:root {
    --primary: #1a56db;
    --primary-dark: #1e3a8a;
    --primary-light: #3b82f6;
    --primary-lighter: #dbeafe;
    --bg: #f0f5ff;
    --white: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #cbd5e1;
    --success: #16a34a;
    --danger: #dc2626;
    --shadow: 0 4px 20px rgba(26, 86, 219, 0.08);
    --shadow-lg: 0 10px 40px rgba(26, 86, 219, 0.15);
    --radius: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(160deg, #eef3ff 0%, #f7faff 50%, #e8f0ff 100%);
    background-attachment: fixed;
    color: var(--text);
    min-height: 100vh;
    line-height: 1.5;
}

.topbar {
    background: linear-gradient(120deg, var(--primary-dark), var(--primary));
    color: #fff;
    padding: 22px 32px;
    box-shadow: 0 6px 24px rgba(26,86,219,0.25);
    position: relative;
    overflow: hidden;
}
.topbar::after {
    content: '';
    position: absolute;
    right: -60px; top: -60px;
    width: 220px; height: 220px;
    background: rgba(255,255,255,0.08);
    border-radius: 50%;
}
.topbar h1 {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: 0.3px;
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
    z-index: 1;
}
.topbar h1 .icon {
    width: 40px; height: 40px;
    background: rgba(255,255,255,0.18);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px;
    backdrop-filter: blur(4px);
}
.topbar p {
    opacity: 0.85;
    font-size: 13px;
    margin-top: 4px;
    position: relative;
    z-index: 1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 28px 20px 60px;
}

.card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid rgba(203,213,225,0.5);
    margin-bottom: 24px;
    overflow: hidden;
}
.card-header {
    padding: 18px 24px;
    background: linear-gradient(90deg, var(--primary-lighter), #eef4ff);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}
.card-header h2 {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    gap: 8px;
}
.card-body { padding: 24px; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 22px;
    border-radius: 10px;
    border: none;
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    transition: all .18s ease;
}
.btn-primary {
    background: linear-gradient(120deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: 0 4px 14px rgba(26,86,219,0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(26,86,219,0.4); }
.btn-success {
    background: linear-gradient(120deg, #22c55e, #16a34a);
    color: #fff;
    box-shadow: 0 4px 14px rgba(22,163,74,0.35);
}
.btn-success:hover { transform: translateY(-2px); }
.btn-outline {
    background: #fff;
    color: var(--primary);
    border: 2px solid var(--primary-lighter);
}
.btn-outline:hover { background: var(--primary-lighter); }
.btn-danger {
    background: #fee2e2;
    color: var(--danger);
}
.btn-danger:hover { background: #fecaca; }
.btn-sm { padding: 7px 14px; font-size: 13px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.form-group { margin-bottom: 18px; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
label {
    display: block;
    font-size: 13px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 6px;
    letter-spacing: 0.2px;
}
label .req { color: var(--danger); }
input[type=text], input[type=date], input[type=number], textarea, select {
    width: 100%;
    padding: 11px 14px;
    border: 1.5px solid var(--border);
    border-radius: 10px;
    font-size: 14px;
    font-family: inherit;
    background: #fbfcff;
    transition: all .15s;
    color: var(--text);
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(26,86,219,0.1);
}
textarea { resize: vertical; min-height: 70px; }
.hint { font-size: 12px; color: var(--text-light); margin-top: 4px; }

.section-title {
    font-size: 14px;
    font-weight: 800;
    color: var(--primary-dark);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 30px 0 14px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary-lighter);
    display: flex;
    align-items: center;
    gap: 8px;
}
.section-title:first-child { margin-top: 0; }

/* Tabel item pembayaran */
.item-table { width: 100%; border-collapse: collapse; }
.item-table th {
    background: var(--primary-lighter);
    color: var(--primary-dark);
    font-size: 12px;
    text-transform: uppercase;
    padding: 10px;
    text-align: left;
    letter-spacing: 0.3px;
}
.item-table th:first-child { border-radius: 8px 0 0 8px; }
.item-table th:last-child { border-radius: 0 8px 8px 0; }
.item-table td { padding: 8px 6px; vertical-align: top; }
.item-table input { padding: 9px 10px; font-size: 13px; }
.item-table .col-banyak { width: 90px; }
.item-table .col-satuan { width: 100px; }
.item-table .col-harga { width: 150px; }
.item-table .col-sub { width: 150px; }
.item-table .col-aksi { width: 46px; text-align: center; }
.subtotal-display {
    font-weight: 700;
    color: var(--primary-dark);
    padding: 9px 10px;
    background: #f8fafc;
    border-radius: 8px;
    text-align: right;
    font-size: 13px;
}
.btn-remove-row {
    background: #fee2e2;
    color: var(--danger);
    border: none;
    width: 32px; height: 32px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 700;
    font-size: 16px;
    transition: all .15s;
}
.btn-remove-row:hover { background: #fca5a5; color: #fff; }

.total-box {
    margin-top: 16px;
    background: linear-gradient(120deg, var(--primary-lighter), #eaf1ff);
    border-radius: 12px;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1.5px dashed var(--primary-light);
}
.total-box .label { font-weight: 800; color: var(--primary-dark); font-size: 15px; }
.total-box .value { font-weight: 900; color: var(--primary-dark); font-size: 22px; }

.actions-bar {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

/* Tabel daftar kwitansi */
.table-wrap { overflow-x: auto; }
table.list-table { width: 100%; border-collapse: collapse; font-size: 14px; }
table.list-table th {
    background: var(--primary-dark);
    color: #fff;
    padding: 12px 14px;
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    white-space: nowrap;
}
table.list-table th:first-child { border-radius: 10px 0 0 0; }
table.list-table th:last-child { border-radius: 0 10px 0 0; }
table.list-table td {
    padding: 12px 14px;
    border-bottom: 1px solid #eef2f7;
}
table.list-table tr:hover td { background: #f8faff; }
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    background: var(--primary-lighter);
    color: var(--primary-dark);
}
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
}
.empty-state .icon { font-size: 48px; margin-bottom: 12px; opacity: 0.5; }

.alert {
    padding: 14px 18px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}
.alert-success { background: #dcfce7; color: #166534; border: 1px solid #86efac; }
.alert-danger { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }

.action-icons { display: flex; gap: 8px; }
.action-icons a, .action-icons button {
    width: 34px; height: 34px;
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: 8px;
    text-decoration: none;
    font-size: 15px;
    border: none;
    cursor: pointer;
}
.ic-view { background: var(--primary-lighter); color: var(--primary-dark); }
.ic-edit { background: #fef3c7; color: #92400e; }
.ic-print { background: #dcfce7; color: #166534; }
.ic-delete { background: #fee2e2; color: #991b1b; }
.ic-view:hover, .ic-edit:hover, .ic-print:hover, .ic-delete:hover { filter: brightness(0.93); transform: scale(1.05); }

.paper-select {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
}
.paper-option {
    flex: 1;
    border: 2px solid var(--border);
    border-radius: 10px;
    padding: 12px;
    text-align: center;
    cursor: pointer;
    font-weight: 700;
    font-size: 13px;
    color: var(--text-light);
    transition: all .15s;
}
.paper-option.active {
    border-color: var(--primary);
    background: var(--primary-lighter);
    color: var(--primary-dark);
}

@media (max-width: 768px) {
    .card-header { flex-direction: column; align-items: flex-start; }
    .item-table { font-size: 12px; }
    .item-table th, .item-table td { padding: 6px 3px; }
}