/* ========================================
   VanillaMail - Ультрасовременный дизайн 2024
   ======================================== */

:root {
    /* Цветовая палитра */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --accent: #ec4899;
    --accent-light: #f472b6;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #06b6d4;
    
    /* Нейтральные цвета */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Фоны */
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --bg-gradient-light: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --bg-card: #ffffff;
    
    /* Тени */
    --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-sm: 0 2px 4px 0 rgb(0 0 0 / 0.06);
    --shadow-md: 0 4px 8px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 8px 16px -4px rgb(0 0 0 / 0.12);
    --shadow-xl: 0 12px 32px -8px rgb(0 0 0 / 0.15);
    --shadow-colored: 0 8px 24px -8px rgb(99 102 241 / 0.35);
    
    /* Радиусы */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
    --radius-2xl: 1.5rem;
    
    /* Шрифты */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

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

body {
    font-family: var(--font-sans);
    background: var(--bg-gradient);
    height: 100vh;
    margin: 0;
    padding: 0;
    color: var(--gray-900);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow: hidden;
}

/* ==========================================
   ФОРМА ВХОДА
   ========================================== */

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.login-container::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(236, 72, 153, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.login-box {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    padding: 3rem 2.5rem;
    width: 100%;
    max-width: 440px;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.logo-icon {
    font-size: 3rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.login-header h1 {
    font-size: 2.25rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.login-header p {
    color: var(--gray-600);
    font-size: 1rem;
    margin-top: 0.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.95rem;
}

.form-group input {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: white;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgb(99 102 241 / 0.1);
}

.login-btn {
    width: 100%;
    padding: 1.125rem 2rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-colored);
    position: relative;
    overflow: hidden;
}

.login-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.login-btn:hover::before {
    left: 100%;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px -8px rgb(99 102 241 / 0.5);
}

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

.login-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.error-message {
    background: #fee;
    color: var(--danger);
    padding: 1rem;
    border-radius: var(--radius-md);
    margin: 1rem 0;
    border-left: 4px solid var(--danger);
    display: none;
}

.login-info {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-200);
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-600);
    font-size: 0.875rem;
}

.info-icon {
    font-size: 1.125rem;
}

/* ==========================================
   ОСНОВНОЙ ИНТЕРФЕЙС
   ========================================== */

.mail-interface {
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--gray-50);
    overflow: hidden;
}

/* Шапка */
.mail-header {
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem 2rem;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 2rem;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
    z-index: 100;
    overflow: hidden;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 2rem;
    min-width: 0;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-logo .logo-icon {
    font-size: 1.75rem;
}

.header-logo h2 {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
}

.user-avatar {
    width: 2.5rem;
    height: 2.5rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    box-shadow: var(--shadow-sm);
}

.user-email {
    color: var(--gray-700);
    font-weight: 600;
    font-size: 0.9rem;
}

.header-center {
    display: flex;
    align-items: center;
    min-width: 0;
    overflow: hidden;
}

.mails-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--gray-50);
    padding: 0.625rem 1rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    flex-wrap: wrap;
    flex: 1 1 auto;
    min-width: 0;
}

.search-container {
    position: relative;
    flex: 1 1 auto;
    min-width: 180px;
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: 1rem;
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    font-size: 0.95rem;
    background: white;
    transition: all 0.3s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgb(99 102 241 / 0.1);
}

.filter-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-left: 0.75rem;
    border-left: 1px solid var(--gray-300);
    flex: 0 0 auto;
}

.filter-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--gray-700);
    user-select: none;
}

.filter-checkbox input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 1.125rem;
    height: 1.125rem;
    border: 2px solid var(--gray-300);
    border-radius: 0.25rem;
    position: relative;
    transition: all 0.2s ease;
    background: white;
}

.filter-checkbox input:checked + .checkmark {
    background: var(--primary);
    border-color: var(--primary);
}

.filter-checkbox input:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
}

.sort-select {
    padding: 0.625rem 2rem 0.625rem 0.875rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    background: white;
    color: var(--gray-700);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.625rem center;
}

