/* ===== Microsoft Design Language / Fluent-inspired Theme ===== */

:root {
    --bg-app: #f5f5f5;
    --bg-image: url('/img/bg-light.png');
    --bg-surface: #ffffff;
    --bg-surface-hover: #f0f0f0;
    --bg-menu: #ffffff;
    --bg-topbar: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f5f5f5;
    --bg-input: #ffffff;
    --bg-accent: #0078d4;
    --bg-accent-hover: #106ebe;
    --bg-accent-subtle: #e8f0fe;
    --bg-danger: #d13438;
    --bg-danger-hover: #a4262c;
    --bg-success: #107c10;
    --bg-warning: #ffb900;

    --text-primary: #242424;
    --text-secondary: #616161;
    --text-tertiary: #8a8a8a;
    --text-on-accent: #ffffff;
    --text-accent: #0078d4;
    --text-danger: #d13438;
    --text-success: #107c10;

    --border-default: #e0e0e0;
    --border-subtle: #f0f0f0;
    --border-strong: #d1d1d1;
    --border-accent: #0078d4;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 2px 4px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.1), 0 2px 4px rgba(0,0,0,0.06);

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.8125rem;
    --font-size-base: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;

    --menu-width: 260px;
    --topbar-height: 48px;
    --transition: 0.15s ease;
}

[data-theme="dark"] {
    --bg-app: #1a1a1a;
    --bg-image: none;
    --bg-surface: #2d2d2d;
    --bg-surface-hover: #383838;
    --bg-menu: #1f1f1f;
    --bg-topbar: #1f1f1f;
    --bg-card: #2d2d2d;
    --bg-card-hover: #383838;
    --bg-input: #383838;
    --bg-accent: #2b88d8;
    --bg-accent-hover: #4ba0e0;
    --bg-accent-subtle: #1a3a5c;
    --bg-danger: #e74c3c;
    --bg-danger-hover: #c0392b;
    --bg-success: #27ae60;
    --bg-warning: #f39c12;

    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --text-tertiary: #6a6a6a;
    --text-on-accent: #ffffff;
    --text-accent: #4ba0e0;
    --text-danger: #e74c3c;
    --text-success: #27ae60;

    --border-default: #404040;
    --border-subtle: #333333;
    --border-strong: #555555;
    --border-accent: #2b88d8;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
    --shadow-md: 0 2px 4px rgba(0,0,0,0.25), 0 1px 2px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.3), 0 2px 4px rgba(0,0,0,0.2);
}

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

html, body {
    height: 100%;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background: var(--bg-app);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* ===== App Shell ===== */
.app-shell {
    display: flex;
    height: 100vh;
    overflow: hidden;
    background: var(--bg-app);
    background-image: var(--bg-image);
    background-size: cover;
    background-position: right center;
    background-attachment: fixed;
}

/* ===== Left Menu Panel ===== */
.menu-panel {
    width: var(--menu-width);
    min-width: var(--menu-width);
    background: var(--bg-menu);
    border-right: 1px solid var(--border-default);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    z-index: 10;
}

.menu-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    height: var(--topbar-height);
    border-bottom: 1px solid var(--border-subtle);
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--text-primary);
}

.menu-brand .brand-icon {
    width: 28px;
    height: 28px;
    background: var(--bg-accent);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-on-accent);
    font-weight: 700;
    font-size: var(--font-size-sm);
}

.menu-nav {
    padding: 8px;
    flex: 1;
}

.menu-section-label {
    padding: 8px 12px 4px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-base);
    transition: all var(--transition);
    cursor: pointer;
    user-select: none;
}

.menu-item:hover {
    background: var(--bg-surface-hover);
    color: var(--text-primary);
}

.menu-item.active {
    background: var(--bg-accent-subtle);
    color: var(--text-accent);
    font-weight: 600;
}

.menu-item .menu-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

/* ===== Main Content Area ===== */
.main-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ===== Top Bar ===== */
.top-bar {
    height: var(--topbar-height);
    min-height: var(--topbar-height);
    background: var(--bg-topbar);
    border-bottom: 1px solid var(--border-default);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 5;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.breadcrumb {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    background: none;
    padding: 0;
    margin: 0;
}

.breadcrumb span {
    color: var(--text-primary);
    font-weight: 600;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.top-bar-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all var(--transition);
}

.top-bar-btn:hover {
    background: var(--bg-surface-hover);
    color: var(--text-primary);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--bg-accent);
    color: var(--text-on-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
}

/* ===== Page Content ===== */
.page-content {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.page-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: 4px;
}

.page-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* ===== Section ===== */
.section {
    margin-bottom: 32px;
}

.section-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-subtle);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 6px 16px;
    border-radius: var(--radius-sm);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    border: 1px solid transparent;
    text-decoration: none;
    line-height: 1.4;
}

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

.btn-outline {
    background: transparent;
    color: var(--text-accent);
    border-color: var(--border-strong);
}
.btn-outline:hover { background: var(--bg-accent-subtle); }

