:root {
    --navy: #14335e;
    --navy-dark: #0d2444;
    --gold: #c9a227;
    --gold-light: #e8cf7a;
    --ok: #1f8a4c;
    --ok-bg: #e6f5ea;
    --warning: #b8860b;
    --warning-bg: #fdf3d9;
    --danger: #c0392b;
    --danger-bg: #fbe6e3;
    --neutral: #6b7280;
    --neutral-bg: #eef0f3;
    --border: #e1e5eb;
    --bg: #f4f6f9;
    --text: #1f2937;
    --text-soft: #5b6472;
    --radius: 12px;
    --shadow: 0 2px 10px rgba(20, 51, 94, 0.08);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

html, body {
    max-width: 100%;
    overflow-x: hidden;
}

body {
    margin: 0;
    font-family: 'Sarabun', 'Tahoma', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

img, svg { max-width: 100%; height: auto; }

a { text-decoration: none; color: inherit; }

.container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 24px 20px 60px;
    padding-left: max(20px, env(safe-area-inset-left));
    padding-right: max(20px, env(safe-area-inset-right));
    width: 100%;
}

/* ---------- Topbar ---------- */
.topbar {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
    box-shadow: 0 2px 12px rgba(0,0,0,0.15);
    position: sticky;
    top: 0;
    z-index: 50;
    padding-top: env(safe-area-inset-top);
}
.topbar-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    min-height: 66px;
    flex-wrap: wrap;
}
.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #fff;
    margin-right: auto;
}
.brand-badge {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--gold);
    color: var(--navy-dark);
    font-weight: 700;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 16px; }
.brand-text small { color: #cdd7e8; font-size: 12px; }

.main-nav {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    padding: 10px 0;
}
.main-nav a {
    color: #dce4f0;
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 14.5px;
    font-weight: 500;
    transition: background 0.15s, color 0.15s;
    white-space: nowrap;
}
.main-nav a:hover { background: rgba(255,255,255,0.08); color: #fff; }
.main-nav a.active { background: var(--gold); color: var(--navy-dark); font-weight: 600; }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 22px;
    cursor: pointer;
    padding: 8px;
    min-width: 44px;
    min-height: 44px;
    line-height: 1;
}

/* ---------- Alerts ---------- */
.alert {
    padding: 12px 16px;
    border-radius: 10px;
    margin-bottom: 18px;
    font-size: 14.5px;
    border: 1px solid transparent;
}
.alert-success { background: var(--ok-bg); color: var(--ok); border-color: #bfe3cc; }
.alert-warning { background: var(--warning-bg); color: var(--warning); border-color: #f0dfa6; }
.alert-danger  { background: var(--danger-bg); color: var(--danger); border-color: #f1c3bc; }

/* ---------- Page heading ---------- */
.page-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
}
.page-head h1 {
    font-size: 22px;
    margin: 0;
    color: var(--navy-dark);
}
.page-head p.subtitle {
    margin: 4px 0 0;
    color: var(--text-soft);
    font-size: 14px;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 18px;
    min-height: 40px;
    border-radius: 9px;
    border: 1px solid transparent;
    font-family: inherit;
    font-size: 14.5px;
    font-weight: 600;
    cursor: pointer;
    background: var(--navy);
    color: #fff;
    transition: transform 0.05s, opacity 0.15s;
}
.btn:hover { opacity: 0.9; }
.btn:active { transform: translateY(1px); }
.btn:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible {
    outline: 2px solid var(--navy);
    outline-offset: 2px;
}
.btn-gold { background: var(--gold); color: var(--navy-dark); }
.btn-outline { background: #fff; color: var(--navy); border-color: var(--border); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: 13px; border-radius: 7px; min-height: 34px; }
.btn-block { width: 100%; justify-content: center; }

/* ---------- Cards / summary ---------- */
.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.card {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
    border: 1px solid var(--border);
}
.cat-card { position: relative; overflow: hidden; }
.cat-card .cat-name {
    font-size: 15.5px;
    font-weight: 700;
    color: var(--navy-dark);
    margin: 0 0 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.badge {
    font-size: 11.5px;
    font-weight: 600;
    padding: 3px 9px;
    border-radius: 999px;
}
.status-ok { background: var(--ok-bg); color: var(--ok); }
.status-warning { background: var(--warning-bg); color: var(--warning); }
.status-danger { background: var(--danger-bg); color: var(--danger); }
.status-neutral { background: var(--neutral-bg); color: var(--neutral); }

