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

:root {
    --primary-color: #25D366;
    --secondary-color: #128C7E;
    --dark-bg: #111b21;
    --light-bg: #202c33;
    --message-bg: #005c4b;
    --received-bg: #202c33;
    --text-primary: #e9edef;
    --text-secondary: #8696a0;
    --border-color: #2a3942;
    --danger-color: #ea4335;
    --sidebar-width: 380px;
}

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

/* Страница авторизации */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    padding: 20px;
}

.auth-box {
    background: var(--light-bg);
    border-radius: 16px;
    padding: 40px;
    max-width: 450px;
    width: 100%;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header h1 {
    font-size: 32px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.auth-header p {
    color: var(--text-secondary);
    font-size: 16px;
}

.auth-form {
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--dark-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 15px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group small {
    display: block;
    margin-top: 6px;
    color: var(--text-secondary);
    font-size: 13px;
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-error {
    background: rgba(234, 67, 53, 0.2);
    border: 1px solid var(--danger-color);
    color: #ff6b6b;
}

.alert-success {
    background: rgba(37, 211, 102, 0.2);
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--dark-bg);
    width: 100%;
    justify-content: center;
}

.btn-primary:hover {
    background: #20bd5a;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
}

.auth-footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
}

.auth-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* Контейнер чата */
.chat-container {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    height: 100vh;
    overflow: hidden;
}

/* Боковая панель */
.sidebar {
    background: var(--light-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 20px;
    background: var(--light-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.user-avatar,
.chat-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 20px;
    color: var(--dark-bg);
    text-transform: uppercase;
}

.chat-avatar {
    width: 40px;
    height: 40px;
    font-size: 16px;
}

.user-info h3 {
    font-size: 16px;
    margin-bottom: 4px;
}

.user-status {
    font-size: 13px;
    color: var(--text-secondary);
}

.btn-logout {
    background: transparent;
    padding: 8px;
    color: var(--text-secondary);
}

.btn-logout:hover {
    background: var(--dark-bg);
    color: var(--text-primary);
}

/* Список чатов */
.chat-list {
    flex: 1;
    overflow-y: auto;
}

.chat-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    cursor: pointer;
    transition: background 0.2s;
    position: relative;
    border-bottom: 1px solid rgba(42, 57, 66, 0.5);
}

.chat-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.chat-item.active {
    background: var(--dark-bg);
}

.chat-item.banned {
    opacity: 0.6;
}

.chat-item.banned::after {
    content: '🚫';
    position: absolute;
    right: 20px;
    font-size: 18px;
}

.chat-info h4 {
    font-size: 16px;
    margin-bottom: 4px;
}

.chat-info p {
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.unread-badge {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary-color);
    color: var(--dark-bg);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 700;
}

/* Основная область чата */
.chat-main {
    display: flex;
    flex-direction: column;
    background: var(--dark-bg);
}

.chat-header {
    padding: 16px 24px;
    background: var(--light-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-header-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.chat-header h3 {
    font-size: 18px;
    margin-bottom: 4px;
}

.chat-header p {
    font-size: 13px;
    color: var(--text-secondary);
}

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

.btn-ban {
    background: transparent;
    color: var(--danger-color);
    padding: 8px 16px;
    border: 1px solid var(--danger-color);
}

.btn-ban:hover {
    background: rgba(234, 67, 53, 0.1);
}

.btn-ban.unbanned {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-ban.unbanned:hover {
    background: rgba(37, 211, 102, 0.1);
}

/* Контейнер сообщений */
.messages-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 20px;
    background-image: 
        repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(255,255,255,.02) 10px, rgba(255,255,255,.02) 20px);
    scroll-behavior: smooth;
    max-height: calc(100vh - 200px);
    position: relative;
}

/* Кнопка прокрутки к последнему сообщению */
.scroll-to-bottom-btn {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border: none;
    border-radius: 50%;
    color: var(--dark-bg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
    z-index: 1000;
    transition: all 0.3s ease;
}

