:root {
    --bg: #f3f5f7;
    --card: #ffffff;
    --text: #15202b;
    --muted: #6b7280;
    --border: #dce1e7;
    --primary: #1f6feb;
    --primary-dark: #1659c7;
    --accent: #0f766e;
    --danger: #dc2626;
    --warning-soft: #fff3bf;
    --green-soft: #d9fbe8;
    --blue-soft: #dcecff;
    --shadow: 0 14px 36px rgba(15, 23, 42, 0.09);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    background: var(--bg);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.45;
}

button,
input {
    font: inherit;
}

.app-shell {
    width: min(100%, 720px);
    margin: 0 auto;
    padding: 18px 14px 28px;
}

.app-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 16px;
}

.eyebrow {
    margin: 0 0 4px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
}

h1 {
    margin: 0;
    font-size: 24px;
    line-height: 1.18;
}

.ppn-badge {
    flex: 0 0 auto;
    padding: 8px 10px;
    border: 1px solid #b7d2ff;
    border-radius: 8px;
    color: #154ea8;
    background: #e8f1ff;
    font-weight: 700;
}

.notice {
    margin: 0 0 12px;
    padding: 12px 14px;
    border-radius: 8px;
    font-size: 14px;
}

.error-box {
    border: 1px solid #fecaca;
    color: #991b1b;
    background: #fff1f2;
}

.success-box {
    border: 1px solid #bbf7d0;
    color: #166534;
    background: #f0fdf4;
}

.items-section {
    display: grid;
    gap: 12px;
}

#itemsContainer {
    display: grid;
    gap: 12px;
}

.item-card {
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--card);
    box-shadow: var(--shadow);
}

.item-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 12px;
}

.item-title {
    margin: 0;
    font-size: 17px;
}

.field-grid {
    display: grid;
    gap: 11px;
}

.field {
    display: grid;
    gap: 6px;
    position: relative;
}

.field label {
    color: #374151;
    font-size: 14px;
    font-weight: 700;
}

.required-star {
    color: var(--danger);
}

.field input {
    width: 100%;
    min-height: 46px;
    padding: 10px 11px;
    border: 1px solid #cfd6df;
    border-radius: 8px;
    color: var(--text);
    background: #fff;
    outline: none;
}

.field input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(31, 111, 235, 0.14);
}

.suggestions {
    position: absolute;
    z-index: 20;
    top: calc(100% + 4px);
    right: 0;
    left: 0;
    max-height: 220px;
    overflow-y: auto;
    border: 1px solid #cfd6df;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 16px 34px rgba(15, 23, 42, 0.16);
}

.suggestion-item {
    width: 100%;
    padding: 10px 11px;
    border: 0;
    border-bottom: 1px solid #edf1f5;
    color: var(--text);
    background: #fff;
    text-align: left;
    cursor: pointer;
}

.suggestion-item:hover,
.suggestion-item:focus {
    background: #eef5ff;
}

.suggestion-item small {
    display: block;
    margin-top: 2px;
    color: var(--muted);
}

.item-result {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    margin-top: 12px;
    padding: 10px;
    border-radius: 8px;
    background: #f8fafc;
    color: #334155;
    font-size: 14px;
}

.item-result div {
    display: flex;
    justify-content: space-between;
    gap: 10px;
}

.btn {
    min-height: 46px;
    padding: 10px 14px;
    border: 0;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.12s ease, background 0.12s ease;
}

.btn:active {
    transform: scale(0.99);
}

.btn-full {
    width: 100%;
}

.btn-primary {
    color: #fff;
    background: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    color: #154ea8;
    background: #e8f1ff;
}

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

.btn-light {
    color: #1f2937;
    background: #eef2f7;
}

.btn-danger {
    min-height: 38px;
    padding: 8px 10px;
    color: #fff;
    background: var(--danger);
}

.summary-grid {
    display: grid;
    gap: 10px;
    margin: 16px 0 12px;
}

.summary-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px;
    border-radius: 8px;
    border: 1px solid rgba(15, 23, 42, 0.08);
}

.summary-card span {
    color: #334155;
    font-weight: 700;
}

.summary-card strong {
    font-size: 18px;
    text-align: right;
}

.summary-payment {
    background: var(--warning-soft);
}

.summary-tax {
    background: var(--green-soft);
}

.summary-cashback {
    background: var(--blue-soft);
}

.action-bar {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}

.modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 50;
    overflow-y: auto;
    padding: 18px 12px;
    background: rgba(15, 23, 42, 0.58);
}

.nota-modal {
    width: min(100%, 680px);
    margin: 0 auto;
}

.modal-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 10px;
}

.nota-paper {
    padding: 18px;
    border-radius: 8px;
    background: #fff;
    color: #111827;
    box-shadow: var(--shadow);
}

.nota-paper h2 {
    margin: 0 0 10px;
    text-align: center;
    font-size: 22px;
}

.nota-meta {
    display: grid;
    gap: 2px;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px dashed #cbd5e1;
}

.nota-meta p {
    margin: 0;
}

.nota-items {
    display: grid;
    gap: 12px;
}

.nota-item {
    padding-bottom: 12px;
    border-bottom: 1px solid #e5e7eb;
}

.nota-item h3 {
    margin: 0 0 6px;
    font-size: 16px;
}

.nota-line {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    margin: 3px 0;
}

.nota-summary {
    display: grid;
    gap: 8px;
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px dashed #cbd5e1;
}

.nota-summary div {
    display: flex;
    justify-content: space-between;
    gap: 10px;
}

[hidden] {
    display: none !important;
}

@media (min-width: 620px) {
    .app-shell {
        padding-top: 28px;
    }

    h1 {
        font-size: 30px;
    }

    .field-grid {
        grid-template-columns: 1.4fr 0.85fr;
    }

    .field-wide {
        grid-column: 1 / -1;
    }

    .action-bar {
        grid-template-columns: 1fr 1fr;
    }
}

@media print {
    body {
        background: #fff;
    }

    body * {
        visibility: hidden;
    }

    #notaPrintArea,
    #notaPrintArea * {
        visibility: visible;
    }

    #notaPrintArea {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        padding: 0;
        box-shadow: none;
    }

    .no-print {
        display: none !important;
    }
}