/* Nature House — style chung */
:root{
  --green-900:#1e3a24;--green-700:#2f5233;--green-500:#4a7c50;--green-100:#e8f0e4;
  --cream:#faf7f0;--beige:#f3ecdf;--ink:#22302a;--muted:#5f6f66;--white:#fff;
  --radius:14px;--shadow:0 6px 24px rgba(30,58,36,.10);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;color:var(--ink);background:var(--cream);line-height:1.6}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:10px;font-weight:600;font-size:15px;border:none;cursor:pointer;transition:.2s}
.btn-primary{background:var(--green-700);color:#fff}
.btn-primary:hover{background:var(--green-900)}
.btn-outline{background:#fff;color:var(--green-700);border:1.5px solid var(--green-700)}
.btn-outline:hover{background:var(--green-100)}
.btn-zalo{background:#0068ff;color:#fff;width:100%;justify-content:center}
.btn-zalo:hover{background:#0052cc}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);box-shadow:0 1px 0 rgba(30,58,36,.08)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--green-700)}
.brand img{height:44px;width:auto}
.brand .name{font-size:19px;letter-spacing:.5px;line-height:1.1}
.brand .sub{font-size:10px;letter-spacing:3px;color:var(--muted);font-weight:600}
.menu{display:flex;gap:26px;align-items:center;font-weight:500;font-size:15px}
.menu a{padding:6px 2px;border-bottom:2px solid transparent;color:var(--ink)}
.menu a:hover{color:var(--green-700)}
.menu a.active{color:var(--green-700);border-bottom-color:var(--green-700);font-weight:600}
.nav-cta{display:flex;align-items:center;gap:14px}
.lang{font-size:13px;color:var(--muted);font-weight:600}
.lang b{color:var(--green-700)}
.hamburger{display:none;background:none;border:none;font-size:26px;color:var(--green-700);cursor:pointer}

/* Hero */
.hero{position:relative;min-height:520px;display:flex;align-items:center;color:#fff;background:linear-gradient(rgba(20,40,25,.55),rgba(20,40,25,.55)),url('../images/IMG_1809.jpg') center/cover}
.hero .eyebrow{font-size:14px;letter-spacing:2px;text-transform:uppercase;opacity:.9;margin-bottom:12px}
.hero h1{font-size:clamp(28px,4.5vw,46px);line-height:1.25;max-width:760px;margin-bottom:16px}
.hero p{max-width:620px;font-size:17px;opacity:.95;margin-bottom:26px}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap}

/* Stats */
.stats{background:var(--green-700);color:#fff}
.stats .container{display:flex;justify-content:space-around;padding:26px 20px;gap:20px;flex-wrap:wrap;text-align:center}
.stat b{font-size:30px;display:block}
.stat span{font-size:14px;opacity:.85}

/* Sections */
section{padding:64px 0}
.kicker{color:var(--green-500);font-weight:700;letter-spacing:2px;text-transform:uppercase;font-size:13px;margin-bottom:8px}
h2.title{font-size:clamp(24px,3vw,34px);color:var(--green-900);margin-bottom:12px}
.lead{color:var(--muted);max-width:720px;margin-bottom:36px}

/* Cards */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.card img{height:210px;width:100%;object-fit:cover}
.card .body{padding:20px}
.card h3{color:var(--green-900);font-size:18px;margin-bottom:8px}
.card p{color:var(--muted);font-size:14.5px}

/* Reviews */
.reviews{background:var(--beige)}
.review{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.review .who{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review .who img{width:34px;height:34px;border-radius:50%;object-fit:cover}
.review .who b{display:block;font-size:15px}
.review .who span{font-size:13px;color:var(--muted)}
.review q{font-size:14.5px;color:var(--ink)}

/* Map */
.map-wrap{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;align-items:start}
.map-frame{border:0;width:100%;height:360px;border-radius:var(--radius);box-shadow:var(--shadow)}
.poi{background:#fff;border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.poi h3{color:var(--green-900);margin-bottom:14px;font-size:17px}
.poi li{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px dashed #dfe6da;list-style:none;font-size:14.5px}
.poi li:last-child{border-bottom:none}
.poi li b{color:var(--green-700);font-weight:600}

/* Footer */
footer{background:var(--green-900);color:#e8f0e4;padding:54px 0 26px}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1.2fr;gap:36px}
.foot-grid h4{margin-bottom:14px;font-size:16px}
.foot-grid p,.foot-grid a{font-size:14px;opacity:.9;line-height:1.9}
.foot-brand img{height:52px;margin-bottom:10px;background:#fff;border-radius:10px;padding:6px}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.gallery img{height:70px;width:100%;object-fit:cover;border-radius:8px}
.copyright{text-align:center;margin-top:36px;font-size:13px;opacity:.7;border-top:1px solid rgba(255,255,255,.15);padding-top:18px}

