/* =========================================================
   An Nam Retreat — style.css
   Phong cách: kể chuyện bằng ảnh (editorial / immersive). Ảnh toàn màn,
   chữ serif mảnh, tông xanh biển đậm + cát, rất ít khối viền.
   Bố cục khác các mẫu trước:
     - Header TRONG SUỐT, chỉ có logo + 2 nút, menu ẩn sau nút "Menu" (overlay toàn màn)
     - Hero ẢNH TOÀN MÀN 100vh, chữ ở góc dưới, thanh đặt phòng nổi đè mép dưới
     - Các section ảnh TRÀN MÀN xen kẽ (full-bleed) với chữ đặt lệch
     - Phòng nghỉ dạng MASONRY cao thấp so le
     - Trải nghiệm dạng băng ảnh ngang tự chạy
     - Đặt phòng: bảng giá theo ngày + form 2 bước
   Ảnh: mỗi khối ảnh dùng biến --img trên thẻ HTML (đường dẫn ../images/…).
   ========================================================= */

:root{
  --sea:#0E3B4E;
  --sea-deep:#082A38;
  --sea-soft:#E3EEF2;
  --sand:#E9DCC5;
  --sand-deep:#C9B48F;
  --cream:#FAF6EE;
  --text:#1F2A30;
  --muted:#6B7A82;
  --line:#E2DED4;
  --white:#fff;
  --radius:2px;
  --shadow:0 2px 6px rgba(14,59,78,.06), 0 16px 40px rgba(14,59,78,.10);
  --shadow-lg:0 30px 70px rgba(14,59,78,.25);
  --ph:linear-gradient(135deg,#DCE9EE 0%,#C2D8E0 55%,#A9C7D2 100%);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Be Vietnam Pro',system-ui,-apple-system,sans-serif;font-weight:300;color:var(--text);background:var(--cream);font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
img{max-width:100%;display:block}
svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex:none}
b,strong{font-weight:500}
.ph{background:var(--img,var(--ph)) center/cover no-repeat,var(--ph)}
.container{width:min(1280px,100% - 48px);margin-inline:auto}
.serif{font-family:'Cormorant Garamond',Georgia,serif}
h1,h2,h3,.h{font-family:'Cormorant Garamond',Georgia,serif;font-weight:400;line-height:1.1;letter-spacing:-.3px}

/* ---------- Nút ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 28px;border-radius:var(--radius);font-weight:500;font-size:12px;letter-spacing:2.5px;text-transform:uppercase;transition:.2s;white-space:nowrap}
.btn svg{width:15px;height:15px}
.btn--sea{background:var(--sea);color:#fff}
.btn--sea:hover{background:var(--sea-deep)}
.btn--sand{background:var(--sand);color:var(--sea-deep)}
.btn--sand:hover{background:var(--sand-deep)}
.btn--white{background:#fff;color:var(--sea)}
.btn--white:hover{background:var(--sand)}
.btn--ghost{border:1px solid rgba(255,255,255,.7);color:#fff}
.btn--ghost:hover{background:#fff;color:var(--sea)}
.btn--line{border:1px solid var(--sea);color:var(--sea)}
.btn--line:hover{background:var(--sea);color:#fff}
.btn--text{padding:0;border-bottom:1px solid currentColor;border-radius:0;gap:8px}

