:root {
  --bg: #f3f5fb;
  --surface: #ffffff;
  --ink: #1f2540;
  --muted: #667089;
  --line: #e3e7f2;
  --line-strong: #c9d0e3;
  /* สีหลักของหมวดที่เปิดอยู่ (เปลี่ยนตาม data-sec) */
  --accent: #4f46e5;
  --accent-soft: #eceafd;
  --accent-ink: #3b33b8;
  --grad: linear-gradient(120deg, #eef0ff 0%, #e6f1ff 100%);
  --grad-strong: linear-gradient(120deg, #5b4fd6 0%, #3d7bf0 100%);
  --sky-soft: #eaf2fe;
  --ok: #1f8a5e;
  --ok-soft: #e1f5ec;
  --warn: #9a650a;
  --warn-soft: #fdf1dc;
  --bad: #c2334d;
  --bad-soft: #fde8ec;
  --info-soft: #eef1f8;
  --excel: #1d7a45;
  /* สีประจำหมวดเมนู */
  --g-overview: #5b4fd6; --g-overview-soft: #eceafd;
  --g-recon: #0d8f84;    --g-recon-soft: #def4f1;
  --g-pv: #2563eb;       --g-pv-soft: #e3edfe;
  --g-sys: #c0396a;      --g-sys-soft: #fbe6ee;
  --mono: 'IBM Plex Mono', ui-monospace, monospace;
  font-family: 'IBM Plex Sans Thai', system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
}
#app[data-sec="overview"] { --accent: var(--g-overview); --accent-soft: var(--g-overview-soft); --grad-strong: linear-gradient(120deg, #5b4fd6, #7a6cf0); }
#app[data-sec="recon"]    { --accent: var(--g-recon);    --accent-soft: var(--g-recon-soft);    --grad-strong: linear-gradient(120deg, #0d8f84, #19a9a0); }
#app[data-sec="pv"]       { --accent: var(--g-pv);       --accent-soft: var(--g-pv-soft);       --grad-strong: linear-gradient(120deg, #2563eb, #3b82f6); }
#app[data-sec="sys"]      { --accent: var(--g-sys);      --accent-soft: var(--g-sys-soft);      --grad-strong: linear-gradient(120deg, #c0396a, #db5a8a); }

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); font-size: 15px; line-height: 1.5; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.error { color: var(--bad); min-height: 1.2em; }
h1, h2, h3 { font-weight: 600; margin: 0 0 .5rem; }
h2 { font-size: 1.3rem; display: flex; align-items: center; gap: 8px; }
h2 .ico, h3 .ico { color: var(--accent); }
h3 { font-size: 1.05rem; margin-top: 1.5rem; display: flex; align-items: center; gap: 8px; }
a { color: var(--accent); }
.ico { width: 18px; height: 18px; flex: none; vertical-align: -3px; }

/* ---------- login ---------- */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; background: var(--grad); }
.login-card { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 10px 34px rgba(60, 70, 160, .12); padding: 32px; width: 100%; max-width: 400px; display: grid; gap: 14px; }
.login-card h1 { font-size: 1.45rem; color: #2f3fbf; }
.login-card h1 + .muted { margin-top: 2px; }
label { display: grid; gap: 4px; font-size: .9rem; color: var(--muted); }
input, select, textarea { font: inherit; color: var(--ink); padding: 8px 10px; border: 1px solid var(--line-strong); border-radius: 8px; background: #fff; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent); }
input:disabled, textarea:disabled, select:disabled { background: #f4f6fa; color: var(--muted); }
.pw-wrap { position: relative; display: block; margin-top: 4px; }
.pw-wrap input { width: 100%; padding-right: 84px; }
.pw-toggle { position: absolute; right: 6px; top: 50%; transform: translateY(-50%); border: 1px solid var(--line); background: #f1f4ff; color: #3446c8; border-radius: 8px; padding: 4px 10px; font: inherit; font-size: .82rem; cursor: pointer; }
.pw-toggle:hover { background: #e5eaff; }
.center-link { text-align: center; color: #3446c8; font-size: .9rem; }
.small-note { font-size: .78rem; line-height: 1.5; }
.login-card .ok-msg { color: var(--ok); }

