:root {
    --bg: #f6f7fb;
    --card: #ffffff;
    --text: #1f2a37;
    --muted: #6b7280;
    --border: #e5e7eb;
    --primary: #2563eb;
    --success: #16a34a;
    --warning: #f59e0b;
    --danger: #ef4444;
}

body {
    font-family: "Inter", Arial, sans-serif;
    background: var(--bg);
    margin: 0;
    color: var(--text);
}

.container {
    width: 96%;
    margin: 10px auto;
}

h1 {
    margin: 8px 0 6px;
    font-size: 28px;
}

h2 {
    margin: 0 0 10px;
    font-size: 18px;
}

a {
    color: var(--primary);
}

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

.actions {
    margin-bottom: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
}

.btn:hover {
    border-color: #cbd5e1;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    margin-top: 14px;
    box-shadow: 0 1px 2px rgba(16, 24, 40, 0.05);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
}

.section-title {
    font-weight: 600;
    margin-bottom: 8px;
}

.row {
    line-height: 1.6;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
}

.badge.unpaid {
    background: #fef3c7;
    color: #92400e;
}

.badge.partial {
    background: #dbeafe;
    color: #1e40af;
}

.badge.paid {
    background: #dcfce7;
    color: #166534;
}

.badge.cancelled {
    background: #e5e7eb;
    color: #374151;
}

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 10px 0;
}

.chip {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 8px 10px;
    background: #fff;
    font-size: 13px;
}

.chip.used {
    background: #ecfdf3;
    border-color: #86efac;
    color: #166534;
}

.summary {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.summary .item {
    background: #fff;
    border: 1px dashed var(--border);
    padding: 8px 12px;
    border-radius: 10px;
}

.form-row {
    margin-top: 12px;
}

input[type="password"] {
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
}

button {
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: #fff;
    cursor: pointer;
}

.header-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.divider {
    height: 1px;
    background: var(--border);
    margin: 8px 0;
}

.filters {
    margin-top: 12px;
    display: grid;
    gap: 12px;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filter-title {
    font-size: 13px;
    color: var(--muted);
}

.filter-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.filter-options input {
    display: none;
}

.filter-options .option {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: #fff;
    cursor: pointer;
    font-size: 13px;
}

.filter-options input:checked+span {
    color: #fff;
    background: var(--primary);
    border-radius: 999px;
    padding: 4px 10px;
}

.auth-card {
    max-width: 420px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    box-shadow: 0 1px 2px rgba(16, 24, 40, 0.05);
}

.auth-card .title {
    font-weight: 600;
    margin-bottom: 8px;
}

.auth-card .field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 12px;
}

.auth-card input[type="password"] {
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
}

.auth-card button {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.badge.lock {
    background: #ffe2e2;
    color: #b00020;
}

.badge.open {
    background: #e7f6e7;
    color: #0a7a2f;
}

.actions a {
    text-decoration: none;
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
}

.actions a+a {
    margin-left: 6px;
}

.table-wrap {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: auto;
}

.loading-box {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 18px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 1px 2px rgba(16, 24, 40, 0.05);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid #e5e7eb;
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

body.ketoan-view .table-wrap table {
    width: 100%;
    border-collapse: collapse;
    min-width: 1200px;
}

body.ketoan-view .table-wrap th,
body.ketoan-view .table-wrap td {
    border: 1px solid var(--border);
    padding: 8px 10px;
    font-size: 13px;
    vertical-align: top;
}

body.ketoan-view .table-wrap thead th {
    background: #f8fafc;
    font-weight: 600;
    text-align: left;
}

.center {
    text-align: center;
}

.right {
    text-align: right;
}

.nowrap {
    white-space: nowrap;
}

.subheader {
    background: #eef2ff;
    text-align: center;
}

.filters {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px;
}

.filter-group {
    flex-direction: row;
    align-items: center;
}

.filter-label {
    font-size: 13px;
    color: var(--muted);
    margin-right: 6px;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: #fff;
    cursor: pointer;
    font-size: 13px;
    text-decoration: none;
    color: var(--text);
}

.chip.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

body.ketoan-index {
    margin: 20px;
}

body.ketoan-view .container {
    width: 97%;
    max-width: none;
    padding: 10px 0;
}