/* ---------- Header trong suốt + overlay menu ---------- */
.header{position:fixed;top:0;left:0;right:0;z-index:60;color:#fff;transition:.3s;mix-blend-mode:normal}
.header__in{display:flex;align-items:center;justify-content:space-between;min-height:88px}
.header.is-solid{background:rgba(250,246,238,.94);backdrop-filter:blur(10px);color:var(--sea);box-shadow:0 1px 0 var(--line)}
.header.is-solid .header__in{min-height:72px}
.logo{display:flex;flex-direction:column;line-height:1}
.logo b{font-family:'Cormorant Garamond',serif;font-weight:500;font-size:26px;letter-spacing:4px;text-transform:uppercase}
.logo small{font-size:9px;letter-spacing:4px;text-transform:uppercase;opacity:.75;margin-top:5px}
.header__right{display:flex;align-items:center;gap:10px}
.header__right .btn--ghost{border-color:currentColor}
.menu-btn{display:inline-flex;align-items:center;gap:12px;padding:12px 18px;border:1px solid currentColor;border-radius:var(--radius);font-size:12px;letter-spacing:2.5px;text-transform:uppercase;font-weight:500}
.menu-btn i{width:18px;height:1px;background:currentColor;position:relative;display:block}
.menu-btn i::before,.menu-btn i::after{content:"";position:absolute;left:0;right:0;height:1px;background:currentColor}
.menu-btn i::before{top:-5px}.menu-btn i::after{top:5px}

.overlay{position:fixed;inset:0;z-index:70;background:var(--sea-deep);color:#fff;display:grid;grid-template-columns:1.2fr .8fr;opacity:0;visibility:hidden;transition:.35s}
.overlay.is-open{opacity:1;visibility:visible}
.overlay__nav{padding:120px 8vw 60px;display:flex;flex-direction:column;justify-content:center;gap:6px}
.overlay__nav a{font-family:'Cormorant Garamond',serif;font-size:clamp(34px,5vw,60px);line-height:1.15;display:flex;align-items:baseline;gap:18px;opacity:.85;transition:.2s}
.overlay__nav a small{font-family:'Be Vietnam Pro',sans-serif;font-size:11px;letter-spacing:3px;opacity:.5}
.overlay__nav a:hover,.overlay__nav a.is-active{opacity:1;padding-left:14px;color:var(--sand)}
.overlay__side{padding:120px 8vw 60px 40px;border-left:1px solid rgba(255,255,255,.12);display:flex;flex-direction:column;justify-content:flex-end;gap:26px;font-size:14px;opacity:.85}
.overlay__side b{display:block;font-size:11px;letter-spacing:3px;text-transform:uppercase;opacity:.5;margin-bottom:6px;font-weight:500}
.overlay__close{position:absolute;top:28px;right:max(24px,calc((100% - 1280px)/2));width:48px;height:48px;border:1px solid rgba(255,255,255,.4);border-radius:50%;display:grid;place-items:center}
.overlay .ph{position:absolute;right:0;top:0;bottom:0;width:40%;opacity:.25;pointer-events:none}

/* ---------- Hero toàn màn ---------- */
.hero{position:relative;height:min(100vh,860px);min-height:620px;color:#fff;display:flex;align-items:flex-end}
.hero .ph{position:absolute;inset:0}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,42,56,.35),transparent 35%,rgba(8,42,56,.75))}
.hero__in{position:relative;z-index:1;width:100%;padding-bottom:150px}
.hero__eyebrow{font-size:11px;letter-spacing:4px;text-transform:uppercase;opacity:.85;display:flex;align-items:center;gap:14px}
.hero__eyebrow::before{content:"";width:40px;height:1px;background:currentColor}
.hero h1{font-size:clamp(48px,7.5vw,108px);margin:18px 0 12px;max-width:900px}
.hero h1 em{font-style:italic;color:var(--sand)}
.hero p{font-size:17px;max-width:520px;opacity:.9}
.hero__scroll{position:absolute;right:max(24px,calc((100% - 1280px)/2));bottom:170px;writing-mode:vertical-rl;font-size:10px;letter-spacing:4px;text-transform:uppercase;opacity:.7;display:flex;align-items:center;gap:12px}
.hero__scroll::after{content:"";width:1px;height:50px;background:currentColor;animation:drop 2s ease-in-out infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* Thanh đặt phòng nổi đè mép hero */
.bookbar{position:relative;z-index:2;margin-top:-80px}
.bookbar__in{background:#fff;box-shadow:var(--shadow-lg);display:grid;grid-template-columns:1fr 1fr 1fr 1fr auto}
.bookbar__in > div{padding:22px 26px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:6px}
.bookbar label{font-size:10px;letter-spacing:2.5px;text-transform:uppercase;color:var(--muted);font-weight:500}
.bookbar input,.bookbar select{border:0;font:inherit;font-weight:400;font-size:15px;color:var(--text);background:transparent;outline:none;padding:0;font-family:'Cormorant Garamond',serif;font-size:20px}
.bookbar .btn{border-radius:0;height:100%;padding:0 40px}

