/* Telegram-style Chat Application */
/* Адаптивный дизайн для мобильных и десктопных устройств */

:root {
    /* Telegram цвета */
    --tg-bg-primary: #1a1625;
    --tg-bg-secondary: #2a1f3d;
    --tg-bg-tertiary: #4c1d95;
    --tg-bg-chat: #141020;
    --tg-bg-message-out: #4c1d95;
    --tg-bg-message-in: #251a35;
    --tg-bg-input: #2a1f3d;
    --tg-bg-sidebar: #1a1625;
    
    /* Текст */
    --tg-text-primary: #ffffff;
    --tg-text-secondary: #aaaaaa;
    --tg-text-muted: #707579;
    --tg-text-accent: #a855f7;
    --tg-text-online: #4dcd5e;
    
    /* Акценты */
    --tg-accent: #8b5cf6;
    --tg-accent-hover: #7c3aed;
    --tg-accent-light: rgba(139, 92, 246, 0.1);
    
    /* Премиум */
    --premium-gold: #c084fc;
    --premium-gradient: linear-gradient(45deg, #c084fc, #a855f7, #8b5cf6);
    
    /* Границы */
    --tg-border: rgba(139, 92, 246, 0.15);
    --tg-border-light: rgba(139, 92, 246, 0.08);
    
    /* Тени */
    --tg-shadow: 0 2px 8px rgba(26, 22, 37, 0.4);
    --tg-shadow-light: 0 1px 3px rgba(26, 22, 37, 0.3);
    
    /* Размеры */
    --sidebar-width: 420px;
    --header-height: 60px;
    --input-height: 52px;
    --message-padding: 12px;
    --border-radius: 12px;
    --border-radius-small: 8px;
    
    /* Анимации */
    --animation-fast: 0.15s ease;
    --animation-normal: 0.25s ease;
    --animation-slow: 0.35s ease;
    --animation-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Глобальные анимации - более селективный подход */
button,
a,
.chat-item,
.message-bubble,
.input-button,
.user-avatar,
.chat-avatar {
    transition: all var(--animation-normal);
}

/* Быстрые анимации для интерактивных элементов */
.search-input,
.form-input,
.message-input {
    transition: background-color var(--animation-fast), 
                border-color var(--animation-fast),
                transform var(--animation-fast);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    background: var(--tg-bg-primary);
    color: var(--tg-text-primary);
    height: 100vh;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: 'kern' 1;
    text-rendering: optimizeLegibility;
}

/* Основной контейнер */
.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Боковая панель (список чатов) */
.sidebar {
    width: var(--sidebar-width);
    background: var(--tg-bg-sidebar);
    border-right: 1px solid var(--tg-border);
    display: flex;
    flex-direction: column;
    min-width: 320px;
    transition: transform var(--animation-normal);
}

.sidebar-header {
    height: var(--header-height);
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--tg-border);
    background: var(--tg-bg-secondary);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
}

.logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.sidebar-title {
    font-size: 18px;
    font-weight: 500;
    color: var(--tg-text-primary);
    margin: 0;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--tg-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.user-avatar:hover {
    background: var(--tg-accent-hover);
}

.user-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

/* Поиск */
.search-container {
    padding: 12px 20px;
    border-bottom: 1px solid var(--tg-border);
}

.search-input {
    width: 100%;
    height: 40px;
    background: var(--tg-bg-input);
    border: none;
    border-radius: 20px;
    padding: 0 16px;
    color: var(--tg-text-primary);
    font-size: 14px;
    outline: none;
    transition: all 0.2s ease;
}

.search-input::placeholder {
    color: var(--tg-text-muted);
}

.search-input:focus {
    background: var(--tg-bg-tertiary);
}

/* Список чатов */
.chat-list {
    flex: 1;
    overflow-y: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.chat-list::-webkit-scrollbar {
    display: none;
}

.chat-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border-bottom: 1px solid var(--tg-border-light);
    text-decoration: none;
    color: inherit;
    transform: translateX(0);
}

.chat-item:hover {
    background: var(--tg-bg-secondary);
    transform: translateX(6px);
}

.chat-item.active {
    background: var(--tg-bg-tertiary);
    transform: translateX(10px);
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.2);
}

.chat-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--tg-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 500;
    font-size: 16px;
    margin-right: 12px;
    flex-shrink: 0;
    cursor: pointer;
    transition: all var(--animation-normal);
    transform: scale(1);
}

.chat-avatar:hover {
    opacity: 0.8;
    transform: scale(1.05);
}

.chat-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.chat-info {
    flex: 1;
    min-width: 0;
}

.chat-name {
    font-size: 16px;
    font-weight: 500;
    color: var(--tg-text-primary);
    margin-bottom: 2px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.chat-last-message {
    font-size: 14px;
    color: var(--tg-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.chat-time {
    font-size: 12px;
    color: var(--tg-text-muted);
}

.chat-unread {
    background: var(--tg-accent);
    color: white;
    border-radius: 10px;
    padding: 2px 6px;
    font-size: 12px;
    font-weight: 500;
    min-width: 18px;
    text-align: center;
}

