/* ==========================================================================
   BALANTYA · Flujo Fundadores (suscripción → datos → gracias)
   Estilos compartidos por las 3 páginas. Mobile-first.
   ========================================================================== */

:root {
  --c-earth: #352116;
  --c-earth-90: #2a1a11;
  --c-sage: #687e50;
  --c-sage-dark: #566a41;
  --c-linen: #dcd1bf;
  --c-paper: #fdfaf3;
  --c-line: rgba(220, 209, 191, .32);
  --c-line-strong: rgba(220, 209, 191, .6);
  --c-muted: rgba(253, 250, 243, .68);
  --c-error: #f2b8a6;

  --f-display: "Cormorant Garamond", "Times New Roman", serif;
  --f-body: "Inter Tight", system-ui, -apple-system, "Segoe UI", sans-serif;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --radius: 2px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh; min-height: 100svh;
  background: var(--c-earth);
  color: var(--c-paper);
  font-family: var(--f-body);
  font-weight: 300;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-underline-offset: .2em; }
:focus-visible { outline: 2px solid var(--c-linen); outline-offset: 3px; }
::selection { background: var(--c-linen); color: var(--c-earth); }

/* ---------- Layout ---------- */
.page {
  min-height: 100vh; min-height: 100svh;
  display: grid; grid-template-rows: 1fr auto;
}
.main {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: clamp(3rem, 8vh, 6rem) 1rem 2.5rem;
  text-align: center;
}
.main--top { justify-content: flex-start; }

.logo { width: min(230px, 58vw); margin: 0 auto clamp(2.5rem, 7vh, 4rem); }
.logo--sm { width: min(170px, 46vw); margin-bottom: 2.5rem; }

.panel { width: 100%; max-width: 30rem; text-align: left; }
.panel--wide { max-width: 36rem; }

.lead {
  font-family: var(--f-display); font-weight: 400;
  font-size: clamp(1.5rem, 1.25rem + 1.2vw, 2.1rem); line-height: 1.2;
  text-align: center; margin: 0 0 2.5rem;
}
.lead em { font-style: italic; color: var(--c-linen); }

/* ---------- Campos ---------- */
.field { margin: 0 0 1.25rem; padding: 0; border: 0; min-width: 0; }
.field__label {
  display: block; margin: 0 0 .45rem; padding: 0;
  font-size: .72rem; font-weight: 500; letter-spacing: .16em; text-transform: uppercase;
  color: var(--c-linen);
}
.field__opt { text-transform: none; letter-spacing: 0; font-weight: 300; color: var(--c-muted); }
.field__input {
  width: 100%; min-height: 52px; padding: .8rem 1rem;
  background: rgba(253, 250, 243, .05);
  border: 1px solid var(--c-line); border-radius: var(--radius);
  color: var(--c-paper); font: inherit; font-size: 1rem; font-weight: 400;
  transition: border-color .25s var(--ease), background .25s var(--ease);
  -webkit-appearance: none; appearance: none;
}
.field__input::placeholder { color: rgba(253, 250, 243, .45); }
.field__input:hover { border-color: var(--c-line-strong); }
.field__input:focus { outline: none; border-color: var(--c-linen); background: rgba(253, 250, 243, .09); }
.field__input[aria-invalid="true"] { border-color: var(--c-error); }
.field__error { margin: .4rem 0 0; font-size: .82rem; color: var(--c-error); }
.field__error:empty { display: none; }

select.field__input {
  background-image: linear-gradient(45deg, transparent 50%, var(--c-linen) 50%), linear-gradient(135deg, var(--c-linen) 50%, transparent 50%);
  background-position: calc(100% - 20px) 52%, calc(100% - 15px) 52%;
  background-size: 5px 5px; background-repeat: no-repeat;
  padding-right: 2.5rem; cursor: pointer;
}
select.field__input option { color: var(--c-earth); }

.grid-2 { display: grid; gap: 0 1rem; }
@media (min-width: 560px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-2--wide-first { grid-template-columns: 2fr 1fr; }
}

.group-title {
  margin: 2.25rem 0 1.25rem; padding-top: 1.75rem;
  border-top: 1px solid var(--c-line);
  font-family: var(--f-display); font-style: italic; font-weight: 400; font-size: 1.35rem;
  color: var(--c-linen);
}
.group-title:first-of-type { margin-top: 0; padding-top: 0; border-top: 0; }

