/* =====================================================================
   Great Wall Tours & Travel — cinematic adventure theme
   Hand-coded. No frameworks. Plain CSS.
   ===================================================================== */

/* ---------- Design tokens ---------- */
:root {
  --ink:        #061a31;   /* deep navy (logo darkest) */
  --ink-2:      #0a2645;   /* raised surface */
  --ink-3:      #0f3157;   /* cards */
  --snow:       #eef6fc;   /* cool white text */
  --mist:       #9db6cf;   /* muted sky-slate */
  --mist-dim:   #5c7691;   /* dim labels */
  --summit:     #1ea7e6;   /* bright azure accent (logo blue) */
  --summit-2:   #5cc6f2;   /* light sky blue */
  --glacier:    #7fd4ee;   /* pale glacier blue */
  --line:       rgba(238,246,252,.13);
  --line-soft:  rgba(238,246,252,.07);

  --font-display: "Big Shoulders Display", "Arial Narrow", sans-serif;
  --font-body:    "Hanken Grotesk", system-ui, sans-serif;
  --font-accent:  "Fraunces", Georgia, serif;

  --maxw: 1240px;
  --pad: clamp(20px, 5vw, 64px);
  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--ink);
  color: var(--snow);
  line-height: 1.6;
  font-size: 17px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }

/* subtle film grain overlay across the whole site */
body::after {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Layout helpers ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-inline: var(--pad); }
.section { padding-block: clamp(72px, 11vw, 160px); position: relative; }
.section--tight { padding-block: clamp(48px, 7vw, 96px); }

.eyebrow {
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--summit);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: .7em;
}
.eyebrow::before {
  content: ""; width: 34px; height: 1px; background: var(--summit); opacity: .8;
}

h1, h2, h3 { font-family: var(--font-display); font-weight: 800; line-height: .92; letter-spacing: -.01em; text-transform: uppercase; }
.h-xl { font-size: clamp(2.6rem, 7vw, 5.4rem); }
.h-lg { font-size: clamp(2.4rem, 6.5vw, 5rem); }
.h-md { font-size: clamp(1.8rem, 3.6vw, 3rem); }
.lead { font-family: var(--font-accent); font-size: clamp(1.1rem, 1.9vw, 1.5rem); font-weight: 400; color: var(--mist); line-height: 1.5; font-style: italic; }
.muted { color: var(--mist); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .6em;
  padding: 1.05em 1.8em;
  font-family: var(--font-body); font-weight: 700;
  font-size: .82rem; letter-spacing: .14em; text-transform: uppercase;
  border-radius: 2px;
  transition: transform .35s var(--ease), background .35s var(--ease), color .35s var(--ease);
  position: relative; overflow: hidden;
}
.btn .arrow { transition: transform .35s var(--ease); }
.btn:hover .arrow { transform: translateX(5px); }
.btn--gold { background: var(--summit); color: #042440; }
.btn--gold:hover { background: var(--summit-2); transform: translateY(-2px); }
.btn--ghost { border: 1px solid var(--line); color: var(--snow); }
.btn--ghost:hover { border-color: var(--summit); color: var(--summit); }

/* ---------- Header / nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px var(--pad);
  transition: background .4s var(--ease), padding .4s var(--ease), border-color .4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(6,26,49,.86);
  backdrop-filter: blur(14px);
  padding-block: 14px;
  border-bottom: 1px solid var(--line-soft);
}
.brand { display: flex; align-items: center; gap: 12px; font-family: var(--font-display); font-weight: 800; font-size: 1.35rem; text-transform: uppercase; letter-spacing: .02em; line-height: 1; }
.brand .mark { width: 92px; height: 92px; flex: none; object-fit: contain; filter: drop-shadow(0 2px 10px rgba(30,167,230,.4)); transition: transform .35s var(--ease), width .35s var(--ease), height .35s var(--ease); }
.brand:hover .mark { transform: scale(1.06); }
.brand .wordmark { display: flex; flex-direction: column; line-height: .92; }
.nav.scrolled .brand .mark { width: 64px; height: 64px; }
.brand small { display: block; font-family: var(--font-body); font-size: .56rem; letter-spacing: .34em; color: var(--snow); font-weight: 700; margin-top: 3px; }
.nav-links { display: flex; align-items: center; gap: clamp(18px, 2.4vw, 38px); }
.nav-links a {
  font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; font-weight: 600;
  color: var(--snow); position: relative; padding: 4px 0; opacity: .85;
  transition: opacity .25s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -2px; height: 1.5px; width: 0;
  background: var(--summit); transition: width .3s var(--ease);
}
.nav-links a:hover, .nav-links a.active { opacity: 1; }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links .btn { padding: .8em 1.3em; }

