:root {
  --bg: #FBF6F4;
  --surface: #FFFFFF;
  --ink: #2A1E22;
  --muted: #5A464C;
  --soft: #6E5A60;
  --line: #EEDFE2;
  --line-strong: #D9C4CA;
  --accent: #A3344F;
  --accent-dark: #7E2239;
  --tint: #F6E3E7;
  --radius: 16px;
  --font: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --serif: 'Playfair Display', Georgia, serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
section[id], #confirm { scroll-margin-top: 84px; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.5; }
a { color: var(--accent); }
a:hover { color: var(--accent-dark); }
img { max-width: 100%; }
input, select, textarea, button { font: inherit; color: inherit; }
h1, h2 { font-family: var(--serif); margin: 0; line-height: 1.15; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 0 24px;
  border-radius: 999px; border: 1px solid transparent; font-weight: 600; text-decoration: none; cursor: pointer; transition: background .15s; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); color: #fff; }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #000; color: #fff; }
.btn-ghost { background: var(--surface); color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { background: var(--tint); color: var(--ink); }
.btn:disabled { opacity: .6; cursor: progress; }
.btn-sm { min-height: 38px; padding: 0 14px; font-size: 14px; border-radius: 10px; }

/* Form fields */
.field { display: flex; flex-direction: column; gap: 6px; font-size: 14px; font-weight: 600; }
.field input, .field select, .field textarea { height: 48px; border: 1px solid var(--line-strong); border-radius: 12px; padding: 0 14px;
  font-size: 16px; font-weight: 400; background: #fff; }
.field textarea { height: auto; padding: 12px 14px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.check { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--muted); }
.check input { width: 20px; height: 20px; accent-color: var(--accent); }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }

/* Badges */
.badge { display: inline-block; font-size: 13px; font-weight: 600; padding: 4px 10px; border-radius: 999px; white-space: nowrap; }
.st-pending { background: #FFF1D6; color: #7A5300; }
.st-paid { background: #F3E3F7; color: #6A2C7E; }
.st-working { background: #E6EEFB; color: #1F4C8F; }
.st-need_info { background: #FDE7E2; color: #8A2E1C; }
.st-done { background: #E3F1E6; color: #24603D; }
.st-cancelled { background: #EEEAEA; color: #4D4446; }

.alert { border-radius: 12px; padding: 12px 16px; font-size: 14px; line-height: 1.55; }
.alert-warn { background: #FFF6E5; border: 1px solid #F0D9A8; color: #5C4515; }
.alert-error { background: #FDECEA; border: 1px solid #F3B8AE; color: #8A2E1C; }
.alert-ok { background: #E3F1E6; border: 1px solid #B9DCC2; color: #24603D; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: 20px; }

.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--ink); color: #fff; padding: 12px 20px;
  border-radius: 12px; font-size: 15px; z-index: 50; box-shadow: 0 8px 24px rgba(0,0,0,.18); max-width: calc(100% - 32px); }

/* ---------- Landing ---------- */
.site-header { background: #fff; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.site-header .container { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; padding-top: 14px; padding-bottom: 14px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); }
.brand-mark { width: 40px; height: 40px; border-radius: 12px; background: var(--accent); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; flex: none; }
.brand-name { font-weight: 700; font-size: 16px; display: block; }
.brand-sub { font-size: 13px; color: var(--soft); display: block; }
.nav { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; font-size: 15px; }
.nav a:not(.btn) { color: var(--ink); text-decoration: none; }