.sort-select:focus {
    outline: none;
    border-color: var(--primary);
}

.header-right {
    display: flex;
    gap: 0.75rem;
    min-width: 0;
}

.header-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    background: white;
    color: var(--gray-700);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-xs);
}

.header-btn .btn-icon {
    font-size: 1.125rem;
}

.refresh-btn:hover {
    background: linear-gradient(135deg, var(--success), #059669);
    color: white;
    box-shadow: 0 4px 12px -2px rgb(16 185 129 / 0.4);
    transform: translateY(-2px);
}

.logout-btn:hover {
    background: linear-gradient(135deg, var(--danger), #dc2626);
    color: white;
    box-shadow: 0 4px 12px -2px rgb(239 68 68 / 0.4);
    transform: translateY(-2px);
}

/* Основной контент */
.mail-main {
    display: grid;
    grid-template-columns: 240px 380px 1fr;
    gap: 1rem;
    flex: 1 1 auto;
    padding: 1rem;
    min-height: 0;
    overflow: hidden;
    height: 100%;
}

/* Внутренние грид-элементы должны позволять дочерним блокам скроллиться */
.mail-main > * { min-height: 0; }

/* Сайдбары */
.sidebar {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 0; /* важно для скролла внутренних списков */
}

.sidebar-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(135deg, var(--gray-50), white);
    flex-shrink: 0;
}

.sidebar-header h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--gray-800);
    margin: 0;
}

.folder-count {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 700;
    box-shadow: var(--shadow-xs);
}

/* Папки */
.folders-nav {
    flex: 1;
    padding: 0.75rem;
    overflow-y: auto;
    overflow-x: hidden;
    min-height: 0;
}

.folders-list {
    list-style: none;
}

.folder-item {
    margin-bottom: 0.375rem;
}

.folder-btn {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    border: none;
    background: transparent;
    color: var(--gray-700);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    border-radius: var(--radius-md);
}

.folder-btn:hover {
    background: var(--gray-50);
    color: var(--gray-900);
}

.folder-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    box-shadow: var(--shadow-colored);
}

.folder-icon {
    font-size: 1.125rem;
}

.folder-name {
    flex: 1;
}

.folder-badge {
    background: rgba(255, 255, 255, 0.25);
    color: inherit;
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
}

/* Тулбар пакетных операций */
.batch-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    animation: slideDown 0.3s ease;
    flex-shrink: 0;
}

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

.batch-info {
    font-weight: 700;
    font-size: 0.9375rem;
}

.batch-actions {
    display: flex;
    gap: 0.625rem;
}

.batch-btn {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 0.875rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.batch-btn-danger {
    background: rgba(255, 255, 255, 0.95);
    color: var(--danger);
}

.batch-btn-danger:hover {
    background: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px -2px rgba(0, 0, 0, 0.2);
}

.batch-btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.batch-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Выбрать все */
.select-all-container {
    padding: 1rem 1.25rem;
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
    flex-shrink: 0;
}

.select-all-checkbox {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--gray-700);
    font-weight: 600;
    user-select: none;
}

.select-all-checkbox input[type="checkbox"] {
    display: none;
}

.select-all-checkbox .checkmark {
    width: 1.125rem;
    height: 1.125rem;
    border: 2px solid var(--gray-300);
    border-radius: 0.25rem;
    position: relative;
    transition: all 0.2s ease;
    background: white;
}

.select-all-checkbox input:checked + .checkmark {
    background: var(--primary);
    border-color: var(--primary);
}

.select-all-checkbox input:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
}

/* Список писем */
.mails-list {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0.75rem;
    min-height: 0;
}

.no-mails {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--gray-400);
    font-size: 0.875rem;
}

/* Элемент письма */
.mail-item {
    background: white;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    padding: 1rem;
    margin-bottom: 0.625rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.mail-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

