-wrapper {
    position: relative;
}

.login-container .input-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.login-container input {
    width: 100%;
    padding: 15px 15px 15px 45px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.login-container input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(100, 108, 255, 0.1);
}

.login-container input:hover {
    border-color: var(--accent-hover);
}

.login-container .login-btn {
    width: 100%;
    padding: 16px;
    background: var(--accent);
    border: none;
    border-radius: 10px;
    color: white;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.login-container .login-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 7px 20px rgba(100, 108, 255, 0.2);
}

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

.login-container .login-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.login-container .login-btn i {
    font-size: 1.1rem;
}

.login-container .message {
    padding: 15px;
    border-radius: 10px;
    margin-top: 20px;
    display: none;
    text-align: center;
    font-size: 0.95rem;
    animation: slideIn 0.3s ease;
}

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

.login-container .error {
    background: rgba(255, 71, 87, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
}

.login-container .success {
    background: rgba(46, 213, 115, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.login-container .loading {
    background: rgba(100, 108, 255, 0.1);
    border: 1px solid var(--accent);
    color: var(--accent);
}

.login-container .version {
    text-align: center;
    margin-top: 30px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    opacity: 0.7;
}

.login-container .footer-links {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

.login-container .footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.login-container .footer-link:hover {
    color: var(--accent);
}

@media (max-width: 480px) {
    .login-container {
        width: 90%;
        padding: 30px 25px;
    }
    
    .login-container .logo {
        font-size: 1.8rem;
        margin-bottom: 30px;
    }
    
    .login-container .logo-icon {
        font-size: 3rem;
    }
}

@media (max-width: 359px) {
    .login-container {
        padding: 25px 20px;
        margin: 10px;
    }
    
    .login-container .logo {
        font-size: 1.6rem;
        margin-bottom: 25px;
        gap: 10px;
    }
    
    .login-container .logo-icon {
        font-size: 2.5rem;
    }
    
    .login-container input {
        padding: 12px 12px 12px 40px;
        font-size: 16px;
    }
    
    .login-container .input-icon {
        left: 12px;
        font-size: 1rem;
    }
    
    .login-container .login-btn {
        padding: 14px;
        font-size: 0.95rem;
    }
}

/* =============================================
   ФАЙЛОВАЯ СИСТЕМА - СТИЛИ ДЛЯ РАБОТЫ С ФАЙЛАМИ
   ============================================= */

/* Секция файлов в сайдбаре */
.chat-files-section {
    margin-top: 16px;
    border-top: 1px solid var(--border-color);
    padding-top: 8px;
}

.chat-files-section .section-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.6;
    padding: 0 4px;
}

.chat-files-section .file-count {
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 10px;
    font-size: 0.65rem;
    font-weight: normal;
}

/* Список файлов */
.chat-files-list {
    max-height: 200px;
    overflow-y: auto;
    padding-right: 4px;
}

.chat-files-list::-webkit-scrollbar {
    width: 4px;
}

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

.chat-files-list::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

/* Элемент файла - стилизован как чат */
.chat-file-item {
    padding: 6px 8px;
    margin: 2px 0;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    transition: all 0.2s ease;
    position: relative;
    cursor: default;
}

.chat-file-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Иконка файла */
.chat-file-item .file-icon {
    width: 16px;
    font-size: 0.9rem;
    opacity: 0.7;
    text-align: center;
    flex-shrink: 0;
}

/* Типы файлов с цветными иконками */
.chat-file-item .file-icon.image { color: #4caf50; }
.chat-file-item .file-icon.pdf { color: #f44336; }
.chat-file-item .file-icon.code { color: #2196f3; }
.chat-file-item .file-icon.text { color: #ff9800; }
.chat-file-item .file-icon.archive { color: #9c27b0; }
.chat-file-item .file-icon.document { color: #00bcd4; }

/* Информация о файле */
.chat-file-item .file-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

