:root {
  --ink: #182b2c;
  --paper: #f4f2e9;
  --card: #fffdf6;
  --line: #c9c2ac;
  --moss: #4f5f43;
  --brass: #a9782e;
  --brass-dark: #8a6224;
  --river: #3e6e71;
  --ember: #a84326;
  --radius: 4px;
  --shadow: 0 1px 2px rgba(24,43,44,0.06), 0 8px 24px rgba(24,43,44,0.05);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.5;
}

h1, h2, h3 { font-family: 'Fraunces', Georgia, serif; margin: 0; }

.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; letter-spacing: 0.02em; }

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

/* ---------- Header ---------- */
.site-header {
  background: var(--ink);
  color: #f4f2e9;
  border-bottom: 3px solid var(--brass);
}
.site-header__inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 10px; font-family: 'Fraunces', serif; font-size: 1.05rem; }
.brand em { font-style: italic; opacity: 0.8; font-weight: 400; }
.site-header__tag { font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; opacity: 0.75; }

/* ---------- Hero ---------- */
.hero {
  max-width: 1080px;
  margin: 0 auto;
  padding: 56px 24px 24px;
}
.hero__eyebrow {
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--brass-dark);
  font-size: 0.78rem;
  margin: 0 0 10px;
}
.hero__title {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 600;
  line-height: 0.98;
  color: var(--ink);
}
.hero__title span { color: var(--river); font-style: italic; font-weight: 500; }
.hero__sub {
  max-width: 46ch;
  margin: 18px 0 0;
  font-size: 1.05rem;
  color: #3d4a42;
}

/* ---------- Layout with castline ---------- */
.layout {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px 80px;
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 32px;
}

.castline {
  position: sticky;
  top: 24px;
  align-self: start;
  height: calc(100vh - 48px);
  min-height: 500px;
}
.castline__svg {
  position: absolute;
  top: 0; left: 0;
  width: 40px;
  height: 100%;
}
.castline__stops {
  list-style: none;
  margin: 0;
  padding: 0 0 0 44px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: #7c8578;
}
.castline__stops li {
  position: relative;
  cursor: pointer;
  padding: 4px 0;
  transition: color 0.2s ease;
}
.castline__stops li .fly {
  position: absolute;
  left: -32px;
  top: 50%;
  transform: translateY(-50%);
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--line);
  border: 2px solid var(--paper);
  transition: all 0.25s ease;
}
.castline__stops li.active {
  color: var(--ink);
  font-weight: 600;
}
.castline__stops li.active .fly {
  background: var(--brass);
  box-shadow: 0 0 0 3px rgba(169,120,46,0.18);
  width: 12px; height: 12px; left: -33.5px;
}
.castline__stops li.done .fly { background: var(--river); }

@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
  .castline { display: none; }
}

/* ---------- Cards / sections ---------- */
.form { display: flex; flex-direction: column; gap: 20px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 28px 30px;
  scroll-margin-top: 24px;
}

.card__title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.card__num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--paper);
  background: var(--moss);
  width: 26px; height: 26px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ---------- Fields ---------- */
.field { margin-bottom: 18px; }
.field:last-child { margin-bottom: 0; }

label, legend {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 6px;
}
legend { padding: 0; }
fieldset { border: none; margin: 0; padding: 0; }

.req { color: var(--ember); }

input[type="text"], input[type="tel"], input[type="email"],
input[type="date"], input[type="number"], select {
  width: 100%;
  max-width: 420px;
  padding: 10px 12px;
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
}
input#dni { max-width: 220px; font-family: 'JetBrains Mono', monospace; }

input:focus, select:focus, textarea:focus, button:focus {
  outline: 2px solid var(--river);
  outline-offset: 1px;
}

.hint { font-size: 0.83rem; color: #6b7568; margin: 6px 0 0; }
.notice {
  background: #f1efe0;
  border-left: 3px solid var(--brass);
  padding: 10px 14px;
  font-size: 0.88rem;
  border-radius: 0 4px 4px 0;
  margin-top: 14px;
}

.radio-group { display: flex; flex-direction: column; gap: 10px; margin-top: 6px; }
.radio-group--inline { flex-direction: row; gap: 24px; }
.radio, .checkbox {
  display: flex;
  align-items: baseline;
  gap: 9px;
  font-weight: 400;
  font-size: 0.95rem;
  cursor: pointer;
}
.radio input, .checkbox input { margin: 0; flex-shrink: 0; transform: translateY(1px); accent-color: var(--river); }
.checkbox { margin-bottom: 14px; align-items: flex-start; }
.checkbox:last-child { margin-bottom: 0; }
.checkbox--inline { margin: 10px 0 0; font-size: 0.85rem; color: #6b7568; }

.price { font-family: 'JetBrains Mono', monospace; color: var(--brass-dark); margin-left: 6px; font-size: 0.85rem; }

.hidden { display: none !important; }

/* ---------- Payment panels ---------- */
.paypanel {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px dashed var(--line);
}
.paypanel h3 { font-size: 1.05rem; margin-bottom: 12px; }
.transfer-data { margin: 0 0 18px; display: grid; gap: 8px 24px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.transfer-data div { display: flex; justify-content: space-between; gap: 12px; border-bottom: 1px solid #ece8d8; padding-bottom: 6px; font-size: 0.9rem; }
.transfer-data dt { color: #6b7568; font-weight: 500; }
.transfer-data dd { margin: 0; font-weight: 600; text-align: right; }

.card-links { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 4px; }

/* ---------- Buttons ---------- */
.btn {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 22px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: transform 0.08s ease, background 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--brass); color: #fff; }
.btn--primary:hover { background: var(--brass-dark); }
.btn--ghost { background: transparent; border: 1.5px solid var(--river); color: var(--river); }
.btn--ghost:hover { background: rgba(62,110,113,0.08); }

.submit-row { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; padding-top: 8px; }
.form-error { color: var(--ember); font-weight: 600; font-size: 0.9rem; min-height: 1.2em; margin: 0; }

/* ---------- Modal ---------- */
.modal {
  position: fixed; inset: 0;
  background: rgba(24,43,44,0.55);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  z-index: 50;
}
.modal__card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 440px;
  box-shadow: var(--shadow);
}
.modal__card h2 { font-size: 1.5rem; margin-bottom: 12px; }
.modal__card p { margin: 0 0 12px; font-size: 0.95rem; }
.modal__firma { font-size: 0.88rem; color: #555; }
.modal__card hr { border: none; border-top: 1px solid var(--line); margin: 16px 0; }
.modal__card .btn { width: 100%; margin-top: 8px; }

/* ---------- Footer ---------- */
.site-footer {
  text-align: center;
  padding: 24px;
  font-size: 0.8rem;
  color: #6b7568;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .castline__stops li, .castline__stops li .fly { transition: none; }
}