.btn-subtle {
    background: transparent;
    color: var(--text-secondary);
    border-color: transparent;
}
.btn-subtle:hover { background: var(--bg-surface-hover); color: var(--text-primary); }

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

.btn-sm { padding: 4px 10px; font-size: var(--font-size-sm); }
.btn-lg { padding: 10px 24px; font-size: var(--font-size-md); }

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

.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

/* ===== Cards ===== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-subtle);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: transparent;
}

.card-body {
    padding: 16px;
}

.card-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    background: transparent;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}

.stat-card {
    text-align: center;
    padding: 20px;
}

.stat-card .stat-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-accent);
}

.stat-card .stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ===== Tables ===== */
.table-container {
    overflow-x: auto;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    background: var(--bg-card);
}

.table-container table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-base);
}

.table-container thead {
    background: var(--bg-surface-hover);
}

.table-container th {
    text-align: left;
    padding: 10px 16px;
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-default);
    white-space: nowrap;
}

.table-container td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-primary);
}

.table-container tbody tr:hover {
    background: var(--bg-surface-hover);
}

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

/* ===== Color Palette ===== */
.palette-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
}

.palette-swatch {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-default);
}

.palette-swatch .swatch-color {
    height: 64px;
}

.palette-swatch .swatch-info {
    padding: 8px 10px;
    background: var(--bg-card);
}

.palette-swatch .swatch-name {
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.palette-swatch .swatch-hex {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    font-family: 'Cascadia Code', 'Consolas', monospace;
}

/* ===== Badge ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.badge-accent { background: var(--bg-accent-subtle); color: var(--text-accent); }
.badge-success { background: rgba(16,124,16,0.1); color: var(--text-success); }
.badge-danger { background: rgba(209,52,56,0.1); color: var(--text-danger); }
.badge-warning { background: rgba(255,185,0,0.15); color: #9a6700; }

[data-theme="dark"] .badge-warning { color: var(--bg-warning); }

/* ===== Dropdown ===== */
.dropdown {
    appearance: none;
    -webkit-appearance: none;
    padding: 6px 32px 6px 12px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    background: var(--bg-input) 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='%23616161' d='M2 4l4 4 4-4'/%3E%3C/svg%3E") no-repeat right 10px center;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition);
    min-width: 220px;
}

.dropdown:hover {
    border-color: var(--border-accent);
}

.dropdown:focus {
    outline: none;
    border-color: var(--border-accent);
    box-shadow: 0 0 0 2px var(--bg-accent-subtle);
}

[data-theme="dark"] .dropdown {
    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='%23a0a0a0' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
}

/* ===== Multi-select ===== */
.multi-select {
    background-image: none;
    padding: 4px 8px;
    min-height: 60px;
    max-height: 110px;
}

.multi-select option {
    padding: 2px 6px;
    border-radius: 2px;
    font-size: var(--font-size-sm);
}

.multi-select option:checked {
    background: var(--bg-accent);
    color: var(--text-on-accent);
}

/* ===== Filter Input ===== */
.filter-label {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.filter-input {
    padding: 6px 12px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    width: 100%;
    transition: all var(--transition);
}

.filter-input:focus {
    outline: none;
    border-color: var(--border-accent);
    box-shadow: 0 0 0 2px var(--bg-accent-subtle);
}

/* ===== Toggle Group ===== */
.toggle-group {
    display: flex;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.toggle-btn {
    padding: 6px 16px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-decoration: none;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
}

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

.toggle-btn.active {
    background: var(--bg-accent);
    color: var(--text-on-accent);
}

/* ===== Gauges ===== */
.gauges-row {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
    margin-top: 16px;
}

.gauge-card {
    text-align: center;
    padding: 16px 8px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    background: #2a2a2a;
    transition: all var(--transition);
}

.gauge-card:hover {
    border-color: var(--border-default);
    background: #333333;
}

.gauge-card-active {
    border-color: var(--border-accent);
    background: #222222;
}

.gauge-label {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 8px;
}

.gauge-ring {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto;
}

.gauge-svg {
    width: 100%;
    height: 100%;
}

.gauge-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: #ffffff !important;
}

/* ===== Bar Chart ===== */
.bar-chart {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.bar-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.bar-label {
    width: 180px;
    min-width: 180px;
    text-align: right;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.bar-track {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 8px;
    height: 24px;
}

.bar-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.3s ease;
    min-width: 2px;
}

.bar-value {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* ===== AI Button ===== */
.btn-ai {
    background: linear-gradient(135deg, #8b5cf6, #06b6d4);
    color: #ffffff;
    border: none;
    padding: 6px 16px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition);
}

.btn-ai:hover {
    opacity: 0.85;
    box-shadow: 0 0 12px rgba(139, 92, 246, 0.4);
}

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 700px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
}

.ai-text {
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--text-primary);
}

.ai-text h4 {
    color: var(--text-accent);
}

.ai-text strong {
    color: var(--text-primary);
}