.burger { display: none; width: 42px; height: 42px; flex-direction: column; justify-content: center; gap: 6px; align-items: flex-end; }
.burger span { display: block; height: 2px; width: 26px; background: var(--snow); transition: transform .3s var(--ease), opacity .3s; }
.burger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); width: 26px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100svh; display: flex; align-items: flex-end;
  padding-bottom: clamp(48px, 9vh, 120px);
  isolation: isolate;
}
.hero__bg {
  position: absolute; inset: 0; z-index: -2;
  background:
    radial-gradient(120% 90% at 70% 10%, rgba(30,167,230,.20), transparent 55%),
    linear-gradient(180deg, rgba(6,26,49,.35) 0%, rgba(6,26,49,.55) 45%, rgba(6,26,49,.96) 100%),
    linear-gradient(160deg, #103157, #061a31 70%);
  background-size: cover; background-position: center;
}
.hero__bg.has-photo { background-blend-mode: normal; }
/* ridge silhouette at the base of the hero */
.hero__ridge { position: absolute; left: 0; right: 0; bottom: -1px; z-index: -1; width: 100%; height: 26vh; min-height: 140px; }
.hero__ridge path { fill: var(--ink); }

.hero__inner { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-inline: var(--pad); }
.hero h1 { max-width: 14ch; }
.hero h1 .accent { color: var(--summit); }
.hero .lead { max-width: 42ch; margin-top: 1.4rem; }
.hero__cta { margin-top: 2.4rem; display: flex; flex-wrap: wrap; gap: 14px; }

.scroll-cue { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); z-index: 2; font-size: .62rem; letter-spacing: .3em; text-transform: uppercase; color: var(--mist); display: flex; flex-direction: column; align-items: center; gap: 10px; }
.scroll-cue .line { width: 1px; height: 46px; background: linear-gradient(var(--summit), transparent); animation: drop 2s var(--ease) 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; } }

/* ---------- Marquee stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stat { padding: clamp(28px,4vw,52px) clamp(16px,2.5vw,40px); border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat .num { font-family: var(--font-display); font-size: clamp(2.6rem,5vw,4.4rem); font-weight: 800; color: var(--summit); line-height: 1; }
.stat .lbl { font-size: .76rem; letter-spacing: .14em; text-transform: uppercase; color: var(--mist); margin-top: 10px; }

/* ---------- Section heading block ---------- */
.head { display: grid; grid-template-columns: 1.1fr .9fr; gap: 32px; align-items: end; margin-bottom: clamp(36px, 5vw, 64px); }
.head .lead { margin-top: 0; }

/* ---------- Destination / package cards ---------- */
.grid { display: grid; gap: 22px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  position: relative; overflow: hidden; border-radius: 4px;
  background: var(--ink-3); border: 1px solid var(--line-soft);
  min-height: 420px; display: flex; flex-direction: column; justify-content: flex-end;
  isolation: isolate;
}
.card__media { position: absolute; inset: 0; z-index: -2; background-size: cover; background-position: center; transition: transform 1s var(--ease); background-color: #103157; }
.card:hover .card__media { transform: scale(1.06); }
.card::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, transparent 30%, rgba(6,26,49,.55) 62%, rgba(6,26,49,.95) 100%); }
.card__body { padding: 26px; }
.card__tag { font-size: .68rem; letter-spacing: .2em; text-transform: uppercase; color: var(--summit); font-weight: 700; }
.card h3 { font-size: 1.9rem; margin-top: 8px; }
.card p { color: var(--mist); font-size: .92rem; margin-top: 8px; max-width: 32ch; }
.card__meta { display: flex; gap: 18px; margin-top: 16px; font-size: .78rem; color: var(--mist); border-top: 1px solid var(--line); padding-top: 14px; }
.card__meta b { color: var(--snow); font-weight: 600; }
.card--tall { min-height: 520px; }
.card--sm { min-height: 280px; }
.card--sm h3 { font-size: 1.45rem; }
.card--sm .card__body { padding: 20px; }

