/* ── VARIABLES & RESET ── */
:root {
  --blue: #4B84BC;
  --blue-mid: #83B8DB;
  --blue-light: #B3E2FF;
  --white: #F3F7F8;
  --accent: #E2EA3D;
  --gold: #DBC683;
  --dark: #1a2a3a;
  --mid: #5a6a7a;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Noto Sans SC', sans-serif; color: var(--dark); background: var(--white); overflow-x: hidden; }

/* ── NAV ── */
nav {
  position: fixed; top: 0; width: 100%; z-index: 100;
  padding: 14px 64px;
  display: flex; justify-content: space-between; align-items: center;
  transition: background .4s, box-shadow .4s;
}
nav.scrolled { background: rgba(255,255,255,.96); backdrop-filter: blur(12px); box-shadow: 0 1px 24px rgba(0,0,0,.07); }
nav.nav-solid { background: rgba(255,255,255,.96); backdrop-filter: blur(12px); box-shadow: 0 1px 24px rgba(0,0,0,.07); }
.nav-logo { text-decoration: none; display: block; }
.nav-logo img { height: 52px; width: auto; filter: brightness(0) invert(1); transition: filter .3s; }
nav.scrolled .nav-logo img, nav.nav-solid .nav-logo img { filter: none; }
.nav-links { display: flex; gap: 36px; list-style: none; }
.nav-links a {
  text-decoration: none; color: rgba(255,255,255,.8);
  font-family: 'Bricolage Grotesque', sans-serif; font-size: 11px; letter-spacing: 1.5px; transition: color .3s;
}
nav.scrolled .nav-links a, nav.nav-solid .nav-links a { color: var(--mid); }
.nav-links a:hover { color: white; }
nav.scrolled .nav-links a:hover, nav.nav-solid .nav-links a:hover { color: var(--blue); }
.nav-links a.active { color: white; font-weight: 600; }
nav.scrolled .nav-links a.active, nav.nav-solid .nav-links a.active { color: var(--blue); }

/* ── FOOTER ── */
footer { background: var(--blue-mid); padding: 56px 64px; display: flex; justify-content: space-between; align-items: center; }
.footer-logo img { height: 60px; width: auto; filter: brightness(0) invert(1) opacity(.9); }
.footer-slogan { font-family: 'Bricolage Grotesque', sans-serif; font-size: 10px; letter-spacing: 4px; color: rgba(255,255,255,.6); margin-top: 8px; }
.footer-r { text-align: right; }
.footer-r p { font-family: 'Bricolage Grotesque', sans-serif; font-size: 12px; letter-spacing: 1px; color: rgba(255,255,255,.75); margin-bottom: 6px; }

/* ── TYPOGRAPHY ── */
.label { font-family: 'Bricolage Grotesque', sans-serif; font-size: 10px; letter-spacing: 4px; text-transform: uppercase; color: var(--blue); margin-bottom: 14px; display: block; }
.label-light { color: var(--blue-light); }
.h2 { font-family: 'Playfair Display', serif; font-size: 48px; font-weight: 400; line-height: 1.15; color: var(--dark); }
.h2-white { color: white; }

/* ── BUTTONS ── */
.btn-primary {
  background: white; color: var(--blue);
  padding: 14px 40px; font-family: 'Bricolage Grotesque', sans-serif; font-size: 12px; font-weight: 700; letter-spacing: 1.5px;
  text-decoration: none; display: inline-block; transition: opacity .3s;
}
.btn-primary:hover { opacity: .88; }
.btn-blue {
  background: var(--blue); color: white;
  padding: 14px 36px; font-family: 'Bricolage Grotesque', sans-serif; font-size: 12px; font-weight: 700; letter-spacing: 1.5px;
  text-decoration: none; display: inline-block; transition: background .3s;
}
.btn-blue:hover { background: #3a70a8; }
.btn-ghost {
  border: 1px solid rgba(255,255,255,.45); color: white;
  padding: 14px 36px; font-family: 'Bricolage Grotesque', sans-serif; font-size: 12px; font-weight: 600; letter-spacing: 1.5px;
  text-decoration: none; display: inline-block; transition: background .3s;
}
.btn-ghost:hover { background: rgba(255,255,255,.1); }
.btn-outline {
  border: 1px solid #d0dcea; color: var(--blue);
  padding: 12px 28px; font-family: 'Bricolage Grotesque', sans-serif; font-size: 11px; letter-spacing: 2px;
  background: none; cursor: pointer; text-decoration: none; display: inline-block; transition: all .25s;
}
.btn-outline:hover { background: var(--blue); border-color: var(--blue); color: white; }

