/* ══════════════════════════════════════════════
   DYNAMIC PRICING — Premium Dark Theme
   ══════════════════════════════════════════════ */
:root {
    --bg: #0b1120;
    --surface: #111827;
    --card: rgba(17, 24, 39, .85);
    --border: rgba(255, 255, 255, .08);
    --text: #e2e8f0;
    --muted: #94a3b8;
    --accent: #3b82f6;
    --accent-glow: rgba(59, 130, 246, .25);
    --green: #22c55e;
    --red: #ef4444;
    --yellow: #f59e0b;
    --purple: #a78bfa;
    --orange: #f97316;
    --radius: 14px;
    --glass: rgba(255, 255, 255, .04);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
}

/* ── Header ── */
.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 16px 30px;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
}

.topbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.brand h1 {
    font-size: 1.4rem;
    font-weight: 800;
    background: linear-gradient(135deg, #f97316, #f59e0b, #eab308);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.mainNav {
    display: flex;
    gap: 18px;
    font-size: .92rem;
    font-weight: 600;
}

.navLink {
    color: var(--muted);
    text-decoration: none;
    padding: 4px 0;
    border-bottom: 2px solid transparent;
    transition: .2s;
}

.navLink:hover,
.navLink.active {
    color: #fff;
    border-bottom-color: var(--accent);
}

/* ── Layout ── */
.main-wrap {
    padding: 20px 24px;
    max-width: 1600px;
    margin: 0 auto;
}

.app-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 24px;
}

@media(max-width:1100px) {
    .app-layout {
        grid-template-columns: 1fr;
    }
}

/* ── Sidebar ── */
.sidebar {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    backdrop-filter: blur(10px);
    max-height: calc(100vh - 100px);
    overflow-y: auto;
}

.sidebar::-webkit-scrollbar {
    width: 5px;
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, .1);
    border-radius: 10px;
}

.sidebar__title {
    font-size: 1rem;
    font-weight: 800;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-group {
    margin-bottom: 16px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border);
}

.filter-group:last-of-type {
    border-bottom: none;
}

.filter-group label {
    display: block;
    font-size: .82rem;
    font-weight: 700;
    color: var(--muted);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: .4px;
}

.filter-group input[type="number"],
.filter-group input[type="date"],
.filter-group input[type="text"],
.filter-group select {
    width: 100%;
    padding: 8px 10px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--glass);
    color: var(--text);
    font-size: .88rem;
    outline: none;
    transition: .2s;
}

.filter-group input:focus,
.filter-group select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.row-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
}

.help {
    font-size: .75rem;
    color: var(--muted);
    margin-top: 4px;
}

/* Slider */
.slider-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.slider-row input[type="range"] {
    flex: 1;
    accent-color: var(--accent);
    height: 4px;
}

.slider-val {
    font-size: .8rem;
    color: var(--accent);
    font-weight: 700;
    min-width: 36px;
    text-align: right;
}

/* Scenario Tabs */
.scenario-tabs {
    display: flex;
    gap: 4px;
}

.scenario-tab {
    flex: 1;
    padding: 7px 0;
    border: 1px solid var(--border);
    background: var(--glass);
    color: var(--muted);
    border-radius: 8px;
    cursor: pointer;
    font-size: .82rem;
    font-weight: 700;
    transition: .2s;
}

.scenario-tab:hover {
    border-color: var(--accent);
    color: var(--text);
}

.scenario-tab.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

/* Objective Tabs */
.obj-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 8px;
}

.obj-tab {
    flex: 1;
    padding: 6px 4px;
    border: 1px solid var(--border);
    background: var(--glass);
    color: var(--muted);
    border-radius: 8px;
    cursor: pointer;
    font-size: .78rem;
    font-weight: 700;
    transition: .2s;
    text-align: center;
}

.obj-tab:hover {
    border-color: var(--yellow);
    color: var(--text);
}

.obj-tab.active {
    background: rgba(245, 158, 11, .15);
    border-color: var(--yellow);
    color: var(--yellow);
}