/* package list row variant */
.pkg {
  display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center;
  padding: 30px 0; border-bottom: 1px solid var(--line);
  transition: padding-left .4s var(--ease);
}
.pkg:hover { padding-left: 14px; }
.pkg__main { display: flex; gap: 26px; align-items: center; }
.pkg__idx { font-family: var(--font-display); font-size: 1.4rem; color: var(--mist-dim); font-weight: 700; }
.pkg h3 { font-size: clamp(1.4rem, 2.6vw, 2.2rem); }
.pkg .sub { color: var(--mist); font-size: .88rem; margin-top: 4px; display: flex; gap: 16px; flex-wrap: wrap; }
.pkg__price { text-align: right; }
.pkg__price .amt { font-family: var(--font-display); font-size: 1.8rem; color: var(--summit); font-weight: 800; }
.pkg__price .from { font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; color: var(--mist); }

/* ---------- Feature split ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px,5vw,72px); align-items: center; }
.split__media { position: relative; aspect-ratio: 4/5; border-radius: 4px; overflow: hidden; background: #103157; }
.split__media .ph { position: absolute; inset: 0; background-size: cover; background-position: center; }
.split__media::after { content: ""; position: absolute; inset: 0; box-shadow: inset 0 0 120px rgba(6,26,49,.6); }
.feature-list { margin-top: 28px; display: grid; gap: 2px; }
.feature-list li { display: flex; gap: 16px; padding: 18px 0; border-top: 1px solid var(--line); }
.feature-list .ico { color: var(--summit); font-family: var(--font-display); font-weight: 800; font-size: 1.1rem; flex: none; width: 28px; }
.feature-list h4 { font-family: var(--font-body); font-size: 1rem; font-weight: 700; letter-spacing: .01em; }
.feature-list p { color: var(--mist); font-size: .9rem; margin-top: 2px; }

/* ---------- Quote / testimonial ---------- */
.quote { max-width: 60ch; margin: 0 auto; text-align: center; }
.quote blockquote { font-family: var(--font-accent); font-style: italic; font-size: clamp(1.4rem, 3.2vw, 2.4rem); line-height: 1.35; }
.quote .by { margin-top: 24px; font-size: .8rem; letter-spacing: .16em; text-transform: uppercase; color: var(--summit); }
.stars { color: var(--summit); letter-spacing: 4px; margin-bottom: 18px; }

/* ---------- Team ---------- */
.team-card { text-align: left; }
.team-card .ph { aspect-ratio: 3/4; border-radius: 4px; overflow: hidden; background: #103157 center/cover; position: relative; filter: grayscale(.4); transition: filter .5s var(--ease); }
.team-card:hover .ph { filter: grayscale(0); }
.team-card h3 { font-size: 1.5rem; margin-top: 16px; }
.team-card .role { color: var(--summit); font-size: .76rem; letter-spacing: .14em; text-transform: uppercase; margin-top: 4px; }
.team-card p { color: var(--mist); font-size: .9rem; margin-top: 8px; }

/* ---------- CTA band ---------- */
.cta-band { position: relative; text-align: center; overflow: hidden; isolation: isolate; }
.cta-band__bg { position: absolute; inset: 0; z-index: -2; background: linear-gradient(160deg,#103157,#061a31) center/cover; }
.cta-band::before { content: ""; position: absolute; inset: 0; z-index: -1; background: radial-gradient(80% 120% at 50% 0%, rgba(30,167,230,.22), transparent 60%); }
.cta-band h2 { max-width: 18ch; margin: 0 auto; }
.cta-band .lead { margin: 1.2rem auto 2rem; max-width: 46ch; }