/* ---------- Section ---------- */
.section{padding:110px 0}
.section--sea{background:var(--sea);color:#fff}
.section--sand{background:var(--sand)}
.eyebrow{font-size:11px;letter-spacing:4px;text-transform:uppercase;color:var(--sea);opacity:.8;display:inline-flex;align-items:center;gap:14px;font-weight:500}
.eyebrow::before{content:"";width:34px;height:1px;background:currentColor}
.section--sea .eyebrow{color:var(--sand)}
.section__title{font-size:clamp(34px,4.4vw,60px);margin-top:18px}
.section__title em{font-style:italic;color:var(--sand-deep)}
.section--sea .section__title em{color:var(--sand)}
.lead{font-family:'Cormorant Garamond',serif;font-size:22px;line-height:1.45;color:var(--text)}
.section--sea .lead{color:rgba(255,255,255,.9)}
.muted{color:var(--muted)}
.section--sea .muted{color:rgba(255,255,255,.7)}

/* ---------- Giới thiệu lệch ---------- */
.intro{display:grid;grid-template-columns:5fr 7fr;gap:80px;align-items:center}
.intro__text{padding-left:4vw}
.intro__text p{margin-top:18px;font-size:15.5px}
.intro__pic{position:relative;aspect-ratio:4/5}
.intro__pic .ph{position:absolute;inset:0}
.intro__pic .ph--2{inset:auto -8% -10% auto;width:50%;aspect-ratio:1;border:12px solid var(--cream)}
.intro__badge{position:absolute;left:-30px;top:40px;background:var(--sea);color:#fff;padding:22px 24px;text-align:center;line-height:1.1}
.intro__badge b{display:block;font-family:'Cormorant Garamond',serif;font-size:44px;font-weight:400}
.intro__badge small{font-size:10px;letter-spacing:2.5px;text-transform:uppercase;opacity:.8}

/* ---------- Full-bleed ---------- */
.bleed{position:relative;min-height:80vh;display:grid;align-items:end;color:#fff;overflow:hidden}
.bleed .ph{position:absolute;inset:0;transform:scale(1.02)}
.bleed::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(8,42,56,.8))}
.bleed__in{position:relative;z-index:1;padding:80px 0}
.bleed__in .section__title{max-width:700px}
.bleed__in p{max-width:520px;margin:18px 0 30px;font-size:16px;opacity:.9}
.bleed--r .bleed__in{text-align:right;margin-left:auto}
.bleed--r .bleed__in > *{margin-left:auto}

/* ---------- Phòng nghỉ masonry ---------- */
.rooms{columns:3;column-gap:28px}
.room{break-inside:avoid;margin-bottom:28px;display:block;position:relative}
.room .ph{width:100%;transition:.4s}
.room--tall .ph{aspect-ratio:3/4}
.room--wide .ph{aspect-ratio:4/3}
.room--sq .ph{aspect-ratio:1}
.room:hover .ph{filter:brightness(.92)}
.room__body{padding:18px 4px 6px}
.room__body h3{font-size:26px}
.room__meta{display:flex;gap:16px;font-size:12.5px;color:var(--muted);margin-top:6px;flex-wrap:wrap}
.room__meta span{display:flex;align-items:center;gap:6px}
.room__meta svg{width:14px;height:14px;color:var(--sand-deep)}
.room__price{margin-top:10px;font-family:'Cormorant Garamond',serif;font-size:22px;color:var(--sea)}
.room__price small{font-family:'Be Vietnam Pro',sans-serif;font-size:12px;color:var(--muted)}
.room__tag{position:absolute;top:16px;left:16px;background:var(--sand);color:var(--sea-deep);padding:6px 12px;font-size:10px;letter-spacing:2px;text-transform:uppercase;font-weight:500}

