/* ============================================================
   THE AN HERITAGE — LANDING PAGE v2
   Theo yêu cầu khách hàng (landing.docx)
   Font: Montserrat (toàn bộ)
   Màu: Navy #07071a · Gold #C9A84C · Cream #F5F0E8
============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --gold:     #C9A84C;
  --gold-lt:  #E8C97E;
  --gold-dk:  #8B6914;
  --navy:     #07071a;
  --navy-2:   #0d0d2b;
  --navy-3:   #141433;
  --navy-4:   #1a1a3e;
  --green:    #4caf7d;
  --cream:    #F5F0E8;
  --muted:    #9B8E7E;
  --font:     'Montserrat', sans-serif;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--navy); color: var(--cream); overflow-x: hidden; }
img  { display: block; width: 100%; height: 100%; object-fit: cover; }
a    { text-decoration: none; color: inherit; }
ul   { list-style: none; }

.container  { max-width: 1200px; margin: 0 auto; padding: 0 48px; }
.hidden     { display: none !important; }

/* ======================== SHARED TYPOGRAPHY ======================== */

.section-label {
  font-size: 10px; font-weight: 700; letter-spacing: 5px;
  text-transform: uppercase; color: var(--gold); margin-bottom: 14px;
}
.section-label.center { text-align: center; }

.section-title {
  font-size: clamp(28px, 3.5vw, 48px); font-weight: 800;
  letter-spacing: 1.5px; line-height: 1.18; text-transform: uppercase;
  color: var(--cream); margin-bottom: 20px;
}
.section-title span { color: var(--gold); font-weight: 300; letter-spacing: 2px; display: block; }
.section-title.center { text-align: center; }

/* ======================== BUTTONS ======================== */

.btn-gold {
  display: inline-block;
  background: linear-gradient(120deg, var(--gold-dk) 0%, var(--gold) 40%, var(--gold-lt) 60%, var(--gold) 100%);
  background-size: 250% auto;
  color: var(--navy);
  font-size: 11px; font-weight: 800; letter-spacing: 3px; text-transform: uppercase;
  padding: 18px 44px; border: none; cursor: pointer;
  transition: background-position .45s ease, transform .2s, box-shadow .3s;
  box-shadow: 0 4px 28px rgba(201,168,76,.35);
}
.btn-gold:hover {
  background-position: right center;
  transform: translateY(-2px);
  box-shadow: 0 8px 40px rgba(201,168,76,.55);
}

/* ======================== HEADER ======================== */

.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  transition: background .4s, backdrop-filter .4s;
}
.header.scrolled {
  background: rgba(7,7,26,.96);
  backdrop-filter: blur(14px);
  box-shadow: 0 2px 32px rgba(0,0,0,.6);
}

.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 78px;
}
.nav-links { display: flex; gap: 40px; }
.nav-links li a {
  font-size: 10px; font-weight: 700; letter-spacing: 3.5px; text-transform: uppercase;
  color: rgba(245,240,232,.75); position: relative; padding-bottom: 4px;
  transition: color .3s;
}
.nav-links li a::after {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 0; height: 1px; background: var(--gold); transition: width .3s;
}
.nav-links li a:hover { color: var(--gold); }
.nav-links li a:hover::after { width: 100%; }

.nav-logo img {
  height: 44px; width: auto;
  filter: brightness(0) invert(1);
  transition: filter .3s, transform .3s;
}
.nav-logo:hover img { transform: scale(1.05); }
.header.scrolled .nav-logo img { filter: none; }

/* ======================== HERO: SPLIT SCREEN ======================== */

.hero {
  position: relative; height: 100vh; min-height: 680px;
  display: flex; overflow: hidden;
}

.hero-half {
  flex: 1;
  position: relative; overflow: hidden;
  transition: flex .75s cubic-bezier(.4,0,.2,1);
  cursor: default;
}
.hero-half:hover { flex: 1.55; }

.hero-half__bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  transition: transform .75s ease;
}
.hero-half:hover .hero-half__bg { transform: scale(1.06); }

.hero-half__overlay {
  position: absolute; inset: 0;
}
.hero-half__overlay--left {
  background: linear-gradient(to right, rgba(7,7,26,.5) 0%, rgba(7,7,26,.75) 100%);
}
.hero-half__overlay--right {
  background: linear-gradient(to left, rgba(7,7,26,.5) 0%, rgba(7,7,26,.75) 100%);
}

.hero-half__label {
  position: absolute; bottom: 48px; left: 40px;
  opacity: 0; transform: translateY(10px);
  transition: opacity .4s, transform .4s;
}
.hero-half__label--right { left: auto; right: 40px; text-align: right; }
.hero-half:hover .hero-half__label { opacity: 1; transform: translateY(0); }

.half-tag {
  display: block;
  font-size: 10px; font-weight: 800; letter-spacing: 4px;
  text-transform: uppercase; color: var(--gold); margin-bottom: 6px;
}
.hero-half__label p {
  font-size: 12px; font-weight: 400; letter-spacing: 1px; color: rgba(245,240,232,.7);
}

