/* ============================================================
   Kit de arranque - Asociación de Medicina Respiratoria de Ecuatorianos en Argentina

   Lectura de diseño: formulario guiado para un usuario no técnico que lo abre
   desde el celular. Lenguaje editorial: tipo fuerte, bloques de tinta, aire,
   cero clichés médicos. Dials: VARIANCE 3 (predecible a propósito, es un
   formulario), MOTION 4 (micro-movimientos con curva propia), DENSITY 3.

   Paleta neutra, fácil de re-brandear: cuando lleguen el logo y los colores
   reales, se cambian solo estas variables.
   - Papel frío (no crema), tinta verde-negro, UN solo acento petróleo.
   - Regla de radios (fija): botones y pills 999px, campos 14px,
     contenedores 26px afuera / 20px adentro (concéntricos).
   - Escala de z-index: 30 stepnav, 40 topbar, 60 grano (solo decorativo).
   ============================================================ */

:root {
  /* Color */
  --paper: #F5F6F4;
  --card: #FCFCFB;
  --ink: #101817;
  --ink-soft: #1B2422;
  --muted: #57605C;
  --line: rgba(16, 24, 23, 0.14);
  --line-soft: rgba(16, 24, 23, 0.08);
  --accent: #0D4C41;
  --accent-soft: #E4EDE9;
  --accent-ink: #233B35;
  --error: #8F2A2A;
  --on-ink: #F2F5F3;
  --on-ink-muted: #AEBAB5;

  /* Forma */
  --radius-pill: 999px;
  --radius-input: 14px;
  --radius-shell: 26px;
  --radius-shell-inner: 20px;

  /* Movimiento */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  /* Sombra suave, tintada al tono del fondo (nunca negro puro) */
  --shadow-soft: 0 30px 60px -40px rgba(16, 24, 23, 0.35), 0 2px 8px -2px rgba(16, 24, 23, 0.06);
}

/* ---------- Base ---------- */

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Archivo", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.55;
  font-weight: 400;
  overflow-wrap: break-word;
}

[hidden] { display: none !important; }

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

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 80;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  font-weight: 600;
}
.skip:focus { left: 12px; }

/* Grano sutil: textura de papel, fija y sin interacción (nunca en contenedores que scrollean) */
.grain {
  position: fixed;
  inset: 0;
  z-index: 60;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px 180px;
}

/* Foco visible siempre, en tinta o sobre fondo oscuro */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}
.on-ink :focus-visible { outline-color: var(--on-ink); }

/* ---------- Barra superior ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(245, 246, 244, 0.92);
  backdrop-filter: blur(12px) saturate(1.1);
  -webkit-backdrop-filter: blur(12px) saturate(1.1);
  border-bottom: 1px solid var(--line-soft);
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .topbar { background: var(--paper); }
}

.topbar__inner {
  max-width: 640px;
  margin: 0 auto;
  padding: 11px 16px 9px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.wordmark {
  font-weight: 700;
  font-size: 15.5px;
  letter-spacing: -0.01em;
}

.topbar__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.paso-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.save-state {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--accent);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  text-align: right;
}
.save-state.is-on { opacity: 1; }
.save-state.is-error { opacity: 1; color: var(--error); }

.progress {
  height: 3px;
  background: var(--line-soft);
  overflow: hidden;
}
.progress__fill {
  height: 100%;
  background: var(--accent);
  transform-origin: left center;
  transform: scaleX(0.1);
  transition: transform 0.5s var(--ease);
}

/* ---------- Columna principal ---------- */

.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  flex-direction: column;
}

.resume-note {
  margin: 16px 0 0;
  background: var(--accent-soft);
  color: var(--accent-ink);
  border-radius: var(--radius-input);
  padding: 11px 14px;
  font-size: 14.5px;
}

/* ---------- Pasos ---------- */

.step { display: none; }
.step.is-active {
  display: block;
  animation: rise 0.5s var(--ease) both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}

/* Bloque de color (tinta): apertura y cierre del kit, los dos únicos momentos oscuros */
.colorblock {
  background: var(--ink);
  color: var(--on-ink);
  border-radius: var(--radius-shell);
  padding: 30px 22px;
  margin-top: 18px;
}

