/* --- THEME VARIABLES --- */
:root {
    /* Light Theme */
    --bg-body: #f6f8fa;
    --bg-card: #ffffff;
    --bg-element: #f6f8fa;
    --bg-element-hover: #f1f3f5;
    --bg-input: #ffffff;

    --text-heading: #24292f;
    --text-main: #57606a;
    --text-muted: #8c959f;

    --border-color: #d0d7de;
    --border-subtle: #e9ecef;

    --badge-border-active: #92bea5;
    --badge-border-disconnected: #d47e80;

    --accent-color: #0969da;
    --success-bg: rgba(39, 174, 96, 0.15);
    --success-text: #1a7f37;
    --danger-bg: rgba(231, 76, 60, 0.15);
    --danger-text: #cf222e;
    --warning-bg: rgba(255, 193, 7, 0.15);
    --warning-text: #9a6700;

    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    --toggle-off-bg: #e9ecef;
    --toggle-off-border: #d0d7de;
}

/* Dark Theme (Soft & Low Contrast) */
[data-theme="dark"] {
    --bg-body: #0d1117;
    --bg-card: #161b22;
    --bg-element: #21262d;

    /* Используем прозрачность для hover, чтобы текст не сливался */
    --bg-element-hover: rgba(255, 255, 255, 0.03);

    --bg-input: #0d1117;

    --text-heading: #e6edf3;
    /* Светлее для заголовков */
    --text-main: #8b949e;
    /* Мягкий серый для текста */
    --text-muted: #6e7681;

    /* ОЧЕНЬ мягкие границы (8% прозрачности белого) */
    --border-color: rgba(240, 246, 252, 0.1);
    --border-subtle: rgba(240, 246, 252, 0.05);

    --badge-border-active: #3e6f40;
    --badge-border-disconnected: #793837;

    --accent-color: #58a6ff;
    --success-bg: rgba(35, 134, 54, 0.15);
    --success-text: #3fb950;
    --danger-bg: rgba(218, 54, 51, 0.15);
    --danger-text: #f85149;
    --warning-bg: rgba(210, 153, 34, 0.15);
    --warning-text: #d29922;

    --shadow: none;

    --toggle-off-bg: rgba(110, 118, 129, 0.1);
    --toggle-off-border: rgba(240, 246, 252, 0.1);
}

body {
    background-color: var(--bg-body);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    font-size: 0.9rem;
    color: var(--text-main);
    padding: 20px 0;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 95%;
    margin: 0 auto;
}

@media (min-width: 1400px) {
    .container {
        max-width: 75%;
    }
}

/* Layout Elements */
.header,
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    transition: border-color 0.3s ease;
}

.header {
    padding: 20px;
}

.border-bottom {
    border-bottom: 1px solid var(--border-color) !important;
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-color);
    padding: 15px 20px;
    font-weight: 600;
    color: var(--text-heading);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--text-heading);
    font-weight: 600;
}

.text-muted {
    color: var(--text-muted) !important;
}

/* Blur Effect */
body.modal-open .main-content-wrapper {
    filter: blur(8px) grayscale(20%);
    transform: scale(0.99);
    opacity: 0.6;
    transition: all 0.4s ease;
    pointer-events: none;
}

.main-content-wrapper {
    transition: all 0.4s ease;
    transform: scale(1);
    filter: blur(0);
    opacity: 1;
}

/* Buttons & Controls */
.btn-nav,
.btn-header,
.header-badge,
.header-timezone {
    background: var(--bg-element);
    border: 1px solid var(--border-color);
    color: var(--text-heading);
    transition: all 0.2s ease;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 36px;
    /* Fixed height for consistency */
    vertical-align: middle;
}

.btn-nav:hover,
.btn-header:hover {
    background: var(--bg-element-hover);
    border-color: var(--text-muted);
    color: var(--text-heading);
}

.btn-nav.active {
    background: var(--accent-color);
    color: #ffffff;
    border-color: var(--accent-color);
}

.btn-header {
    padding: 0 12px;
    border-radius: 6px;
    min-width: 36px;
}


.btn-nav {
    padding: 0 12px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
}

.header-badge,
.header-timezone {
    padding: 0 12px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
}

/* Stats Cards & KPI */
.stats-info,
.kpi-grid {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.stat-item {
    background: var(--bg-card);
    padding: 15px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    flex: 1;
    min-width: 180px;
    box-shadow: var(--shadow);
}

.kpi-grid .stat-item {
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.stat-value {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-heading);
    line-height: 1.2;
}

.kpi-grid .stat-content h3 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-heading);
    margin: 0;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 5px;
}

/* Tables */
.table {
    --bs-table-bg: transparent;
    --bs-table-color: var(--text-main);
    --bs-table-border-color: var(--border-color);
    margin-bottom: 0;
}

.table th {
    background-color: var(--bg-card);
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 10;
    cursor: pointer;
    user-select: none;
    padding: 12px 10px;
}

.table th:hover {
    color: var(--text-heading);
}

.table th.active-sort {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

.table td {
    padding: 12px 10px;
    border-bottom: 1px solid var(--border-subtle);
    vertical-align: middle;
}