/* Hero Center — bên phải, thu nhỏ */
.hero-center {
  position: absolute;
  right: 0; top: 0; bottom: 0;
  width: 50%;
  z-index: 10;
  display: flex; flex-direction: column;
  align-items: flex-start; justify-content: center;
  text-align: left;
  padding: 0 56px 0 40px;
  pointer-events: none;
}
.hero-center .btn-gold { pointer-events: all; }

.hero-tag {
  font-size: 9px; font-weight: 700; letter-spacing: 4px;
  text-transform: uppercase; color: var(--gold);
  margin-bottom: 14px;
  border-left: 2px solid var(--gold); padding-left: 10px;
  animation: fadeDown .8s ease .2s both;
}

.hero-title {
  font-size: clamp(24px, 3.2vw, 46px); font-weight: 900;
  letter-spacing: 2px; line-height: 1.18; text-transform: uppercase;
  color: #fff; margin-bottom: 16px;
  text-shadow: 0 4px 20px rgba(0,0,0,.6);
  animation: fadeDown .8s ease .3s both;
}
.hero-title--accent {
  color: var(--gold-lt); font-weight: 300; letter-spacing: 4px; display: block;
}

.hero-sub {
  font-size: 12px; font-weight: 300; letter-spacing: .5px; line-height: 1.75;
  color: rgba(245,240,232,.75); margin-bottom: 28px; max-width: 360px;
  animation: fadeDown .8s ease .4s both;
}

.hero-center .btn-gold {
  font-size: 11px; padding: 14px 32px;
  animation: fadeDown .8s ease .5s both;
}

/* ---- Mobile slide content (ẩn trên desktop) ---- */
.slide-content { display: none; }

/* ---- Dots indicator (ẩn trên desktop) ---- */
.hero-dots { display: none; }

/* ---- Swipe hint (ẩn trên desktop) ---- */
.swipe-hint { display: none; }

/* Đường chia */
.hero-divider {
  position: absolute; top: 0; left: 50%; width: 2px; height: 100%;
  background: linear-gradient(to bottom, transparent 5%, rgba(201,168,76,.6) 30%, rgba(201,168,76,.6) 70%, transparent 95%);
  pointer-events: none; z-index: 5;
}

/* Scroll indicator */
.hero-scroll {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%); z-index: 10;
}
.hero-scroll span {
  display: block; width: 1px; height: 56px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ======================== SECTION 1: VỊ TRÍ ======================== */

.vi-tri { padding: 120px 0 0; background: var(--navy-2); }

.vi-tri-sub {
  text-align: center; font-size: 16px; font-weight: 300; font-style: italic;
  line-height: 1.9; color: var(--gold-lt); margin-bottom: 80px;
  border-left: 3px solid var(--gold); padding-left: 20px;
  display: inline-block; margin-left: 50%;
  transform: translateX(-50%);
}

/* Hành trình thuyền */
.journey-wrap { padding: 0 0 80px; }

.journey-river-line {
  position: relative; margin-bottom: 48px;
  height: 48px; overflow: visible;
}
.river-track {
  position: relative; height: 48px;
  border-bottom: 2px solid rgba(100,180,220,.25);
  overflow: hidden;
}
.river-wave {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(100,180,220,.08) 50%, transparent 100%);
  animation: waveFlow 3s linear infinite;
}
@keyframes waveFlow {
  from { transform: translateX(-100%); }
  to   { transform: translateX(100%); }
}
.journey-boat-anim {
  position: absolute; top: 4px;
  animation: boatJourney 6s ease-in-out infinite alternate;
}
@keyframes boatJourney {
  0%   { left: 5%; }
  100% { left: 90%; }
}

/* Journey stops */
.journey-stops {
  display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 32px;
}
.journey-stop { display: flex; flex-direction: column; gap: 0; }
.stop-marker { display: flex; align-items: center; gap: 0; margin-bottom: 20px; }
.stop-dot {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--navy-3); border: 2px solid var(--gold);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700; color: var(--gold);
  flex-shrink: 0; z-index: 2;
}
.stop-dot--gold {
  background: var(--gold); color: var(--navy);
  box-shadow: 0 0 20px rgba(201,168,76,.5);
}
.stop-line {
  flex: 1; height: 1px;
  background: linear-gradient(to right, var(--gold), transparent);
  margin-left: 8px;
}

.stop-card {
  background: var(--navy-3); overflow: hidden;
  border: 1px solid rgba(201,168,76,.15);
  transition: border-color .3s, transform .3s;
}
.stop-card:hover { border-color: rgba(201,168,76,.4); transform: translateY(-4px); }
.stop-card--gold { border-color: rgba(201,168,76,.5); box-shadow: 0 8px 32px rgba(201,168,76,.15); }

.stop-img-wrap { height: 200px; overflow: hidden; }
.stop-img-wrap img { transition: transform .6s; }
.stop-card:hover .stop-img-wrap img { transform: scale(1.06); }

.stop-body { padding: 24px; }
.stop-time {
  display: inline-block; font-size: 10px; font-weight: 700;
  letter-spacing: 3px; text-transform: uppercase;
  color: var(--gold); border: 1px solid var(--gold);
  padding: 3px 10px; margin-bottom: 10px;
}
.stop-time--gold { background: var(--gold); color: var(--navy); border-color: var(--gold); }
.stop-body h3 {
  font-size: 18px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; margin-bottom: 10px;
}
.stop-body p { font-size: 13px; line-height: 1.8; color: var(--muted); }
.journey-stop--gold .stop-body h3 { color: var(--gold); }