.scroll-to-bottom-btn:hover {
    background: #20bd5a;
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(37, 211, 102, 0.4);
}

.scroll-to-bottom-btn:active {
    transform: scale(0.95);
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
}

.empty-state svg {
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state p {
    font-size: 16px;
}

/* Сообщения */
.message {
    margin-bottom: 12px;
    display: flex;
    animation: messageSlide 0.4s ease-out;
}

.message.new-message {
    animation: newMessageSlide 0.5s ease-out;
}

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

@keyframes newMessageSlide {
    0% {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    50% {
        opacity: 0.7;
        transform: translateY(-2px) scale(1.02);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.message.sent {
    justify-content: flex-end;
}

.message.received {
    justify-content: flex-start;
}

.message-bubble {
    max-width: 65%;
    padding: 8px 12px;
    border-radius: 8px;
    position: relative;
}

.message.sent .message-bubble {
    background: var(--message-bg);
    border-bottom-right-radius: 2px;
}

.message.received .message-bubble {
    background: var(--received-bg);
    border-bottom-left-radius: 2px;
}

.message-text {
    font-size: 14.5px;
    line-height: 1.5;
    word-wrap: break-word;
    margin-bottom: 4px;
}

.message-time {
    font-size: 11px;
    color: var(--text-secondary);
    text-align: right;
    margin-top: 4px;
}

.message.received .message-time {
    text-align: left;
}

/* Форма отправки сообщения */
.message-input-container {
    padding: 16px 24px;
    background: var(--light-bg);
    border-top: 1px solid var(--border-color);
}

.message-form {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

.message-form textarea {
    flex: 1;
    background: var(--dark-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--text-primary);
    font-size: 15px;
    resize: none;
    max-height: 120px;
    font-family: inherit;
}

.message-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn-send {
    background: var(--primary-color);
    width: 48px;
    height: 48px;
    padding: 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark-bg);
}

.btn-send:hover {
    background: #20bd5a;
    transform: scale(1.05);
}

.btn-send:active {
    transform: scale(0.95);
}

/* Прокрутка */
.chat-list::-webkit-scrollbar,
.messages-container::-webkit-scrollbar {
    width: 6px;
}

.chat-list::-webkit-scrollbar-thumb,
.messages-container::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.chat-list::-webkit-scrollbar-thumb:hover,
.messages-container::-webkit-scrollbar-thumb:hover {
    background: #374249;
}

/* Мобильное поле ввода скрыто на десктопе */
@media (min-width: 769px) {
    .mobile-message-input {
        display: none !important;
    }
}

/* Адаптивный дизайн */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 100%;
    }
    
    .chat-container {
        grid-template-columns: 1fr;
        height: 100vh;
        height: 100dvh; /* Динамическая высота viewport для мобильных */
        position: relative;
    }
    
    /* Принудительное отображение поля ввода на мобильных */
    .message-input-container {
        display: none !important; /* Скрываем основное поле на мобильных */
    }
    
    /* Мобильное поле ввода (всегда видимое) */
    .mobile-message-input {
        display: block !important;
        position: fixed !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        width: 100% !important;
        z-index: 99999 !important;
        background: var(--light-bg) !important;
        border-top: 3px solid var(--primary-color) !important;
        padding: 15px !important;
        box-shadow: 0 -5px 20px rgba(0,0,0,0.5) !important;
    }
    
    .mobile-input-container {
        display: block !important;
        width: 100% !important;
    }
    
    .mobile-message-form {
        display: flex !important;
        align-items: center !important;
        gap: 12px !important;
        width: 100% !important;
    }
    
    .mobile-message-form textarea {
        flex: 1 !important;
        height: 50px !important;
        font-size: 16px !important;
        padding: 12px 16px !important;
        background: var(--dark-bg) !important;
        border: 2px solid var(--primary-color) !important;
        border-radius: 25px !important;
        color: var(--text-primary) !important;
        resize: none !important;
        outline: none !important;
    }
    