/* Активный элемент письма: светлая тема по умолчанию — светлый фон и тёмный текст */
.mail-item.active {
    background: linear-gradient(135deg, #eef2ff, #e0e7ff);
    color: var(--gray-900);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.mail-item.active .mail-subject,
.mail-item.active .mail-sender,
.mail-item.active .mail-preview,
.mail-item.active .mail-date {
    color: var(--gray-900) !important;
}

/* В тёмной теме используем яркий градиент и белый текст */
.theme-dark .mail-item.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    box-shadow: var(--shadow-colored);
    border-color: transparent;
}

.theme-dark .mail-item.active .mail-subject,
.theme-dark .mail-item.active .mail-sender,
.theme-dark .mail-item.active .mail-preview,
.theme-dark .mail-item.active .mail-date {
    color: white !important;
}

.mail-item.selected {
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    border-color: var(--primary);
}

.mail-item.read {
    background: var(--gray-50);
}

.mail-item.read .mail-subject {
    color: var(--gray-600);
    font-weight: 500;
}

.mail-item.unseen {
    background: linear-gradient(135deg, white, #fafbff);
    border-color: var(--primary);
    border-left-width: 4px;
}

.mail-item.unseen .mail-subject {
    font-weight: 700;
    color: var(--gray-900);
}

.mail-item.unseen .mail-subject::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    margin-right: 0.5rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        box-shadow: 0 0 0 0 var(--primary);
    }
    50% {
        opacity: 0.8;
        box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
    }
}

/* Чекбокс письма */
.mail-checkbox-label {
    flex-shrink: 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    padding: 0.25rem;
}

.mail-checkbox {
    display: none;
}

.mail-checkmark {
    width: 1.125rem;
    height: 1.125rem;
    border: 2px solid var(--gray-300);
    border-radius: 0.25rem;
    position: relative;
    transition: all 0.2s ease;
    background: white;
}

.mail-checkbox:checked + .mail-checkmark {
    background: var(--primary);
    border-color: var(--primary);
}

.mail-checkbox:checked + .mail-checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
}

.mail-checkbox-label:hover .mail-checkmark {
    border-color: var(--primary);
}

/* Контент письма в списке */
.mail-content-wrapper {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    overflow: hidden;
}

.mail-item .mail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    min-width: 0;
}

.mail-sender {
    font-size: 0.875rem;
    color: var(--gray-600);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
    min-width: 0;
}

.mail-date {
    font-size: 0.75rem;
    color: var(--gray-500);
    white-space: nowrap;
    font-weight: 500;
    flex-shrink: 0;
}

.mail-subject {
    font-weight: 600;
    color: var(--gray-800);
    font-size: 0.9375rem;
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* Просмотр письма */
.mail-content {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    height: 100%;
    min-height: 0;
}

.mail-view {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    min-height: 0;
}

.no-mail-selected {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--gray-400);
}

.no-mail-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    opacity: 0.5;
}

.no-mail-selected h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--gray-600);
}

.no-mail-selected p {
    font-size: 1rem;
    color: var(--gray-500);
}

.mail-content-header {
    background: linear-gradient(135deg, var(--gray-50), white);
    border-bottom: 1px solid var(--gray-200);
    padding: 1.5rem 2rem;
}

.mail-header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mail-header-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}

.mail-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--gray-500);
    font-size: 0.875rem;
}

.delete-mail-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--danger), #dc2626);
    color: white;
    border: none;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px -2px rgb(239 68 68 / 0.3);
}

.delete-mail-btn:hover {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -4px rgb(239 68 68 / 0.4);
}

.mail-body {
    padding: 2rem;
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--gray-800);
}

/* Стили для HTML контента */
.mail-html-content {
    font-family: inherit;
    line-height: 1.7;
}

.mail-html-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
}

.mail-html-content a {
    color: var(--primary);
    text-decoration: none;
    border-bottom: 1px solid var(--primary-light);
}