.colorblock__org {
  margin: 0 0 20px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  line-height: 1.7;
  color: var(--on-ink-muted);
}

.colorblock__title {
  margin: 0 0 16px;
  font-size: clamp(34px, 9.5vw, 46px);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--on-ink);
}

.colorblock__lead {
  margin: 0 0 12px;
  font-size: 16.5px;
  line-height: 1.6;
  color: #C6D0CB;
  max-width: 52ch;
}
.colorblock__lead:last-of-type { margin-bottom: 0; }

.colorblock__list {
  margin: 4px 0 20px;
  padding-left: 20px;
  font-size: 16px;
  line-height: 1.6;
  color: #C6D0CB;
  display: grid;
  gap: 6px;
}
.colorblock__list li::marker { color: var(--on-ink-muted); }

.colorblock__fine {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--on-ink-muted);
}
.colorblock .btn { margin-top: 10px; }
.colorblock__list + .btn { margin-top: 0; }

/* Contenedor tipo "doble bisel": marco exterior + tarjeta interior */
.shell {
  background: rgba(16, 24, 23, 0.045);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-shell);
  padding: 6px;
  margin-top: 14px;
}
.colorblock + .shell { margin-top: 12px; }
.colorblock { margin-bottom: 0; }
.shell + .shell { margin-top: 14px; }

.shell__core {
  background: var(--card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-shell-inner);
  padding: 22px 18px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8), var(--shadow-soft);
}

.step__title {
  margin: 2px 0 10px;
  font-size: clamp(24px, 6.6vw, 32px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
}
.step__title:focus { outline: none; }

.step__hint {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 16px;
  max-width: 56ch;
}

/* ---------- Campos ---------- */

.field { margin: 0 0 22px; }
.field:last-child { margin-bottom: 0; }

fieldset.field {
  border: 0;
  padding: 0;
  min-width: 0;
  margin-inline: 0;
}
.field--after-rows { margin-top: 26px; }

.field__label,
.row-field__label {
  display: block;
  font-weight: 600;
  font-size: 15.5px;
  line-height: 1.4;
  margin: 0 0 8px;
  letter-spacing: 0.005em;
}

.opt-note {
  font-weight: 400;
  color: var(--muted);
  white-space: nowrap;
}

input[type="text"],
input[type="date"],
textarea {
  width: 100%;
  font: inherit;
  font-size: 17px;
  color: var(--ink);
  background: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: var(--radius-input);
  padding: 13px 14px;
  min-height: 52px;
  box-shadow: inset 0 1px 2px rgba(16, 24, 23, 0.04);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
input[type="date"] { min-height: 54px; }

textarea {
  min-height: 118px;
  line-height: 1.55;
  resize: vertical;
}

input[type="text"]:focus,
input[type="date"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(13, 76, 65, 0.16);
}
input[type="text"]:focus-visible,
input[type="date"]:focus-visible,
textarea:focus-visible { outline: none; }

input[aria-invalid="true"] { border-color: var(--error); }

.hint {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--muted);
  max-width: 60ch;
}
.hint--tight { margin: 0 0 10px; }
.hint--live { color: var(--accent); font-weight: 600; }

.error {
  margin: 8px 0 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--error);
}

.note {
  margin: 22px 0 0;
  background: var(--accent-soft);
  color: var(--accent-ink);
  border-radius: var(--radius-input);
  padding: 13px 14px;
  font-size: 15px;
  line-height: 1.55;
}
.note--plain {
  background: transparent;
  border: 1px solid var(--line-soft);
  color: var(--muted);
  margin: 0 0 16px;
}

/* ---------- Opciones tipo píldora (radios) ---------- */

.opts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.opt {
  position: relative;
  display: inline-flex;
  cursor: pointer;
}

.opt input {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.opt span {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: #FFFFFF;
  font-weight: 500;
  font-size: 15.5px;
  line-height: 1.2;
  transition: background-color 0.25s var(--ease), border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.opt:hover span { border-color: var(--ink); }

.opt input:checked + span,
.opt.is-checked span {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.opt:focus-within span {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- Filas dinámicas (comisión, videos) ---------- */