/* ---------- Trải nghiệm: băng ảnh chạy ---------- */
.reel{overflow:hidden;margin-top:50px}
.reel__track{display:flex;gap:20px;width:max-content;animation:reel 60s linear infinite}
.reel:hover .reel__track{animation-play-state:paused}
.reel__item{width:380px;flex:none;position:relative}
.reel__item .ph{aspect-ratio:4/5}
.reel__item span{position:absolute;left:0;right:0;bottom:0;padding:60px 22px 20px;color:#fff;font-family:'Cormorant Garamond',serif;font-size:26px;background:linear-gradient(180deg,transparent,rgba(8,42,56,.85))}
.reel__item small{display:block;font-family:'Be Vietnam Pro',sans-serif;font-size:11px;letter-spacing:2.5px;text-transform:uppercase;opacity:.8;margin-top:2px}
@keyframes reel{to{transform:translateX(-50%)}}

/* ---------- Tiện nghi: lưới đường kẻ mảnh ---------- */
.amen{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.15);border-left:1px solid rgba(255,255,255,.15)}
.amen div{padding:40px 30px;border-right:1px solid rgba(255,255,255,.15);border-bottom:1px solid rgba(255,255,255,.15)}
.amen svg{width:30px;height:30px;color:var(--sand);margin-bottom:20px}
.amen b{display:block;font-family:'Cormorant Garamond',serif;font-size:24px;font-weight:400;margin-bottom:6px}
.amen p{font-size:13.5px;opacity:.7}

/* ---------- Nhận xét lớn ---------- */
.testi{text-align:center;max-width:820px;margin-inline:auto}
.testi p{font-family:'Cormorant Garamond',serif;font-size:clamp(24px,3vw,36px);line-height:1.35;font-style:italic}
.testi__who{margin-top:30px;display:flex;flex-direction:column;align-items:center;gap:10px}
.testi__who .ph{width:56px;height:56px;border-radius:50%}
.testi__who b{font-size:13px;letter-spacing:2px;text-transform:uppercase}
.testi__who small{color:var(--muted);font-size:12.5px}
.testi__dots{display:flex;gap:8px;justify-content:center;margin-top:30px}
.testi__dots span{width:8px;height:8px;border-radius:50%;background:var(--line)}
.testi__dots span.is-active{background:var(--sea)}

/* ---------- Ưu đãi ---------- */
.offers{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.offer{background:#fff;padding:12px;display:flex;flex-direction:column}
.offer .ph{aspect-ratio:4/3}
.offer__body{padding:24px 14px 14px;display:flex;flex-direction:column;flex:1}
.offer__body small{font-size:11px;letter-spacing:2.5px;text-transform:uppercase;color:var(--sand-deep);font-weight:500}
.offer__body h3{font-size:26px;margin:6px 0 10px}
.offer__body p{font-size:14px;color:var(--muted)}
.offer__foot{margin-top:auto;padding-top:18px;display:flex;justify-content:space-between;align-items:center}
.offer__foot b{font-family:'Cormorant Garamond',serif;font-size:22px;color:var(--sea)}