/* Bản đồ */
.vi-tri-map {
  position: relative; height: 520px; overflow: hidden;
}
.vi-tri-map img { transition: transform 8s ease; }
.vi-tri-map:hover img { transform: scale(1.04); }
.map-badge {
  position: absolute; bottom: 40px; right: 48px;
  background: rgba(7,7,26,.9); border: 1px solid var(--gold);
  padding: 20px 28px; backdrop-filter: blur(8px);
}
.map-badge__label {
  display: block; font-size: 9px; font-weight: 700;
  letter-spacing: 4px; text-transform: uppercase; color: var(--gold); margin-bottom: 6px;
}
.map-badge strong {
  font-size: 14px; font-weight: 600; letter-spacing: 1px; color: var(--cream);
}

/* ======================== SECTION 2: FLIP CARDS ======================== */

.bds-vanhoa { padding: 120px 0; background: var(--navy); }

.bds-sub {
  text-align: center; font-size: 15px; font-weight: 300;
  line-height: 1.9; color: var(--muted); margin-bottom: 64px;
}

.flip-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}

.flip-card {
  perspective: 1000px; height: 360px; cursor: pointer;
}
.flip-card__inner {
  position: relative; width: 100%; height: 100%;
  transform-style: preserve-3d;
  transition: transform .7s cubic-bezier(.4,0,.2,1);
}
.flip-card:hover .flip-card__inner { transform: rotateY(180deg); }

.flip-card__front,
.flip-card__back {
  position: absolute; inset: 0;
  backface-visibility: hidden; -webkit-backface-visibility: hidden;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 40px 36px; text-align: center;
}
.flip-card__front {
  background: var(--navy-3); border: 1px solid rgba(201,168,76,.2);
}
.flip-card__back {
  background: linear-gradient(135deg, var(--navy-4) 0%, var(--navy-2) 100%);
  border: 1px solid var(--gold);
  transform: rotateY(180deg);
}

.flip-icon {
  font-size: 13px; font-weight: 800; letter-spacing: 3px;
  color: var(--gold); margin-bottom: 20px;
  width: 52px; height: 52px; border-radius: 50%;
  border: 1px solid rgba(201,168,76,.4);
  display: flex; align-items: center; justify-content: center;
}
.flip-card__front h3 {
  font-size: 20px; font-weight: 700; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--cream); margin-bottom: 16px; line-height: 1.3;
}
.flip-hint { font-size: 11px; color: var(--gold); letter-spacing: 2px; }

.flip-stat {
  font-size: 38px; font-weight: 800; color: var(--gold);
  letter-spacing: 2px; margin-bottom: 12px;
}
.flip-card__back h4 {
  font-size: 14px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; color: var(--cream); margin-bottom: 14px;
}
.flip-card__back p {
  font-size: 13px; line-height: 1.8; color: var(--muted); margin-bottom: 20px;
}
.flip-badge {
  font-size: 9px; font-weight: 700; letter-spacing: 3px; text-transform: uppercase;
  background: var(--gold); color: var(--navy); padding: 5px 14px;
}

/* ======================== SECTION 3: MÔ HÌNH TĨNH ĐỘNG ======================== */

.mo-hinh { padding: 120px 0; background: var(--navy-2); }

.mo-hinh__sub {
  text-align: center; font-size: 16px; font-weight: 300;
  line-height: 1.9; color: var(--muted); margin-bottom: 64px;
}

.model-layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
}

/* 3D Card */
.model-card-wrap { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.model-hint { font-size: 10px; font-weight: 600; letter-spacing: 3px; color: var(--gold); text-transform: uppercase; }

.model-card {
  width: 100%; height: 500px; perspective: 1200px; cursor: pointer;
}
.model-card__inner {
  position: relative; width: 100%; height: 100%;
  transform-style: preserve-3d;
  transition: transform .9s cubic-bezier(.4,0,.2,1);
}
.model-card.flipped .model-card__inner { transform: rotateY(180deg); }

.model-face {
  position: absolute; inset: 0;
  backface-visibility: hidden; -webkit-backface-visibility: hidden;
  overflow: hidden;
}
.model-face--back { transform: rotateY(180deg); }

.model-face__bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  transition: transform .6s;
}
.model-card:hover .model-face__bg { transform: scale(1.04); }

.model-face__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(7,7,26,.92) 0%, rgba(7,7,26,.5) 50%, rgba(7,7,26,.3) 100%);
}

.model-face__content {
  position: absolute; bottom: 0; left: 0; right: 0; padding: 36px;
}

.model-badge {
  display: inline-block; font-size: 9px; font-weight: 800;
  letter-spacing: 3px; text-transform: uppercase; padding: 5px 12px; margin-bottom: 12px;
}
.model-badge--hot  { background: rgba(201,168,76,.2); border: 1px solid var(--gold); color: var(--gold); }
.model-badge--calm { background: rgba(76,175,125,.2); border: 1px solid var(--green); color: var(--green); }

.model-face__content h3 {
  font-size: 22px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; color: #fff; margin-bottom: 10px; line-height: 1.3;
}
.model-face__content p { font-size: 13px; line-height: 1.7; color: rgba(245,240,232,.7); margin-bottom: 16px; }