.mail-html-content a:hover {
    color: var(--primary-dark);
}

/* Footer */
.mail-footer {
    background: var(--gray-800);
    color: white;
    padding: 1rem 2rem;
    flex-shrink: 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.footer-left {
    display: flex;
    gap: 2rem;
}

.footer-info {
    display: flex;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.footer-label {
    color: var(--gray-400);
}

.footer-value {
    font-weight: 600;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-link {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s;
}

.footer-link:hover {
    color: white;
}

/* Skeleton загрузки */
.skeleton-list {
    padding: 0.75rem;
}

.skeleton-item {
    height: 100px;
    background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-50) 50%, var(--gray-100) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-lg);
    margin-bottom: 0.625rem;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Уведомления */
.notification {
    position: fixed;
    top: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    font-weight: 600;
    font-size: 0.9375rem;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    max-width: 400px;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.notification.show {
    opacity: 1;
    transform: translateX(0);
}

.notification-success {
    background: var(--success);
    color: white;
}

.notification-error {
    background: var(--danger);
    color: white;
}

.notification-info {
    background: var(--info);
    color: white;
}

/* Адаптивность */
@media (max-width: 1200px) {
    .mail-main {
        grid-template-columns: 220px 340px 1fr;
    }
}

@media (max-width: 1024px) {
    .mail-main {
        grid-template-columns: 200px 300px 1fr;
    }
    
    .search-input {
        width: 220px;
    }
    
    .search-input:focus {
        width: 260px;
    }
}

@media (max-width: 768px) {
    .mail-header {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .header-left,
    .header-center,
    .header-right {
        justify-content: center;
    }
    
    .mails-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-input {
        width: 100%;
    }
    
    .filter-controls {
        border-left: none;
        border-top: 1px solid var(--gray-300);
        padding-left: 0;
        padding-top: 0.75rem;
        flex-direction: column;
        align-items: stretch;
    }
    
    .mail-main {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .sidebar {
        max-height: 400px;
    }
    
    .notification {
        top: 1rem;
        right: 1rem;
        left: 1rem;
        max-width: none;
    }
}

@media (max-width: 480px) {
    .login-box {
        padding: 2rem 1.5rem;
    }
    
    .header-btn span:not(.btn-icon) {
        display: none;
    }
    
    .batch-btn span:not(.btn-icon) {
        display: none;
    }
}


/* ==========================================
   ТЁМНАЯ ТЕМА И ПЛОТНОСТЬ ИНТЕРФЕЙСА
   ========================================== */

/* Переменные для тёмной темы (через переопределение) */
.theme-dark {
    /* Базовые оттенки для тёмной темы */
    --gray-50: #0b1220;
    --gray-100: #111827;
    --gray-200: #1f2937;
    --gray-300: #253248;
    --gray-400: #6b7280;
    --gray-500: #94a3b8;
    --gray-600: #a5b4fc;
    --gray-700: #cbd5e1;
    --gray-800: #e2e8f0;
    --gray-900: #f8fafc;
    --bg-card: #0f172a;
}

/* Фон страницы в тёмной теме */
body.theme-dark {
    background: linear-gradient(135deg, #0b1220 0%, #111827 100%);
    color: var(--gray-800);
}

/* Поверхности/карточки и основные блоки */
.theme-dark .mail-interface,
.theme-dark .sidebar,
.theme-dark .mail-header,
.theme-dark .mail-content,
.theme-dark .mails-controls,
.theme-dark .select-all-container,
.theme-dark .batch-toolbar,
.theme-dark .mail-footer {
    background: var(--bg-card);
    color: var(--gray-800);
    border-color: var(--gray-300);
}

/* Шапка */
.theme-dark .mail-header {
    border-bottom: 1px solid var(--gray-300);
}

/* Кнопки в шапке */
.theme-dark .header-btn {
    background: #0b1220;
    color: var(--gray-700);
    border-color: transparent;
}

.theme-dark .header-btn:hover {
    color: white;
}

/* Поля ввода и селекты */
.theme-dark .search-input,
.theme-dark .sort-select {
    background: #0b1220;
    color: var(--gray-700);
    border-color: var(--gray-300);
}