/* ---------- Chips de intereses ---------- */
.chips { display: grid; grid-template-columns: repeat(2, 1fr); gap: .55rem; }
@media (min-width: 480px) { .chips { grid-template-columns: repeat(3, 1fr); } }
.chip { position: relative; display: block; cursor: pointer; }
.chip input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }
.chip span {
  display: flex; align-items: center; gap: .6rem;
  min-height: 46px; padding: .55rem .85rem;
  border: 1px solid var(--c-line); border-radius: var(--radius);
  font-size: .9rem; font-weight: 400;
  transition: background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}
.chip span::before {
  content: ""; flex: none; width: 8px; height: 8px;
  border: 1px solid currentColor; transform: rotate(45deg);
  transition: background .25s var(--ease);
}
.chip:hover span { border-color: var(--c-line-strong); }
.chip input:checked + span { background: var(--c-linen); border-color: var(--c-linen); color: var(--c-earth); }
.chip input:checked + span::before { background: var(--c-earth); border-color: var(--c-earth); }
.chip input:focus-visible + span { outline: 2px solid var(--c-linen); outline-offset: 2px; }

/* ---------- Consentimiento ---------- */
.consent {
  display: grid; grid-template-columns: 18px 1fr; gap: .7rem; align-items: start;
  margin: 1.5rem 0 0; font-size: .8rem; line-height: 1.55; color: var(--c-muted); cursor: pointer;
}
.consent input { width: 18px; height: 18px; margin: .1rem 0 0; accent-color: var(--c-sage); cursor: pointer; }
.consent + .consent { margin-top: .8rem; }

/* ---------- Botón ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .6rem;
  width: 100%; min-height: 54px; margin-top: 1.75rem; padding: .85rem 1.75rem;
  background: var(--c-sage); color: var(--c-paper);
  border: 1px solid var(--c-sage); border-radius: var(--radius);
  font: inherit; font-size: .8rem; font-weight: 500; letter-spacing: .18em; text-transform: uppercase;
  cursor: pointer; text-decoration: none;
  transition: background .25s var(--ease), border-color .25s var(--ease);
}
.btn:hover { background: var(--c-sage-dark); border-color: var(--c-sage-dark); }
.btn[aria-busy="true"] { pointer-events: none; opacity: .85; }
.btn__spinner {
  display: none; width: 14px; height: 14px; border-radius: 50%;
  border: 1.5px solid currentColor; border-right-color: transparent;
  animation: spin .8s linear infinite;
}
.btn[aria-busy="true"] .btn__spinner { display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

.form-status { margin: 1rem 0 0; font-size: .85rem; text-align: center; color: var(--c-error); }
.form-status:empty { display: none; }

.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ---------- Mensajes (éxito, gracias, avisos) ---------- */
.message { max-width: 28rem; text-align: center; outline: none; animation: fadeUp .8s var(--ease); }
.message__title {
  font-family: var(--f-display); font-weight: 400; font-style: italic;
  font-size: clamp(1.7rem, 1.4rem + 1.4vw, 2.4rem); line-height: 1.15;
  margin: 0 0 .9rem; color: var(--c-linen);
}
.message p { margin: 0 0 .8rem; color: rgba(253, 250, 243, .85); }

.diamond {
  width: 9px; height: 9px; margin: 0 auto 2rem;
  border: 1px solid var(--c-linen); transform: rotate(45deg); opacity: .8;
}

/* Número de fundador */
.ref { margin: 0 0 2.25rem; }
.ref__label { display: block; font-size: .72rem; font-weight: 500; letter-spacing: .22em; text-transform: uppercase; color: var(--c-linen); margin-bottom: .6rem; }
.ref__num {
  display: block; font-family: var(--f-display); font-weight: 400;
  font-size: clamp(4.5rem, 3rem + 7vw, 7.5rem); line-height: 1; color: var(--c-paper);
  letter-spacing: .02em;
}
.ref__code {
  display: inline-block; margin-top: 1rem; padding: .35rem .9rem;
  border: 1px solid var(--c-line); border-radius: var(--radius);
  font-size: .8rem; letter-spacing: .14em; color: var(--c-linen);
}

/* ---------- Pie ---------- */
.footer {
  display: flex; flex-wrap: wrap; justify-content: center; gap: .4rem 1.5rem;
  padding: 1.5rem 1rem 1.75rem;
  font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: rgba(253, 250, 243, .5);
}
.footer a { text-decoration: none; }
.footer a:hover { color: var(--c-paper); }

/* ---------- Animación de entrada ---------- */
.fade { opacity: 0; transform: translateY(12px); animation: fadeUp 1s var(--ease) forwards; }
.fade--2 { animation-delay: .15s; }
.fade--3 { animation-delay: .3s; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

[hidden] { display: none !important; }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

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