/* Layout: a single calm column; the hero pairs the headline with the wheel (uneven → round); the 4-step path reads as a vertical sequence */
:root {
  --bg: #FFF7FA;        /* light, fresh blush */
  --surface: #FFFFFF;
  --ink: #33202F;       /* plum black */
  --muted: #7A6273;
  --rose: #A8318A;      /* tím Huế magenta, matches the áo dài */
  --glow: #D9952A;      /* bright warm gold */
  --line: #F1DCE6;
  --rose-soft: #FCE4F0;
  --on-rose: #FFFFFF;
  --f-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --f-body: "Be Vietnam Pro", "Segoe UI", system-ui, sans-serif;
  --step--1: .86rem; --step-0: 1rem; --step-1: 1.2rem; --step-2: 1.6rem; --step-3: 2.3rem; --step-4: clamp(2.3rem, 6vw, 3.6rem);
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1E1520; --surface: #2A1D2B; --ink: #F7EAF2; --muted: #C2A8B9;
    --rose: #E58AC8; --glow: #F0BC62; --line: #3F2C3F; --rose-soft: #43253D; --on-rose: #1E1520;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #1E1520; --surface: #2A1D2B; --ink: #F7EAF2; --muted: #C2A8B9;
  --rose: #E58AC8; --glow: #F0BC62; --line: #3F2C3F; --rose-soft: #43253D; --on-rose: #1E1520;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body { margin: 0; }
img { max-width: 100%; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { background: var(--bg); color: var(--ink); font-family: var(--f-body); font-size: var(--step-0); line-height: 1.65; font-weight: 400; }
.wrap { max-width: 1080px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
h1, h2, h3 { font-family: var(--f-display); font-weight: 400; line-height: 1.15; text-wrap: balance; margin: 0; }
p { margin: 0; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--rose); outline-offset: 3px; border-radius: 6px; }
.eyebrow { font-size: var(--step--1); letter-spacing: .14em; text-transform: uppercase; color: var(--rose); font-weight: 500; }
.btn { display: inline-flex; align-items: center; gap: .5em; padding: .8em 1.4em; border-radius: 999px; border: 1px solid var(--rose); background: var(--rose); color: var(--on-rose); font: 500 var(--step-0)/1 var(--f-body); text-decoration: none; cursor: pointer; transition: transform .15s ease, background .15s ease; }
.btn:hover { transform: translateY(-1px); }
.btn.ghost { background: transparent; color: var(--rose); }

.btn[disabled] { opacity: .6; cursor: wait; transform: none; }

/* header */
header.site { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: .8rem; }
.logo { font-family: var(--f-display); font-size: 1.25rem; text-decoration: none; white-space: nowrap; }
.logo i { color: var(--rose); font-style: italic; }
nav.links { display: flex; gap: 1.4rem; font-size: var(--step--1); }
nav.links a { text-decoration: none; color: var(--muted); }
nav.links a:hover { color: var(--ink); }
header .btn { padding: .6em 1.1em; font-size: var(--step--1); }
@media (max-width: 760px) { nav.links { display: none; } }

/* hero */
.hero .wrap { display: grid; grid-template-columns: 1.15fr .85fr; gap: 2.5rem; align-items: center; padding-block: 4.5rem 3.5rem; }
.hero h1 { font-size: var(--step-4); font-weight: 300; }
.hero h1 em { color: var(--rose); font-style: italic; }
.hero .lead { margin-top: 1.2rem; font-size: var(--step-1); color: var(--muted); max-width: 34ch; line-height: 1.55; }
.hero .ctas { margin-top: 2rem; display: flex; flex-wrap: wrap; gap: .8rem; }
.wheel-box { display: grid; justify-items: center; gap: .6rem; }
.wheel-box svg { width: 100%; max-width: 360px; height: auto; cursor: pointer; }
.wheel-cap { font-size: var(--step--1); color: var(--muted); font-style: italic; font-family: var(--f-display); }
@media (max-width: 760px) { .hero .wrap { grid-template-columns: 1fr; padding-block: 2.5rem; } .wheel-box { order: -1; } .wheel-box svg { max-width: 240px; } }

section { padding-block: 4rem; }
.sec-head { display: grid; gap: .6rem; margin-bottom: 2.4rem; max-width: 60ch; }
.sec-head h2 { font-size: var(--step-3); }
.sec-head p { color: var(--muted); }