.model-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.model-tags span {
  font-size: 10px; font-weight: 600; letter-spacing: 1px;
  border: 1px solid rgba(201,168,76,.4); color: var(--gold);
  padding: 4px 10px;
}

.model-income {
  border-top: 1px solid rgba(201,168,76,.25); padding-top: 16px;
  display: flex; flex-direction: column; gap: 4px;
}
.model-income small { font-size: 10px; letter-spacing: 2px; color: var(--muted); text-transform: uppercase; }
.model-income strong { font-size: 20px; font-weight: 700; color: var(--gold-lt); }

/* Cột so sánh */
.model-compare {
  display: flex; flex-direction: column; gap: 0; align-items: center;
}
.cmp-item {
  background: var(--navy-3); border: 1px solid rgba(201,168,76,.15);
  padding: 28px 32px; width: 100%; text-align: center;
  transition: border-color .3s;
}
.cmp-item:hover { border-color: rgba(201,168,76,.4); }
.cmp-item--highlight {
  background: linear-gradient(135deg, var(--navy-4) 0%, var(--navy-3) 100%);
  border-color: rgba(201,168,76,.4);
  box-shadow: 0 0 32px rgba(201,168,76,.1);
}
.cmp-icon {
  font-size: 11px; font-weight: 800; letter-spacing: 2px;
  color: var(--gold); margin-bottom: 10px;
  width: 44px; height: 44px; border-radius: 50%;
  border: 1px solid rgba(201,168,76,.4);
  display: flex; align-items: center; justify-content: center;
  margin-left: auto; margin-right: auto;
}
.cmp-item h4 {
  font-size: 14px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; color: var(--cream); margin-bottom: 8px;
}
.cmp-item p { font-size: 12px; line-height: 1.7; color: var(--muted); margin-bottom: 10px; }
.cmp-item strong { font-size: 11px; font-weight: 700; letter-spacing: 2px; color: var(--gold); text-transform: uppercase; }
.cmp-plus, .cmp-equals {
  font-size: 28px; font-weight: 300; color: var(--gold);
  padding: 8px 0; text-align: center;
}

/* ======================== SECTION 4: ROI CALCULATOR ======================== */

.roi-calc { padding: 120px 0; background: var(--navy); }

.roi-intro {
  text-align: center; font-size: 15px; font-weight: 300;
  line-height: 1.9; color: var(--muted); margin-bottom: 64px;
}
.roi-intro em { color: var(--gold); font-style: normal; }

.dashboard {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2px;
  border: 1px solid rgba(201,168,76,.2);
}

.dash-controls {
  background: var(--navy-3); padding: 48px 40px;
  display: flex; flex-direction: column; gap: 36px;
}
.dash-results {
  background: var(--navy-4); padding: 48px 40px;
  display: flex; flex-direction: column; gap: 0;
}

.dash-label-row {
  display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px;
}
.dash-label { font-size: 12px; font-weight: 600; letter-spacing: 1px; color: var(--cream); }
.dash-val {
  font-size: 18px; font-weight: 700; color: var(--gold);
  min-width: 120px; text-align: right;
}

.dash-slider {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 4px;
  background: rgba(201,168,76,.25); outline: none; border-radius: 2px; cursor: pointer;
}
.dash-slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--gold); cursor: pointer;
  box-shadow: 0 0 10px rgba(201,168,76,.5);
}
.dash-slider::-moz-range-thumb {
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--gold); cursor: pointer; border: none;
}
.dash-minmax {
  display: flex; justify-content: space-between;
  font-size: 10px; color: var(--muted); letter-spacing: 1px; margin-top: 8px;
}

.dash-benchmark {
  background: rgba(201,168,76,.06); border-left: 3px solid var(--gold);
  padding: 20px 20px;
}
.bench-title { font-size: 11px; font-weight: 700; letter-spacing: 2px; color: var(--gold); margin-bottom: 12px; text-transform: uppercase; }
.dash-benchmark ul { display: flex; flex-direction: column; gap: 8px; }
.dash-benchmark li { font-size: 12px; color: var(--muted); line-height: 1.6; }
.dash-benchmark strong { color: var(--cream); }

/* Results */
.result-item {
  padding: 22px 0; border-bottom: 1px solid rgba(201,168,76,.1);
  display: flex; flex-direction: column; gap: 6px;
}
.r-label { font-size: 10px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; color: var(--muted); }
.r-value { font-size: 22px; font-weight: 700; color: var(--green); letter-spacing: 1px; }

.result-divider { height: 1px; background: rgba(201,168,76,.3); margin: 8px 0; }
.result-item--total .r-label { color: var(--gold); }
.result-item--total .r-value { font-size: 16px; }
.r-value--big { font-size: 28px !important; color: var(--gold-lt) !important; }
.r-value--roi { font-size: 36px !important; color: var(--gold) !important; }
.result-item--roi { border-bottom: none; }
.result-note { font-size: 10px; color: var(--muted); line-height: 1.6; padding-top: 12px; }
.result-cta-btn { margin-top: auto; padding-top: 12px; display: block; text-align: center; }