.cat-row {
    display: flex;
    justify-content: space-between;
    font-size: 13.5px;
    color: var(--text-soft);
    margin-bottom: 4px;
}
.cat-row strong { color: var(--text); font-weight: 600; }
.cat-remaining {
    font-size: 22px;
    font-weight: 700;
    color: var(--navy-dark);
    margin: 10px 0 6px;
}
.cat-remaining.negative { color: var(--danger); }
.progress-track {
    width: 100%;
    height: 9px;
    border-radius: 999px;
    background: var(--neutral-bg);
    overflow: hidden;
    margin-top: 8px;
}
.progress-fill {
    height: 100%;
    border-radius: 999px;
    background: var(--ok);
}
.progress-fill.status-warning { background: var(--warning); }
.progress-fill.status-danger { background: var(--danger); }

.grand-total {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
    color: #fff;
    border-radius: var(--radius);
    padding: 22px 24px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 14px;
    margin-bottom: 24px;
}
.grand-total .gt-item small { display: block; color: #c7d3e6; font-size: 12.5px; margin-bottom: 4px; }
.grand-total .gt-item strong { font-size: 21px; }
.grand-total .gt-item strong.gold { color: var(--gold-light); }

/* ---------- Tables ---------- */
.table-wrap {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
table.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    min-width: 640px;
}
table.data-table th, table.data-table td {
    text-align: left;
    padding: 11px 14px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}
table.data-table th {
    background: #f7f9fc;
    color: var(--navy-dark);
    font-weight: 700;
    font-size: 13px;
    white-space: nowrap;
}
table.data-table tr:last-child td { border-bottom: none; }
table.data-table tr:hover { background: #fbfcfe; }
td.num, th.num { text-align: right; white-space: nowrap; }
.actions-cell { white-space: nowrap; }
.actions-cell .btn { margin-right: 4px; }

.subtotal-row td { background: #f7f9fc; font-weight: 700; }
.empty-state { text-align: center; padding: 40px 20px; color: var(--text-soft); }

/* ---------- Forms ---------- */
.form-card {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    padding: 24px;
    max-width: 640px;
}
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-weight: 600;
    font-size: 13.5px;
    margin-bottom: 6px;
    color: var(--navy-dark);
}
.form-group .hint { font-size: 12.5px; color: var(--text-soft); margin-top: 4px; }
input[type=text], input[type=number], input[type=search], textarea, select {
    width: 100%;
    padding: 10px 12px;
    min-height: 44px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: inherit;
    font-size: 16px;
    background: #fff;
    color: var(--text);
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--navy);
    box-shadow: 0 0 0 3px rgba(20,51,94,0.12);
}
textarea { resize: vertical; min-height: 70px; }
.form-actions { display: flex; gap: 10px; margin-top: 20px; }

.info-box {
    background: var(--neutral-bg);
    border-radius: 10px;
    padding: 14px 16px;
    font-size: 13.5px;
    margin-bottom: 18px;
}
.info-box .row { display: flex; justify-content: space-between; margin-bottom: 4px; }
.info-box .row:last-child { margin-bottom: 0; font-weight: 700; }

/* สถานะการจัดสรร: dropdown ที่กดเปลี่ยนได้ทันทีในหน้ารายการ ดูเหมือน badge สี */
.status-inline-form { display: inline-block; }
.status-select {
    appearance: none;
    -webkit-appearance: none;
    width: auto;
    min-height: 0;
    padding: 4px 24px 4px 10px;
    font-size: 12px;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath fill='%23000' fill-opacity='0.45' d='M3 4.5l3 3 3-3z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    background-size: 10px;
}
.status-select.status-danger  { background-color: var(--danger-bg);  color: var(--danger); }
.status-select.status-warning { background-color: var(--warning-bg); color: var(--warning); }
.status-select.status-neutral { background-color: var(--neutral-bg); color: var(--neutral); }
.status-select:focus-visible {
    outline: 2px solid var(--navy);
    outline-offset: 2px;
}