.table-hover tbody tr:hover {
    background-color: var(--bg-element-hover);
}

.table-hover tbody tr:hover td,
.table-hover tbody tr:hover .font-monospace {
    color: var(--text-heading);
}

.font-monospace {
    color: var(--text-main);
    font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace !important;
}

/* Section Divider */
.section-divider td {
    background-color: var(--bg-element) !important;
    font-weight: 600;
    color: var(--text-heading);
    padding: 8px 15px;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.8rem;
}

/* Badges */
.status-badge {
    padding: 4px 8px;
    border-radius: 4px;
    font-weight: 500;
    font-size: 0.75rem;
    border: 1px solid transparent;
}

.status-active,
.status-valid {
    background-color: var(--success-bg);
    color: var(--success-text);
    border-color: var(--badge-border-active);
}

.status-disconnected,
.status-expired {
    background-color: var(--danger-bg);
    color: var(--danger-text);
    border-color: var(--badge-border-disconnected);
}

.status-expiring {
    background-color: var(--warning-bg);
    color: var(--warning-text);
    border: 1px solid transparent;
}

.badge-soft-warning {
    background: var(--warning-bg);
    color: var(--warning-text);
    border: 1px solid transparent;
    font-weight: 600;
    font-size: 0.75rem;
    padding: 5px 10px;
}

.client-link {
    color: var(--text-heading);
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    transition: color 0.2s;
}

.client-link:hover {
    color: var(--accent-color);
}

.client-link i {
    color: var(--text-muted);
    transition: color 0.2s;
}

.client-link:hover i {
    color: var(--accent-color);
}

/* Inputs */
.form-control,
.form-select,
.search-input {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-heading);
    border-radius: 6px;
}

.form-control:focus,
.form-select:focus,
.search-input:focus {
    background-color: var(--bg-input);
    border-color: var(--accent-color);
    color: var(--text-heading);
    box-shadow: 0 0 0 2px rgba(9, 105, 218, 0.15);
    outline: none;
}

.form-control::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.input-group-text {
    background-color: var(--bg-element);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* Toggle Switch */
.form-check-input {
    background-color: var(--toggle-off-bg);
    border-color: var(--toggle-off-border);
    cursor: pointer;
}

.form-check-input:checked {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

[data-theme="dark"] .form-check-input:not(:checked) {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='%238b949e'/%3e%3c/svg%3e");
}

/* Sort Buttons */
.sort-btn-group {
    display: flex;
}

.sort-btn {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    font-size: 0.85rem;
    color: var(--text-main);
    min-width: 100px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.sort-btn:first-child {
    border-top-left-radius: 6px;
    border-bottom-left-radius: 6px;
    border-right: none;
}

.sort-btn:last-child {
    border-top-right-radius: 6px;
    border-bottom-right-radius: 6px;
}

.sort-btn:hover {
    background-color: var(--bg-element-hover);
}

.sort-btn.active {
    background-color: var(--bg-element-hover);
    color: var(--text-heading);
    border-color: var(--text-muted);
    font-weight: 600;
    z-index: 2;
}

/* Modals */
.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.5);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
}

.modal-footer {
    border-top: 1px solid var(--border-color);
}

.btn-close {
    filter: var(--btn-close-filter, none);
}

[data-theme="dark"] .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

.modal-backdrop.show {
    opacity: 0.6;
    background-color: #000;
}

.chart-controls {
    background: var(--bg-element);
    padding: 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.bg-white-custom {
    background-color: var(--bg-input) !important;
    border-color: var(--border-color) !important;
}

/* Charts & Dashboard Specifics */
.chart-container {
    position: relative;
    height: 320px;
    width: 100%;
}

.modal-chart-container {
    height: 400px;
    width: 100%;
    position: relative;
}

.pie-container {
    position: relative;
    height: 220px;
    width: 100%;
    display: flex;
    justify-content: center;
}

.chart-header-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 5px;
}

/* Certificates Specifics */
.category-header {
    background: linear-gradient(135deg, var(--bg-element), var(--bg-element-hover));
    border-left: 4px solid;
    padding: 12px 20px;
    margin: 0;
    font-weight: 600;
}

.category-header.active {
    border-left-color: var(--success-text);
    color: var(--success-text);
}

.category-header.expired {
    border-left-color: var(--danger-text);
    color: var(--danger-text);
}

.certificate-file {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 15px;
    opacity: 0.5;
}

.cert-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-subtle);
}

.cert-item:last-child {
    border-bottom: none;
}

/* Utilities */
.refresh-indicator {
    animation: spin 1s linear infinite;
}

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

    100% {
        transform: rotate(360deg);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .header-controls {
        flex-wrap: wrap;
        gap: 8px;
    }

    .stats-info {
        flex-direction: column;
    }

    .chart-controls {
        flex-direction: column;
        align-items: flex-start;
    }

    .chart-controls>div {
        width: 100%;
    }

    .kpi-grid {
        grid-template-columns: 1fr;
    }

    .chart-header-controls {
        flex-wrap: wrap;
        margin-top: 10px;
    }
}