/* Название файла */
.chat-file-item .file-name {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.85rem;
    line-height: 1.3;
    color: inherit;
}

/* Размер файла */
.chat-file-item .file-size {
    font-size: 0.65rem;
    opacity: 0.5;
    line-height: 1;
}

/* Кнопка удаления */
.chat-file-item .file-delete-btn {
    opacity: 0;
    width: 20px;
    height: 20px;
    border: none;
    background: none;
    color: var(--danger);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    padding: 0;
    font-size: 0.8rem;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.chat-file-item:hover .file-delete-btn {
    opacity: 0.6;
}

.chat-file-item .file-delete-btn:hover {
    opacity: 1;
    background: rgba(244, 67, 54, 0.1);
    transform: scale(1.1);
}

/* Индикатор принадлежности чату */
.chat-file-item[data-chat-id] {
    position: relative;
}

/* Всплывающая подсказка с названием чата */
.chat-file-item[data-chat-id]:hover::after {
    content: attr(data-chat-name);
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    margin-left: 8px;
    padding: 4px 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.7rem;
    white-space: nowrap;
    z-index: 1000;
    pointer-events: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    color: var(--text-primary);
}

/* Индикатор файлов в чате */
.chat-item {
    position: relative;
}

.chat-item .file-indicator {
    margin-left: auto;
    font-size: 0.7rem;
    opacity: 0.4;
    display: flex;
    align-items: center;
    gap: 3px;
    padding: 2px 4px;
    border-radius: 10px;
    transition: all 0.2s ease;
}

.chat-item .file-indicator.has-files {
    opacity: 1;
    color: var(--accent);
    background: rgba(100, 255, 218, 0.1);
}

.chat-item .file-indicator i {
    font-size: 0.65rem;
}

/* Подсветка связи чат-файл */
.chat-file-item:hover + .chat-item,
.chat-item.highlight-file {
    background: var(--bg-tertiary);
    box-shadow: inset 2px 0 0 var(--accent);
}

.chat-item:hover .file-indicator {
    opacity: 1;
}

/* Бейдж файлов в заголовке чата */
.chat-header .file-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-left: 10px;
    padding: 2px 8px;
    background: var(--bg-tertiary);
    border-radius: 20px;
    font-size: 0.7rem;
    color: var(--text-secondary);
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.chat-header .file-badge.has-files {
    background: var(--accent);
    color: white;
    border-color: var(--accent-dark);
}

.chat-header .file-badge i {
    font-size: 0.65rem;
}

/* Анимация загрузки */
@keyframes file-upload-pulse {
    0% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.02); }
    100% { opacity: 0.6; transform: scale(1); }
}

.file-uploading {
    animation: file-upload-pulse 1.2s infinite ease-in-out;
    opacity: 0.8;
    background: var(--bg-tertiary);
}

/* Прогресс загрузки */
.upload-progress {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 16px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    z-index: 1000;
    min-width: 250px;
}

.upload-progress .progress-item {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.upload-progress .progress-item:last-child {
    margin-bottom: 0;
}

.upload-progress .progress-bar {
    flex: 1;
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    overflow: hidden;
}

.upload-progress .progress-fill {
    height: 100%;
    background: var(--accent);
    width: 0%;
    transition: width 0.3s ease;
}

.upload-progress .progress-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Статус анализа */
.analysis-status {
    font-size: 0.7rem;
    color: var(--accent);
    margin-left: 8px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.analysis-status.active {
    opacity: 1;
}

.analysis-status i {
    margin-right: 4px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Адаптивность для мобильных */
@media (max-width: 768px) {
    .chat-files-section {
        margin-top: 12px;
    }
    
    .chat-file-item {
        padding: 4px 6px;
    }
    
    .chat-file-item .file-name {
        font-size: 0.8rem;
    }
    
    .chat-header .file-badge {
        font-size: 0.65rem;
        padding: 2px 6px;
    }
}