/* Основная область чата */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--tg-bg-chat);
}

.chat-header {
    height: var(--header-height);
    background: var(--tg-bg-secondary);
    border-bottom: 1px solid var(--tg-border);
    display: flex;
    align-items: center;
    padding: 0 20px;
    gap: 12px;
}

.back-button {
    display: none;
    width: 32px;
    height: 32px;
    border: none;
    background: none;
    color: var(--tg-accent);
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s ease;
}

.back-button:hover {
    background: var(--tg-accent-light);
}

.chat-header-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--tg-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.chat-header-avatar:hover {
    opacity: 0.8;
}

.chat-header-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.chat-header-info {
    flex: 1;
}

.chat-header-name {
    font-size: 16px;
    font-weight: 500;
    color: var(--tg-text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.chat-header-status {
    font-size: 13px;
    color: var(--tg-text-secondary);
    margin-top: 1px;
}

/* Сообщения */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    scrollbar-width: thin;
    scrollbar-color: var(--tg-border) transparent;
}

.messages-container::-webkit-scrollbar {
    width: 6px;
}

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

.messages-container::-webkit-scrollbar-thumb {
    background: var(--tg-border);
    border-radius: 3px;
}

.message {
    display: flex;
    margin-bottom: 8px;
    max-width: 70%;
    animation: messageSlideIn 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    opacity: 0;
    animation-fill-mode: forwards;
    transform: translateY(20px);
}

@keyframes messageSlideIn {
    0% {
        opacity: 0;
        transform: translateY(15px) scale(0.98);
    }
    70% {
        opacity: 0.9;
        transform: translateY(-1px) scale(1.01);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.message.outgoing {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message.incoming {
    align-self: flex-start;
}

.message-bubble {
    background: var(--tg-bg-message-in);
    border-radius: var(--border-radius);
    padding: var(--message-padding);
    position: relative;
    word-wrap: break-word;
    max-width: 100%;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    transform: scale(1);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.message-bubble:hover {
    transform: scale(1.01);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.message.outgoing .message-bubble {
    background: var(--tg-bg-message-out);
    border-bottom-right-radius: 4px;
}

.message.incoming .message-bubble {
    border-bottom-left-radius: 4px;
}

.message-content {
    font-size: 15px;
    line-height: 1.4;
    color: var(--tg-text-primary);
    margin-bottom: 4px;
}

.message-time {
    font-size: 12px;
    color: var(--tg-text-muted);
    text-align: right;
    margin-top: 4px;
}

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

/* Поле ввода */
.input-container {
    padding: 16px 20px;
    background: var(--tg-bg-secondary);
    border-top: 1px solid var(--tg-border);
}

.input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    background: var(--tg-bg-input);
    border-radius: 24px;
    padding: 8px 12px;
    min-height: var(--input-height);
}

.message-input {
    flex: 1;
    border: none;
    background: none;
    color: var(--tg-text-primary);
    font-size: 15px;
    line-height: 1.4;
    resize: none;
    outline: none;
    max-height: 120px;
    min-height: 20px;
    padding: 8px 0;
    transition: all var(--animation-fast);
}

.message-input:focus {
    transform: scale(1.01);
}

.message-input::placeholder {
    color: var(--tg-text-muted);
}

.input-actions {
    display: flex;
    align-items: center;
    gap: 4px;
}

.input-button {
    width: 32px;
    height: 32px;
    border: none;
    background: none;
    color: var(--tg-text-muted);
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transform: scale(1);
}

.input-button:hover {
    background: var(--tg-accent-light);
    color: var(--tg-accent);
    transform: scale(1.1);
}

.input-button:active {
    transform: scale(0.9);
    transition: transform 0.1s ease;
}

.send-button {
    background: var(--tg-accent);
    color: white;
}

.send-button:hover {
    background: var(--tg-accent-hover);
    transform: scale(1.15);
}

.send-button:active {
    transform: scale(0.95);
    transition: transform 0.1s ease;
}

/* Премиум стили */
.premium-crown {
    color: var(--premium-gold);
    font-size: 14px;
    margin-right: 2px;
    animation: crown-glow 2s ease-in-out infinite alternate;
}

@keyframes crown-glow {
    0% { text-shadow: 0 0 5px var(--premium-gold); }
    100% { text-shadow: 0 0 10px var(--premium-gold), 0 0 15px var(--premium-gold); }
}

.premium-username {
    background: var(--premium-gradient);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: premium-shine 3s ease-in-out infinite;
    font-weight: 500;
}

@keyframes premium-shine {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Адаптивность для мобильных устройств */
@media (max-width: 768px) {
    .app-container {
        position: relative;
    }
    
    .sidebar {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 10;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .sidebar-logo {
        gap: 8px;
    }
    
    .logo-icon {
        width: 28px;
        height: 28px;
    }
    
    .sidebar-title {
        font-size: 16px;
    }
    
    .chat-main {
        width: 100%;
    }
    
    .back-button {
        display: flex;
    }
    
    .message {
        max-width: 85%;
        /* Упрощенная анимация для мобильных */
        animation-duration: 0.2s;
    }
    