/* ---------- buttons ---------- */
.btn { font: inherit; display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line-strong); background: var(--surface); color: var(--ink); padding: 8px 14px; border-radius: 10px; cursor: pointer; text-decoration: none; }
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn.primary { background: var(--grad-strong); border-color: transparent; color: #fff; box-shadow: 0 3px 10px color-mix(in srgb, var(--accent) 30%, transparent); }
.btn.primary:hover { filter: brightness(1.07); color: #fff; }
.btn.danger { background: var(--bad); border-color: var(--bad); color: #fff; }
.btn.excel { border-color: #9fd3b5; color: var(--excel); background: #f1faf4; }
.btn.excel .ico { color: var(--excel); }
.btn.excel:hover { border-color: var(--excel); color: var(--excel); }
.btn.ghost { background: transparent; }
.btn.small { padding: 4px 10px; font-size: .85rem; border-radius: 8px; }
.btn.small .ico { width: 15px; height: 15px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---------- layout ---------- */
.topbar { position: sticky; top: 0; z-index: 5; display: flex; flex-wrap: wrap; gap: 10px 24px; align-items: center; justify-content: space-between; padding: 10px 24px; background: var(--grad); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 12px; }
.brand > div { display: flex; flex-direction: column; line-height: 1.25; }
.brand strong { color: #2f3fbf; font-size: 1.15rem; }
.brand .muted { font-size: .85rem; }
.brand-ic { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 12px; background: linear-gradient(135deg, #3d5af1, #5b8def); color: #fff; box-shadow: 0 4px 10px rgba(61, 90, 241, .3); }
.brand-ic .ico { width: 24px; height: 24px; }
.period { display: flex; gap: 12px; align-items: center; }
.period label { display: flex; align-items: center; gap: 6px; color: var(--ink); }
.period select { font-weight: 600; }
.hd-ic { color: #3d5af1; display: inline-flex; }
.user { display: flex; gap: 10px; align-items: center; }
.avatar { width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; background: linear-gradient(135deg, #3d5af1, #7a8cf5); color: #fff; font-weight: 600; }
#logoutBtn { border-radius: 99px; background: #fff; }

.layout { display: grid; grid-template-columns: 240px minmax(0, 1fr); align-items: start; }
#tabs.tabs { position: sticky; top: 61px; height: calc(100vh - 61px); overflow-y: auto; display: flex; flex-direction: column; gap: 2px; padding: 14px 12px 24px; border-right: 1px solid var(--line); background: var(--surface); }
.nav-group { display: flex; flex-direction: column; gap: 2px; margin-bottom: 8px; --c: var(--g-overview); --cs: var(--g-overview-soft); }
.nav-group[data-g="recon"] { --c: var(--g-recon); --cs: var(--g-recon-soft); }
.nav-group[data-g="pv"]    { --c: var(--g-pv);    --cs: var(--g-pv-soft); }
.nav-group[data-g="sys"]   { --c: var(--g-sys);   --cs: var(--g-sys-soft); }
.nav-h { font-size: .74rem; font-weight: 700; color: var(--c); padding: 8px 12px 4px; letter-spacing: .02em; display: flex; align-items: center; gap: 6px; }
.nav-h::before { content: ''; width: 8px; height: 8px; border-radius: 3px; background: var(--c); }
#tabs a { display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: 10px; text-decoration: none; color: var(--ink); font-size: .95rem; }
#tabs a .ico { width: 22px; height: 22px; color: var(--c); }
#tabs a:hover { background: var(--cs); }
#tabs a.active { background: var(--c); color: #fff; box-shadow: 0 3px 10px color-mix(in srgb, var(--c) 35%, transparent); }
#tabs a.active .ico { color: #fff; }
.ro-tag { margin-left: auto; font-style: normal; font-size: .7rem; padding: 0 6px; border-radius: 99px; background: var(--info-soft); color: var(--muted); }
#tabs a.active .ro-tag { background: rgba(255, 255, 255, .25); color: #fff; }
.view { padding: 22px 26px; min-width: 0; }
.toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 12px 0; }
.toolbar .spacer { flex: 1; }
.ro-banner { display: flex; align-items: center; gap: 8px; background: var(--info-soft); border: 1px dashed var(--line-strong); border-radius: 10px; padding: 8px 12px; margin-bottom: 12px; color: var(--muted); }
.view.ro .w { display: none !important; }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  #tabs.tabs { position: static; height: auto; flex-direction: row; overflow-x: auto; padding: 6px 10px; border-right: 0; border-bottom: 1px solid var(--line); }
  .nav-group { flex-direction: row; margin: 0; }
  .nav-h { display: none; }
  #tabs a { white-space: nowrap; }
  .topbar { position: static; }
  .user #userEmail, .hd-ic { display: none; }
}
@media (max-width: 700px) { .view { padding: 16px; } .topbar { padding: 10px 16px; } }

