:root {
    --accent: #4f46e5;
    --accent-dark: #4338ca;
    --accent-light: #eef2ff;
    --success: #16a34a;
    --success-light: #f0fdf4;
    --danger: #dc2626;
    --danger-light: #fef2f2;
    --ink: #0f172a;
    --muted: #64748b;
    --border: #e5e7eb;
    --bg: #f8fafc;
    --radius-lg: 1.25rem;
    --radius-md: 0.85rem;
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--bg);
    color: var(--ink);
    font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    color: var(--accent-dark);
}

.navbar-brand-custom {
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--ink) !important;
}

.navbar-brand-custom .dot {
    color: var(--accent);
}

.top-nav {
    background: #ffffff;
    border-bottom: 1px solid var(--border);
}

/* Cards */
.card-clean {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.card-clean-hover {
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card-clean-hover:hover {
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
    transform: translateY(-2px);
}

.card-elevated {
    background: #ffffff;
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
}

/* Buttons */
.btn-accent {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    font-weight: 600;
}

.btn-accent:hover {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
    color: #fff;
}

.btn-outline-accent {
    border: 1px solid var(--accent);
    color: var(--accent);
    font-weight: 600;
    background: #fff;
}

.btn-outline-accent:hover {
    background: var(--accent-light);
    color: var(--accent-dark);
}

.btn, .form-control, .form-select {
    border-radius: 0.65rem;
}

.form-control:focus, .form-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 0.2rem rgba(79, 70, 229, 0.12);
}

/* Hero */
.hero-section {
    padding: 4.5rem 0 3rem;
}

.hero-kicker {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    background: var(--accent-light);
    color: var(--accent-dark);
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.hero-title {
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.text-muted-soft {
    color: var(--muted);
}

/* Payment page */
.qr-wrapper {
    display: inline-block;
    padding: 1.1rem;
    background: #ffffff;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.qr-wrapper:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
}

.amount-display {
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--accent-dark);
}

.status-box {
    border-radius: var(--radius-md);
    font-weight: 600;
    border: 1px solid var(--border);
    background: #f8fafc;
}

.status-box.is-success {
    background: var(--success-light);
    border-color: #bbf7d0;
    color: var(--success);
}

.status-box.is-danger {
    background: var(--danger-light);
    border-color: #fecaca;
    color: var(--danger);
}

.status-box.is-pending {
    background: var(--accent-light);
    border-color: #c7d2fe;
    color: var(--accent-dark);
}

.method-pill {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--muted);
    background: #fff;
}

.timer-chip {
    font-variant-numeric: tabular-nums;
    font-weight: 700;
}

/* Badges */
.status-badge {
    display: inline-block;
    padding: 0.28rem 0.7rem;
    border-radius: 999px;
    font-size: 0.76rem;
    font-weight: 700;
}

.badge-pending {
    background: var(--accent-light);
    color: var(--accent-dark);
}

.badge-paid {
    background: var(--success-light);
    color: var(--success);
}

.badge-expired {
    background: var(--danger-light);
    color: var(--danger);
}

/* Admin layout */
.admin-shell {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 260px;
    flex-shrink: 0;
    background: #ffffff;
    border-right: 1px solid var(--border);
    padding: 1.5rem 1.1rem;
}

.admin-sidebar .nav-link {
    color: var(--muted);
    font-weight: 600;
    border-radius: 0.65rem;
    padding: 0.6rem 0.85rem;
    margin-bottom: 0.2rem;
}

.admin-sidebar .nav-link.active,
.admin-sidebar .nav-link:hover {
    background: var(--accent-light);
    color: var(--accent-dark);
}

.admin-main {
    flex: 1;
    padding: 2rem 2.25rem;
}

.stat-card {
    border-radius: var(--radius-lg);
    padding: 1.4rem;
    background: #fff;
    border: 1px solid var(--border);
}

.stat-card .stat-label {
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.stat-card .stat-value {
    font-weight: 800;
    letter-spacing: -0.02em;
    font-size: 1.7rem;
    margin-top: 0.35rem;
}

.table-clean thead th {
    color: var(--muted);
    font-size: 0.76rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 700;
    border-bottom: 1px solid var(--border);
    background: transparent;
}

.table-clean td {
    vertical-align: middle;
    border-bottom: 1px solid var(--border);
}

.table-clean tr:last-child td {
    border-bottom: none;
}

code.trx-code {
    background: #f1f5f9;
    padding: 0.15rem 0.5rem;
    border-radius: 0.4rem;
    font-size: 0.85rem;
}

/* Installer */
.install-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.install-steps {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.install-step {
    flex: 1;
    height: 6px;
    border-radius: 999px;
    background: var(--border);
}

.install-step.active,
.install-step.done {
    background: var(--accent);
}

.footer-note {
    color: var(--muted);
    font-size: 0.85rem;
}

@media (max-width: 900px) {
    .admin-shell {
        flex-direction: column;
    }
    .admin-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
    .admin-main {
        padding: 1.25rem;
    }
}