/* ── ANIMATION ── */
.fade-up { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ── 3D CINEMA CAROUSEL ── */
.c-wrap {
  position: relative;
  padding: 20px 0 64px;
}
.c-stage {
  position: relative;
  height: 440px;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1400px;
  overflow: hidden;
}
.c-card {
  position: absolute;
  width: 290px;
  height: 390px;
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  transition: transform .55s cubic-bezier(.4,0,.2,1), filter .55s ease, opacity .55s ease, z-index 0s .27s;
  will-change: transform;
  user-select: none;
}
.c-card img { width: 100%; height: 100%; object-fit: cover; display: block; pointer-events: none; }
.c-card[data-pos="0"]  { transform: translateX(0) translateZ(0) rotateY(0deg); filter: brightness(1); z-index: 10; box-shadow: 0 28px 80px rgba(0,0,0,.38); }
.c-card[data-pos="-1"] { transform: translateX(-300px) translateZ(-130px) rotateY(40deg) scale(.83); filter: brightness(.65); z-index: 4; }
.c-card[data-pos="1"]  { transform: translateX(300px) translateZ(-130px) rotateY(-40deg) scale(.83); filter: brightness(.65); z-index: 4; }
.c-card[data-pos="-2"] { transform: translateX(-510px) translateZ(-280px) rotateY(55deg) scale(.66); filter: brightness(.38); z-index: 2; opacity: .7; }
.c-card[data-pos="2"]  { transform: translateX(510px) translateZ(-280px) rotateY(-55deg) scale(.66); filter: brightness(.38); z-index: 2; opacity: .7; }
.c-card[data-pos="-3"], .c-card[data-pos="3"] { opacity: 0; pointer-events: none; z-index: 0; }
.c-hint { position: absolute; top: 50%; font-size: 10px; letter-spacing: 2px; color: rgba(0,0,0,.25); font-family: 'Bricolage Grotesque', sans-serif; transform: translateY(-50%); pointer-events: none; }
.c-hint-l { left: 12px; }
.c-hint-r { right: 12px; }
.c-nav {
  position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 20px;
}
.c-btn {
  width: 36px; height: 36px; border-radius: 50%; border: 1px solid rgba(0,0,0,.15);
  background: none; cursor: pointer; font-size: 18px; color: var(--dark);
  display: flex; align-items: center; justify-content: center; transition: all .2s;
}
.c-btn:hover { background: var(--blue); border-color: var(--blue); color: white; }
.c-dots { display: flex; gap: 7px; align-items: center; }
.c-dot { width: 6px; height: 6px; border-radius: 50%; background: rgba(0,0,0,.18); cursor: pointer; transition: all .3s; }
.c-dot.active { background: var(--blue); transform: scale(1.4); }
/* Dark carousel variant (for dark bg sections) */
.c-wrap.dark .c-btn { border-color: rgba(255,255,255,.2); color: white; }
.c-wrap.dark .c-btn:hover { background: var(--blue); border-color: var(--blue); }
.c-wrap.dark .c-dot { background: rgba(255,255,255,.2); }
.c-wrap.dark .c-dot.active { background: var(--blue-light); }
.c-wrap.dark .c-hint { color: rgba(255,255,255,.2); }

/* ── LIGHTBOX ── */
#lightbox { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.93); z-index: 9999; align-items: center; justify-content: center; }
#lightbox.lb-active { display: flex; }
#lb-img { max-width: 88vw; max-height: 88vh; object-fit: contain; display: block; }
#lb-close { position: fixed; top: 24px; right: 32px; color: rgba(255,255,255,.6); font-size: 40px; cursor: pointer; background: none; border: none; line-height: 1; font-weight: 200; }
#lb-close:hover { color: white; }
#lb-prev, #lb-next { position: fixed; top: 50%; transform: translateY(-50%); color: rgba(255,255,255,.5); font-size: 48px; cursor: pointer; background: none; border: none; padding: 16px; line-height: 1; font-weight: 200; }
#lb-prev { left: 8px; }
#lb-next { right: 8px; }
#lb-prev:hover, #lb-next:hover { color: white; }
#lb-counter { position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%); color: rgba(255,255,255,.35); font-family: 'Bricolage Grotesque', sans-serif; font-size: 11px; letter-spacing: 3px; }

/* ── PILLARS ── */
.pillars { display: flex; gap: 48px; margin-top: 48px; }
.pillar-word { font-family: 'Bricolage Grotesque', sans-serif; font-size: 26px; font-weight: 800; color: var(--blue); }
.pillar-dot { color: var(--blue-mid); }
.pillar-cn { font-size: 12px; color: var(--mid); margin-top: 4px; letter-spacing: 1px; }