    .mobile-send-btn {
        width: 50px !important;
        height: 50px !important;
        background: var(--primary-color) !important;
        border: none !important;
        border-radius: 50% !important;
        color: var(--dark-bg) !important;
        cursor: pointer !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        flex-shrink: 0 !important;
    }
    
    .mobile-send-btn:hover {
        background: #20bd5a !important;
        transform: scale(1.05) !important;
    }
    
    .message-form {
        display: flex !important;
        align-items: center !important;
        gap: 10px !important;
    }
    
    .message-form textarea {
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
        width: calc(100% - 60px) !important;
        height: 50px !important;
        font-size: 16px !important;
        padding: 12px 16px !important;
        background: var(--dark-bg) !important;
        border: 2px solid var(--primary-color) !important;
        border-radius: 25px !important;
        color: var(--text-primary) !important;
    }
    
    .btn-send {
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
        width: 50px !important;
        height: 50px !important;
        background: var(--primary-color) !important;
        border: none !important;
        border-radius: 50% !important;
        color: var(--dark-bg) !important;
        flex-shrink: 0 !important;
    }
    
    .sidebar {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: 1000;
        background: var(--light-bg);
    }
    
    .sidebar.mobile-show {
        display: flex;
    }
    
    .chat-main {
        display: none;
        width: 100%;
    }
    
    .chat-main.mobile-show {
        display: flex;
    }
    
    /* Мобильная навигация */
    .mobile-nav {
        display: flex;
        align-items: center;
        padding: 12px 16px;
        background: var(--light-bg);
        border-bottom: 1px solid var(--border-color);
    }
    
    .mobile-back-btn {
        background: none;
        border: none;
        color: var(--primary-color);
        font-size: 20px;
        margin-right: 12px;
        padding: 8px;
        cursor: pointer;
    }
    
    .mobile-nav h1 {
        font-size: 18px;
        margin: 0;
        flex: 1;
    }
    
    /* Мобильные элементы чата */
    .chat-item {
        padding: 20px 16px;
        border-bottom: 1px solid rgba(42, 57, 66, 0.3);
    }
    
    .chat-avatar {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }
    
    .chat-info h4 {
        font-size: 17px;
        margin-bottom: 6px;
    }
    
    .chat-info p {
        font-size: 14px;
    }
    
    /* Мобильный заголовок чата */
    .chat-header {
        padding: 12px 16px;
        position: relative;
    }
    
    .chat-header-info {
        gap: 16px;
    }
    
    .chat-header h3 {
        font-size: 18px;
    }
    
    .chat-header p {
        font-size: 14px;
    }
    
    /* Мобильные сообщения */
    .messages-container {
        padding: 16px;
        padding-bottom: 100px; /* Дополнительное место для клавиатуры */
        max-height: calc(100vh - 180px);
        -webkit-overflow-scrolling: touch;
        scroll-behavior: smooth;
    }
    
    /* Мобильная кнопка прокрутки */
    .scroll-to-bottom-btn {
        bottom: 120px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
    
    .message-bubble {
        max-width: 85%;
        padding: 12px 16px;
        font-size: 16px; /* Увеличиваем для лучшей читаемости */
    }
    
    .message-text {
        font-size: 16px;
        line-height: 1.4;
    }
    
    .message-time {
        font-size: 12px;
    }
    
    /* Мобильный ввод сообщений */
    .message-input-container {
        padding: 12px 16px;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: var(--light-bg);
        border-top: 1px solid var(--border-color);
        backdrop-filter: blur(10px);
        z-index: 1000;
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
        animation: slideUp 0.3s ease-out;
    }
    
    @keyframes slideUp {
        from {
            transform: translateY(100%);
            opacity: 0;
        }
        to {
            transform: translateY(0);
            opacity: 1;
        }
    }
    
