:root {
  --bg: #eef2f6;
  --bg-deep: #081321;
  --surface: rgba(255, 255, 255, 0.94);
  --surface-strong: #ffffff;
  --line: rgba(40, 61, 85, 0.12);
  --line-strong: rgba(40, 61, 85, 0.2);
  --ink: #13263b;
  --muted: #61748a;
  --navy: #0d1b2d;
  --teal: #0f6d6b;
  --gold: #c8a25f;
  --gold-deep: #a68044;
  --danger: #b84c38;
  --shadow-lg: 0 24px 60px rgba(8, 20, 38, 0.12);
  --shadow-md: 0 16px 36px rgba(8, 20, 38, 0.1);
  --radius-xl: 32px;
  --radius-lg: 22px;
  --radius-md: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  color: var(--ink);
  font-family: "Manrope", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at left top, rgba(200, 162, 95, 0.18), transparent 28%),
    radial-gradient(circle at right top, rgba(15, 109, 107, 0.16), transparent 24%),
    linear-gradient(180deg, #eef2f6 0%, #f6f8fb 28%, #eef3f8 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.28) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.28) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.22), transparent 90%);
}

.booking-page {
  width: min(1240px, calc(100% - 32px));
  margin: 24px auto 56px;
  position: relative;
  z-index: 1;
}

.booking-hero {
  position: relative;
  overflow: hidden;
  min-height: 320px;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow-lg);
  background:
    linear-gradient(115deg, rgba(6, 15, 28, 0.94), rgba(8, 22, 39, 0.82) 46%, rgba(9, 32, 54, 0.54) 100%),
    url("../images/korea/booking-hero.jpg") center/cover no-repeat;
}

.booking-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 84% 18%, rgba(200, 162, 95, 0.28), transparent 20%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: auto, 120px 100%;
  opacity: 0.32;
}

.hero-mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(4, 11, 21, 0.22), rgba(4, 11, 21, 0.12));
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
  padding: 32px 36px 42px;
  color: #f6f8fb;
}

.back-link,
.hero-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  text-decoration: none;
}

.back-link {
  min-height: 40px;
  padding: 0 16px;
  color: #f6f8fb;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  font-size: 0.9rem;
  font-weight: 700;
}

.hero-badge {
  margin-top: 18px;
  min-height: 38px;
  padding: 0 16px;
  color: #ecd8aa;
  border: 1px solid rgba(200, 162, 95, 0.28);
  background: rgba(200, 162, 95, 0.08);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.booking-hero h1 {
  margin: 16px 0 0;
  color: #ffffff;
  font-family: "Noto Serif SC", serif;
  font-size: clamp(2.1rem, 4vw, 3.6rem);
  line-height: 1.08;
}

.booking-hero p {
  margin: 14px 0 0;
  max-width: 660px;
  color: rgba(240, 244, 250, 0.92);
  line-height: 1.8;
  font-size: 1rem;
}

.booking-shell {
  margin-top: 22px;
  padding: 32px;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.72);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(247, 250, 253, 0.94));
  box-shadow: var(--shadow-lg);
}

.booking-shell::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at top right, rgba(200, 162, 95, 0.14), transparent 22%),
    radial-gradient(circle at bottom left, rgba(15, 109, 107, 0.12), transparent 20%);
}

.booking-form {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 24px;
}

.section-head {
  padding: 24px 24px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(11, 27, 45, 0.97), rgba(13, 39, 66, 0.9));
  color: #f8fafc;
  box-shadow: var(--shadow-md);
}

.section-head h2 {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: clamp(1.2rem, 2vw, 1.7rem);
}

.section-head p {
  margin: 10px 0 0;
  color: rgba(235, 241, 248, 0.82);
}

.head-icon {
  width: 40px;
  height: 40px;
  display: inline-grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(200, 162, 95, 0.32), rgba(200, 162, 95, 0.12));
  font-size: 1.1rem;
}

.field-grid {
  display: grid;
  gap: 18px;
}

.field-grid.two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field {
  display: grid;
  gap: 10px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}

.field > span {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--ink);
}

.full-row {
  grid-column: 1 / -1;
}

input,
select,
textarea,
button {
  font: inherit;
}

input[type="text"],
input[type="tel"],
input[type="date"],
input[type="datetime-local"],
input[type="password"],
input[type="file"],
select,
textarea {
  width: 100%;
  min-height: 52px;
  padding: 12px 14px;
  border: 1px solid rgba(21, 42, 64, 0.12);
  border-radius: 14px;
  background: rgba(247, 250, 252, 0.9);
  color: var(--ink);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: rgba(15, 109, 107, 0.58);
  box-shadow: 0 0 0 4px rgba(15, 109, 107, 0.12);
  background: #ffffff;
}

input[readonly] {
  color: #466079;
  background: rgba(235, 241, 247, 0.96);
}

input[type="file"] {
  padding: 12px;
  background: rgba(243, 247, 251, 0.98);
}

small {
  color: var(--muted);
  line-height: 1.65;
}

.warn {
  color: var(--danger);
}

.option-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.option-row label {
  flex: 1 1 220px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 52px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(248, 250, 252, 0.94);
  font-weight: 700;
}