/* Buttons */
.btn-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 16px;
}

.btn {
    padding: 10px 16px;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    font-weight: 700;
    font-size: .88rem;
    transition: .2s;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #f97316, #f59e0b);
    color: #0f172a;
}

.btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(249, 115, 22, .3);
}

.btn-secondary {
    background: var(--glass);
    border: 1px solid var(--border);
    color: var(--text);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, .08);
}

.btn-success {
    background: rgba(34, 197, 94, .15);
    border: 1px solid rgba(34, 197, 94, .3);
    color: var(--green);
}

/* ── Content ── */
.content-area {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Alert */
.alert {
    padding: 10px 16px;
    border-radius: 10px;
    font-size: .85rem;
    font-weight: 600;
    display: none;
}

.alert.visible {
    display: block;
    animation: slideDown .3s ease;
}

.alert-success {
    background: rgba(34, 197, 94, .12);
    border: 1px solid rgba(34, 197, 94, .25);
    color: var(--green);
}

.alert-error {
    background: rgba(239, 68, 68, .12);
    border: 1px solid rgba(239, 68, 68, .25);
    color: var(--red);
}

.alert-info {
    background: rgba(59, 130, 246, .12);
    border: 1px solid rgba(59, 130, 246, .25);
    color: var(--accent);
}

/* KPI Grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
}

.kpi-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
}

.kpi-card.orange::before {
    background: linear-gradient(90deg, #f97316, #f59e0b);
}

.kpi-card.blue::before {
    background: linear-gradient(90deg, #3b82f6, #6366f1);
}

.kpi-card.green::before {
    background: linear-gradient(90deg, #22c55e, #10b981);
}

.kpi-card.purple::before {
    background: linear-gradient(90deg, #a78bfa, #8b5cf6);
}

.kpi-card.yellow::before {
    background: linear-gradient(90deg, #f59e0b, #eab308);
}

.kpi-label {
    font-size: .78rem;
    color: var(--muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .3px;
    margin-bottom: 6px;
}

.kpi-value {
    font-size: 1.6rem;
    font-weight: 800;
    color: #fff;
}

.kpi-compare {
    font-size: .75rem;
    color: var(--muted);
    margin-top: 4px;
}

/* Card */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    backdrop-filter: blur(10px);
    overflow: hidden;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    gap: 10px;
}

.card-title {
    font-size: 1rem;
    font-weight: 800;
}

.card-subtitle {
    font-size: .78rem;
    color: var(--muted);
    margin-top: 2px;
}

.card-body {
    padding: 16px 20px;
}

.card-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

/* Chart */
.chart-container {
    position: relative;
    height: 340px;
}

.chart-metric-selector {
    display: flex;
    gap: 3px;
}

.chart-metric-btn {
    padding: 5px 10px;
    border: 1px solid var(--border);
    background: var(--glass);
    color: var(--muted);
    border-radius: 6px;
    cursor: pointer;
    font-size: .78rem;
    font-weight: 700;
    transition: .15s;
}

.chart-metric-btn:hover {
    color: var(--text);
    border-color: var(--accent);
}

.chart-metric-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

/* Table */
.table-wrap {
    overflow-x: auto;
    max-height: 500px;
    overflow-y: auto;
}

.pricing-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .82rem;
    white-space: nowrap;
}

.pricing-table thead {
    position: sticky;
    top: 0;
    z-index: 5;
}

.pricing-table th {
    padding: 10px 12px;
    background: var(--surface);
    color: var(--muted);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .3px;
    font-size: .72rem;
    border-bottom: 2px solid var(--border);
    text-align: right;
}

.pricing-table th:first-child {
    text-align: left;
    position: sticky;
    left: 0;
    background: var(--surface);
    z-index: 6;
}

.pricing-table td {
    padding: 8px 12px;
    border-bottom: 1px solid rgba(255, 255, 255, .04);
    text-align: right;
}