.hero { padding: 64px 0 48px; }
.hero .container { display: flex; flex-wrap: wrap; gap: 48px; align-items: center; }
.hero-text { flex: 1 1 460px; min-width: 0; display: flex; flex-direction: column; gap: 20px; }
.hero h1 { font-size: clamp(34px, 5vw, 52px); }
.hero p { margin: 0; font-size: 18px; color: var(--muted); }
.pill { align-self: flex-start; background: var(--tint); color: var(--accent-dark); font-size: 14px; font-weight: 600; padding: 8px 14px; border-radius: 999px; }
.row { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 8px 24px; font-size: 14px; color: var(--muted); }
.compare { flex: 1 1 420px; min-width: 0; display: flex; gap: 14px; align-items: center; }
.compare-item { flex: 1 1 0; min-width: 0; display: flex; flex-direction: column; gap: 10px; text-align: center; font-size: 14px; font-weight: 600; }
.mock { aspect-ratio: 2 / 3; border-radius: 16px; }
.mock-before { background: linear-gradient(160deg, #F2DDE2, #E9D3C8); border: 1px solid #E3CFD4; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.mock-before span { background: rgba(255,255,255,.7); border-radius: 8px; padding: 6px 10px; font-size: 13px; color: var(--muted); }
.mock-after { background: #fff; border: 1px solid #E3CFD4; display: flex; flex-direction: column; gap: 8px; padding: 14px; }
.mock-after .bar { height: 14px; border-radius: 4px; background: var(--tint); }
.mock-after .slot { flex: 1 1 auto; border-radius: 8px; background: #EEE7E9; display: flex; align-items: center; justify-content: center; font-size: 12px; color: var(--soft); font-weight: 400; }
.mock-after .names { font-family: var(--serif); color: var(--accent); font-size: 15px; }
.layer-tag { position: absolute; font-size: 11px; background: #fff; border: 1px solid var(--line-strong); border-radius: 6px; padding: 2px 6px; }

.steps { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.steps .container { padding-top: 40px; padding-bottom: 40px; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; }
.step b { display: block; font-size: 13px; letter-spacing: .5px; color: var(--accent); }
.step strong { display: block; font-size: 18px; margin: 4px 0; }
.step span { color: var(--muted); font-size: 15px; }

.section { padding: 56px 0; }
.section-head { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.section h2 { font-size: 34px; }
.price-box { display: flex; align-items: baseline; gap: 8px; background: #fff; border: 1px solid #E3CFD4; border-radius: 20px; padding: 18px 30px; }
.price-box strong { font-size: 42px; color: var(--accent); }

.order-form { padding: 36px; display: flex; flex-wrap: wrap; gap: 36px; }
.order-main { flex: 999 1 540px; min-width: 0; display: flex; flex-direction: column; gap: 20px; }
.order-side { flex: 1 1 300px; min-width: 0; align-self: flex-start; position: sticky; top: 92px; background: var(--bg); border: 1px solid var(--line);
  border-radius: 20px; padding: 26px; display: flex; flex-direction: column; gap: 14px; }
.sum-row { display: flex; justify-content: space-between; font-size: 15px; }
.sum-total { display: flex; justify-content: space-between; align-items: baseline; border-top: 1px solid #E3CFD4; padding-top: 14px; }
.sum-total strong { font-size: 30px; color: var(--accent); }

.dropzone { position: relative; border: 2px dashed var(--line-strong); border-radius: 16px; background: #FCF8F7; padding: 30px; display: flex; flex-direction: column;
  align-items: center; gap: 6px; text-align: center; cursor: pointer; }
.dropzone.drag { border-color: var(--accent); background: var(--tint); }
.dropzone input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.dropzone:focus-within { outline: 2px solid var(--accent); outline-offset: 2px; }
.file-list { display: flex; flex-direction: column; gap: 10px; }
.file-item { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; border: 1px solid var(--line); border-radius: 14px; padding: 10px 14px; background: #fff; }
.file-item img { width: 56px; height: 56px; object-fit: contain; border-radius: 8px; background: #F4ECEA; flex: none; }
.file-meta { flex: 1 1 180px; min-width: 0; display: flex; flex-direction: column; }
.file-meta strong { font-size: 15px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-meta span { font-size: 13px; color: var(--soft); }
.file-item select { height: 44px; border: 1px solid var(--line-strong); border-radius: 10px; padding: 0 10px; background: #fff; }
.icon-btn { width: 44px; height: 44px; border: 0; border-radius: 10px; background: var(--tint); color: var(--accent-dark); cursor: pointer; display: inline-flex; align-items: center; justify-content: center; flex: none; }
.icon-btn:hover { background: #EDCBD3; }

