/* ====== Đồng Xanh — Eco Resort ====== */
@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,500;0,600;0,700;1,500&display=swap');

:root{
  --forest:#1c3a29;
  --forest-2:#2d5a3d;
  --moss:#4d7c52;
  --sage:#8fae8b;
  --gold:#c5a253;
  --gold-soft:#d9c08a;
  --cream:#f6f3ea;
  --ivory:#fbfaf5;
  --ink:#1a2620;
  --terra:#b5683f;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Be Vietnam Pro',system-ui,sans-serif;
  color:var(--ink);
  background:var(--ivory);
  margin:0;
  overflow-x:hidden;
}
.dark body{background:#0d1712;color:#e7ede8}

.font-display{font-family:'Playfair Display',Georgia,serif}

/* ---- Header ---- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  transition:all .45s cubic-bezier(.4,0,.2,1);
  padding:1.15rem 0;
}
.nav.scrolled{
  background:rgba(251,250,245,.92);
  backdrop-filter:blur(12px);
  box-shadow:0 4px 24px rgba(28,58,41,.08);
  padding:.65rem 0;
}
.dark .nav.scrolled{background:rgba(13,23,18,.9);box-shadow:0 4px 24px rgba(0,0,0,.4)}
.nav-link{position:relative;cursor:pointer;transition:color .25s;letter-spacing:.02em}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:-4px;height:2px;width:0;
  background:var(--gold);transition:width .3s ease;
}
.nav-link:hover::after,.nav-link.active::after{width:100%}
.nav-link.active{color:var(--gold)}

/* ---- Views / transitions ---- */
.view{display:none;animation:fadeUp .7s cubic-bezier(.22,1,.36,1)}
.view.active{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}

/* ---- Hero ---- */
.hero{
  position:relative;height:100vh;min-height:620px;
  display:flex;align-items:center;justify-content:center;
  overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background:url('images/hero_aerial.jpeg') center/cover no-repeat;
  transform:scale(1.08);
  animation:slowZoom 18s ease-in-out infinite alternate;
}
@keyframes slowZoom{to{transform:scale(1.18)}}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,40,28,.35) 0%,rgba(20,40,28,.15) 40%,rgba(15,28,20,.75) 100%)}

/* ---- Reveal on scroll ---- */
.reveal{opacity:0;transform:translateY(40px);transition:opacity .9s ease,transform .9s cubic-bezier(.22,1,.36,1)}
.reveal.in{opacity:1;transform:none}
.reveal-d1{transition-delay:.12s}.reveal-d2{transition-delay:.24s}.reveal-d3{transition-delay:.36s}.reveal-d4{transition-delay:.48s}

/* ---- Buttons ---- */
.btn-gold{background:var(--gold);color:#1c2b1f;font-weight:600;border-radius:999px;transition:all .3s;border:1px solid var(--gold)}
.btn-gold:hover{background:transparent;color:var(--gold);transform:translateY(-2px);box-shadow:0 10px 30px rgba(197,162,83,.3)}
.btn-out{border:1px solid rgba(255,255,255,.7);color:#fff;border-radius:999px;transition:all .3s}
.btn-out:hover{background:#fff;color:var(--forest)}
.btn-forest{background:var(--forest-2);color:#fff;border-radius:999px;transition:all .3s;border:1px solid var(--forest-2)}
.btn-forest:hover{background:var(--forest);transform:translateY(-2px)}

/* ---- Cards ---- */
.card{background:#fff;border-radius:18px;overflow:hidden;transition:transform .45s cubic-bezier(.22,1,.36,1),box-shadow .45s;box-shadow:0 6px 24px rgba(28,58,41,.07)}
.card:hover{transform:translateY(-8px);box-shadow:0 24px 48px rgba(28,58,41,.16)}
.dark .card{background:#15241c}
.card-img{height:240px;overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .8s ease}
.card:hover .card-img img{transform:scale(1.09)}

.tag{font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gold);font-weight:600}

/* ---- Section helpers ---- */
.kicker{letter-spacing:.22em;text-transform:uppercase;font-size:.72rem;font-weight:600;color:var(--moss)}
.dark .kicker{color:var(--sage)}