    /* Анимация привлечения внимания к полю ввода */
    .message-form textarea:not(:focus) {
        animation: pulse 2s infinite;
    }
    
    @keyframes pulse {
        0% {
            border-color: var(--border-color);
        }
        50% {
            border-color: var(--primary-color);
        }
        100% {
            border-color: var(--border-color);
        }
    }
    
    .message-form {
        gap: 8px;
        align-items: center;
    }
    
    .message-form textarea {
        font-size: 16px; /* Предотвращает зум на iOS */
        padding: 12px 16px;
        border-radius: 24px;
        max-height: 100px;
        transition: all 0.3s ease;
    }
    
    .message-form textarea:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 2px rgba(37, 211, 102, 0.2);
        transform: scale(1.02);
    }
    
    .btn-send {
        width: 44px;
        height: 44px;
        flex-shrink: 0;
    }
    
    /* Мобильная авторизация */
    .auth-container {
        padding: 16px;
    }
    
    .auth-box {
        padding: 30px 24px;
        border-radius: 12px;
    }
    
    .auth-header h1 {
        font-size: 28px;
    }
    
    .auth-header p {
        font-size: 16px;
    }
    
    .form-group input,
    .form-group textarea {
        font-size: 16px; /* Предотвращает зум на iOS */
        padding: 16px;
        border-radius: 12px;
    }
    
    .btn {
        padding: 16px 24px;
        font-size: 16px;
        border-radius: 12px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    /* Улучшения для touch */
    .chat-item,
    .btn,
    .message-form textarea {
        -webkit-tap-highlight-color: rgba(37, 211, 102, 0.2);
        tap-highlight-color: rgba(37, 211, 102, 0.2);
    }
    
    /* Безопасная зона для iPhone */
    .message-input-container {
        padding-bottom: calc(12px + env(safe-area-inset-bottom));
    }
    
    .auth-container {
        padding-top: calc(20px + env(safe-area-inset-top));
        padding-bottom: calc(20px + env(safe-area-inset-bottom));
    }
}

/* Очень маленькие экраны */
@media (max-width: 480px) {
    .auth-box {
        padding: 24px 20px;
        margin: 0;
    }
    
    .auth-header h1 {
        font-size: 24px;
    }
    
    .chat-item {
        padding: 16px 12px;
    }
    
    .messages-container {
        padding: 12px;
        padding-bottom: 120px; /* Больше места для поля ввода */
    }
    
    .message-input-container {
        padding: 12px 16px;
        background: var(--light-bg);
        border-top: 2px solid var(--primary-color);
        box-shadow: 0 -4px 15px rgba(0, 0, 0, 0.2);
    }
    
    .message-form textarea {
        padding: 12px 16px;
        font-size: 16px;
        background: var(--dark-bg);
        border: 2px solid var(--primary-color);
        border-radius: 25px;
        min-height: 48px;
    }
    
    .btn-send {
        width: 48px;
        height: 48px;
        background: var(--primary-color);
        border-radius: 50%;
        box-shadow: 0 2px 8px rgba(37, 211, 102, 0.3);
    }
    
    .btn-send:hover {
        transform: scale(1.05);
        box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    }
}

/* Ландшафтная ориентация на мобильных */
@media (max-width: 768px) and (orientation: landscape) {
    .auth-container {
        padding: 10px;
    }
    
    .auth-box {
        padding: 20px;
        max-width: 90%;
    }
    
    .message-input-container {
        position: relative;
        padding-bottom: 12px;
    }
    
    .messages-container {
        padding-bottom: 80px;
    }
}

/* Улучшения для iOS */
@supports (-webkit-touch-callout: none) {
    .message-form textarea {
        font-size: 16px;
        transform: translateZ(0); /* Убирает глюки с фокусом */
    }
    
    .messages-container {
        -webkit-overflow-scrolling: touch;
    }
    
    .chat-list {
        -webkit-overflow-scrolling: touch;
    }
}

/* Анимация загрузки */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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