.theme-dark .search-input::placeholder {
    color: var(--gray-400);
}

.theme-dark .search-icon { color: var(--gray-400); }

/* Папки */
.theme-dark .folder-btn { color: var(--gray-700); }
.theme-dark .folder-btn:hover {
    background: #0b1220;
    color: var(--gray-800);
}

/* Список писем */
.theme-dark .mail-item {
    background: #0b1220;
    color: var(--gray-700);
    border-color: transparent;
}

.theme-dark .mail-item:hover { border-color: var(--primary); }
.theme-dark .mail-item.read { background: #0a0f1c; }
.theme-dark .mail-item.unseen {
    background: linear-gradient(135deg, #0b1220, #0f172a);
    border-left-color: var(--primary);
}

.theme-dark .mail-subject { color: var(--gray-800); }
.theme-dark .mail-sender { color: var(--gray-600); }
.theme-dark .mail-date { color: var(--gray-500); }

/* Просмотр письма */
.theme-dark .mail-content-header { background: #0b1220; border-bottom: 1px solid var(--gray-300); }
.theme-dark .mail-body { color: var(--gray-800); }
.theme-dark .mail-html-content a { border-bottom-color: var(--primary); }

/* Чекбоксы */
.theme-dark .checkmark,
.theme-dark .mail-checkmark { background: #0b1220; border-color: var(--gray-300); }
.theme-dark .filter-checkbox input:checked + .checkmark,
.theme-dark .mail-checkbox:checked + .mail-checkmark { background: var(--primary); border-color: var(--primary); }

/* Тулбар пакетных операций поверх тёмной поверхности */
.theme-dark .batch-toolbar { color: white; }

/* Подвал */
.theme-dark .mail-footer { background: #0b1220; color: var(--gray-700); }
.theme-dark .footer-link { color: var(--gray-500); }
.theme-dark .footer-link:hover { color: var(--gray-700); }

/* Уведомления */
.theme-dark .notification { border-color: rgba(0,0,0,0.3); }

/* Фокусные стили для доступности */
button:focus-visible,
select:focus-visible,
input:focus-visible,
.folder-btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgb(99 102 241 / 0.35);
}

.theme-dark button:focus-visible,
.theme-dark select:focus-visible,
.theme-dark input:focus-visible,
.theme-dark .folder-btn:focus-visible {
    box-shadow: 0 0 0 3px rgb(129 140 248 / 0.45);
}

/* Кастомные скроллбары */
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 8px; }
*::-webkit-scrollbar-track { background: var(--gray-100); }

.theme-dark *::-webkit-scrollbar-thumb { background: #253248; }
.theme-dark *::-webkit-scrollbar-track { background: #0b1220; }

/* Компактная плотность интерфейса */
body.density-compact .mail-header { padding: 0.5rem 1rem; }
body.density-compact .mails-controls { padding: 0.5rem 0.75rem; gap: 0.5rem; }
body.density-compact .search-input { padding: 0.5rem 0.75rem 0.5rem 2.25rem; }
body.density-compact .sort-select { padding: 0.5rem 1.5rem 0.5rem 0.75rem; }
body.density-compact .header-btn { padding: 0.5rem 0.875rem; }
body.density-compact .sidebar-header { padding: 0.75rem 1rem; }
body.density-compact .mails-list { padding: 0.5rem; }
body.density-compact .mail-item { padding: 0.625rem 0.75rem; gap: 0.5rem; }
body.density-compact .mail-content-wrapper { gap: 0.25rem; }
body.density-compact .mail-item .mail-header { gap: 0.5rem; }
body.density-compact .mail-subject { font-size: 0.875rem; -webkit-line-clamp: 1; }
body.density-compact .mail-sender { font-size: 0.8125rem; }
body.density-compact .mail-date { font-size: 0.6875rem; }
body.density-compact .mail-body { padding: 1rem; }