/* ---------- cards ---------- */
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 16px; box-shadow: 0 1px 3px rgba(40, 50, 120, .05); }
.section-card { border-top: 4px solid var(--accent); }
.card .label { color: var(--muted); font-size: .85rem; }
.card .big { font-family: var(--mono); font-size: 1.35rem; font-weight: 500; }
.check-card { display: grid; gap: 6px; align-content: start; border-left: 4px solid var(--line-strong); }
.check-card .title { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.check-card .accs { font-size: .8rem; color: var(--muted); margin-top: -4px; }
.check-card.ok { border-left-color: var(--ok); }
.check-card.open { border-left-color: var(--bad); }
.check-card.explained { border-left-color: var(--warn); }
.check-card.nodata { border-left-color: var(--line-strong); }
.check-card .row { display: flex; justify-content: space-between; gap: 8px; font-size: .9rem; }
.check-card .row span:last-child { font-family: var(--mono); }
.check-card textarea { min-height: 2.4em; resize: vertical; font-size: .85rem; }
.form-2col { display: grid; gap: 12px 18px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); max-width: 980px; }
.form-2col .full { grid-column: 1 / -1; }
.form-3col { display: grid; gap: 10px 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin: 10px 0; }

.pill { display: inline-block; white-space: nowrap; flex-shrink: 0; padding: 1px 9px; border-radius: 99px; font-size: .78rem; font-weight: 500; }
.pill.ok { background: var(--ok-soft); color: var(--ok); }
.pill.open { background: var(--bad-soft); color: var(--bad); }
.pill.explained { background: var(--warn-soft); color: var(--warn); }
.pill.nodata { background: var(--info-soft); color: var(--muted); }

.note { background: var(--sky-soft); border-radius: 10px; padding: 10px 14px; font-size: .9rem; margin: 10px 0; display: block; }
.note .ico { vertical-align: -4px; }
.note.warn { background: var(--warn-soft); }
.note.bad { background: var(--bad-soft); }

/* ---------- tables ---------- */
.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; }
table { border-collapse: collapse; width: 100%; font-size: .9rem; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--accent-soft); color: var(--accent-ink); font-weight: 600; position: sticky; top: 0; white-space: nowrap; }
#app[data-sec] th { color: color-mix(in srgb, var(--accent) 75%, #1f2540); }
td.num, th.num { text-align: right; font-family: var(--mono); white-space: nowrap; }
tr.total td { font-weight: 600; background: var(--sky-soft); border-top: 1px solid var(--line-strong); }
td.diff-bad { color: var(--bad); font-weight: 500; }
td.diff-ok { color: var(--ok); }
tbody tr:hover td { background: #f7f9fd; }
.table-scroll { max-height: 560px; overflow: auto; }
td input, td select { padding: 4px 6px; font-size: .85rem; width: 100%; }

/* ---------- search ---------- */
.search-box { position: relative; display: inline-flex; align-items: center; min-width: 300px; }
.search-box .ico { position: absolute; left: 10px; color: var(--muted); }
.search-box input { width: 100%; padding-left: 34px; border-radius: 10px; }

/* ---------- upload ---------- */
.drop { border: 2px dashed color-mix(in srgb, var(--accent) 45%, #fff); border-radius: 16px; padding: 32px; text-align: center; background: color-mix(in srgb, var(--accent-soft) 55%, #fff); cursor: pointer; color: var(--accent); }
.drop.over { border-color: var(--accent); background: var(--accent-soft); }
.file-card { display: grid; gap: 6px; }
.file-card .head { display: flex; justify-content: space-between; gap: 10px; align-items: baseline; }
.file-card .stats { font-family: var(--mono); font-size: .82rem; color: var(--muted); word-break: break-word; }
.file-card.error { border-color: var(--bad); }
.progress { height: 6px; background: var(--line); border-radius: 99px; overflow: hidden; }
.progress > div { height: 100%; background: var(--grad-strong); width: 0; transition: width .2s; }