/* ===== Trang Đặt phòng ===== */
.page-head{background:linear-gradient(90deg,var(--cream) 55%,rgba(250,247,240,.2)),url('../images/IMG_1812.jpg') right/40% no-repeat;padding:46px 0 34px;border-bottom:1px solid #e5e0d3}
.page-head h1{font-size:clamp(28px,4vw,40px);color:var(--green-900);letter-spacing:1px}
.page-head p{color:var(--muted);margin-top:6px}

.rooms-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.room-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.room-card .thumb{position:relative}
.room-card .thumb img{height:170px;width:100%;object-fit:cover}
.badge{position:absolute;top:10px;left:10px;background:var(--green-900);color:#fff;font-size:12.5px;font-weight:700;padding:5px 12px;border-radius:7px}
.badge.free{background:#1c7c35}
.room-card .body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:10px;flex:1}
.meta{display:flex;gap:14px;color:var(--muted);font-size:13px}
.meta span{display:inline-flex;align-items:center;gap:5px}
.prices{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;text-align:center}
.prices div{background:var(--green-100);border-radius:8px;padding:7px 4px}
.prices b{display:block;color:var(--green-900);font-size:14px}
.prices span{font-size:11px;color:var(--muted)}
.room-card .btn-detail{margin-top:auto}
.room-card .btn-zalo{padding:9px}
.btn-detail{background:#fff;border:1.5px solid var(--green-700);color:var(--green-700);width:100%;justify-content:center;padding:9px}
.btn-detail:hover{background:var(--green-100)}

/* Availability checker */
.checker-wrap{display:grid;grid-template-columns:330px 1fr;gap:22px;align-items:start}
.checker{background:#fff;border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);position:sticky;top:84px}
.checker h3{display:flex;align-items:center;gap:10px;color:var(--green-900);font-size:17px;margin-bottom:16px;letter-spacing:.5px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:6px}
.field input{width:100%;padding:11px 12px;border:1.5px solid #d8dfd2;border-radius:9px;font-size:15px;font-family:inherit;background:var(--cream)}
.field input:focus{outline:none;border-color:var(--green-500)}
.nights{font-size:14px;color:var(--muted);margin-bottom:14px}
.nights b{color:var(--green-900)}
.support{margin-top:18px;border-top:1px dashed #dfe6da;padding-top:16px}
.support h4{font-size:15px;color:var(--green-900);margin-bottom:6px}
.support p{font-size:13px;color:var(--muted);margin-bottom:12px}
.results{background:#fff;border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.results h3{color:var(--green-900);font-size:20px;margin-bottom:4px}
.results .sub{font-size:14px;color:var(--muted);margin-bottom:18px}
.results .note{display:flex;gap:8px;align-items:center;font-size:13.5px;color:var(--muted);margin-top:16px}
.results-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.empty{padding:30px;text-align:center;color:var(--muted)}

/* Cam kết */
.pledges{background:var(--beige)}
.pledges .container{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.pledge .ico{font-size:30px;margin-bottom:8px}
.pledge b{color:var(--green-900);display:block;letter-spacing:1px}
.pledge span{font-size:13.5px;color:var(--muted)}

/* Modal */
.modal-bg{position:fixed;inset:0;background:rgba(20,30,22,.6);display:none;align-items:center;justify-content:center;z-index:100;padding:18px}
.modal-bg.open{display:flex}
.modal{background:#fff;border-radius:16px;max-width:560px;width:100%;max-height:90vh;overflow:auto;position:relative}
.modal img.photo{height:240px;width:100%;object-fit:cover}
.modal .body{padding:22px}
.modal h3{color:var(--green-900);font-size:22px;margin-bottom:6px}
.modal .close{position:absolute;top:12px;right:12px;background:#fff;border:none;width:34px;height:34px;border-radius:50%;font-size:17px;cursor:pointer;box-shadow:var(--shadow)}
.fee-list{margin:14px 0;font-size:14px;color:var(--muted)}
.fee-list li{margin-left:18px;margin-bottom:4px}

/* Toast */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--green-900);color:#fff;padding:13px 22px;border-radius:12px;font-size:14.5px;z-index:200;display:none;max-width:92vw;text-align:center}
.toast.show{display:block;animation:fade .3s}
@keyframes fade{from{opacity:0;transform:translate(-50%,8px)}to{opacity:1;transform:translate(-50%,0)}}

/* Responsive */
@media(max-width:1024px){
  .rooms-grid{grid-template-columns:repeat(3,1fr)}
  .results-grid{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:820px){
  .menu{position:fixed;top:68px;right:0;background:#fff;flex-direction:column;width:230px;padding:20px;gap:16px;box-shadow:var(--shadow);transform:translateX(105%);transition:.25s;border-radius:0 0 0 14px}
  .menu.open{transform:none}
  .hamburger{display:block}
  .nav-cta .btn{display:none}
  .checker-wrap{grid-template-columns:1fr}
  .checker{position:static}
  .map-wrap{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .pledges .container{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:600px){
  .rooms-grid{grid-template-columns:repeat(2,1fr)}
  .results-grid{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .room-card .thumb img{height:130px}
  .prices b{font-size:12.5px}
  .hero{min-height:440px}
}