:root {
    --demo-bg: #eef5ff;
    --demo-panel: #ffffff;
    --demo-panel-soft: #f7fbff;
    --demo-text: #1b2430;
    --demo-muted: #647183;
    --demo-line: #d7e4ee;
    --demo-accent: var(--suite-accent);
    --demo-accent-strong: var(--suite-accent-strong);
    --demo-shadow: 0 18px 36px rgba(19, 48, 73, 0.1);
    --bg: var(--demo-bg);
    --panel: var(--demo-panel);
    --ink: var(--demo-text);
    --muted: var(--demo-muted);
    --line: var(--demo-line);
    --accent: var(--demo-accent);
    --accent-2: var(--demo-accent-strong);
    --accent-soft: var(--demo-accent-soft);
    --accent-surface: var(--demo-accent-surface);
    --accent-surface-strong: var(--demo-accent-surface-strong);
    --accent-text: var(--demo-accent-text);
    --awaiting: #b45309;
    --paid: #15803d;
    --overdue: #b91c1c;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    color: var(--ink);
    font: 15px/1.45 "Inter", "Trebuchet MS", sans-serif;
    background:
    radial-gradient(1200px 520px at -10% -20%, color-mix(in srgb, var(--accent) 12%, transparent) 0%, transparent 50%),
    radial-gradient(900px 440px at 110% -10%, color-mix(in srgb, var(--accent-2) 12%, transparent) 0%, transparent 52%),
        var(--bg);
}

.hero {
    margin-bottom: 16px;
}

h1 {
    margin: 4px 0;
}

.reset-chip {
    margin-bottom: 12px;
}

.reset-chip strong {
    letter-spacing: 0.03em;
    font-variant-numeric: tabular-nums;
}

.card, .invoice-card, dialog {
    background: linear-gradient(180deg, var(--accent-surface), var(--panel));
}

.metrics {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 12px;
}

.metric {
    padding: 12px;
}

.metric:hover {
    box-shadow: 0 12px 22px var(--demo-accent-glow);
}

.metric .label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .04em;
}

.metric .value {
    font-size: 26px;
    font-weight: 700;
}

.metric .money { font-size: 22px; }

.toolbar {
    padding: 10px 12px;
    margin-bottom: 14px;
}

.toolbar label {
    display: grid;
    gap: 4px;
    max-width: 260px;
}

select, input[type="text"], input[type="number"], input[type="date"], textarea {
    width: 100%;
}

select:focus,
input[type="text"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
textarea:focus {
    outline: none;
}

.invoice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 10px;
}

.invoice-card {
    padding: 12px;
    border-left: 5px solid #9ca3af;
    background: linear-gradient(180deg, var(--accent-surface), var(--panel));
    transition: transform 140ms ease, box-shadow 140ms ease;
}

.invoice-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 22px var(--demo-accent-glow);
}

.invoice-card.awaiting_payment { border-left-color: var(--awaiting); }
.invoice-card.paid { border-left-color: var(--paid); }
.invoice-card.overdue { border-left-color: var(--overdue); }

.invoice-head {
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: 8px;
}

.invoice-head h3 {
    margin: 0;
    font-size: 15px;
}

.badge {
    padding: 2px 9px;
    font-size: 12px;
    font-weight: 600;
}

.badge.awaiting_payment { color: var(--awaiting); border-color: color-mix(in srgb, var(--awaiting) 36%, transparent); background: color-mix(in srgb, var(--awaiting) 14%, var(--panel)); }
.badge.paid { color: var(--paid); border-color: color-mix(in srgb, var(--paid) 36%, transparent); background: color-mix(in srgb, var(--paid) 14%, var(--panel)); }
.badge.overdue { color: var(--overdue); border-color: color-mix(in srgb, var(--overdue) 36%, transparent); background: color-mix(in srgb, var(--overdue) 14%, var(--panel)); }

.metric.total .value,
.metric.outstanding .value {
    color: var(--accent-text);
}