/* ── TRIP CARD ── */
.trip-card { display: grid; grid-template-columns: 1fr 1.2fr; box-shadow: 0 8px 40px rgba(0,0,0,.09); overflow: hidden; }
.trip-vis { min-height: 520px; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.trip-vis-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.trip-vis-overlay { position: absolute; inset: 0; background: rgba(20,50,90,.52); }
.trip-dest { text-align: center; color: white; position: relative; z-index: 2; padding: 40px; }
.trip-dest-tag { font-family: 'Bricolage Grotesque', sans-serif; font-size: 10px; letter-spacing: 5px; color: rgba(255,255,255,.6); margin-bottom: 20px; }
.trip-dest-cn { font-size: 54px; font-weight: 300; line-height: 1.2; margin-bottom: 16px; }
.trip-dest-en { font-family: 'Bricolage Grotesque', sans-serif; font-size: 13px; letter-spacing: 3px; color: rgba(255,255,255,.7); }
.trip-info { padding: 52px 52px 44px; display: flex; flex-direction: column; justify-content: space-between; background: var(--white); }
.trip-badge { display: inline-block; background: var(--blue-light); color: var(--blue); font-family: 'Bricolage Grotesque', sans-serif; font-size: 10px; letter-spacing: 2px; padding: 6px 14px; margin-bottom: 24px; }
.trip-title { font-family: 'Playfair Display', serif; font-size: 38px; line-height: 1.2; margin-bottom: 14px; color: var(--dark); }
.trip-desc { font-size: 14px; color: var(--mid); line-height: 1.9; margin-bottom: 28px; }
.dates { display: flex; gap: 10px; margin-bottom: 28px; flex-wrap: wrap; }
.date-chip { border: 1.5px solid #d0dcea; padding: 8px 18px; font-family: 'Bricolage Grotesque', sans-serif; font-size: 13px; font-weight: 700; color: var(--dark); }
.highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 36px; }
.hi { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--mid); }
.hi-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--blue); flex-shrink: 0; }
.trip-bottom { display: flex; align-items: center; justify-content: space-between; padding-top: 24px; border-top: 1px solid #e4ecf4; }
.price-label { font-family: 'Bricolage Grotesque', sans-serif; font-size: 10px; letter-spacing: 2px; color: var(--mid); margin-bottom: 4px; }
.price-amount { font-family: 'Bricolage Grotesque', sans-serif; font-size: 36px; font-weight: 800; color: var(--blue); }
.price-unit { font-size: 14px; font-weight: 400; color: var(--mid); }
.days { display: grid; grid-template-columns: repeat(5, 1fr); gap: 2px; margin-top: 2px; }
.day { background: white; padding: 24px 20px; border-top: 3px solid var(--blue-light); transition: border-color .3s; }
.day:hover { border-color: var(--blue); }
.day-n { font-family: 'Bricolage Grotesque', sans-serif; font-size: 10px; letter-spacing: 3px; color: var(--blue); margin-bottom: 12px; }
.day-t { font-size: 13px; font-weight: 600; color: var(--dark); margin-bottom: 8px; line-height: 1.4; }
.day-d { font-size: 12px; color: var(--mid); line-height: 1.8; }
.route-map img { width: 100%; display: block; }

/* ── PARTNERSHIP ── */
.partner-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; margin-top: 64px; }
.partner-types { display: flex; flex-direction: column; gap: 28px; }
.pt { padding: 28px; border-left: 3px solid var(--blue-light); background: white; transition: border-color .3s; }
.pt:hover { border-color: var(--blue); }
.pt h4 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.pt p { font-size: 13px; color: var(--mid); line-height: 1.8; }
.contact-box { background: white; padding: 48px; text-align: center; box-shadow: 0 4px 32px rgba(0,0,0,.06); }
.qr-wrap { width: 200px; height: 200px; margin: 0 auto 28px; overflow: hidden; }
.qr-wrap img { width: 100%; height: 100%; object-fit: contain; }
.contact-label { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.contact-sub { font-size: 12px; color: var(--mid); letter-spacing: 1px; }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  nav { padding: 14px 24px; }
  .nav-links { display: none; }
  footer { flex-direction: column; gap: 24px; padding: 48px 24px; }
  .footer-r { text-align: center; }
  .trip-card { grid-template-columns: 1fr; }
  .days { grid-template-columns: 1fr 1fr; }
  .partner-grid { grid-template-columns: 1fr; }
  .h2 { font-size: 36px; }
  .pillars { gap: 24px; }
  .trip-info { padding: 36px 28px; }
  .trip-title { font-size: 30px; }
  .c-stage { height: 360px; }
  .c-card { width: 220px; height: 300px; }
  .c-card[data-pos="-1"] { transform: translateX(-200px) translateZ(-100px) rotateY(40deg) scale(.83); }
  .c-card[data-pos="1"]  { transform: translateX(200px) translateZ(-100px) rotateY(-40deg) scale(.83); }
  .c-card[data-pos="-2"], .c-card[data-pos="2"] { opacity: 0; pointer-events: none; }
}