/* ===== Bộ màu riêng của Ngọc Huệ: Xanh Tin cậy + Cam Đào ===== */
:root {
  --xanh: #1F5FAE;      /* màu chính: tin cậy, chuyên nghiệp */
  --xanh-dam: #123E73;  /* chữ tiêu đề */
  --xanh-nhat: #E8F0FA; /* nền khối nhấn */
  --dao: #F4A47C;       /* màu phụ: ấm áp, gần gũi */
  --dao-dam: #B9532A;   /* cam đậm cho chữ nhỏ */
  --dao-nhat: #FFF1E9;
  --chu: #1B2A3A;
  --phu: #5B6B7C;
  --nen: #FAFBFD;
  --trang: #FFFFFF;
  --vien: #DCE4EE;
  --font: 'Be Vietnam Pro', 'Segoe UI', Arial, sans-serif;
  --r: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font: 16px/1.6 var(--font); color: var(--chu); background: var(--nen); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--xanh); }
h1, h2, h3 { color: var(--xanh-dam); line-height: 1.25; margin: 0 0 10px; }
h1 { font-size: clamp(32px, 6vw, 52px); font-weight: 800; letter-spacing: -.5px; }
h2 { font-size: clamp(24px, 4vw, 32px); font-weight: 800; }
h3 { font-size: 18px; font-weight: 700; }
p { margin: 0 0 10px; }
.muted { color: var(--phu); }

.top { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 16px; background: rgba(250,251,253,.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--vien); }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 800; color: var(--xanh-dam); text-decoration: none; }
nav { display: flex; align-items: center; gap: 16px; font-size: 15px; }
nav a { color: var(--chu); text-decoration: none; }
nav a:not(.btn) { display: none; }
@media (min-width: 720px) { nav a:not(.btn) { display: inline; } }

.btn { display: inline-block; border: 0; border-radius: 999px; padding: 12px 22px; background: var(--xanh); color: #fff; font: 600 16px var(--font);
  text-decoration: none; cursor: pointer; transition: background .15s, transform .15s; text-align: center; }
.btn:hover { background: var(--xanh-dam); }
.btn:disabled { background: #A9B7C8; cursor: not-allowed; }
.btn.ghost { background: transparent; color: var(--xanh); box-shadow: inset 0 0 0 2px var(--xanh); }
.btn.ghost:hover { background: var(--xanh-nhat); }
.btn.small { padding: 8px 16px; font-size: 14px; }

main { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
.hero { display: grid; gap: 28px; padding: 44px 0 36px; align-items: center; }
@media (min-width: 860px) { .hero { grid-template-columns: 1.4fr 1fr; padding: 72px 0 56px; } }
.eyebrow { display: inline-block; background: var(--dao-nhat); color: var(--dao-dam); font-weight: 700; font-size: 14px; padding: 4px 12px; border-radius: 999px; }
.lead { font-size: 18px; max-width: 600px; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0 10px; }
.note { font-size: 14px; color: var(--phu); }
.hero-card { background: linear-gradient(160deg, var(--xanh) 0%, var(--xanh-dam) 100%); color: #fff; border-radius: 24px; padding: 28px; position: relative; overflow: hidden; }
.hero-card::after { content: ""; position: absolute; right: -60px; bottom: -60px; width: 200px; height: 200px; border-radius: 50%; background: var(--dao); opacity: .9; }
.avatar { width: 84px; height: 84px; border-radius: 50%; background: var(--dao); color: var(--xanh-dam); display: grid; place-items: center; font-weight: 800; font-size: 30px; margin-bottom: 18px; }
.hero-card ul { list-style: none; margin: 0; padding: 0; position: relative; z-index: 1; }
.hero-card li { display: flex; gap: 10px; align-items: center; padding: 9px 0; border-top: 1px solid rgba(255,255,255,.18); font-weight: 600; }
.hero-card li span { width: 28px; text-align: center; }

.block { padding: 40px 0; border-top: 1px solid var(--vien); }
.sub { color: var(--phu); margin-bottom: 20px; }
.grid4 { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); margin-top: 18px; }
.card { background: var(--trang); border: 1px solid var(--vien); border-radius: var(--r); padding: 20px; }
.card .ico { font-size: 26px; display: block; margin-bottom: 8px; }
.card p { color: var(--phu); font-size: 15px; margin: 0; }