/* ======================== SECTION 5: HỆ SINH THÁI ======================== */

.he-sinh-thai { padding: 120px 0 0; background: var(--navy-2); }

.hst-intro {
  text-align: center; font-size: 15px; font-weight: 300;
  line-height: 1.9; color: var(--muted); margin-bottom: 64px;
}
.hst-intro strong { color: var(--gold); }

/* Video */
.hst-video-wrap { margin-bottom: 80px; }
.hst-video-inner {
  position: relative; height: 580px; overflow: hidden;
}

/* Poster thumbnail */
.hst-video-poster {
  position: absolute; inset: 0;
  transition: opacity .4s;
}
.hst-video-poster.hidden { opacity: 0; pointer-events: none; }
.hst-thumb { transition: transform 8s ease; }
.hst-video-inner:hover .hst-thumb { transform: scale(1.04); }

.hst-video-overlay {
  position: absolute; inset: 0;
  background: rgba(7,7,26,.45);
  display: flex; align-items: center; justify-content: center;
  transition: background .3s;
}
.hst-video-inner:hover .hst-video-overlay { background: rgba(7,7,26,.35); }

.play-btn {
  display: flex; flex-direction: column; align-items: center; gap: 14px;
  background: none; border: none; cursor: pointer; color: var(--cream);
  font-family: var(--font); font-size: 11px; font-weight: 600;
  letter-spacing: 3px; text-transform: uppercase;
  transition: transform .3s;
}
.play-btn:hover { transform: scale(1.08); }
.play-btn svg { filter: drop-shadow(0 4px 16px rgba(201,168,76,.4)); }

/* HTML5 Video player */
.hst-video-player {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  display: block;
  object-fit: cover;
  background: #000;
  z-index: 2;
}
.hst-video-player.hst-hidden { display: none; }

/* ======================== HOTLINE BUTTON ======================== */

.hotline-wrap {
  position: fixed;
  bottom: 28px; right: 24px;
  z-index: 999;
  display: flex; flex-direction: column;
  align-items: flex-end; gap: 10px;
}

/* Nút chính */
.hotline-btn {
  display: flex; align-items: center; gap: 10px;
  background: linear-gradient(135deg, var(--gold-dk), var(--gold));
  color: var(--navy);
  border: none; cursor: pointer;
  padding: 14px 20px 14px 16px;
  border-radius: 56px;
  font-family: var(--font); font-size: 10px; font-weight: 800;
  letter-spacing: 2.5px; text-transform: uppercase;
  box-shadow: 0 6px 28px rgba(201,168,76,.55);
  transition: transform .25s, box-shadow .25s;
  position: relative; overflow: hidden;
}
.hotline-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 36px rgba(201,168,76,.7);
}
/* Hiệu ứng pulse vòng */
.hotline-btn::before {
  content: '';
  position: absolute; inset: -4px;
  border-radius: 56px;
  border: 2px solid rgba(201,168,76,.5);
  animation: hotlinePulse 2.2s ease-out infinite;
}
@keyframes hotlinePulse {
  0%   { transform: scale(1);   opacity: .8; }
  70%  { transform: scale(1.18); opacity: 0; }
  100% { transform: scale(1.18); opacity: 0; }
}

/* Icon phone / close toggle */
.hotline-btn__icon {
  display: flex; align-items: center; justify-content: center;
  transition: opacity .2s, transform .2s;
}
.hotline-btn__icon--close {
  position: absolute; left: 16px;
  opacity: 0; transform: rotate(-90deg);
}
.hotline-wrap.open .hotline-btn__icon--phone {
  opacity: 0; transform: rotate(90deg);
}
.hotline-wrap.open .hotline-btn__icon--close {
  opacity: 1; transform: rotate(0);
}
.hotline-wrap.open .hotline-btn__label { opacity: 0; width: 0; overflow: hidden; }

/* Options popup */
.hotline-options {
  display: flex; flex-direction: column;
  align-items: flex-end; gap: 8px;
  opacity: 0; pointer-events: none;
  transform: translateY(12px) scale(.95);
  transition: opacity .28s ease, transform .28s ease;
}
.hotline-wrap.open .hotline-options {
  opacity: 1; pointer-events: all;
  transform: translateY(0) scale(1);
}

.hotline-option {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 18px; border-radius: 40px;
  font-family: var(--font); font-size: 12px; font-weight: 700;
  letter-spacing: 1px; text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 4px 18px rgba(0,0,0,.4);
  transition: transform .2s, box-shadow .2s;
}
.hotline-option:hover { transform: translateX(-4px); box-shadow: 0 6px 24px rgba(0,0,0,.5); }

.hotline-option--zalo {
  background: #0068FF; color: #fff;
}
.hotline-option--phone {
  background: #25c26e; color: #fff;
}

/* Label nút chính */
.hotline-btn__label {
  transition: opacity .2s, width .2s;
  white-space: nowrap;
}

/* USP Grid */
.usp-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 2px;
  padding: 0 0 0;
}
.usp-item {
  background: var(--navy-3); padding: 40px 28px;
  border-top: 2px solid transparent;
  transition: border-color .3s, transform .3s;
}
.usp-item:hover { border-color: var(--gold); transform: translateY(-4px); }
.usp-num {
  font-size: 38px; font-weight: 800; color: rgba(201,168,76,.2);
  line-height: 1; margin-bottom: 16px; letter-spacing: -1px;
}
.usp-item h4 {
  font-size: 14px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; color: var(--cream); margin-bottom: 12px;
}
.usp-item p { font-size: 13px; line-height: 1.8; color: var(--muted); }