/* ---------- Page banner (interior pages) ---------- */
.banner { position: relative; min-height: 60vh; display: flex; align-items: flex-end; padding-bottom: clamp(40px,7vh,90px); isolation: isolate; }
.banner__bg { position: absolute; inset: 0; z-index: -2; background:
    linear-gradient(180deg, rgba(6,26,49,.5), rgba(6,26,49,.92)),
    linear-gradient(160deg,#103157,#061a31) center/cover; background-size: cover; background-position: center; }
.banner .crumb { font-size: .74rem; letter-spacing: .2em; text-transform: uppercase; color: var(--mist); margin-bottom: 14px; }
.banner .crumb a:hover { color: var(--summit); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px,5vw,64px); }
.field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.field label { font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--mist); font-weight: 600; }
.field input, .field select, .field textarea {
  background: var(--ink-2); border: 1px solid var(--line); border-radius: 3px;
  padding: 14px 16px; color: var(--snow); font: inherit; font-size: .95rem;
  transition: border-color .25s;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--summit); }
.field textarea { resize: vertical; min-height: 130px; }
.contact-info li { display: flex; gap: 16px; padding: 22px 0; border-top: 1px solid var(--line); }
.contact-info .ico { color: var(--summit); font-weight: 800; font-family: var(--font-display); font-size: 1.2rem; width: 30px; flex: none; }
.contact-info b { display: block; font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--mist); font-weight: 600; margin-bottom: 4px; }
.form-note { font-size: .8rem; color: var(--mist); margin-top: 8px; }
.form-note.ok { color: var(--glacier); }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); padding-block: clamp(48px,7vw,84px) 30px; }
.footer__top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.footer h5 { font-family: var(--font-body); font-size: .76rem; letter-spacing: .16em; text-transform: uppercase; color: var(--summit); margin-bottom: 18px; font-weight: 700; }
.footer .col p, .footer .col a { color: var(--mist); font-size: .92rem; display: block; padding: 5px 0; }
.footer .col a:hover { color: var(--snow); }
.footer .blurb { color: var(--mist); font-size: .92rem; margin-top: 14px; max-width: 34ch; }
.footer__bottom { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: clamp(40px,6vw,72px); padding-top: 26px; border-top: 1px solid var(--line); font-size: .8rem; color: var(--mist-dim); }
.socials { display: flex; gap: 10px; }
.socials a { width: 38px; height: 38px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; font-size: .72rem; letter-spacing: .04em; transition: all .3s var(--ease); }
.socials a:hover { background: var(--summit); color: #1a1206; border-color: var(--summit); }

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
.reveal[data-delay="4"] { transition-delay: .32s; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .footer__top { grid-template-columns: 1fr 1fr; gap: 28px; }
  .head { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  /* keep the logo + burger above the full-screen menu */
  .brand { position: relative; z-index: 1002; }
  .brand .mark { width: 54px; height: 54px; }
  .nav.scrolled .brand .mark { width: 46px; height: 46px; }
  /* full-screen solid overlay menu — no see-through while scrolled */
  .nav-links {
    position: fixed; inset: 0; width: 100vw; height: 100dvh;
    background: var(--ink); flex-direction: column; align-items: center;
    justify-content: center; gap: 24px; padding: 96px var(--pad) 48px;
    transform: translateX(100%); transition: transform .4s var(--ease);
    z-index: 1000; overflow-y: auto; -webkit-overflow-scrolling: touch;
  }
  .nav-links.open { transform: none; }
  .nav-links a { font-size: 1.3rem; opacity: 1; }
  .nav-links .btn { margin-top: 8px; }
  .burger { display: flex; z-index: 1002; }
  .scroll-cue { display: none; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--line); }
  .grid--3, .grid--2 { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .pkg { grid-template-columns: 1fr; gap: 12px; }
  .pkg__price { text-align: left; }
  .footer__top { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}