.rows {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 0 0 16px;
}
.rows:empty { margin-bottom: 0; }

.row-row {
  background: #FFFFFF;
  border: 1px solid var(--line-soft);
  border-radius: 18px;
  padding: 13px 14px 15px;
}

.row-row__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.row-row__num {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.btn-remove {
  background: none;
  border: 0;
  padding: 8px 2px;
  min-height: 44px;
  font: inherit;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--error);
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}

.row-row__fields {
  display: grid;
  gap: 12px;
}

.row-field__label { font-size: 14.5px; margin-bottom: 6px; }
.row-row input[type="text"] { min-height: 48px; padding: 11px 13px; }

.rows-empty {
  margin: 0 0 16px;
  font-size: 15px;
  color: var(--muted);
}

/* ---------- Botones ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 0;
  border-radius: var(--radius-pill);
  font: inherit;
  font-weight: 600;
  font-size: 16.5px;
  letter-spacing: 0.005em;
  padding: 14px 24px;
  min-height: 54px;
  cursor: pointer;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.2s var(--ease), background-color 0.25s var(--ease),
              border-color 0.25s var(--ease), color 0.25s var(--ease);
}
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.65; cursor: default; transform: none; }

.btn--primary { background: var(--ink); color: var(--paper); }
.btn--primary:hover:not(:disabled) { background: var(--ink-soft); }

.btn--ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
}
.btn--ghost:hover { border-color: var(--ink); }

.btn--paper { background: var(--paper); color: var(--ink); }
.btn--paper:hover { background: #FFFFFF; }
.btn--paper .btn__icon { background: rgba(16, 24, 23, 0.08); }

.btn--wide { width: 100%; }

.btn__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-pill);
  background: rgba(245, 246, 244, 0.14);
  font-size: 15px;
  line-height: 1;
  transition: transform 0.25s var(--ease);
}
.btn:hover .btn__icon { transform: translateX(3px); }

.btn--add { align-self: flex-start; }

/* ---------- Resumen (paso 10) ---------- */

.resumen { margin-top: 4px; }

.sumgroup {
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
}
.sumgroup:first-child { border-top: 0; padding-top: 0; }

.sumgroup__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}
.sumgroup__head h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.005em;
}

.linklike {
  background: none;
  border: 0;
  padding: 8px 2px;
  min-height: 44px;
  font: inherit;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
  white-space: nowrap;
}

.sumlist {
  margin: 0;
  display: grid;
  gap: 10px;
}
.sumrow { display: grid; gap: 3px; }
.sumrow dt {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.sumrow dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.5;
  white-space: pre-wrap;
}
.sumrow dd.is-empty { color: var(--muted); font-style: italic; }

/* ---------- Barra de navegación entre pasos ---------- */

.stepnav {
  position: sticky;
  bottom: 0;
  z-index: 30;
  margin-top: 28px;
  padding: 12px 0 calc(12px + env(safe-area-inset-bottom));
  background: rgba(245, 246, 244, 0.9);
  backdrop-filter: blur(12px) saturate(1.1);
  -webkit-backdrop-filter: blur(12px) saturate(1.1);
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .stepnav { background: var(--paper); }
}

.stepnav__inner {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

#btn-next { margin-left: auto; min-width: 148px; }

/* ---------- Pie ---------- */

.footer {
  max-width: 640px;
  margin: 0 auto;
  padding: 10px 16px calc(36px + env(safe-area-inset-bottom));
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}
.footer p { margin: 0 0 6px; }
.footer a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Pantallas más grandes ---------- */

@media (min-width: 560px) {
  .row-row--comision .row-row__fields { grid-template-columns: 1fr 1fr; }
  .row-row--video .row-row__fields { grid-template-columns: 1fr 1fr; }
  .row-row--video .row-field--link { grid-column: 1 / -1; }
}

@media (min-width: 720px) {
  .wrap { padding: 0 20px; }
  .topbar__inner, .stepnav__inner, .footer { padding-left: 20px; padding-right: 20px; }
  .colorblock { padding: 44px 40px; margin-top: 26px; }
  .shell__core { padding: 34px 30px; }
  .stepnav { margin-top: 36px; }
}

/* ---------- Movimiento reducido ---------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}