.toast { position: fixed; right: 16px; bottom: 16px; background: #26307a; color: #fff; padding: 10px 16px; border-radius: 10px; max-width: min(440px, calc(100vw - 32px)); z-index: 20; }
.toast.bad { background: var(--bad); }

/* ---------- แท็บย่อย (ปุ่มสลับหัวข้อ) ---------- */
.subtabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.subtabs a { display: inline-flex; align-items: center; gap: 8px; padding: 9px 16px; border-radius: 12px; text-decoration: none; color: var(--ink); background: var(--surface); border: 1px solid var(--line); font-weight: 500; box-shadow: 0 1px 2px rgba(40, 50, 120, .05); }
.subtabs a .ico { color: var(--accent); }
.subtabs a:hover { border-color: var(--accent); }
.subtabs a.active { background: var(--grad-strong); color: #fff; border-color: transparent; box-shadow: 0 3px 10px color-mix(in srgb, var(--accent) 30%, transparent); }
.subtabs a.active .ico { color: #fff; }
.subtabs a .ico[viewBox] rect[fill="currentColor"] { fill: var(--excel); }
.subtabs a.active .ico rect[fill="currentColor"] { fill: #fff; }
.subtabs a.active .ico path[stroke="#fff"] { stroke: var(--excel); }

/* ---------- แถบขั้นตอน ---------- */
.steps { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; padding: 0; margin: 4px 0 16px; }
.steps li { display: flex; align-items: center; gap: 8px; padding: 6px 12px 6px 6px; background: var(--surface); border: 1px solid var(--line); border-radius: 99px; font-size: .88rem; color: var(--muted); }
.steps li b { display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-size: .8rem; flex-shrink: 0; }
.steps li.now { border-color: var(--accent); color: var(--ink); background: var(--accent-soft); font-weight: 600; }
.steps li.now b { background: var(--accent); color: #fff; }
.steps li:not(:last-child)::after { content: '→'; margin-left: 4px; color: var(--line-strong); }

/* ---------- ฟอร์มภาษีซื้อ ---------- */
.pv-form { display: grid; gap: 12px; margin-bottom: 14px; }
.pv-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; align-items: baseline; }
.pv-head strong { font-size: 1.05rem; }
.pv-grid { display: grid; gap: 12px 14px; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.pv-grid .span2 { grid-column: span 2; }
@media (max-width: 520px) { .pv-grid .span2 { grid-column: span 1; } .search-box { min-width: 0; width: 100%; } }
.pv-grid label { min-width: 0; }
.pv-grid input { width: 100%; min-width: 0; }
.pv-grid .lbl { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; color: var(--ink); font-weight: 600; }
.pv-grid .lbl small { color: var(--muted); font-weight: 400; }
.pv-grid .lbl i { color: var(--bad); font-style: normal; }
.fno { display: inline-grid; place-items: center; min-width: 24px; height: 24px; padding: 0 4px; border-radius: 99px; background: var(--accent); color: #fff; font-size: .78rem; }
.inp { position: relative; display: flex; align-items: center; }
.inp > .ico { position: absolute; left: 10px; color: color-mix(in srgb, var(--accent) 80%, #555); pointer-events: none; z-index: 1; }
.inp > input { padding-left: 38px; height: 42px; }
.pv-grid label.req input { border: 2px solid color-mix(in srgb, var(--accent) 45%, #fff); background: color-mix(in srgb, var(--accent-soft) 60%, #fff); }
.pv-grid label.req input:not(:placeholder-shown), .pv-grid label.req input[type=date]:valid { border-color: var(--ok); background: #fff; }
.pv-grid label.helper input { border: 2px dashed color-mix(in srgb, var(--accent) 40%, #fff); background: #f7faff; }
.pv-grid label.auto input { border-style: dashed; color: var(--muted); background: #f2f4f9; }
.pv-grid input:focus { border-color: var(--accent) !important; box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent); background: #fff; }
.pv-grid input.invalid, .pv-grid label.req input.invalid, input.invalid { border-color: var(--bad) !important; background: var(--bad-soft) !important; box-shadow: 0 0 0 3px rgba(194, 51, 77, .18); }
textarea.need:placeholder-shown { border: 2px solid color-mix(in srgb, var(--accent) 45%, #fff); background: color-mix(in srgb, var(--accent-soft) 60%, #fff); }
.nowrap { white-space: nowrap; }