    /* Быстрая анимация для мобильных */
    @keyframes messageSlideIn {
        0% {
            opacity: 0;
            transform: translateY(10px);
        }
        100% {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .sidebar-header {
        padding: 0 16px;
    }
    
    .search-container {
        padding: 12px 16px;
    }
    
    .chat-item {
        padding: 12px 16px;
    }
    
    .chat-header {
        padding: 0 16px;
    }
    
    .messages-container {
        padding: 16px;
    }
    
    .input-container {
        padding: 12px 16px;
    }
}

/* Состояния загрузки */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: var(--tg-text-muted);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--tg-border);
    border-top: 2px solid var(--tg-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 8px;
}

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

/* Пустое состояние */
.empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--tg-text-muted);
    text-align: center;
    padding: 40px;
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state-title {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--tg-text-secondary);
}

.empty-state-description {
    font-size: 14px;
    line-height: 1.4;
}

/* Логин страница */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--tg-bg-primary);
    padding: 20px;
}

.login-card {
    background: var(--tg-bg-secondary);
    border-radius: var(--border-radius);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--tg-shadow);
}

.login-title {
    font-size: 24px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 8px;
    color: var(--tg-text-primary);
}

.login-subtitle {
    font-size: 14px;
    color: var(--tg-text-secondary);
    text-align: center;
    margin-bottom: 32px;
}

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

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

.form-input {
    width: 100%;
    height: 48px;
    background: var(--tg-bg-input);
    border: 1px solid var(--tg-border);
    border-radius: var(--border-radius-small);
    padding: 0 16px;
    color: var(--tg-text-primary);
    font-size: 15px;
    outline: none;
    transition: all 0.2s ease;
}

.form-input:focus {
    border-color: var(--tg-accent);
    background: var(--tg-bg-tertiary);
}

.form-input::placeholder {
    color: var(--tg-text-muted);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius-small);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    gap: 8px;
}

.btn-primary {
    background: var(--tg-accent);
    color: white;
    width: 100%;
    height: 48px;
}

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

.btn-secondary {
    background: var(--tg-bg-input);
    color: var(--tg-text-primary);
    border: 1px solid var(--tg-border);
}

.btn-secondary:hover {
    background: var(--tg-bg-tertiary);
}

/* Админ панель */
.admin-container {
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.admin-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--tg-border);
}

.admin-title {
    font-size: 28px;
    font-weight: 600;
    color: var(--tg-text-primary);
}

.admin-actions {
    display: flex;
    gap: 12px;
}

.users-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    flex: 1;
    overflow-y: auto;
    padding-right: 8px;
}

.users-grid::-webkit-scrollbar {
    width: 6px;
}

.users-grid::-webkit-scrollbar-track {
    background: var(--tg-bg-primary);
    border-radius: 3px;
}

.users-grid::-webkit-scrollbar-thumb {
    background: var(--tg-border);
    border-radius: 3px;
}

.users-grid::-webkit-scrollbar-thumb:hover {
    background: var(--tg-accent);
}

.user-card {
    background: var(--tg-bg-secondary);
    border-radius: var(--border-radius);
    padding: 20px;
    border: 1px solid var(--tg-border);
}

.user-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.user-card-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--tg-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 500;
    font-size: 16px;
    /* НЕ делаем кликабельным в админке */
    cursor: default;
}

.user-card-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.user-card-info {
    flex: 1;
}

.user-card-name {
    font-size: 16px;
    font-weight: 500;
    color: var(--tg-text-primary);
    margin-bottom: 2px;
}

.user-card-username {
    font-size: 14px;
    color: var(--tg-text-secondary);
}

.user-card-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 16px;
}

.user-detail {
    font-size: 13px;
}

.user-detail-label {
    color: var(--tg-text-muted);
    margin-bottom: 2px;
}

.user-detail-value {
    color: var(--tg-text-primary);
    font-weight: 500;
}

.user-card-actions {
    display: flex;
    gap: 8px;
}

.btn-small {
    padding: 6px 12px;
    font-size: 13px;
    height: auto;
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-danger:hover {
    background: #c82333;
}

.btn-success {
    background: #28a745;
    color: white;
}

.btn-success:hover {
    background: #218838;
}

/* Уведомления */
.flash-messages {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.flash-message {
    background: var(--tg-bg-secondary);
    border: 1px solid var(--tg-border);
    border-radius: var(--border-radius-small);
    padding: 12px 16px;
    margin-bottom: 8px;
    color: var(--tg-text-primary);
    box-shadow: var(--tg-shadow);
    animation: slideIn 0.3s ease;
}

.flash-message.error {
    border-color: #dc3545;
    background: rgba(220, 53, 69, 0.1);
}

.flash-message.success {
    border-color: #28a745;
    background: rgba(40, 167, 69, 0.1);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Утилиты */
.text-center { text-align: center; }
.text-muted { color: var(--tg-text-muted); }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }