/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #0d1b3e;
  --primary-dark: #060e20;
  --primary-light: #5ba8cf;
  --accent: #3d7ea6;
  --dark: #1a1a1a;
  --dark-2: #2c2c2c;
  --gray: #64748b;
  --light: #f5f8fc;
  --white: #ffffff;
  --radius: 16px;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.14);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Apple SD Gothic Neo', 'Malgun Gothic', 'Noto Sans KR', sans-serif;
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.25s ease;
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(13,27,62,0.35);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(13,27,62,0.45);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.5);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--white);
}
.btn.full-width { width: 100%; justify-content: center; }

/* Section common */
.section-tag {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 12px;
}
.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 800; margin-bottom: 16px; }
.section-desc { font-size: 17px; color: var(--gray); max-width: 520px; margin: 0 auto; }

/* ── Navbar ── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: linear-gradient(to bottom, rgba(0,0,0,0.45) 0%, transparent 100%);
  transition: background 0.3s, box-shadow 0.3s;
}
#navbar.scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}
.nav-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo-link { display: flex; align-items: center; }
.logo-img {
  height: 78px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: filter 0.3s;
}
#navbar.scrolled .logo-img { filter: none; }
.logo-img-footer { height: 56px; }

.nav-links { display: flex; gap: 36px; }
.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--white); }
#navbar.scrolled .nav-links a { color: var(--gray); }
#navbar.scrolled .nav-links a:hover { color: var(--primary); }

/* Language Switcher */
.lang-switcher {
  display: flex;
  gap: 4px;
  align-items: center;
  margin-left: 8px;
}
.lang-btn {
  background: none;
  border: 1px solid rgba(255,255,255,0.4);
  color: rgba(255,255,255,0.8);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.lang-btn:hover { background: rgba(255,255,255,0.15); color: #fff; }
.lang-btn.active { background: rgba(255,255,255,0.25); color: #fff; border-color: rgba(255,255,255,0.8); }
#navbar.scrolled .lang-btn { border-color: rgba(13,27,62,0.3); color: var(--gray); }
#navbar.scrolled .lang-btn:hover { background: var(--light); color: var(--primary); }
#navbar.scrolled .lang-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.mobile-lang { display: flex; gap: 6px; padding: 12px 24px; flex-wrap: wrap; }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--white);
  cursor: pointer;
}
#navbar.scrolled .menu-toggle { color: var(--dark); }

.mobile-menu {
  display: none;
  flex-direction: column;
  background: var(--white);
  padding: 16px 24px 24px;
  border-top: 1px solid #f1f5f9;
}
.mobile-menu.open { display: flex; }
.mobile-menu a { padding: 12px 0; font-size: 16px; color: var(--dark); border-bottom: 1px solid #f1f5f9; }

/* ── Hero ── */
.hero {
  min-height: 100vh;
  background: linear-gradient(160deg, #060e20 0%, #0d1b3e 50%, #1a3560 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
  text-align: center;
}
/* Hero Slideshow */
.hero-slideshow {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}
.hero-slide.active {
  opacity: 1;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 20, 50, 0.52);
  z-index: 1;
}
.hero-content { position: relative; z-index: 2; max-width: 760px; }
.hero-stats { position: relative; z-index: 2; }
.hero-tag {
  display: inline-block;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.25);
  color: #a8d4ec;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 8px 20px;
  border-radius: 50px;
  margin-bottom: 28px;
}
.hero h1 {
  font-size: clamp(28px, 4.5vw, 52px);
  font-weight: 900;
  color: var(--white);
  line-height: 1.3;
  margin-bottom: 24px;
  white-space: nowrap;
}
.hero h1 span { color: #a8d4ec; }
.hero-desc {
  font-size: 18px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 16px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.hero-tagline {
  font-size: 16px;
  font-style: italic;
  color: var(--primary-light);
  letter-spacing: 1px;
  margin-bottom: 36px;
}
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.hero-stats {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 48px;
  margin-top: 72px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.15);
  flex-wrap: wrap;
  justify-content: center;
}
.stat { text-align: center; }
.stat h3 { font-size: 38px; font-weight: 900; color: var(--white); line-height: 1; }
.stat h3 span { font-size: 22px; color: #a8d4ec; }
.stat p { font-size: 13px; color: rgba(255,255,255,0.6); margin-top: 6px; }

/* ── About ── */
.about { padding: 100px 0; }
.about .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-text .section-tag { display: block; }
.about-text h2 { font-size: clamp(26px, 3.5vw, 38px); font-weight: 800; margin-bottom: 20px; line-height: 1.35; }
.about-text > p { color: var(--gray); font-size: 16px; margin-bottom: 28px; line-height: 1.8; }
.about-list { margin-bottom: 36px; display: flex; flex-direction: column; gap: 14px; }
.about-list li { display: flex; align-items: flex-start; gap: 12px; font-size: 15px; font-weight: 500; }
.check { color: var(--primary); font-size: 18px; font-weight: 900; flex-shrink: 0; }

.about-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.visual-card {
  background: var(--light);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.25s, box-shadow 0.25s;
}
.visual-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.visual-card.main-card {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
}
.visual-card.main-card p { color: rgba(255,255,255,0.8); margin-top: 8px; }
.card-icon { font-size: 32px; margin-bottom: 12px; }
.visual-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.visual-card p { font-size: 14px; color: var(--gray); }

/* ── Services ── */
.services {
  padding: 100px 0;
  background: var(--light);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow);
  position: relative;
  transition: transform 0.25s, box-shadow 0.25s;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-card.featured { border: 2px solid var(--primary); }
.service-icon { font-size: 36px; margin-bottom: 20px; }
.service-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.service-card p { color: var(--gray); font-size: 14px; line-height: 1.75; }
.badge {
  position: absolute;
  top: 20px; right: 20px;
  background: var(--primary);
  color: var(--white);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 50px;
}

