:root {
    --pc-bg: #07111f;
    --pc-panel: rgba(12, 24, 42, .88);
    --pc-panel-soft: rgba(18, 35, 58, .72);
    --pc-border: rgba(148, 163, 184, .22);
    --pc-text: #e5edf7;
    --pc-muted: #93a4b8;
    --pc-blue: #38bdf8;
    --pc-orange: #fb923c;
    --pc-green: #22c55e;
    --pc-red: #f87171;
    --pc-yellow: #facc15;
}

* {
    box-sizing: border-box;
}

body.lab-sandbox-page--payment {
    min-height: 100vh;
    margin: 0;
    color: var(--pc-text);
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: radial-gradient(circle at 20% 10%, rgba(56, 189, 248, .2), transparent 32%),
        radial-gradient(circle at 80% 0%, rgba(251, 146, 60, .18), transparent 28%), var(--pc-bg);
}

.pc-demo-shell {
    width: min(1200px, calc(100% - 32px));
    margin: 0 auto;
    padding: 28px 0 44px;
}

.pc-hero,
.pc-panel,
.pc-safe-note,
.pc-kpi-card,
.pc-request-card {
    border: 1px solid var(--pc-border);
    background: var(--pc-panel);
    box-shadow: 0 24px 80px rgba(0, 0, 0, .22);
    backdrop-filter: blur(16px);
}

.pc-hero {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    padding: 26px;
    border-radius: 28px;
}

.pc-back,
.pc-eyebrow,
.pc-lead,
.pc-panel__head span,
.pc-request-card p,
.pc-detail__item span,
.pc-event strong,
.pc-safe-note {
    color: var(--pc-muted);
}

.pc-back {
    display: inline-flex;
    margin-bottom: 18px;
    text-decoration: none;
}

.pc-eyebrow {
    margin: 0 0 8px;
    text-transform: uppercase;
    letter-spacing: .14em;
    font-size: 11px;
    font-weight: 800;
}

.pc-hero h1,
.pc-panel h2,
.pc-request-card h3 {
    margin: 0;
}

.pc-hero h1 {
    font-size: clamp(34px, 6vw, 64px);
    letter-spacing: -.06em;
}

.pc-lead {
    max-width: 760px;
    margin: 14px 0 0;
    font-size: 17px;
    line-height: 1.7;
}

.pc-actions,
.pc-row-actions,
.pc-filter-tabs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.pc-actions {
    align-content: flex-start;
    justify-content: flex-end;
    min-width: 250px;
}

.pc-btn,
.pc-filter-tabs button,
.pc-row-actions button {
    cursor: pointer;
    border: 1px solid var(--pc-border);
    border-radius: 999px;
    color: var(--pc-text);
    background: rgba(255, 255, 255, .07);
    font-weight: 800;
}

.pc-btn {
    padding: 11px 15px;
}

.pc-btn--primary {
    border-color: rgba(56, 189, 248, .5);
    background: linear-gradient(135deg, rgba(56, 189, 248, .24), rgba(251, 146, 60, .18));
}

.pc-safe-note {
    margin-top: 18px;
    padding: 14px 18px;
    border-radius: 18px;
}

.pc-kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    margin: 18px 0;
}

.pc-kpi-card {
    padding: 18px;
    border-radius: 22px;
}

.pc-kpi-card span,
.pc-kpi-card small {
    display: block;
    color: var(--pc-muted);
}

.pc-kpi-card strong {
    display: block;
    margin: 8px 0 4px;
    font-size: 28px;
}

.pc-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 18px;
}

.pc-main,
.pc-side {
    display: grid;
    gap: 18px;
    align-content: start;
}

.pc-panel {
    padding: 20px;
    border-radius: 26px;
}

.pc-panel__head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 16px;
}

.pc-filter-tabs button {
    padding: 8px 12px;
}

.pc-filter-tabs button.active {
    border-color: rgba(56, 189, 248, .7);
    color: #dff7ff;
    background: rgba(56, 189, 248, .16);
}

.pc-payment-list {
    display: grid;
    gap: 12px;
}

.pc-request-card {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 140px auto;
    gap: 14px;
    align-items: center;
    padding: 16px;
    border-radius: 20px;
}

.pc-request-card.active {
    border-color: rgba(251, 146, 60, .58);
    background: var(--pc-panel-soft);
}

.pc-request-card h3 {
    margin-top: 8px;
    font-size: 17px;
}

.pc-request-card p {
    margin: 6px 0 0;
}

.pc-request-card > strong {
    text-align: right;
    font-size: 18px;
}

.pc-status {
    display: inline-flex;
    padding: 5px 9px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: .06em;
    background: rgba(148, 163, 184, .14);
}

.pc-status--approved {
    color: var(--pc-yellow);
    background: rgba(250, 204, 21, .12);
}

.pc-status--paid {
    color: var(--pc-green);
    background: rgba(34, 197, 94, .14);
}

.pc-status--rejected {
    color: var(--pc-red);
    background: rgba(248, 113, 113, .14);
}

.pc-row-actions {
    justify-content: flex-end;
}

.pc-row-actions button {
    padding: 7px 10px;
    font-size: 12px;
}

.pc-detail,
.pc-rules,
.pc-events {
    display: grid;
    gap: 10px;
}

.pc-detail__item,
.pc-event,
.pc-empty {
    padding: 13px;
    border: 1px solid var(--pc-border);
    border-radius: 16px;
    background: rgba(255, 255, 255, .05);
}

.pc-detail__item span,
.pc-detail__item strong {
    display: block;
}

.pc-detail__item strong {
    margin-top: 5px;
}

.pc-rules {
    margin: 0;
    padding-left: 18px;
    color: var(--pc-muted);
    line-height: 1.6;
}

.pc-event {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 10px;
    color: var(--pc-text);
}

@media (max-width: 960px) {
    .pc-hero,
    .pc-panel__head {
        display: grid;
    }

    .pc-actions {
        justify-content: flex-start;
        min-width: 0;
    }

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

    .pc-request-card {
        grid-template-columns: 1fr;
    }

    .pc-request-card > strong {
        text-align: left;
    }
}

@media (max-width: 560px) {
    .pc-demo-shell {
        width: min(100% - 20px, 1200px);
        padding-top: 14px;
    }

    .pc-hero,
    .pc-panel {
        padding: 16px;
        border-radius: 20px;
    }

    .pc-btn,
    .pc-filter-tabs button,
    .pc-row-actions button {
        width: 100%;
        justify-content: center;
    }
}