/**
 * Shared dashboard theme & layout helpers (FPSO + reservoir + maintenance + etc.)
 * Load after page-specific <style> so tokens can be overridden per page.
 */
:root {
    --primary-color: #3b82f6;
    --secondary-color: #8b5cf6;
    --accent-color: #f43f5e;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --dark-bg: #0b1120;
    --dark-surface: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #334155;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: radial-gradient(ellipse 120% 80% at 50% -20%, rgba(59, 130, 246, 0.12), transparent 50%),
        radial-gradient(ellipse 80% 50% at 100% 50%, rgba(139, 92, 246, 0.06), transparent 45%),
        var(--dark-bg);
    color: var(--text-primary);
}

/* Full-viewport app shells (FPSO, maintenance, underground, hub) */
body.dash-shell {
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

body.page-reservoir {
    min-height: 100vh;
    overflow-x: hidden;
}

body.dash-focus-active .chart-card:not(.hero-card),
body.dash-focus-active .secondary-chart,
body.dash-focus-active .panel {
    border-color: rgba(59, 130, 246, 0.35);
    box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.15), 0 8px 24px rgba(0, 0, 0, 0.35);
}

/* Top bar / nav */
.top-bar,
.navbar {
    height: 58px;
    background: rgba(30, 41, 59, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 22px;
    z-index: 10;
}

.brand {
    font-size: 1.2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
}

.brand i { color: var(--accent-color); }

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

.control-btn,
.btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.control-btn:hover,
.control-btn.active,
.btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.btn.btn-primary,
.btn-primary {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.btn.btn-primary:hover,
.btn-primary:hover {
    background: #2563eb;
    color: white;
}

/* FPSO scroll region + split main (requires body.dash-fpso on wrapper parent) */
.dash-fpso .dashboard-grid {
    display: flex;
    flex-direction: column;
    padding: 24px 30px 40px;
    gap: 24px;
    overflow-y: auto;
    background: var(--dark-bg);
}

.dash-fpso .main-content {
    flex: 1;
    display: grid;
    grid-template-columns: 280px 1fr;
    height: calc(100vh - 58px);
    overflow: hidden;
}

.sidebar {
    background: rgba(15, 23, 42, 0.95);
    border-right: 1px solid var(--border-color);
    padding: 15px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.grid-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: stretch;
    min-height: 360px;
}

.grid-row-tall { min-height: 460px; }

.full-width { width: 100%; }

.chart-card {
    background: linear-gradient(165deg, rgba(30, 41, 59, 0.98) 0%, rgba(15, 23, 42, 0.95) 100%);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 25px;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.35);
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.chart-card:hover {
    border-color: rgba(148, 163, 184, 0.35);
}

.secondary-chart,
.panel {
    background: linear-gradient(165deg, rgba(30, 41, 59, 0.98) 0%, rgba(15, 23, 42, 0.95) 100%);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.35);
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.secondary-chart:hover,
.panel:hover {
    border-color: rgba(148, 163, 184, 0.35);
}

.kpi-card,
.gauge-card {
    background: linear-gradient(165deg, rgba(30, 41, 59, 0.95) 0%, rgba(15, 23, 42, 0.92) 100%);
    border: 1px solid var(--border-color);
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.kpi-card:hover,
.gauge-card:hover {
    border-color: rgba(148, 163, 184, 0.3);
}

.chart-section {
    background: linear-gradient(165deg, rgba(30, 41, 59, 0.98) 0%, rgba(15, 23, 42, 0.95) 100%);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.35);
}

.chart-container {
    flex: 1;
    min-height: 0;
    width: 100%;
    position: relative;
}

.chart-header,
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    padding-bottom: 5px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.chart-title,
.section-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 8px;
}

.loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    z-index: 100;
    background: rgba(0, 0, 0, 0.8);
    padding: 30px;
    border-radius: 12px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s infinite linear;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.floating-panel {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: rgba(15, 23, 42, 0.92);
    padding: 16px 18px;
    border-radius: 12px;
    border: 1px solid rgba(59, 130, 246, 0.25);
    width: 270px;
    backdrop-filter: blur(14px);
    display: none;
    z-index: 20;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
    animation: panelIn 0.35s ease;
}

@keyframes panelIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.panel-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 5px;
    font-size: 0.9rem;
}

.panel-row label { color: var(--text-secondary); }

@media (max-width: 1200px) {
    .grid-row {
        grid-template-columns: 1fr;
        min-height: 320px;
    }
    .grid-row-tall {
        min-height: auto;
    }
    .grid-row-tall .chart-card {
        min-height: 380px !important;
    }
}

.sidebar-section h3 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.stat-box {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 10px;
}

.stat-value { font-size: 1.5rem; font-weight: 700; color: var(--primary-color); }
.stat-label { font-size: 0.75rem; color: var(--text-secondary); }