/* about */
.about .wrap { display: grid; grid-template-columns: 300px 1fr; gap: 3rem; align-items: start; }
.about .photo { aspect-ratio: 4/5; max-width: 100%; width: 100%; height: auto; object-fit: cover; object-position: 50% 20%; border-radius: var(--radius); display: block; }
.about .text { display: grid; gap: 1rem; min-width: 0; max-width: 62ch; }
.about blockquote { margin: 0; font-family: var(--f-display); font-style: italic; font-size: var(--step-2); line-height: 1.3; color: var(--rose); font-weight: 300; }
.miles { list-style: none; margin: .4rem 0 0; padding: 0; display: grid; gap: 1.1rem; }
.miles li { display: grid; grid-template-columns: 7.5rem 1fr; gap: 1rem; align-items: baseline; padding-top: 1.1rem; border-top: 1px solid var(--line); }
.miles .yr { font-family: var(--f-display); font-size: var(--step-2); color: var(--rose); font-weight: 300; line-height: 1.1; white-space: nowrap; }
@media (max-width: 560px) { .miles li { grid-template-columns: 1fr; gap: .2rem; } }
@media (max-width: 760px) { .about .wrap { grid-template-columns: 1fr; } .about .photo { max-width: 260px; } }

/* path */
.path { background: var(--surface); border-block: 1px solid var(--line); }
.steps { display: grid; gap: 1.2rem; }
.step { display: grid; grid-template-columns: 64px 1fr auto; gap: 1.6rem; align-items: start; padding: 1.8rem; border-radius: var(--radius); border: 1px solid var(--line); background: var(--bg); position: relative; }
.step.feature { border-color: var(--rose); box-shadow: 0 10px 30px -18px var(--rose); }
.step .num { font-family: var(--f-display); font-size: 2.6rem; font-weight: 300; color: var(--rose); line-height: 1; }
.step .body { min-width: 0; display: grid; gap: .5rem; }
.step h3 { font-size: var(--step-2); }
.step .sub { color: var(--rose); font-family: var(--f-display); font-style: italic; font-size: var(--step-1); line-height: 1.35; }
.step ul { margin: .4rem 0 0; padding-left: 1.1rem; color: var(--muted); display: grid; gap: .25rem; }
.step .gift { margin-top: .5rem; font-size: var(--step--1); color: var(--muted); line-height: 1.35; }
.step .gift b { color: var(--glow); font-weight: 600; font-variant-numeric: tabular-nums; white-space: nowrap; }
.step .val { color: var(--rose); white-space: nowrap; font-variant-numeric: tabular-nums; }
.step .meta { display: grid; justify-items: end; gap: .6rem; text-align: right; }
.price { font-family: var(--f-display); font-size: var(--step-2); font-variant-numeric: tabular-nums; white-space: nowrap; }
.price small { font-family: var(--f-body); font-size: .8rem; color: var(--muted); margin-left: .15rem; }
.dur { font-size: var(--step--1); color: var(--muted); white-space: nowrap; }
.badge { position: absolute; top: -.75rem; left: 1.8rem; background: var(--rose); color: var(--on-rose); font-size: .74rem; letter-spacing: .08em; text-transform: uppercase; padding: .3rem .8rem; border-radius: 999px; font-weight: 500; }
.step .btn { padding: .65em 1.2em; font-size: var(--step--1); }
@media (max-width: 760px) {
  .step { grid-template-columns: 1fr; gap: 1rem; padding: 1.6rem 1.2rem 1.3rem; }
  .step .num { font-size: 2rem; }
  .step .meta { justify-items: start; text-align: left; grid-auto-flow: column; align-items: center; justify-content: space-between; grid-template-columns: auto auto; }
  .step .meta .btn { grid-column: 1 / -1; justify-self: stretch; justify-content: center; }
}

/* testimonials */
.voices { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); gap: 1.2rem; align-items: start; }
.voice { margin: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; display: grid; gap: .9rem; min-width: 0; }
.voice blockquote { margin: 0; font-family: var(--f-display); font-size: var(--step-1); line-height: 1.5; font-weight: 300; overflow-wrap: anywhere; white-space: pre-line; }
.voice blockquote::before { content: "“"; color: var(--rose); font-size: 2.4rem; line-height: 0; vertical-align: -.9rem; margin-right: .15rem; }
.voice figcaption { font-size: var(--step--1); color: var(--muted); }
.voice figcaption b { color: var(--ink); font-weight: 600; }
.voices-empty { color: var(--muted); font-style: italic; font-family: var(--f-display); font-size: var(--step-1); }
.share-cta { margin-top: 2rem; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.2rem 2rem; padding: 1.6rem 1.8rem; border-radius: var(--radius); background: var(--rose-soft); }
.share-cta > div { min-width: 0; flex: 1 1 22rem; display: grid; gap: .35rem; }
.share-cta h3 { font-size: var(--step-2); }
.share-cta p { color: var(--muted); max-width: 52ch; }