/* ── Destinations ── */
.destinations { padding: 100px 0; }
.dest-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: 240px 240px;
  gap: 16px;
}
.dest-card {
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.dest-card:first-child { grid-column: 1 / 2; grid-row: 1 / 3; }
.dest-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.1) 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
  transition: background 0.3s;
}
.dest-card:hover .dest-overlay { background: linear-gradient(to top, rgba(192,57,43,0.8) 0%, rgba(0,0,0,0.2) 70%); }
.dest-overlay h3 { font-size: 22px; font-weight: 800; color: var(--white); margin-bottom: 6px; }
.dest-overlay h3 span { font-size: 13px; font-weight: 400; color: rgba(255,255,255,0.7); margin-left: 8px; }
.dest-overlay p { font-size: 13px; color: rgba(255,255,255,0.8); }

/* destination backgrounds */
.dest-tokyo    { background-image: url('dest-tokyo.jpg');    background-size: cover; background-position: center; }
.dest-osaka    { background-image: url('dest-osaka.jpg');    background-size: cover; background-position: center; }
.dest-fukuoka  { background-image: url('dest-fukuoka.jpg');  background-size: cover; background-position: center; }
.dest-hokkaido { background-image: url('dest-hokkaido.jpg'); background-size: cover; background-position: center; }
.dest-tohoku   { background-image: url('dest-tohoku.jpg');   background-size: cover; background-position: center; }
.dest-more     { background: linear-gradient(135deg, #434343, #000000); }

/* emoji overlays for visual flair */
.dest-tokyo::before    { content: '🗼'; }
.dest-osaka::before    { content: '🏯'; }
.dest-fukuoka::before  { content: '🍜'; }
.dest-hokkaido::before { content: '❄️'; }
.dest-tohoku::before   { content: '♨️'; }
.dest-more::before     { content: '🗾'; }
.dest-card::before {
  position: absolute;
  top: 20px; right: 24px;
  font-size: 48px;
  opacity: 0.35;
  z-index: 0;
  transition: opacity 0.3s, transform 0.3s;
}
.dest-card:hover::before { opacity: 0.55; transform: scale(1.1); }

/* ── Team ── */
.team { padding: 100px 0; background: var(--light); }
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.team-card {
  text-align: center;
  padding: 36px 20px;
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
  transition: box-shadow 0.25s, transform 0.25s;
}
.team-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.team-avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  color: var(--white);
  margin: 0 auto 20px;
}
.team-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.team-card .role { font-size: 13px; color: var(--primary); font-weight: 600; margin-bottom: 10px; }
.team-card .bio { font-size: 13px; color: var(--gray); line-height: 1.6; }

.team-grid-single { display: flex; justify-content: center; }
.team-card-main { max-width: 320px; width: 100%; }
.team-card-main .team-avatar { width: 100px; height: 100px; font-size: 28px; }
.team-card-main h3 { font-size: 22px; }
.team-card-main .bio { font-size: 14px; }

/* ── Network Map ── */
.network-map-wrap {
  margin-top: 60px;
  padding: 40px 0 10px;
  border-top: 1px solid rgba(13,27,62,0.1);
}
.network-map {
  width: 100%;
  max-width: 700px;
  display: block;
  margin: 0 auto;
  border-radius: 16px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.10);
}

/* ── Contact ── */
.contact {
  padding: 100px 0;
  background: linear-gradient(160deg, #060e20 0%, #0d1b3e 50%, #1a3560 100%);
}
.contact .section-tag { color: #a8d4ec; }
.contact .section-header h2 { color: var(--white); }
.contact .section-desc { color: rgba(255,255,255,0.65); }
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
  align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 24px; }
.info-item { display: flex; align-items: flex-start; gap: 16px; }
.info-icon { font-size: 22px; flex-shrink: 0; margin-top: 2px; }
.info-item h4 { font-size: 13px; font-weight: 700; color: #a8d4ec; margin-bottom: 4px; letter-spacing: 1px; }
.info-item p { font-size: 15px; color: rgba(255,255,255,0.8); line-height: 1.7; }

.contact-form {
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; color: var(--dark); }
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e2e8f0;
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
  transition: border-color 0.2s;
  outline: none;
  color: var(--dark);
  background: var(--light);
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--primary); background: var(--white); }
.form-group textarea { resize: vertical; }

/* ── Footer ── */
footer {
  background: #060e20;
  color: rgba(255,255,255,0.6);
  padding: 64px 0 32px;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo { color: var(--white); display: inline-block; margin-bottom: 12px; }
.footer-brand p { font-size: 13px; line-height: 1.7; }
.footer-links h4 { color: var(--white); font-size: 14px; margin-bottom: 16px; font-weight: 700; }
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 13px; transition: color 0.2s; }
.footer-links a:hover { color: #a8d4ec; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-legal { display: flex; gap: 20px; }
.footer-legal a:hover { color: #a8d4ec; }

/* ── Responsive ── */
@media (max-width: 980px) {
  .about .container { grid-template-columns: 1fr; gap: 40px; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .dest-grid { grid-template-columns: repeat(2, 1fr); grid-template-rows: auto; }
  .dest-card:first-child { grid-column: auto; grid-row: auto; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-wrapper { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .menu-toggle { display: block; }
  .hero-stats { gap: 24px; }
  .services-grid { grid-template-columns: 1fr; }
  .dest-grid { grid-template-columns: 1fr; grid-template-rows: auto; }
  .form-row { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}