:root {
    --bg: #f5f7fb;
    --card: #ffffff;
    --text: #1f2937;
    --muted: #6b7280;
    --primary: #1d4ed8;
    --primary-dark: #1e40af;
    --danger: #b91c1c;
    --success: #15803d;
    --border: #dbe2ea;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: var(--bg);
    color: var(--text);
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.topbar { background: #0f172a; color: #fff; padding: 16px 0; }
.topbar a { color: #fff; margin-left: 18px; }
.topbar-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { font-weight: 700; font-size: 20px; margin-left: 0 !important; }
.page { padding: 24px 0 48px; }
.hero {
    background: linear-gradient(135deg, #1d4ed8, #2563eb);
    color: #fff;
    padding: 44px;
    border-radius: 18px;
    margin-bottom: 24px;
}
.hero.small { padding: 36px; }
.hero h1 { margin: 0 0 12px; font-size: 34px; }
.hero p { max-width: 760px; line-height: 1.6; }
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.05);
}
.narrow { max-width: 540px; margin: 0 auto; }
.grid { display: grid; gap: 24px; }
.two-cols { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.form { display: grid; gap: 16px; }
.form.two-cols { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.form .full { grid-column: 1 / -1; }
label { display: grid; gap: 8px; font-weight: 600; }
input, textarea, select {
    width: 100%;
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid #cbd5e1;
    font-size: 15px;
}
.btn {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 12px 18px;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none !important;
}
.btn:hover { background: var(--primary-dark); }
.btn-secondary { background: #334155; }
.btn-danger { background: var(--danger); }
.btn-small { padding: 8px 12px; font-size: 13px; }
.action-row { display: flex; gap: 12px; flex-wrap: wrap; }
.alert { padding: 14px 16px; border-radius: 12px; margin-bottom: 16px; }
.alert-success { background: #dcfce7; color: #166534; border: 1px solid #86efac; }
.alert-error { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; }
.stat-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px;
}
.stat-card span { display: block; color: var(--muted); font-size: 14px; margin-bottom: 8px; }
.stat-card strong { font-size: 28px; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 12px; border-bottom: 1px solid #e5e7eb; text-align: left; vertical-align: top; }
.badge { display: inline-block; padding: 6px 10px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.badge-approved { background: #dcfce7; color: #166534; }
.badge-pending { background: #fef3c7; color: #92400e; }
.badge-rejected { background: #fee2e2; color: #991b1b; }
.list { margin: 0; padding-left: 18px; }
.list li { margin-bottom: 10px; }
.stamps { display: flex; gap: 10px; flex-wrap: wrap; }
.stamp {
    width: 52px;
    height: 52px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    border: 2px dashed #94a3b8;
    background: #fff;
    font-weight: 700;
}
.stamp.filled { background: #1d4ed8; color: #fff; border-style: solid; border-color: #1d4ed8; }
.stamp.reward { border-color: #f59e0b; }
.mt { margin-top: 12px; }
.mt-lg { margin-top: 24px; }
@media (max-width: 768px) {
    .topbar-row { flex-direction: column; align-items: flex-start; }
    .hero { padding: 28px; }
    .hero h1 { font-size: 28px; }
}