/* ======================== SECTION 6: CTA VIP ======================== */

.cta-vip { position: relative; padding: 120px 0; overflow: hidden; }

.cta-bg { position: absolute; inset: 0; }
.cta-bg img { object-position: center; }
.cta-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(7,7,26,.96) 0%, rgba(7,7,26,.88) 100%);
}

.cta-inner { position: relative; z-index: 2; max-width: 720px; }

.vip-badge {
  display: inline-block; font-size: 9px; font-weight: 800;
  letter-spacing: 4px; text-transform: uppercase;
  border: 1px solid var(--gold); color: var(--gold);
  padding: 6px 18px; margin-bottom: 28px;
}

.cta-title {
  font-size: clamp(32px, 5vw, 64px); font-weight: 900;
  letter-spacing: 3px; line-height: 1.1; text-transform: uppercase;
  color: #fff; margin-bottom: 20px;
  text-shadow: 0 4px 24px rgba(0,0,0,.4);
}

.cta-desc {
  font-size: 15px; font-weight: 300; line-height: 1.9;
  color: rgba(245,240,232,.7); margin-bottom: 48px;
}

/* Form VIP */
.vip-form { display: flex; flex-direction: column; gap: 16px; }
.vip-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.vip-input {
  width: 100%; background: rgba(20,20,51,.8);
  border: 1px solid rgba(201,168,76,.25); color: var(--cream);
  font-family: var(--font); font-size: 13px; font-weight: 400;
  padding: 18px 22px; outline: none;
  transition: border-color .3s, background .3s;
  -webkit-appearance: none;
}
.vip-input:focus { border-color: var(--gold); background: rgba(26,26,62,.9); }
.vip-input::placeholder { color: var(--muted); }
.vip-select { cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23C9A84C' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 18px center;
  padding-right: 44px;
}
.vip-select option { background: var(--navy-3); color: var(--cream); }

.vip-btn {
  width: 100%; padding: 20px;
  font-family: 'Montserrat', sans-serif;
  font-size: 12px; font-weight: 800;
  letter-spacing: 3px; text-transform: uppercase;
  cursor: pointer;
}
.vip-note { font-size: 11px; color: var(--muted); letter-spacing: 1px; text-align: center; }

/* Success state */
.vip-success {
  text-align: center; padding: 48px 0;
  animation: fadeUp .6s ease both;
}
.success-svg { margin: 0 auto 24px; animation: drawCircle .6s ease; }
.vip-success h3 {
  font-size: 24px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; color: var(--gold); margin-bottom: 16px;
}
.vip-success p { font-size: 14px; line-height: 1.9; color: var(--muted); }
.vip-success strong { color: var(--gold-lt); }
@keyframes fadeUp { from { opacity:0; transform:translateY(20px); } to { opacity:1; transform:translateY(0); } }

/* ======================== FOOTER ======================== */

.footer { background: #030310; padding: 60px 0 0; }
.footer-top {
  display: flex; flex-direction: column; align-items: center; gap: 20px;
  padding-bottom: 40px; border-bottom: 1px solid rgba(201,168,76,.12);
}
.footer-logo { height: 56px; width: auto; object-fit: contain; }
.footer-tagline {
  font-size: 12px; font-weight: 300; letter-spacing: 3px;
  text-transform: uppercase; color: var(--muted);
}
.footer-nav { display: flex; gap: 40px; }
.footer-nav a {
  font-size: 10px; font-weight: 600; letter-spacing: 3px;
  text-transform: uppercase; color: var(--muted); transition: color .3s;
}
.footer-nav a:hover { color: var(--gold); }
.footer-bottom {
  display: flex; justify-content: space-between; padding: 22px 0;
}
.footer-bottom p { font-size: 11px; color: rgba(155,142,126,.4); letter-spacing: 1px; }

/* ======================== GALLERY SECTION ======================== */

.gallery-section { padding: 120px 0 80px; background: var(--navy); }

/* Tabs */
.gallery-tabs {
  display: flex; align-items: center; justify-content: center;
  gap: 0; margin: 48px 0 0;
  border: 1px solid rgba(201,168,76,.2);
  width: fit-content; margin-left: auto; margin-right: auto;
}

.gallery-tab {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 36px;
  background: transparent; border: none; cursor: pointer;
  font-family: var(--font); font-size: 11px; font-weight: 700;
  letter-spacing: 3px; text-transform: uppercase;
  color: var(--muted);
  transition: color .3s, background .3s;
  position: relative;
}
.gallery-tab svg { transition: stroke .3s; stroke: var(--muted); }
.gallery-tab + .gallery-tab {
  border-left: 1px solid rgba(201,168,76,.2);
}
.gallery-tab:hover { color: var(--cream); }
.gallery-tab:hover svg { stroke: var(--cream); }
.gallery-tab.active {
  background: rgba(201,168,76,.1);
  color: var(--gold);
}
.gallery-tab.active svg { stroke: var(--gold); }
.gallery-tab.active::after {
  content: '';
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 2px; background: var(--gold);
}