/* สถานะการจัดสรร: ต้องจัดสรร / ควรจัดสรร / รอจัดสรร */
.status-radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.status-radio-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: 999px;
    cursor: pointer;
    background: #fff;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.status-radio-option input[type=radio] {
    width: 16px;
    height: 16px;
    accent-color: var(--navy);
    margin: 0;
}
.status-radio-option:has(input:checked) {
    border-color: var(--navy);
    box-shadow: 0 0 0 2px rgba(20,51,94,0.12);
}

/* itemized expense rows on the add/edit project form */
.item-row {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-bottom: 8px;
}
.item-row input[type=text] { flex: 2; }
.item-row input[type=number] { flex: 1; }
.item-row .btn { flex-shrink: 0; }

/* itemized expense breakdown shown inline in the projects list */
.item-details {
    margin-top: 6px;
    font-size: 12.5px;
}
.item-details summary {
    cursor: pointer;
    color: var(--navy);
    font-weight: 600;
    outline: none;
}
.item-details ul {
    margin: 6px 0 0;
    padding-left: 18px;
    color: var(--text-soft);
}
.item-details li { margin-bottom: 2px; }

.print-item-row td {
    font-size: 12.5px;
    color: var(--text-soft);
    padding-top: 2px;
    padding-bottom: 2px;
    border-bottom: none !important;
}

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 16px;
    align-items: flex-end;
}
.filter-bar .form-group { margin-bottom: 0; min-width: 180px; flex: 1; }
.filter-bar .btn { height: 42px; }

/* department list */
.dept-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--border); }
.dept-row:last-child { border-bottom: none; }
.dept-name { flex: 1; font-size: 14.5px; }
.dept-order { display: flex; gap: 4px; }
.order-btn {
    width: 32px; height: 32px; min-width: 32px; border-radius: 6px; border: 1px solid var(--border);
    background: #fff; cursor: pointer; font-size: 13px; color: var(--navy);
}
.tag-inactive { color: var(--text-soft); font-style: italic; font-size: 12.5px; }

/* footer */
.site-footer {
    text-align: center;
    padding: 20px;
    color: var(--text-soft);
    font-size: 12.5px;
}

/* ---------- Responsive: tablet & small desktop ---------- */
@media (max-width: 900px) {
    .container { padding-left: 16px; padding-right: 16px; }
}

/* ---------- Responsive: mobile (phones & narrow tablets) ---------- */
@media (max-width: 760px) {
    .nav-toggle { display: block; }
    .main-nav { display: none; width: 100%; flex-direction: column; }
    .main-nav.open { display: flex; }
    .main-nav a { padding: 12px 14px; }
    .topbar-inner { padding-bottom: 8px; }

    .container { padding: 16px 14px 40px; }

    .page-head { flex-direction: column; align-items: stretch; }
    .page-head > a.btn, .page-head > button.btn { width: 100%; }
    .page-head > div:not(:first-child) { display: flex; flex-direction: column; width: 100%; gap: 8px; }
    .page-head > div:not(:first-child) .btn { width: 100%; }

    .summary-grid { grid-template-columns: 1fr; }
    .grand-total { grid-template-columns: 1fr 1fr; padding: 18px; }

    .form-card { padding: 16px; max-width: 100% !important; }
    .form-actions { flex-direction: column; }
    .form-actions .btn { width: 100%; }

    .filter-bar { flex-direction: column; align-items: stretch; }
    .filter-bar .form-group { min-width: 100%; width: 100%; }
    .filter-bar .btn { width: 100%; }

    /* itemized expense rows stack vertically on narrow screens */
    .item-row { flex-wrap: wrap; }
    .item-row input[type=text] { flex: 1 1 100%; }
    .item-row input[type=number] { flex: 1 1 auto; }
    .item-row .btn { flex: 0 0 auto; }

    /* department management rows stack their inline edit form */
    .dept-row form { flex: 1 1 100%; }
    .dept-row > span.dept-name { flex: 1 1 auto; }

    table.data-table { min-width: 560px; }

    .info-box .row { flex-wrap: wrap; gap: 2px; }
}

@media (max-width: 420px) {
    .grand-total { grid-template-columns: 1fr; }
    .brand-text small { display: none; }
    .cat-remaining { font-size: 19px; }
}

/* ---------- Print ---------- */
@media print {
    .no-print { display: none !important; }
    body { background: #fff; }
    .container { max-width: 100%; padding: 0; }
    .table-wrap, .card { box-shadow: none; border: 1px solid #ccc; }
}