.pricing-table td:first-child {
    text-align: left;
    font-weight: 700;
    position: sticky;
    left: 0;
    background: var(--card);
    z-index: 2;
}

.pricing-table tbody tr:hover {
    background: rgba(249, 115, 22, .06);
}

.pricing-table .editable-cell {
    background: rgba(249, 115, 22, .08);
    border: 1px solid rgba(249, 115, 22, .2);
    border-radius: 6px;
    padding: 4px 8px;
    color: var(--yellow);
    font-weight: 700;
    font-size: .84rem;
    width: 80px;
    text-align: right;
    outline: none;
}

.pricing-table .editable-cell:focus {
    border-color: var(--yellow);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, .2);
}

/* Explanation tooltip */
.explain-badge {
    display: inline-block;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: .7rem;
    font-weight: 600;
    cursor: help;
}

.explain-badge.up {
    background: rgba(34, 197, 94, .12);
    color: var(--green);
}

.explain-badge.down {
    background: rgba(239, 68, 68, .12);
    color: var(--red);
}

.explain-badge.neutral {
    background: rgba(148, 163, 184, .1);
    color: var(--muted);
}

/* DOW Editor */
.dow-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    margin-top: 6px;
}

.dow-cell {
    text-align: center;
}

.dow-cell label {
    display: block;
    font-size: .68rem;
    color: var(--muted);
    margin-bottom: 2px;
}

.dow-cell input {
    width: 100%;
    padding: 4px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--glass);
    color: var(--text);
    font-size: .78rem;
    text-align: center;
    outline: none;
}

/* Season Editor */
.season-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
    margin-top: 6px;
}

.season-cell {
    text-align: center;
}

.season-cell label {
    display: block;
    font-size: .65rem;
    color: var(--muted);
    margin-bottom: 2px;
}

.season-cell input {
    width: 100%;
    padding: 4px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--glass);
    color: var(--text);
    font-size: .78rem;
    text-align: center;
    outline: none;
}

/* Info panels */
.filter-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.filter-header label {
    margin-bottom: 0;
}

.info-btn {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: rgba(249, 115, 22, .08);
    color: var(--orange);
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: .2s;
    line-height: 1;
}

.info-btn:hover {
    background: rgba(249, 115, 22, .22);
    box-shadow: 0 0 10px rgba(249, 115, 22, .25);
}

.info-btn.active {
    background: rgba(249, 115, 22, .25);
    border-color: var(--orange);
}

.info-panel {
    display: none;
    margin: 6px 0 8px;
    padding: 10px 12px;
    border-radius: 8px;
    background: rgba(249, 115, 22, .05);
    border: 1px solid rgba(249, 115, 22, .12);
    font-size: .78rem;
    color: var(--muted);
    line-height: 1.5;
}

.info-panel.open {
    display: block;
    animation: slideDown .2s ease;
}

.info-panel strong {
    color: #fed7aa;
}

/* Toggle */
.toggle-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.toggle-switch {
    position: relative;
    width: 36px;
    height: 20px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: 20px;
    transition: .3s;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    height: 14px;
    width: 14px;
    left: 2px;
    bottom: 2px;
    background: #fff;
    border-radius: 50%;
    transition: .3s;
}

.toggle-switch input:checked+.toggle-slider {
    background: var(--orange);
    border-color: var(--orange);
}

.toggle-switch input:checked+.toggle-slider::before {
    transform: translateX(16px);
}

.toggle-label {
    font-size: .8rem;
    color: var(--muted);
    font-weight: 600;
}

/* Data source bar */
.data-bar {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.data-bar .status {
    font-size: .85rem;
    color: var(--muted);
}

.data-bar .status strong {
    color: var(--text);
}

/* Animations */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: slideDown .4s ease;
}

/* Print */
@media print {

    .sidebar,
    .topbar,
    .btn-group,
    .alert {
        display: none !important;
    }

    .app-layout {
        grid-template-columns: 1fr !important;
    }
}