.option-row input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--teal);
}

.picker-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}

.picker-btn,
#submitButton {
  min-height: 52px;
  border: 0;
  border-radius: 14px;
  cursor: pointer;
  font-weight: 800;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.picker-btn:hover,
#submitButton:hover {
  transform: translateY(-1px);
}

.picker-btn {
  min-width: 112px;
  padding: 0 16px;
  color: #f7fafc;
  background: linear-gradient(135deg, #123352, #0f6d6b);
}

.ticket-section-heading {
  grid-column: 1 / -1;
  margin-bottom: -2px;
  padding: 0 4px;
  color: var(--navy);
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 0.04em;
}

.submit-row {
  display: grid;
  gap: 14px;
  padding: 26px 28px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(200, 162, 95, 0.22);
  background: linear-gradient(135deg, rgba(11, 27, 45, 0.96), rgba(14, 47, 74, 0.9));
  color: #f6f8fb;
  box-shadow: var(--shadow-md);
}

#submitButton {
  min-width: 220px;
  justify-self: start;
  padding: 0 28px;
  color: #081321;
  background: linear-gradient(135deg, #ead4a2, #c8a25f);
  box-shadow: 0 18px 32px rgba(200, 162, 95, 0.24);
}

#submitHint {
  margin: 0;
  color: rgba(236, 242, 248, 0.86);
  line-height: 1.75;
}

.result-box {
  padding: 18px 20px;
  border-radius: 16px;
  border: 1px solid rgba(15, 109, 107, 0.16);
  background: rgba(15, 109, 107, 0.08);
  color: var(--ink);
  line-height: 1.7;
}

.result-box.error {
  border-color: rgba(184, 76, 56, 0.22);
  background: rgba(184, 76, 56, 0.08);
  color: #8a3426;
}

.is-hidden {
  display: none !important;
}

@media (max-width: 900px) {
  .booking-page {
    width: min(100%, calc(100% - 20px));
    margin: 12px auto 32px;
  }

  .hero-content,
  .booking-shell {
    padding: 22px;
  }

  .field-grid.two-col,
  .picker-wrap {
    grid-template-columns: 1fr;
  }

  .option-row label {
    flex-basis: 100%;
  }

  #submitButton {
    width: 100%;
    justify-self: stretch;
  }
}

/* 2026-06 executive booking refresh */
body {
  font-family: "Plus Jakarta Sans", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 10% 10%, rgba(200, 162, 95, 0.14), transparent 22%),
    radial-gradient(circle at 88% 14%, rgba(15, 109, 107, 0.1), transparent 18%),
    linear-gradient(180deg, #eef2f6 0%, #f5f8fb 42%, #edf2f7 100%);
}

body::before {
  opacity: 0.55;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.42) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.42) 1px, transparent 1px),
    radial-gradient(circle at 18% 22%, rgba(200, 162, 95, 0.08), transparent 18%),
    radial-gradient(circle at 84% 12%, rgba(15, 109, 107, 0.06), transparent 16%);
  background-size: 82px 82px, 82px 82px, auto, auto;
}

.booking-page {
  width: min(1280px, calc(100% - 34px));
}

.booking-hero {
  min-height: 360px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background:
    linear-gradient(115deg, rgba(4, 13, 24, 0.94), rgba(7, 22, 40, 0.84) 44%, rgba(8, 34, 54, 0.52) 100%),
    url("../images/korea/booking-hero.jpg") center/cover no-repeat;
}

.booking-hero::after {
  opacity: 0.5;
  background:
    radial-gradient(circle at 86% 18%, rgba(200, 162, 95, 0.24), transparent 18%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: auto, 120px 100%, 100% 92px;
}

.booking-hero h1,
.section-head h2 {
  font-family: "Plus Jakarta Sans", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: -0.03em;
}

.hero-content {
  max-width: 860px;
  padding: 38px 42px 50px;
}

.hero-badge {
  border-radius: 999px;
}

.booking-shell {
  overflow: visible;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(246, 250, 253, 0.94)),
    linear-gradient(90deg, rgba(15, 109, 107, 0.04), rgba(200, 162, 95, 0.05));
}