/* ---- 3D map hotspots ---- */
.map-wrap{position:relative;border-radius:22px;overflow:hidden;box-shadow:0 20px 50px rgba(28,58,41,.18)}
.map-wrap img{width:100%;display:block}
.hotspot{
  position:absolute;width:30px;height:30px;border-radius:50%;
  background:var(--gold);border:3px solid #fff;cursor:pointer;
  box-shadow:0 0 0 0 rgba(197,162,83,.7);
  animation:pulse 2.2s infinite;transform:translate(-50%,-50%);
}
.hotspot:hover{background:var(--terra)}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(197,162,83,.55)}70%{box-shadow:0 0 0 16px rgba(197,162,83,0)}100%{box-shadow:0 0 0 0 rgba(197,162,83,0)}}
.hotspot-label{
  position:absolute;bottom:18px;left:18px;right:18px;
  background:rgba(20,40,28,.92);color:#fff;padding:1rem 1.25rem;border-radius:14px;
  backdrop-filter:blur(6px);transition:opacity .3s;
}

/* ---- Segment selector (booking) ---- */
.seg{cursor:pointer;border:1.5px solid rgba(28,58,41,.14);border-radius:16px;transition:all .3s;background:#fff}
.dark .seg{background:#15241c;border-color:rgba(255,255,255,.1)}
.seg:hover{border-color:var(--gold);transform:translateY(-4px)}
.seg.active{border-color:var(--gold);background:linear-gradient(180deg,rgba(197,162,83,.12),transparent);box-shadow:0 12px 30px rgba(197,162,83,.18)}
.seg-ico{font-size:2rem}

.field{width:100%;border:1px solid rgba(28,58,41,.2);border-radius:10px;padding:.7rem .9rem;font-family:inherit;font-size:.9rem;background:#fff;transition:border .25s}
.field:focus{outline:none;border-color:var(--gold);box-shadow:0 0 0 3px rgba(197,162,83,.15)}
.dark .field{background:#0f1b14;border-color:rgba(255,255,255,.14);color:#e7ede8}

.svc-chip{border:1px solid rgba(28,58,41,.2);border-radius:999px;padding:.4rem .9rem;cursor:pointer;transition:all .25s;font-size:.82rem}
.svc-chip.on{background:var(--forest-2);color:#fff;border-color:var(--forest-2)}

/* ---- Menu tabs ---- */
.menu-tab{cursor:pointer;padding:.5rem 1.1rem;border-radius:999px;transition:all .3s;font-weight:500}
.menu-tab.active{background:var(--forest-2);color:#fff}

/* ---- misc ---- */
.glass-stat{background:rgba(255,255,255,.12);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.2);border-radius:16px}
.divider-leaf{display:flex;align-items:center;justify-content:center;gap:.8rem;color:var(--gold)}
.divider-leaf::before,.divider-leaf::after{content:"";height:1px;width:60px;background:var(--gold);opacity:.5}
::-webkit-scrollbar{width:10px}::-webkit-scrollbar-thumb{background:var(--moss);border-radius:8px}
.scroll-hint{animation:bob 2s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(10px)}}

/* ---- Drone / UAV HUD overlay ---- */
.uav{position:relative}
.uav-bg{position:absolute;inset:0;background:radial-gradient(ellipse at center,transparent 55%,rgba(8,18,12,.45) 100%);pointer-events:none;z-index:2}
.uav-hud{position:absolute;inset:0;pointer-events:none;z-index:3;font-family:'Courier New',monospace;color:#eafff0;text-shadow:0 1px 4px rgba(0,0,0,.7)}
.uav-corner{position:absolute;width:34px;height:34px;border:2px solid rgba(234,255,240,.85)}
.uav-corner.tl{top:14px;left:14px;border-right:0;border-bottom:0}
.uav-corner.tr{top:14px;right:14px;border-left:0;border-bottom:0}
.uav-corner.bl{bottom:14px;left:14px;border-right:0;border-top:0}
.uav-corner.br{bottom:14px;right:14px;border-left:0;border-top:0}
.uav-tag{position:absolute;font-size:.72rem;letter-spacing:.12em;display:flex;align-items:center;gap:.4rem;background:rgba(8,18,12,.35);padding:.25rem .55rem;border-radius:5px;backdrop-filter:blur(2px)}
.uav-rec{top:20px;left:60px}
.uav-alt{top:20px;right:60px}
.uav-coord{bottom:62px;left:60px}
.uav-mode{bottom:62px;right:60px}
.rec-dot{width:9px;height:9px;border-radius:50%;background:#ff4d4d;animation:recblink 1.3s infinite}
@keyframes recblink{0%,100%{opacity:1}50%{opacity:.2}}
.uav-cross{position:absolute;top:50%;left:50%;width:42px;height:42px;transform:translate(-50%,-50%);opacity:.55}
.uav-cross::before,.uav-cross::after{content:"";position:absolute;background:rgba(234,255,240,.8)}
.uav-cross::before{left:50%;top:0;width:1.5px;height:100%;transform:translateX(-50%)}
.uav-cross::after{top:50%;left:0;height:1.5px;width:100%;transform:translateY(-50%)}
.uav-scan{position:absolute;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,rgba(140,255,180,.5),transparent);z-index:2;animation:scan 6s linear infinite;pointer-events:none}
@keyframes scan{0%{top:0}100%{top:100%}}

