* { box-sizing: border-box; font-family: 'Segoe UI', Tahoma, sans-serif; }
body { margin: 0; background: #f4f6f9; color: #1f2937; }

.topbar {
    background: #1e293b; color: #fff; padding: 12px 24px;
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap:10px;
}
.topbar h1 { font-size: 17px; margin: 0; white-space:nowrap; }
.topbar nav { display:flex; gap:4px; flex-wrap:wrap; }
.topbar nav a {
    color: #cbd5e1; text-decoration: none; font-size: 12.5px; padding:7px 10px; border-radius:6px;
}
.topbar nav a:hover { background:#293548; }
.topbar nav a.active { background:#2563eb; color:#fff; }
.topbar a.logout { color: #f87171; text-decoration: none; font-size:12.5px; }

.stats { display: flex; gap: 16px; padding: 20px 24px; flex-wrap: wrap; }
.stat-card {
    background: #fff; border-radius: 10px; padding: 16px 20px; min-width: 160px;
    box-shadow: 0 1px 3px rgba(0,0,0,.08);
}
.stat-card span { display: block; font-size: 24px; font-weight: 700; color: #2563eb; }
.stat-card.warn span { color: #d97706; }
.stat-card.error span { color: #dc2626; }

.filters { padding: 0 24px 12px; display: flex; gap: 8px; flex-wrap: wrap; }
.filters a {
    padding: 6px 12px; border-radius: 20px; background: #e5e7eb; color: #374151;
    text-decoration: none; font-size: 13px;
}
.filters a.active { background: #2563eb; color: #fff; }

table { width: calc(100% - 48px); margin: 0 24px 24px; border-collapse: collapse; background: #fff; border-radius: 8px; overflow: hidden; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid #eee; font-size: 13px; }
th { background: #f1f5f9; }

.status-completed { color: #16a34a; font-weight: 600; }
.status-failed { color: #dc2626; font-weight: 600; }
.status-awaiting_manual { color: #d97706; font-weight: 600; }
.status-pending { color: #d97706; font-weight: 600; }
.status-paid { color: #16a34a; font-weight: 600; }
.status-cancelled { color: #dc2626; font-weight: 600; }

.topup-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px; padding: 0 24px 24px;
}
.topup-card {
    background:#fff; border-radius:10px; padding:14px; box-shadow: 0 1px 3px rgba(0,0,0,.08);
}
.topup-card-head { display:flex; justify-content:space-between; align-items:center; margin-bottom:6px; font-size:13.5px; }
.topup-card p { font-size:12.5px; margin:2px 0; }
.topup-card .muted { color:#9ca3af; }
.proof-img { width:100%; border-radius:6px; margin:8px 0; max-height:280px; object-fit:cover; }
.topup-actions { display:flex; gap:8px; margin-top:8px; }
.topup-actions form { flex:1; }
.topup-actions button { width:100%; }

.panel {
    background:#fff; margin: 0 24px 20px; padding:20px; border-radius:10px;
    box-shadow: 0 1px 3px rgba(0,0,0,.08);
}
.panel h3 { margin-bottom:10px; font-size:15px; }
.panel.notice { background:#fff7ed; border:1px solid #fed7aa; color:#9a3412; }
.panel.notice a { color:#c2410c; font-weight:600; }

.form { display:flex; flex-direction:column; gap:10px; margin-top:10px; }
.form label { font-size:12.5px; color:#4b5563; font-weight:600; }
.form input, .form textarea {
    padding:9px 10px; border:1px solid #d1d5db; border-radius:6px; font-size:13.5px; width:100%;
}
.btn-primary {
    background:#2563eb; color:#fff; border:none; padding:10px 16px; border-radius:6px;
    font-size:13.5px; font-weight:600; cursor:pointer; width:fit-content;
}
.btn-primary:hover { background:#1d4ed8; }
.btn-small {
    background:#2563eb; color:#fff; border:none; padding:6px 10px; border-radius:5px;
    font-size:12px; cursor:pointer;
}
.btn-small.danger { background:#dc2626; }
.success { color:#16a34a; font-weight:600; font-size:13px; }
.hint-text { font-size:12px; color:#6b7280; margin-top:10px; }

/* Login page */
.login-page { display: flex; align-items: center; justify-content: center; height: 100vh; }
.login-box {
    background: #fff; padding: 32px; border-radius: 12px; box-shadow: 0 2px 10px rgba(0,0,0,.1);
    display: flex; flex-direction: column; gap: 12px; width: 280px;
}
.login-box input { padding: 10px; border: 1px solid #ddd; border-radius: 6px; }
.login-box button { padding: 10px; background: #2563eb; color: #fff; border: none; border-radius: 6px; cursor: pointer; }
.login-box .error { color: #dc2626; font-size: 13px; }