/* ---------- Banner trang con ---------- */
.pagehead{position:relative;height:62vh;min-height:440px;color:#fff;display:flex;align-items:flex-end}
.pagehead .ph{position:absolute;inset:0}
.pagehead::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,42,56,.3),rgba(8,42,56,.7))}
.pagehead__in{position:relative;z-index:1;width:100%;padding-bottom:70px}
.pagehead h1{font-size:clamp(44px,6.5vw,90px);margin-top:16px}
.pagehead p{max-width:560px;margin-top:12px;opacity:.9;font-size:16px}
.crumbs{display:flex;gap:10px;font-size:11px;letter-spacing:2px;text-transform:uppercase;opacity:.75;margin-top:20px}

/* ---------- Chi tiết phòng ---------- */
.gallery{display:grid;grid-template-columns:2fr 1fr 1fr;grid-template-rows:280px 280px;gap:12px}
.gallery .ph:first-child{grid-row:span 2}
.detail{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:70px;align-items:start;margin-top:60px}
.detail__side{position:sticky;top:96px;background:#fff;padding:30px;box-shadow:var(--shadow)}
.detail__side .price{font-family:'Cormorant Garamond',serif;font-size:40px;color:var(--sea);line-height:1}
.detail__side .price small{font-family:'Be Vietnam Pro',sans-serif;font-size:12px;color:var(--muted)}
.detail__side .field{margin-top:14px}
.detail__side label{display:block;font-size:10px;letter-spacing:2.5px;text-transform:uppercase;color:var(--muted);margin-bottom:6px;font-weight:500}
.detail__side input,.detail__side select{width:100%;border:1px solid var(--line);padding:12px 14px;font:inherit;background:var(--cream);outline:none}
.detail__side .btn{width:100%;margin-top:20px}
.detail__side .total{display:flex;justify-content:space-between;margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:14px}
.detail h2{font-size:32px;margin:40px 0 14px}
.detail .body p{color:var(--muted);margin-bottom:14px;font-size:15.5px}
.feat{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 30px;list-style:none;font-size:14.5px}
.feat li{display:flex;gap:12px;align-items:center;padding:8px 0;border-bottom:1px solid var(--line)}
.feat svg{color:var(--sand-deep);width:16px;height:16px}

/* ---------- Bảng giá theo ngày ---------- */
.rate{width:100%;border-collapse:collapse;font-size:14.5px;background:#fff}
.rate th,.rate td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line)}
.rate th{font-size:10.5px;letter-spacing:2.5px;text-transform:uppercase;color:var(--muted);font-weight:500;background:var(--sea-soft)}
.rate td b{font-family:'Cormorant Garamond',serif;font-size:20px;color:var(--sea);font-weight:400}
.rate td small{color:var(--muted);font-size:12.5px}

/* ---------- Form đặt phòng 2 bước ---------- */
.steps{display:flex;gap:0;margin-bottom:40px;border-bottom:1px solid var(--line)}
.steps div{padding:14px 26px 14px 0;margin-right:26px;font-size:11px;letter-spacing:2.5px;text-transform:uppercase;color:var(--muted);display:flex;align-items:center;gap:12px;border-bottom:2px solid transparent;margin-bottom:-1px}
.steps div span{width:28px;height:28px;border-radius:50%;border:1px solid currentColor;display:grid;place-items:center;font-size:12px}
.steps div.is-active{color:var(--sea);border-color:var(--sea)}
.steps div.is-active span{background:var(--sea);color:#fff;border-color:var(--sea)}
.form{background:#fff;padding:44px;box-shadow:var(--shadow)}
.form__grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{display:flex;flex-direction:column;gap:6px}
.field--full{grid-column:1/-1}
.field label{font-size:10px;letter-spacing:2.5px;text-transform:uppercase;color:var(--muted);font-weight:500}
.field input,.field select,.field textarea{border:1px solid var(--line);padding:13px 14px;font:inherit;background:var(--cream);outline:none;transition:.2s}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--sea);background:#fff}
.field textarea{min-height:100px;resize:vertical}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips label{display:inline-flex;align-items:center;gap:8px;padding:9px 14px;border:1px solid var(--line);font-size:13px;cursor:pointer;background:var(--cream)}
.chips input{accent-color:var(--sea)}
.summary{background:var(--sea);color:#fff;padding:34px}
.summary h3{font-size:26px;margin-bottom:18px}
.summary div{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.12);font-size:14px}
.summary div span:first-child{opacity:.7}
.summary .total{font-family:'Cormorant Garamond',serif;font-size:24px;border:0;padding-top:16px}