.confirm { padding: 36px; display: flex; flex-direction: column; gap: 24px; }
.confirm-head { text-align: center; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.ok-icon { width: 64px; height: 64px; border-radius: 999px; background: #E3F1E6; display: flex; align-items: center; justify-content: center; }
.pay { display: flex; flex-wrap: wrap; gap: 32px; }
.qr { flex: 1 1 260px; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.qr img { width: 280px; height: auto; border-radius: 12px; border: 1px solid #E3CFD4; background: #fff; }
.pay-info { flex: 999 1 340px; min-width: 0; display: flex; flex-direction: column; gap: 10px; }
.kv { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; font-size: 16px; padding: 4px 0; }
.kv > span:first-child { color: var(--muted); }
.kv strong { text-align: right; }
.code-box { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; background: var(--tint); border-radius: 14px; padding: 14px 18px; }
.code-box strong { font-size: 24px; letter-spacing: 1px; }
.copy { margin-left: 8px; border: 1px solid var(--line-strong); background: #fff; border-radius: 8px; padding: 6px 10px; font-size: 13px; cursor: pointer; min-height: 32px; }

.lookup { background: var(--tint); }
.lookup-form { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; }
.lookup-form .field { flex: 1 1 240px; }
.results { display: flex; flex-direction: column; gap: 14px; margin-top: 24px; }
.result { padding: 20px 22px; display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.result-main { flex: 999 1 320px; min-width: 0; display: flex; flex-direction: column; gap: 6px; }
.result-title { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.result-title strong { font-size: 18px; }
.result .pay { width: 100%; border-top: 1px solid var(--line); padding-top: 16px; }

.faq { display: flex; flex-direction: column; gap: 12px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 18px 22px; }
.faq summary { font-weight: 600; cursor: pointer; }
.faq p { margin: 8px 0 0; color: var(--muted); }

.site-footer { background: var(--ink); color: #F3E9EB; }
.site-footer .container { padding-top: 28px; padding-bottom: 28px; display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; font-size: 14px; }
.site-footer a { color: #F6C9D3; }

@media (max-width: 640px) {
  .order-form, .confirm { padding: 22px; }
  .order-side { position: static; }
  .nav { gap: 12px; }
  .nav .hide-sm { display: none; }
  .compare { gap: 8px; }
}

/* ---- Thanh toán thành công ---- */
.wait-pay { display: flex; align-items: center; justify-content: center; gap: 8px; }
.dot-pulse { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); animation: pulse 1.4s ease-in-out infinite; flex: none; }
@keyframes pulse { 0%, 100% { opacity: .25; transform: scale(.8); } 50% { opacity: 1; transform: scale(1); } }
.paid-box { display: flex; flex-direction: column; align-items: center; gap: 10px; text-align: center; padding: 24px 16px; border-radius: var(--radius); background: #E8F5EC; color: #1F5E3A; }
.paid-box strong { font-size: 24px; }
.modal { position: fixed; inset: 0; z-index: 1000; background: rgba(20, 12, 16, .55); display: flex; align-items: center; justify-content: center; padding: 16px; }
.modal-card { position: relative; width: 100%; max-width: 440px; background: #fff; color: #2A1F24; border-radius: 20px; padding: 32px 24px 24px; display: flex; flex-direction: column; align-items: center; gap: 14px; text-align: center; box-shadow: 0 20px 60px rgba(0,0,0,.25); }
.modal-card h2 { margin: 0; font-size: 30px; }
.modal-card .ok-icon { width: 64px; height: 64px; border-radius: 50%; background: #E8F5EC; display: flex; align-items: center; justify-content: center; }
.modal-x { position: absolute; top: 10px; right: 12px; width: 40px; height: 40px; border: 0; background: transparent; font-size: 28px; line-height: 1; cursor: pointer; color: #7A6A70; border-radius: 10px; }
.modal-x:hover { background: #F4ECEF; }
.contact-list { display: flex; flex-direction: column; gap: 10px; width: 100%; }
.contact-btn { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 16px; border-radius: 14px; border: 1px solid #E6D8DD; text-decoration: none; color: inherit; font-weight: 600; }
.contact-btn:hover { border-color: var(--accent); background: #FBF5F7; color: inherit; }
.contact-btn span { color: #7A6A70; font-weight: 500; font-size: 14px; }
.modal-card .btn { width: 100%; }
.claim-btn { width: 100%; margin-top: 6px; }