.projects { display: grid; gap: 18px; }
.project { display: grid; background: var(--trang); border: 1px solid var(--vien); border-radius: var(--r); overflow: hidden; }
@media (min-width: 820px) { .project { grid-template-columns: 1fr 1.2fr; } }
.shot { background: var(--xanh-nhat); min-height: 200px; display: flex; align-items: center; justify-content: center; }
.shot.img { background: #F6EFE4; }
.shot.img img { width: 100%; height: 100%; object-fit: cover; }
.shot.tg { flex-direction: column; gap: 10px; padding: 20px; background: #DCE8F5; align-items: stretch; }
.bubble { background: #fff; border-radius: 14px 14px 14px 4px; padding: 10px 14px; font-size: 14px; box-shadow: 0 1px 2px rgba(0,0,0,.08); max-width: 330px; }
.opts { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-top: 8px; }
.opts span { border: 1px solid var(--vien); border-radius: 8px; padding: 4px 8px; text-align: center; font-size: 13px; }
.opts .on { background: var(--xanh); color: #fff; border-color: var(--xanh); }
.pbody { padding: 20px; }
.pbody p { color: var(--phu); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 12px 0 0; }
.tags span { background: var(--dao-nhat); color: var(--dao-dam); font-size: 13px; font-weight: 600; padding: 3px 10px; border-radius: 999px; }

.prices { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
.price { background: var(--trang); border: 1px solid var(--vien); border-radius: var(--r); padding: 24px; display: flex; flex-direction: column; }
.price.hot { border: 2px solid var(--xanh); box-shadow: 0 10px 30px rgba(31,95,174,.12); }
.amount { font-size: 28px; font-weight: 800; color: var(--xanh-dam); }
.amount span { font-size: 15px; font-weight: 500; color: var(--phu); }
.price ul { padding-left: 20px; color: var(--phu); flex: 1; }
.price .btn { margin-top: 10px; }

.booking { padding-bottom: 60px; }
.bk, .pay, .done { background: var(--trang); border: 1px solid var(--vien); border-radius: 18px; padding: 20px; }
.step { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--xanh-dam); margin: 18px 0 10px; }
.step:first-child { margin-top: 0; }
.num { width: 26px; height: 26px; border-radius: 50%; background: var(--xanh); color: #fff; display: grid; place-items: center; font-size: 14px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { border: 1.5px solid var(--vien); background: var(--trang); color: var(--chu); border-radius: 12px; padding: 9px 14px; font: 500 15px var(--font); cursor: pointer; }
.chip small { display: block; color: var(--phu); font-size: 12px; }
.chip:hover { border-color: var(--xanh); }
.chip[aria-pressed="true"] { background: var(--xanh); border-color: var(--xanh); color: #fff; }
.chip[aria-pressed="true"] small { color: #DCE8F5; }
.form label { display: block; font-weight: 600; font-size: 15px; margin-bottom: 12px; }
.form input, .form textarea { display: block; width: 100%; margin-top: 6px; padding: 11px 12px; border: 1.5px solid var(--vien); border-radius: 10px; font: 16px var(--font); color: var(--chu); background: var(--nen); }
.form input:focus, .form textarea:focus { outline: none; border-color: var(--xanh); background: #fff; }
.trap { position: absolute; left: -9999px; }
.summary { background: var(--xanh-nhat); border-radius: 10px; padding: 10px 12px; font-size: 15px; }
.summary.ready { color: var(--xanh-dam); }
.err { color: var(--dao-dam); font-weight: 600; margin-top: 10px; }
.pay { text-align: center; }
.pay img { margin: 12px auto; border-radius: 12px; border: 1px solid var(--vien); width: min(320px, 100%); }
.pay dl { display: grid; grid-template-columns: auto; gap: 2px; max-width: 420px; margin: 10px auto; text-align: left; }
.pay dt { color: var(--phu); font-size: 14px; margin-top: 8px; }
.pay dd { margin: 0; font-weight: 700; font-size: 17px; word-break: break-all; }
.hold { background: var(--dao-nhat); border-radius: 10px; padding: 10px; color: var(--dao-dam); }
.done { background: var(--xanh-nhat); border-color: transparent; }
.done.gone { background: var(--dao-nhat); }

footer { text-align: center; padding: 28px 16px 40px; border-top: 1px solid var(--vien); font-size: 14px; }
footer p { margin: 4px 0; }