/* ---------- Liên hệ ---------- */
.contact{display:grid;grid-template-columns:1fr 1.2fr;gap:70px}
.contact__list{display:grid;gap:22px;margin-top:30px}
.contact__list div{display:flex;gap:16px}
.contact__list svg{width:22px;height:22px;color:var(--sand-deep);margin-top:2px}
.contact__list b{display:block;font-size:10px;letter-spacing:2.5px;text-transform:uppercase;color:var(--muted);font-weight:500;margin-bottom:2px}
.map{aspect-ratio:16/7;margin-top:70px;filter:saturate(.4)}

/* ---------- Footer ---------- */
.footer{background:var(--sea-deep);color:#fff;padding:80px 0 0}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer .logo{display:flex;padding:0}
.footer__col p{opacity:.65;font-size:13.5px;margin-top:18px;max-width:340px}
.footer__col h4{font-family:'Be Vietnam Pro',sans-serif;font-size:10px;letter-spacing:3px;text-transform:uppercase;color:var(--sand);margin-bottom:20px;font-weight:500}
.footer__col a{display:block;padding:5px 0;font-size:14px;opacity:.8}
.footer__col a:hover{color:var(--sand);opacity:1}
.footer__col li{list-style:none;display:flex;gap:10px;padding:5px 0;font-size:14px;opacity:.8}
.footer__col svg{width:15px;height:15px;color:var(--sand);margin-top:4px}
.footer__bar{margin-top:60px;border-top:1px solid rgba(255,255,255,.1);padding:22px 0;font-size:12px;opacity:.55}
.footer__bar-in{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* ---------- Responsive ---------- */
@media (max-width:1100px){
  .rooms{columns:2}
  .offers{grid-template-columns:repeat(2,1fr)}
  .amen{grid-template-columns:repeat(2,1fr)}
  .footer__grid{grid-template-columns:1fr 1fr}
  .detail{grid-template-columns:1fr}
  .detail__side{position:static}
  .overlay{grid-template-columns:1fr}
  .overlay__side{display:none}
}
@media (max-width:980px){
  .intro{grid-template-columns:1fr;gap:50px}
  .intro__text{padding-left:0}
  .intro__badge{left:0}
  .bookbar__in{grid-template-columns:1fr 1fr}
  .bookbar .btn{grid-column:1/-1;padding:18px}
  .bookbar__in > div:nth-child(2n){border-right:0}
  .bookbar__in > div{border-bottom:1px solid var(--line)}
  .hero__scroll{display:none}
  .hero__in{padding-bottom:120px}
  .contact{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr 1fr;grid-template-rows:240px 200px 200px}
  .gallery .ph:first-child{grid-column:span 2;grid-row:auto}
  .form{padding:30px 24px}
}
@media (max-width:900px){
  .section{padding:70px 0}
}
@media (max-width:640px){
  .container{width:min(1280px,100% - 32px)}
  .rooms{columns:1}
  .offers,.amen{grid-template-columns:1fr}
  .bookbar__in{grid-template-columns:1fr}
  .bookbar__in > div{border-right:0}
  .form__grid,.feat{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr}
  .hero{min-height:560px}
  .reel__item{width:280px}
  .overlay__nav{padding:100px 24px 40px}
  .bleed{min-height:70vh}
  .bleed--r .bleed__in{text-align:left}
  .bleed--r .bleed__in > *{margin-left:0}
  .menu-btn span{display:none}
}