/* ---------- ผู้ใช้และสิทธิ์ ---------- */
.pill-btn { border-radius: 99px; padding: 6px 14px; }
.pill-btn.on { background: var(--accent); color: #fff; border-color: var(--accent); }
.users-table td { vertical-align: middle; }
.users-table tr.off td { opacity: .6; }
.users-table .chips { display: flex; min-width: 220px; flex-wrap: wrap; gap: 6px; }
.users-table .actions { white-space: nowrap; text-align: right; }
.users-table .actions .btn { margin-left: 4px; }
.chip { display: inline-flex; align-items: center; gap: 5px; padding: 2px 10px 2px 8px; border-radius: 99px; font-size: .8rem; border: 1px solid; white-space: nowrap; }
.chip .ico { width: 14px; height: 14px; }
.chip.admin { background: var(--ok); color: #fff; border-color: var(--ok); }
.chip.g-overview { background: var(--g-overview-soft); color: var(--g-overview); border-color: color-mix(in srgb, var(--g-overview) 30%, #fff); }
.chip.g-recon { background: var(--g-recon-soft); color: var(--g-recon); border-color: color-mix(in srgb, var(--g-recon) 30%, #fff); }
.chip.g-pv { background: var(--g-pv-soft); color: var(--g-pv); border-color: color-mix(in srgb, var(--g-pv) 30%, #fff); }
.chip.g-sys { background: var(--g-sys-soft); color: var(--g-sys); border-color: color-mix(in srgb, var(--g-sys) 30%, #fff); }
.act-edit { background: #fff6dc; border-color: #f1d48a; color: #8a5a00; }
.act-pause { background: #f1f3f8; }
.act-del { background: #fdecef; border-color: #f2b8c4; color: var(--bad); }
.editor-card { border-top: 4px solid var(--accent); margin-bottom: 14px; }
.role-pick { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 10px; margin: 6px 0 10px; }
.role-opt { display: flex; gap: 10px; align-items: flex-start; padding: 10px 12px; border: 1px solid var(--line); border-radius: 12px; cursor: pointer; color: var(--ink); }
.role-opt:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.role-opt span { display: grid; }
.role-opt small { color: var(--muted); }
#ePermBox.disabled { opacity: .35; pointer-events: none; }
.perm-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(420px, 1fr)); gap: 12px; }
@media (max-width: 520px) { .perm-grid { grid-template-columns: 1fr; } }
.perm-group { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; --c: var(--g-overview); --cs: var(--g-overview-soft); }
.perm-group.g-recon { --c: var(--g-recon); --cs: var(--g-recon-soft); }
.perm-group.g-pv { --c: var(--g-pv); --cs: var(--g-pv-soft); }
.perm-group.g-sys { --c: var(--g-sys); --cs: var(--g-sys-soft); }
.perm-gh { background: var(--cs); color: var(--c); font-weight: 700; padding: 8px 12px; border-bottom: 1px solid var(--line); }
.perm-row { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 8px 12px; border-bottom: 1px solid var(--line); }
.perm-row:last-child { border-bottom: 0; }
.perm-name { display: flex; align-items: center; gap: 8px; min-width: 0; }
.perm-name .ico { color: var(--c); width: 20px; height: 20px; }
.perm-name span { display: grid; }
.perm-name small { color: var(--muted); font-size: .76rem; }
.seg { display: inline-flex; border: 1px solid var(--line-strong); border-radius: 10px; overflow: hidden; flex: none; }
.seg button { font: inherit; font-size: .8rem; border: 0; background: #fff; padding: 5px 10px; cursor: pointer; color: var(--muted); border-right: 1px solid var(--line); }
.seg button:last-child { border-right: 0; }
.seg button.on.lv0 { background: #eef0f5; color: var(--ink); font-weight: 600; }
.seg button.on.lv1 { background: var(--sky-soft); color: #2563eb; font-weight: 600; }
.seg button.on.lv2 { background: var(--ok); color: #fff; font-weight: 600; }