/* Pane */
.gallery-pane { margin-top: 40px; }

/* Tab count badge */
.gallery-tab-count {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 28px; height: 18px; padding: 0 6px;
  border-radius: 9px;
  background: rgba(201,168,76,.15);
  border: 1px solid rgba(201,168,76,.3);
  font-size: 9px; font-weight: 700; letter-spacing: 1px;
  color: var(--muted);
  transition: color .3s, background .3s, border-color .3s;
}
.gallery-tab.active .gallery-tab-count {
  background: rgba(201,168,76,.25);
  border-color: var(--gold);
  color: var(--gold);
}

/* Grid — luôn 4 cột, 1 hàng */
.gallery-grid--4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3px;
}

/* Item */
.gallery-item {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  cursor: pointer;
  border: 1px solid rgba(201,168,76,.08);
  transition: border-color .3s;
}
.gallery-item:hover { border-color: rgba(201,168,76,.5); }
.gallery-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .55s cubic-bezier(.4,0,.2,1);
  display: block;
}
.gallery-item:hover img { transform: scale(1.08); }

/* Overlay — zoom icon (ảnh 1–3) */
.gallery-item__overlay {
  position: absolute; inset: 0;
  background: rgba(7,7,26,.0);
  display: flex; align-items: center; justify-content: center;
  transition: background .3s;
}
.gallery-item:hover .gallery-item__overlay {
  background: rgba(7,7,26,.45);
}
.gallery-zoom-icon {
  font-size: 28px; color: var(--gold);
  opacity: 0; transform: scale(.7);
  transition: opacity .3s, transform .3s;
}
.gallery-item:hover .gallery-zoom-icon {
  opacity: 1; transform: scale(1);
}

/* Overlay — count (ảnh thứ 4) */
.gallery-item__overlay--count {
  background: rgba(7,7,26,.6);
  flex-direction: column; gap: 6px;
}
.gallery-item:hover .gallery-item__overlay--count {
  background: rgba(7,7,26,.72);
}
.gallery-count-num {
  font-size: 28px; font-weight: 800;
  letter-spacing: 1px; color: var(--gold-lt);
  line-height: 1;
}
.gallery-count-label {
  font-size: 10px; font-weight: 700;
  letter-spacing: 3px; text-transform: uppercase;
  color: rgba(245,240,232,.75);
  opacity: 0; transform: translateY(6px);
  transition: opacity .3s, transform .3s;
}
.gallery-item--counter:hover .gallery-count-label {
  opacity: 1; transform: translateY(0);
}

/* ---- LIGHTBOX ---- */
.gallery-lightbox {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(5,5,18,.97);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity .35s ease;
}
.gallery-lightbox.open {
  opacity: 1; pointer-events: all;
}

.lb-stage {
  display: flex; align-items: center; justify-content: center;
  width: 100%; flex: 1;
  padding: 72px 100px 48px;
  box-sizing: border-box;
}
.lb-img {
  max-width: 100%; max-height: 100%;
  object-fit: contain;
  display: block;
  width: auto; height: auto;
  box-shadow: 0 16px 64px rgba(0,0,0,.8);
  border: 1px solid rgba(201,168,76,.2);
  transition: opacity .25s ease;
}
.lb-img.loading { opacity: 0; }

.lb-bar {
  padding: 12px 24px 24px;
  display: flex; align-items: center; justify-content: center;
}
.lb-counter {
  font-size: 11px; font-weight: 600; letter-spacing: 3px;
  text-transform: uppercase; color: var(--muted);
}

/* Close button */
.lb-close {
  position: absolute; top: 20px; right: 24px;
  background: rgba(201,168,76,.1); border: 1px solid rgba(201,168,76,.3);
  color: var(--gold); cursor: pointer;
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  transition: background .25s, transform .25s;
}
.lb-close:hover { background: rgba(201,168,76,.25); transform: rotate(90deg); }

/* Nav buttons */
.lb-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(201,168,76,.1); border: 1px solid rgba(201,168,76,.3);
  color: var(--gold); cursor: pointer;
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  transition: background .25s, transform .25s;
  z-index: 2;
}
.lb-nav:hover { background: rgba(201,168,76,.25); }
.lb-prev { left: 20px; }
.lb-prev:hover { transform: translateY(-50%) translateX(-3px); }
.lb-next { right: 20px; }
.lb-next:hover { transform: translateY(-50%) translateX(3px); }

/* ======================== SCROLL REVEAL ======================== */

.reveal { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ======================== RESPONSIVE ======================== */

@media (max-width: 1100px) {
  .container { padding: 0 32px; }
  .model-layout { grid-template-columns: 1fr; }
  .model-card { height: 420px; }
  .model-compare { flex-direction: row; flex-wrap: wrap; justify-content: center; }
  .cmp-plus, .cmp-equals { padding: 0 8px; display: flex; align-items: center; }
  .cmp-item { width: calc(33% - 32px); }
  .usp-grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard { grid-template-columns: 1fr; }
  .gallery-grid--4 { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .journey-stops { grid-template-columns: 1fr; }
  .flip-grid { grid-template-columns: 1fr 1fr; }
  .flip-card { height: 320px; }
  .vip-row { grid-template-columns: 1fr; }
  .gallery-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .gallery-tab { padding: 12px 20px; letter-spacing: 2px; }
  .lb-stage { padding: 72px 64px 48px; }
}

