:root {
    --bg: #f3f4f6;
    --surface: #ffffff;
    --surface-muted: #f8fafc;
    --border: #e5e7eb;
    --text: #0f172a;
    --muted: #64748b;
    --primary: #111827;
    --accent: #0f766e;
    --warning: #b45309;
    --success: #166534;
    --shadow: 0 12px 32px rgba(15, 23, 42, 0.06);
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 18px;
}

html, body {
    background: var(--bg);
    color: var(--text);
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    min-height: 100%;
}

body {
    margin: 0;
}

a {
    text-decoration: none;
}

.app-shell {
    min-height: 100vh;
}

.topbar {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1040;
}

.brand-mark {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: #fff;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.brand-title {
    font-size: 1.05rem;
    font-weight: 700;
}

.eyebrow,
.section-kicker {
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    color: var(--muted);
    font-weight: 700;
}

.app-nav {
    gap: 0.5rem;
}

.app-nav .nav-link {
    border-radius: 999px;
    color: var(--muted);
    font-weight: 600;
    padding: 0.6rem 0.95rem;
}

.app-nav .nav-link.active,
.app-nav .nav-link:hover {
    background: var(--primary);
    color: #fff;
}

.app-nav .nav-link-muted {
    color: var(--muted);
    pointer-events: none;
}

.page-title {
    font-size: clamp(1.7rem, 3vw, 2.35rem);
    line-height: 1.15;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.page-lead {
    color: var(--muted);
    max-width: 68ch;
    line-height: 1.8;
}

.panel-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    background: var(--surface);
}

.hero-panel {
    background: linear-gradient(180deg, #ffffff 0%, #fbfbfc 100%);
}

.metric-card {
    border: 1px solid var(--border);
    background: var(--surface-muted);
    border-radius: var(--radius-md);
    padding: 1rem;
    height: 100%;
}

.metric-label,
.mini-stat span,
.summary-row span {
    color: var(--muted);
    font-size: 0.86rem;
}

.metric-value {
    font-size: 1.55rem;
    font-weight: 700;
    margin-top: 0.35rem;
    margin-bottom: 0.25rem;
    letter-spacing: -0.02em;
}

.metric-note {
    color: var(--muted);
    font-size: 0.84rem;
}

.section-title {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.small-title {
    font-size: 1rem;
}

.stack-list,
.price-list,
.summary-grid {
    display: grid;
    gap: 0.85rem;
}

.stack-item,
.price-item,
.summary-row,
.mini-stat {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.8rem 0.9rem;
    background: var(--surface-muted);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.summary-row.total {
    background: #eef2f7;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 0.32rem 0.65rem;
    font-size: 0.76rem;
    font-weight: 700;
    border: 1px solid transparent;
    white-space: nowrap;
}

.status-badge.success {
    background: #ecfdf3;
    color: var(--success);
    border-color: #bbf7d0;
}

.status-badge.pending {
    background: #fff7ed;
    color: var(--warning);
    border-color: #fed7aa;
}

.status-badge.neutral {
    background: #eff6ff;
    color: #1d4ed8;
    border-color: #bfdbfe;
}

.status-badge.warning {
    background: #fff7ed;
    color: var(--warning);
    border-color: #fdba74;
}

.chart-list {
    display: grid;
    gap: 1rem;
}

.chart-row {
    display: grid;
    grid-template-columns: 96px minmax(0, 1fr) 96px;
    gap: 0.85rem;
    align-items: center;
}

.chart-meta,
.chart-value {
    font-size: 0.88rem;
}

.chart-track {
    height: 12px;
    background: #e2e8f0;
    border-radius: 999px;
    overflow: hidden;
}

.chart-bar {
    height: 100%;
    background: #111827;
    border-radius: 999px;
}

.app-table thead th {
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 700;
    border-bottom-color: var(--border);
    white-space: nowrap;
}

.app-table tbody td {
    border-bottom-color: var(--border);
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.empty-state {
    padding: 2.5rem 1rem;
    text-align: center;
}

.empty-state.compact {
    padding: 1.25rem 0.5rem;
}

.empty-title {
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.empty-copy {
    color: var(--muted);
}

.summary-card .alert {
    border-radius: var(--radius-sm);
}

.form-control,
.form-select {
    min-height: 46px;
    border-radius: var(--radius-sm);
    border-color: #d1d5db;
    padding-inline: 0.9rem;
}

.form-control:focus,
.form-select:focus,
.btn:focus {
    box-shadow: 0 0 0 0.2rem rgba(17, 24, 39, 0.12);
    border-color: #9ca3af;
}

.btn {
    border-radius: 10px;
    padding: 0.68rem 1rem;
    font-weight: 600;
}

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

.btn-outline-secondary {
    border-color: #d1d5db;
    color: var(--text);
}

.footer-meta {
    background: rgba(255, 255, 255, 0.92);
    color: var(--muted);
}

.app-toast {
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
}

@media print {
    .topbar,
    .footer-meta,
    .btn,
    .toast-container {
        display: none !important;
    }

    body {
        background: #fff;
    }

    .container-xxl {
        max-width: 100% !important;
    }

    .panel-card {
        box-shadow: none;
        border-color: #d1d5db;
    }
}

@media (max-width: 991.98px) {
    .chart-row {
        grid-template-columns: 1fr;
    }

    .app-nav .nav-link-muted {
        width: 100%;
        padding-inline: 0;
    }
}


.pricing-picker {
    display: grid;
    gap: 0.85rem;
}

.pricing-option,
.customer-list-card {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) minmax(140px, 180px);
    gap: 0.85rem;
    align-items: start;
    padding: 0.9rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface-muted);
}

.customer-list-card {
    grid-template-columns: 1fr;
    background: var(--surface);
}

.pricing-option .form-check-input {
    margin-top: 0.35rem;
}

.pricing-option-price .form-control {
    min-height: 42px;
}

.compact-list {
    gap: 0.6rem;
}

@media (max-width: 767.98px) {
    .pricing-option {
        grid-template-columns: auto 1fr;
    }

    .pricing-option-price {
        grid-column: 1 / -1;
    }
}

.product-inline-note {
    padding: 0.7rem 0.85rem;
    border: 1px dashed var(--border);
    border-radius: var(--radius-md);
    background: var(--surface-muted);
    color: var(--ink);
}