/* ============================================
   QuorVPN — ДИЗАЙН (Белый + Серебро / Чёрный + Серебро)
   ============================================ */

/* --- CSS Variables --- */
:root,
html[data-theme="dark"] {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-card: #1a1a1a;
    --bg-card-hover: #222222;
    --border-color: #3a3a3a;
    --border-light: #4a4a4a;
    --text-primary: #e8e8e8;
    --text-secondary: #a8a8a8;
    --text-muted: #6a6a6a;
    --accent: #c0c0c0;
    --accent-hover: #d8d8d8;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.6);
    --sidebar-bg: #0d0d0d;
    --sidebar-border: #2a2a2a;
    --input-bg: #1a1a1a;
    --input-border: #3a3a3a;
    --input-focus: #888888;
    --scrollbar-track: #1a1a1a;
    --scrollbar-thumb: #444444;
    --badge-bg: #2a2a2a;
    --badge-text: #cccccc;
}

html[data-theme="light"] {
    --bg-primary: #f8f8f8;
    --bg-secondary: #f0f0f0;
    --bg-card: #ffffff;
    --bg-card-hover: #f5f5f5;
    --border-color: #d0d0d0;
    --border-light: #e0e0e0;
    --text-primary: #1a1a1a;
    --text-secondary: #5a5a5a;
    --text-muted: #9a9a9a;
    --accent: #888888;
    --accent-hover: #666666;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    --sidebar-bg: #f5f5f5;
    --sidebar-border: #d8d8d8;
    --input-bg: #f5f5f5;
    --input-border: #d0d0d0;
    --input-focus: #999999;
    --scrollbar-track: #e8e8e8;
    --scrollbar-thumb: #b0b0b0;
    --badge-bg: #e8e8e8;
    --badge-text: #444444;
}

/* --- Reset & Base --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow: hidden;
    transition: background 0.3s ease, color 0.3s ease;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* --- Glass Card (Серебряная окантовка) --- */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 32px rgba(192, 192, 192, 0.08);
}

/* --- App Layout --- */
.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* --- Sidebar --- */
.sidebar {
    width: 240px;
    min-width: 240px;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    display: flex;
    flex-direction: column;
    padding: 20px 16px;
    transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease;
    z-index: 40;
    overflow-y: auto;
}

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

.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: 8px;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    width: 100%;
    text-align: left;
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.nav-item:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.nav-item.active {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--accent);
    box-shadow: 0 0 20px rgba(192, 192, 192, 0.05);
}

.nav-item .material-icons {
    font-size: 22px;
}

.sidebar-footer {
    border-top: 1px solid var(--sidebar-border);
    padding-top: 16px;
    margin-top: auto;
}

/* --- Main Content --- */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg-primary);
    transition: background 0.3s ease;
}

.main-header {
    padding: 16px 32px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.content-area {
    flex: 1;
    padding: 24px 32px;
    overflow-y: auto;
    overflow-x: hidden;
}

/* --- Theme Toggle --- */
.theme-toggle {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--accent);
}

.theme-toggle .material-icons {
    font-size: 22px;
}

/* --- Cards --- */
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px 24px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.stat-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 32px rgba(192, 192, 192, 0.06);
}

.stat-card .label {
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-card .value {
    font-size: 32px;
    font-weight: 700;
    margin-top: 4px;
}

.stat-card .fake-badge {
    background: var(--badge-bg);
    color: var(--badge-text);
    font-size: 11px;
    padding: 2px 10px;
    border-radius: 20px;
    font-weight: 600;
    margin-left: 8px;
    border: 1px solid var(--border-color);
}

/* --- Tables --- */
.table-container {
    overflow-x: auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.table-container table {
    width: 100%;
    border-collapse: collapse;
}

.table-container th {
    padding: 12px 16px;
    text-align: left;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}

.table-container td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 14px;
}

.table-container tr:last-child td {
    border-bottom: none;
}

.table-container tr:hover td {
    background: var(--bg-card-hover);
}

/* --- Buttons --- */
.btn {
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-card);
    color: var(--text-primary);
}

.btn:hover {
    border-color: var(--accent);
    background: var(--bg-card-hover);
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
}

.btn-primary:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--bg-primary);
}

.btn-secondary {
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

.btn-danger {
    border-color: #cc4444;
    color: #cc4444;
}

.btn-danger:hover {
    background: #cc4444;
    color: #ffffff;
    border-color: #cc4444;
}

.btn-success {
    border-color: #44aa66;
    color: #44aa66;
}

.btn-success:hover {
    background: #44aa66;
    color: #ffffff;
    border-color: #44aa66;
}

.btn-warning {
    border-color: #ddaa44;
    color: #ddaa44;
}

.btn-warning:hover {
    background: #ddaa44;
    color: #ffffff;
    border-color: #ddaa44;
}

.btn-sm {
    padding: 4px 12px;
    font-size: 12px;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* --- Form Elements --- */
.form-input {
    width: 100%;
    padding: 10px 14px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    transition: all 0.2s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(192, 192, 192, 0.08);
}

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

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.form-group {
    margin-bottom: 16px;
}

/* --- Tabs --- */
.tab-header {
    display: flex;
    gap: 4px;
    margin-bottom: 20px;
    background: var(--bg-card);
    padding: 4px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.tab-btn {
    padding: 8px 20px;
    border-radius: 6px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.tab-btn.active {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--accent);
}

/* --- Badges --- */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    border: 1px solid var(--border-color);
    background: var(--badge-bg);
    color: var(--badge-text);
}

.badge-free { border-color: #8888cc; color: #8888cc; }
.badge-basic { border-color: #44aa66; color: #44aa66; }
.badge-plus { border-color: #ddaa44; color: #ddaa44; }
.badge-premium { border-color: #cc66aa; color: #cc66aa; }
.badge-pending { border-color: #ddaa44; color: #ddaa44; }
.badge-confirmed { border-color: #44aa66; color: #44aa66; }
.badge-rejected { border-color: #cc4444; color: #cc4444; }

/* --- Toast --- */
.toast {
    padding: 12px 20px;
    border-radius: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    color: var(--text-primary);
    font-size: 14px;
    animation: slideUp 0.3s ease;
    min-width: 280px;
}

.toast-success { border-color: #44aa66; }
.toast-error { border-color: #cc4444; }
.toast-warning { border-color: #ddaa44; }

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        transform: translateX(-100%);
        width: 280px;
        min-width: 280px;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-header {
        padding: 12px 16px;
    }

    .content-area {
        padding: 16px;
    }

    .stat-card .value {
        font-size: 24px;
    }

    .sidebar-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 35;
        display: none;
    }

    .sidebar-overlay.active {
        display: block;
    }
}

@media (max-width: 480px) {
    .stat-card {
        padding: 16px;
    }
    .stat-card .value {
        font-size: 20px;
    }
    .table-container {
        font-size: 12px;
    }
    .table-container th,
    .table-container td {
        padding: 8px 12px;
    }
}