/* ======================== MOBILE HERO SLIDER ======================== */
@media (max-width: 768px) {

  /* Container slider */
  .hero {
    display: block;
    position: relative;
    height: 100vh; min-height: 600px;
    overflow: hidden;
  }

  /* Mỗi half = 1 slide fullscreen */
  .hero-half {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    transition: transform .5s cubic-bezier(.4,0,.2,1);
    flex: none;
  }
  .hero-half:hover { flex: none; }

  /* Overlay mỗi slide: gradient từ dưới lên cho đọc text */
  .hero-half__overlay--left,
  .hero-half__overlay--right {
    background: linear-gradient(
      to top,
      rgba(7,7,26,.92) 0%,
      rgba(7,7,26,.5)  45%,
      rgba(7,7,26,.1)  100%
    );
  }

  /* Label desktop ẩn đi */
  .hero-half__label { display: none; }

  /* Hiện slide content */
  .slide-content {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    position: absolute;
    inset: 0;
    padding: 0 28px 100px;
    z-index: 5;
  }

  .slide-tag {
    display: inline-block;
    font-size: 9px; font-weight: 800; letter-spacing: 4px;
    text-transform: uppercase; color: var(--gold);
    border-left: 2px solid var(--gold); padding-left: 10px;
    margin-bottom: 8px;
  }
  .slide-sub {
    font-size: 11px; font-weight: 400; letter-spacing: 1px;
    color: rgba(245,240,232,.65); margin-bottom: 18px;
  }
  .slide-title {
    font-size: clamp(28px, 8vw, 40px); font-weight: 900;
    letter-spacing: 1.5px; line-height: 1.2; text-transform: uppercase;
    color: #fff; margin-bottom: 14px;
    text-shadow: 0 2px 16px rgba(0,0,0,.7);
  }
  .slide-title span {
    color: var(--gold-lt); font-weight: 300; letter-spacing: 3px; display: block;
  }
  .slide-desc {
    font-size: 12px; font-weight: 300; line-height: 1.75;
    color: rgba(245,240,232,.75); margin-bottom: 24px; max-width: 320px;
  }
  .slide-btn {
    align-self: flex-start;
    font-size: 10px; padding: 13px 28px; letter-spacing: 3px;
  }

  /* Ẩn hero-center desktop */
  .hero-center { display: none; }

  /* Ẩn đường chia dọc */
  .hero-divider { display: none; }

  /* Hiện dots */
  .hero-dots {
    display: flex;
    position: absolute;
    bottom: 52px; left: 50%;
    transform: translateX(-50%);
    gap: 10px; z-index: 20;
  }
  .hero-dot {
    width: 28px; height: 3px;
    background: rgba(245,240,232,.35);
    border-radius: 2px;
    transition: background .35s, width .35s;
    cursor: pointer;
  }
  .hero-dot.active {
    background: var(--gold);
    width: 44px;
  }

  /* Hiện swipe hint */
  .swipe-hint {
    display: flex;
    align-items: center; gap: 8px;
    position: absolute;
    bottom: 24px; left: 50%;
    transform: translateX(-50%);
    font-size: 10px; font-weight: 600; letter-spacing: 2px;
    color: rgba(245,240,232,.45); z-index: 20;
    white-space: nowrap;
    animation: fadeHint 3s ease 1.5s forwards;
    opacity: 1;
  }
  .swipe-arrow { font-size: 12px; color: var(--gold); }
  @keyframes fadeHint {
    0%   { opacity: 1; }
    100% { opacity: 0; pointer-events: none; }
  }

  /* Hero scroll ẩn trên mobile */
  .hero-scroll { display: none; }
}

/* ======================== SMALL MOBILE ======================== */
@media (max-width: 640px) {
  .container { padding: 0 20px; }
  .flip-grid { grid-template-columns: 1fr; }
  .usp-grid { grid-template-columns: 1fr; }
  .vi-tri-sub { transform: none; margin-left: 0; }
  .footer-nav { flex-wrap: wrap; justify-content: center; gap: 20px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .model-card { height: 380px; }
  .cmp-item { width: 100%; }
  .gallery-grid--4 { grid-template-columns: repeat(2, 1fr); gap: 2px; }
  .gallery-tabs { width: 100%; }
  .gallery-tab { flex: 1; justify-content: center; padding: 12px 10px; font-size: 10px; }
  .lb-stage { padding: 68px 52px 40px; }
  .lb-nav { width: 40px; height: 40px; }
  .lb-prev { left: 8px; }
  .lb-next { right: 8px; }
}


/* ======================== INTRO VIDEO SECTION ======================== */
.intro-video-section {
  background: #0a0a0a;
  padding: 60px 0 60px;
}
.intro-video-wrap {
  margin-top: 36px;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}
.intro-video-player {
  width: 100%;
  display: block;
  border-radius: 10px;
  box-shadow: 0 6px 32px rgba(201,168,76,0.15);
  background: #000;
}
@media (max-width: 768px) {
  .intro-video-section { padding: 48px 0 48px; }
  .intro-video-wrap { max-width: 100%; }
}