:root {
  --ink: #17344d;
  --ink-soft: #3d5a70;
  --muted: #6b7f8e;
  --sea: #2f6f78;
  --sea-deep: #22545b;
  --glass: #e6efef;
  --sand: #f6f2ea;
  --paper: #fffdf9;
  --line: #d9e1e3;
  --alert: #a3402e;
  --alert-soft: #fbece8;
  --radius: 14px;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--sand);
  color: var(--ink);
  font: 17px/1.6 var(--sans);
}

a { color: var(--sea); }

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 0.5rem;
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.35rem; }

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
}

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1080px;
  margin: 0 auto;
  padding: 1.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 600;
  text-decoration: none;
}

.brand svg {
  width: 30px;
  height: 30px;
  fill: none;
  stroke: var(--sea);
  stroke-width: 2;
  stroke-linejoin: round;
}

.masthead nav { display: flex; gap: 1.25rem; }

.masthead nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
}

.masthead nav a:hover { color: var(--sea); }

.eyebrow, .fjord {
  margin: 0 0 0.4rem;
  color: var(--sea);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero {
  margin: 1rem 0 3rem;
  padding: clamp(2rem, 6vw, 4.5rem) clamp(1.25rem, 5vw, 4rem);
  border-radius: calc(var(--radius) * 1.5);
  color: var(--paper);
  background:
    radial-gradient(ellipse at 80% 0%, rgba(156, 199, 196, 0.35), transparent 60%),
    linear-gradient(160deg, #1d4560 0%, #17344d 55%, #102636 100%);
}

.hero .eyebrow { color: #9cc7c4; }
.hero h1 { max-width: 15ch; }

.lede {
  max-width: 42rem;
  margin: 0 0 1.75rem;
  color: #d5e3e6;
  font-size: 1.1rem;
}

.button {
  display: inline-block;
  padding: 0.75rem 1.4rem;
  border: 0;
  border-radius: 999px;
  background: var(--sea);
  color: var(--paper);
  font: 600 0.98rem/1 var(--sans);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease;
}

.button:hover { background: var(--sea-deep); }
.hero .button { background: var(--paper); color: var(--ink); }
.hero .button:hover { background: var(--glass); }

.button.secondary {
  background: transparent;
  color: var(--sea);
  box-shadow: inset 0 0 0 1.5px var(--sea);
}

.trips {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.trip, .booking-form, .booking-trip, .confirmation, .notice {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.75rem;
}

.trip { display: flex; flex-direction: column; }
.trip p { color: var(--ink-soft); }
.trip .button { align-self: flex-start; margin-top: auto; }

.facts {
  display: grid;
  gap: 0.5rem;
  margin: 0.5rem 0 1.5rem;
}

.facts div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px dashed var(--line);
}

.facts dt { color: var(--muted); font-size: 0.9rem; }
.facts dd { margin: 0; font-weight: 600; text-align: right; }

.booking {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  gap: 1.5rem;
  align-items: start;
  margin-top: 1rem;
}

.booking-trip { background: var(--glass); border-color: transparent; }
.booking-trip p { color: var(--ink-soft); }

form { display: grid; gap: 1.1rem; margin-top: 1.25rem; }
form .row { display: grid; grid-template-columns: 2fr 1fr; gap: 1rem; }

.field { display: grid; gap: 0.35rem; }
.field > span { font-size: 0.9rem; font-weight: 600; color: var(--ink-soft); }

input, select {
  width: 100%;
  min-height: 3rem;
  padding: 0.7rem 0.8rem;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

input:focus, select:focus {
  outline: none;
  border-color: var(--sea);
  box-shadow: 0 0 0 3px rgba(47, 111, 120, 0.18);
}

.field.invalid input, .field.invalid select { border-color: var(--alert); }
.field-error { color: var(--alert); font-size: 0.85rem; }

.form-error {
  margin: 1rem 0 0;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  background: var(--alert-soft);
  color: var(--alert);
}

form .button { justify-self: start; padding: 0.85rem 1.8rem; }
.fine { margin: 0; color: var(--muted); font-size: 0.85rem; }

.confirmation, .notice { max-width: 720px; margin: 1rem auto 0; }
.reference { font-size: 1.15rem; }
.reference strong { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: 0.06em; color: var(--sea); }
.facts.wide dd { text-align: right; }
.muted { color: var(--muted); font-weight: 400; }

.footer {
  max-width: 1080px;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
}

.footer p { margin: 0.2rem 0; }

@media (max-width: 760px) {
  .booking { grid-template-columns: 1fr; }
  form .row { grid-template-columns: 1fr; }
  .masthead nav a:first-child { display: none; }
}