.feature-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    margin-bottom: 6px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}

.feature-item:hover,
.feature-item.active {
    border-color: var(--primary-color);
    background: rgba(59, 130, 246, 0.12);
}

.feature-id { font-size: 0.7rem; color: var(--text-secondary); }

.focus-banner {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 12px 16px;
    margin-bottom: 8px;
    background: linear-gradient(90deg, rgba(59, 130, 246, 0.18), rgba(139, 92, 246, 0.12));
    border: 1px solid rgba(59, 130, 246, 0.45);
    border-radius: 12px;
    font-size: 0.88rem;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.12);
}

.focus-banner.visible { display: flex; }

.focus-banner .focus-inner {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 0;
}

.focus-banner .focus-inner i { color: var(--accent-color); flex-shrink: 0; }
.focus-banner #focus-text { color: var(--text-primary); line-height: 1.35; }

.tip-banner {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 14px;
    margin-bottom: 16px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 10px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.45;
}

.tip-banner i { color: var(--primary-color); margin-top: 2px; flex-shrink: 0; }

.tip-banner button.dismiss-tip {
    margin-left: auto;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 1rem;
    line-height: 1;
}

.tip-banner button.dismiss-tip:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.06);
}

.tip-banner.hidden { display: none; }

.twin-fly {
    position: absolute;
    bottom: 12px;
    left: 12px;
    z-index: 12;
    display: flex;
    gap: 8px;
}

.twin-fly .control-btn { font-size: 0.8rem; padding: 6px 10px; }

.chart-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 6px;
    min-height: 1.2em;
}

.sidebar select.control-btn {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%2394a3b8' viewBox='0 0 24 24'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    background-size: 18px;
    padding-right: 28px;
}

input[type="range"].intensity-range {
    -webkit-appearance: none;
    height: 6px;
    border-radius: 3px;
    background: linear-gradient(90deg, #334155, var(--primary-color));
    outline: none;
}

input[type="range"].intensity-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--text-primary);
    border: 2px solid var(--primary-color);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.intensity-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 6px;
}

.intensity-row .intensity-val {
    font-variant-numeric: tabular-nums;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.85rem;
}

.analytics-tabs .control-btn { border-radius: 999px; padding: 6px 14px; }

.analytics-tabs .control-btn.active {
    background: linear-gradient(135deg, var(--primary-color), #2563eb);
    border-color: transparent;
    box-shadow: 0 2px 12px rgba(59, 130, 246, 0.35);
}

/* Two equal columns for multi-dashboard rows */
.lower-grid,
.dashboard-row:not(.gauge-section) {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 20px;
    align-items: stretch;
}

.lower-grid.grid-1-2,
.lower-grid.grid-2-1,
.dashboard-row.grid-1-2,
.dashboard-row.grid-2-1 {
    grid-template-columns: 1fr 1fr !important;
}

.dashboard-row.grid-3 {
    grid-template-columns: 1fr 1fr !important;
}

/* Seismic: equal split */
.page-seismic .dashboard-grid {
    grid-template-columns: 1fr 1fr !important;
}

/* Reservoir shell */
.page-reservoir {
    min-height: 100vh;
    overflow-y: auto;
}

.page-reservoir .dashboard-container {
    max-width: 1800px;
    margin: 0 auto;
    padding: 20px;
}

.page-reservoir .header {
    background: rgba(30, 41, 59, 0.9) !important;
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
}

/* Maintenance gauges: 2×2 on wide, stack on narrow */
.gauge-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

@media (min-width: 1100px) {
    .gauge-section {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Underground / maintenance chart cards pick up .chart-card from shared */

/* Digital twin overlay */
.page-digital-twin .ui-overlay {
    background: rgba(15, 23, 42, 0.92);
    border: 1px solid rgba(59, 130, 246, 0.25);
    backdrop-filter: blur(14px);
    border-radius: 12px;
}

/* Geological model toolbar */
.page-geo .geo-toolbar {
    background: rgba(15, 23, 42, 0.92);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(12px);
    border-radius: 12px;
}

.page-geo .geo-toolbar h2 { color: var(--accent-color); }

.page-geo .geo-toolbar button {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 8px;
}

.page-geo .geo-toolbar button:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* Index hub cards */
.page-hub .dashboard-card {
    background: linear-gradient(165deg, rgba(30, 41, 59, 0.95) 0%, rgba(15, 23, 42, 0.92) 100%);
    border: 1px solid var(--border-color);
    transition: border-color 0.25s ease, transform 0.2s ease;
}

.page-hub .dashboard-card:hover {
    border-color: rgba(59, 130, 246, 0.4);
}

.page-hub .main-container {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.page-hub .dashboards-grid {
    overflow-y: auto;
    flex: 1;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
    padding: 24px 40px 48px;
}

.page-hub {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}