.booking-shell::before {
  background:
    radial-gradient(circle at top right, rgba(200, 162, 95, 0.16), transparent 20%),
    radial-gradient(circle at bottom left, rgba(15, 109, 107, 0.12), transparent 18%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.28) 1px, transparent 1px);
  background-size: auto, auto, 96px 100%;
}

.booking-quick-tips {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: -62px 0 24px;
  position: relative;
  z-index: 3;
}

.booking-tip-card {
  padding: 20px 20px 18px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(244, 248, 252, 0.95)),
    linear-gradient(90deg, rgba(15, 109, 107, 0.06), rgba(200, 162, 95, 0.06));
  box-shadow: 0 18px 42px rgba(8, 20, 38, 0.12);
}

.booking-tip-card strong {
  display: block;
  margin-bottom: 10px;
  color: #13263b;
  font-size: 0.98rem;
  font-weight: 800;
}

.booking-tip-card span {
  display: block;
  color: #607488;
  line-height: 1.8;
}

.section-head {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(7, 21, 37, 0.98), rgba(10, 38, 62, 0.9)),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: auto, 120px 100%;
}

.section-head::after {
  content: "";
  position: absolute;
  right: -30px;
  top: -30px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 162, 95, 0.18), transparent 64%);
}

.field {
  position: relative;
  overflow: hidden;
  border-color: rgba(18, 53, 76, 0.08);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(245, 248, 252, 0.94));
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.field::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 3px;
  background: linear-gradient(90deg, rgba(15, 109, 107, 0.9), rgba(200, 162, 95, 0.9));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}

.field:hover,
.field:focus-within {
  transform: translateY(-3px);
  border-color: rgba(15, 109, 107, 0.18);
  box-shadow: 0 22px 42px rgba(8, 20, 38, 0.11);
}

.field:hover::after,
.field:focus-within::after {
  transform: scaleX(1);
}

.option-row label {
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.option-row label:hover,
.option-row label:has(input:checked) {
  transform: translateY(-2px);
  border-color: rgba(15, 109, 107, 0.24);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 14px 28px rgba(8, 20, 38, 0.08);
}

.ticket-section-heading {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(13, 109, 107, 0.08);
  color: #114d54;
}

.submit-row {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(7, 21, 37, 0.98), rgba(11, 43, 69, 0.92)),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: auto, 120px 100%;
}

.submit-row::after {
  content: "";
  position: absolute;
  right: -44px;
  top: -50px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 162, 95, 0.2), transparent 66%);
}

#submitButton {
  position: relative;
  z-index: 1;
}

#submitHint {
  position: relative;
  z-index: 1;
}

@media (max-width: 900px) {
  .booking-page {
    width: min(100%, calc(100% - 20px));
  }

  .hero-content {
    padding: 24px 24px 30px;
  }

  .booking-quick-tips {
    grid-template-columns: 1fr;
    margin-top: -28px;
  }
}

/* 2026-06 booking premium business refresh */
.booking-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.42fr);
  align-items: end;
  gap: 18px;
  background:
    linear-gradient(115deg, rgba(4, 13, 24, 0.94), rgba(7, 22, 40, 0.82) 44%, rgba(8, 34, 54, 0.52) 100%),
    url("../images/business/seoul-skyline-day.jpg") center/cover no-repeat;
}

.hero-content {
  max-width: 820px;
}

.booking-hero-side {
  position: relative;
  z-index: 1;
  padding: 0 34px 34px 0;
  display: grid;
  gap: 14px;
}

.booking-hero-side-card {
  padding: 18px 18px 16px;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  box-shadow: 0 18px 40px rgba(8, 20, 38, 0.16);
}

.booking-hero-side-card span {
  display: inline-flex;
  min-height: 28px;
  padding: 0 10px;
  align-items: center;
  border-radius: 999px;
  color: #ecd8aa;
  background: rgba(200, 162, 95, 0.08);
  border: 1px solid rgba(200, 162, 95, 0.2);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.booking-hero-side-card strong {
  display: block;
  margin-top: 12px;
  color: #ffffff;
  font-size: 1.2rem;
  line-height: 1.28;
}

.booking-hero-side-card p {
  margin: 10px 0 0;
  color: rgba(238, 244, 249, 0.86);
  line-height: 1.76;
  font-size: 0.95rem;
}

.booking-tip-card {
  position: relative;
  overflow: hidden;
}

.booking-tip-card::after {
  content: "";
  position: absolute;
  inset: auto -18px -24px auto;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 162, 95, 0.18), transparent 62%);
}

@media (max-width: 900px) {
  .booking-hero {
    grid-template-columns: 1fr;
  }

  .booking-hero-side {
    padding: 0 22px 22px;
  }
}