/* hotspots above HUD */
.map-wrap .hotspot{z-index:7}
.map-wrap .hotspot-label{z-index:7}

/* ---- Flycam pan/zoom viewport ---- */
.uav-viewport{position:relative;overflow:hidden;cursor:grab;touch-action:none;z-index:1}
.uav-viewport:active{cursor:grabbing}
.uav-stage{position:relative;transform-origin:center center;will-change:transform}
.uav-stage img{display:block;width:100%;user-select:none;-webkit-user-drag:none}

/* zoom controls */
.uav-controls{position:absolute;right:16px;bottom:54px;z-index:8;display:flex;flex-direction:column;gap:6px}
.uav-controls button{width:38px;height:38px;border-radius:10px;background:rgba(8,18,12,.6);color:#eafff0;border:1px solid rgba(234,255,240,.3);font-size:1.2rem;cursor:pointer;backdrop-filter:blur(4px);transition:background .2s,transform .2s}
.uav-controls button:hover{background:var(--gold);color:#1c2b1f;transform:scale(1.06)}
.uav-hint{position:absolute;left:50%;bottom:16px;transform:translateX(-50%);z-index:8;font-size:.7rem;color:#eafff0;background:rgba(8,18,12,.55);padding:.32rem .8rem;border-radius:999px;backdrop-filter:blur(4px);pointer-events:none;white-space:nowrap}

/* hotspot popup card */
.spot-card{position:absolute;left:16px;bottom:16px;z-index:9;width:min(300px,74%);background:rgba(10,20,14,.93);border:1px solid rgba(197,162,83,.45);border-radius:16px;overflow:hidden;backdrop-filter:blur(8px);color:#fff;box-shadow:0 18px 44px rgba(0,0,0,.45);animation:fadeUp .35s cubic-bezier(.22,1,.36,1)}
.spot-card img{width:100%;height:150px;object-fit:cover}
.spot-body{padding:.8rem 1rem 1rem}
.spot-body h4{font-family:'Playfair Display',serif;color:#d9c08a;font-weight:700;font-size:1.05rem;margin-bottom:.25rem}
.spot-body p{font-size:.82rem;color:rgba(255,255,255,.8);line-height:1.45}
.spot-close{position:absolute;top:8px;right:8px;z-index:2;color:#fff;background:rgba(0,0,0,.5);width:28px;height:28px;border-radius:50%;font-size:1.1rem;line-height:1;cursor:pointer;border:none}
.spot-close:hover{background:var(--terra)}

/* flycam gallery */
.fly-thumb{width:100%;height:120px;object-fit:cover;border-radius:12px;cursor:pointer;transition:transform .4s,filter .4s;box-shadow:0 6px 18px rgba(28,58,41,.12)}
.fly-thumb:hover{transform:scale(1.04);filter:brightness(1.08)}

/* lightbox */
.lightbox{position:fixed;inset:0;z-index:200;background:rgba(5,12,8,.93);display:none;align-items:center;justify-content:center;flex-direction:column;gap:1rem;padding:2rem;animation:fadeUp .3s}
.lightbox.open{display:flex}
.lightbox img{max-width:92%;max-height:78vh;border-radius:14px;box-shadow:0 24px 70px rgba(0,0,0,.6)}
.lb-close{position:absolute;top:18px;right:26px;font-size:2.2rem;color:#fff;background:none;border:none;cursor:pointer;line-height:1}
.lb-cap{color:#eafff0;font-size:.95rem;letter-spacing:.04em}