/* booking */
.book .wrap { max-width: 1040px; display: grid; grid-template-columns: 320px 1fr; gap: 3rem; align-items: start; }
.book .side { position: sticky; top: calc(env(safe-area-inset-top, 0px) + 5rem); display: grid; gap: 1rem; }
.book .side img { width: 100%; max-width: 100%; height: auto; aspect-ratio: 2/3; object-fit: cover; border-radius: var(--radius); display: block; }
.book .side p { font-family: var(--f-display); font-style: italic; color: var(--muted); font-size: var(--step-1); line-height: 1.4; }
.book .main { min-width: 0; }
@media (max-width: 860px) {
  .book .wrap { grid-template-columns: 1fr; gap: 1.5rem; }
  .book .side { position: static; grid-template-columns: 120px 1fr; align-items: center; }
  .book .side img { aspect-ratio: 1; object-position: 50% 25%; }
}
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 2rem; display: grid; gap: 1.6rem; }
@media (max-width: 760px) { .card { padding: 1.3rem; } }
.note { font-size: var(--step--1); color: var(--muted); }
.field { display: grid; gap: .4rem; min-width: 0; }
.field label, .lbl { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); font-weight: 500; }
input, select, textarea { font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: .75rem .9rem; width: 100%; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--rose); }
textarea { min-height: 90px; resize: vertical; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 560px) { .row2 { grid-template-columns: 1fr; } }
.weeknav { display: flex; align-items: center; justify-content: space-between; gap: .5rem; }
.weeknav button { background: none; border: 1px solid var(--line); border-radius: 999px; width: 2.2rem; height: 2.2rem; color: var(--ink); cursor: pointer; font-size: 1rem; }
.weeknav button:disabled { opacity: .35; cursor: default; }
.weeknav span { font-family: var(--f-display); font-size: var(--step-1); }
.chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip { border: 1px solid var(--line); background: var(--bg); color: var(--ink); border-radius: 12px; padding: .55rem .9rem; font: inherit; font-size: var(--step--1); cursor: pointer; font-variant-numeric: tabular-nums; }
.chip[aria-pressed="true"] { background: var(--rose); border-color: var(--rose); color: var(--on-rose); }
.chip:disabled { cursor: not-allowed; opacity: .45; text-decoration: line-through; }
.chip .d { display: block; font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; opacity: .75; }
.err { color: var(--rose); font-size: var(--step--1); }
.result { display: grid; grid-template-columns: 200px 1fr; gap: 1.5rem; align-items: start; }
.qrbox { display: grid; gap: .5rem; }
.qrbox p { font-size: .78rem; color: var(--muted); line-height: 1.4; }
.result .qr { aspect-ratio: 1; max-width: 100%; background: #FFFFFF; border-radius: 12px; padding: 8px; border: 1px solid var(--line); }
.result .qr svg { width: 100%; height: auto; display: block; }
.copy { background: none; border: 1px solid var(--line); color: var(--rose); border-radius: 999px; font: inherit; font-size: .72rem; padding: .1rem .55rem; margin-left: .4rem; cursor: pointer; }
.result dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: .4rem 1rem; font-size: var(--step--1); }
.result dt { color: var(--muted); }
.result dd { margin: 0; font-variant-numeric: tabular-nums; min-width: 0; overflow-wrap: anywhere; }
@media (max-width: 560px) { .result { grid-template-columns: 1fr; } .result .qr { max-width: 200px; } }

.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.check { display: flex; gap: .7rem; align-items: flex-start; font-size: var(--step--1); color: var(--ink); }
.check input { width: 1.15rem; height: 1.15rem; margin-top: .2rem; flex: none; accent-color: var(--rose); }
.thanks { text-align: center; display: grid; gap: .8rem; justify-items: center; }
.thanks h2 { font-size: var(--step-3); }

footer { border-top: 1px solid var(--line); padding-block: 2.5rem; color: var(--muted); font-size: var(--step--1); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 1rem 2rem; justify-content: space-between; }
footer a { color: var(--rose); }