.metric.awaiting .value {
    color: var(--awaiting);
}

.metric.paid .value {
    color: var(--paid);
}

.invoice-meta {
    margin: 10px 0;
    display: grid;
    gap: 3px;
    font-size: 13px;
    color: var(--muted);
}

.invoice-amount {
    font-size: 28px;
    font-family: "Space Grotesk", sans-serif;
    letter-spacing: -0.01em;
    color: var(--accent-text);
}

.invoice-actions {
    display: flex;
    gap: 8px;
    margin-top: 10px;
}

.btn {
    transition: transform 120ms ease, box-shadow 120ms ease;
}

.btn-primary {
    background: linear-gradient(180deg, var(--accent), var(--demo-accent-strong));
}

.status-line {
    min-height: 24px;
    margin-top: 10px;
    font-weight: 600;
    color: var(--accent-text);
}

dialog {
    width: min(840px, 96vw);
    padding: 0;
}

dialog::backdrop {
    background:
        radial-gradient(circle at 20% 10%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 42%),
        rgba(7, 19, 35, 0.58);
}

.invoice-form {
    padding: 14px;
    display: grid;
    gap: 10px;
}

.invoice-form h2 { margin: 0; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.three-col { display: grid; grid-template-columns: 1fr .7fr .9fr; gap: 8px; }

.payment-demo-panel {
    border-radius: 11px;
    padding: 10px;
    background: linear-gradient(180deg, var(--accent-surface-strong), var(--accent-surface));
}

.payment-demo-panel h3 {
    margin: 0 0 4px;
    font-size: 15px;
}

.payment-note {
    margin: 0;
    font-size: 13px;
    color: var(--accent-text);
}

.payment-buttons {
    display: flex;
    gap: 8px;
    margin-top: 10px;
}

.pay-demo-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--demo-line);
    border-radius: 10px;
    background: var(--accent-surface);
    padding: 6px 10px;
    opacity: 1;
    cursor: not-allowed;
}

.pay-demo-btn img {
    width: 98px;
    height: 28px;
    display: block;
}

.pay-demo-btn span {
    font-size: 13px;
    font-weight: 600;
    color: var(--muted);
}

.pay-demo-btn::after {
    content: attr(data-tip);
    position: absolute;
    left: 0;
    bottom: calc(100% + 8px);
    width: 250px;
    padding: 8px;
    border-radius: 8px;
    background: var(--demo-panel-soft);
    color: var(--demo-text);
    border: 1px solid var(--demo-line);
    font-size: 12px;
    line-height: 1.3;
    text-align: left;
    opacity: 0;
    transform: translateY(6px);
    pointer-events: none;
    transition: opacity 120ms ease, transform 120ms ease;
}

.pay-demo-btn:hover::after {
    opacity: 1;
    transform: translateY(0);
}

.demo-lock {
    margin: 10px 0 0;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-text);
}

.activity-panel {
    border-radius: 11px;
    padding: 10px;
    background: linear-gradient(180deg, var(--accent-surface-strong), var(--accent-surface));
}

.activity-panel h3 {
    margin: 0 0 8px;
    font-size: 15px;
}

.activity-list {
    margin: 0;
    padding-left: 18px;
    max-height: 140px;
    overflow: auto;
    font-size: 13px;
}

.activity-list li {
    margin-bottom: 6px;
}

.empty {
    border: 1px dashed color-mix(in srgb, var(--accent) 24%, transparent);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    color: var(--demo-muted);
    background: color-mix(in srgb, var(--accent) 8%, var(--panel));
}

@media (max-width: 980px) {
    .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .three-col { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
    .hero { flex-direction: column; align-items: start; }
    .metrics { grid-template-columns: 1fr; }
    .two-col, .three-col { grid-template-columns: 1fr; }
    .payment-buttons { flex-direction: column; }
    .hero-actions { margin-top: 0.8rem; }
}