/* El chico de sistemas · formulario «Contame tu proyecto».
   Misma marca que la página principal (grafito, hueso y un único acento lima), pero con su propio archivo: no toca styles.css.
   Concepto: una columna angosta, un paso por pantalla, barra de pasos arriba y botones fijos abajo. */
@font-face { font-family: "Space Grotesk"; src: url("/assets/fonts/grotesk.woff2") format("woff2"); font-weight: 300 700; font-style: normal; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("/assets/fonts/jbmono-400.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("/assets/fonts/jbmono-500.woff2") format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }

:root {
  color-scheme: dark;
  --ground: #111418;
  --ink: #F3F0E8;
  --soft: #8C96A1;
  --faint: #5E6873;
  --tone: #1D232B;
  --surface: #171C22;
  --accent: #C8F04B;
  --accent-up: #D8F770;
  --line: rgba(243, 240, 232, .14);
  --line-strong: rgba(243, 240, 232, .34);
  --dot: rgba(243, 240, 232, .09);
  --danger: #FF9C8C;
  --font: "Space Grotesk", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground); color: var(--ink);
  font: 400 16px/1.55 var(--font);
  -webkit-font-smoothing: antialiased;
  padding: 0 max(16px, env(safe-area-inset-left, 0px)) 28px max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
::selection { background: var(--accent); color: var(--ground); }
[hidden] { display: none !important; }
a { color: inherit; }
button { font: inherit; color: inherit; }
.wrap { max-width: 720px; margin: 0 auto; }
.sr { 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: fixed; left: 16px; top: -80px; z-index: 50; background: var(--ink); color: var(--ground); padding: 12px 18px; font-weight: 700; text-decoration: none; }
.skip:focus { top: 12px; }
.tagm { font: 500 12px/1.2 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--soft); margin: 0; }

.top { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; padding-block: 18px 10px; }
.logo { font-weight: 700; font-size: 1.0625rem; letter-spacing: -.02em; text-decoration: none; }
.logo span { color: var(--accent); }
.top-wa { color: var(--soft); font-size: 14px; text-decoration: none; }
.top-wa:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }

.hero { position: relative; isolation: isolate; padding-block: 34px 8px; }
.hero::before {
  content: ""; position: absolute; inset: 0 -16px; z-index: -1; pointer-events: none;
  background-image: radial-gradient(var(--dot) 1px, transparent 1.3px); background-size: 20px 20px;
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent); mask-image: linear-gradient(to bottom, #000, transparent);
}
h1 { font: 700 clamp(34px, 8vw, 52px)/1.02 var(--font); letter-spacing: -.025em; margin: 0 0 12px; text-wrap: balance; }
.lead { color: var(--soft); font-size: 18px; margin: 0 0 22px; max-width: 56ch; }
.hint { color: var(--soft); font-size: 14px; margin: 0 0 8px; }
.link { background: none; border: 0; padding: 6px 0; font-size: 14px; color: var(--ink); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
h2:focus-visible, #stage:focus-visible { outline: none; }

.chooser { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; border: 0; padding: 0; margin: 0 0 8px; min-width: 0; }
@media (max-width: 560px) { .chooser { grid-template-columns: 1fr; } }
.tab { position: relative; display: block; min-width: 0; }
.tab input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.tabin { display: grid; gap: 2px; height: 100%; border: 1px solid var(--line-strong); border-radius: 14px; background: var(--surface); padding: 16px 16px 14px; }
.tabin strong { font-size: 19px; letter-spacing: -.01em; }
.tabin span { color: var(--soft); font-size: 14px; }
.tab:hover .tabin { border-color: var(--ink); }
.tab input:checked + .tabin { border-color: var(--ink); background: var(--tone); box-shadow: inset 0 4px 0 var(--accent); }
.tab input:focus-visible + .tabin { outline: 2px solid var(--ink); outline-offset: 3px; }

#stage { padding-top: 26px; outline: none; }
.steps { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 6px; }
.seg { border: 0; background: none; padding: 10px 0; cursor: pointer; display: block; min-width: 0; }
.seg i { display: block; height: 6px; border-radius: 3px; background: var(--line); }
.seg.done i { background: var(--soft); }
.seg[aria-current="step"] i { background: var(--accent); }
.meta { margin: 14px 0 10px; }
h2 { font: 700 clamp(26px, 6vw, 34px)/1.1 var(--font); letter-spacing: -.02em; margin: 0 0 8px; text-wrap: balance; outline: none; }
.intro { color: var(--soft); margin: 0 0 24px; max-width: 60ch; }

.field { margin: 0 0 24px; border: 0; padding: 0; min-width: 0; }
.q { display: block; font-weight: 700; font-size: 16px; margin: 0 0 4px; padding: 0; width: 100%; float: none; }
.mode { font: 500 11px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--soft); margin-left: 8px; white-space: nowrap; }
input[type=text], input[type=tel], input[type=email], input[type=number], textarea, select {
  width: 100%; min-width: 0; font: inherit; color: var(--ink); background: var(--surface);
  border: 1px solid var(--line-strong); border-radius: 10px; padding: 12px 14px; min-height: 48px;
}
textarea { resize: vertical; min-height: 96px; }
::placeholder { color: var(--soft); opacity: .8; }
input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 2px solid var(--ink); outline-offset: 1px; }
.invalid input, .invalid textarea, .invalid select { border-color: var(--danger); }
.err { color: var(--danger); font-size: 14px; margin: 6px 0 0; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { position: relative; display: inline-flex; max-width: 100%; }
.chip input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.chip span { display: flex; align-items: center; min-height: 44px; padding: 9px 14px; line-height: 1.3; border: 1px solid var(--line-strong); border-radius: 12px; background: var(--surface); cursor: pointer; }
.chip:hover span { border-color: var(--ink); }
.chip input:checked + span { background: var(--ink); color: var(--ground); border-color: var(--ink); font-weight: 500; }
.chip input:focus-visible + span { outline: 2px solid var(--ink); outline-offset: 2px; }

.rows { list-style: none; padding: 0; margin: 0 0 12px; display: grid; gap: 8px; }
.rows li { display: grid; grid-template-columns: 28px minmax(0, 1fr) 44px; gap: 8px; align-items: center; }
.rows li.n2 { grid-template-columns: 28px minmax(0, 1fr); }
.num { font: 500 13px var(--mono); color: var(--soft); text-align: right; }
.x { width: 44px; height: 44px; border: 1px solid var(--line-strong); border-radius: 10px; background: transparent; color: var(--soft); font-size: 22px; line-height: 1; cursor: pointer; }
.x:hover { color: var(--ink); border-color: var(--ink); }

.roles { display: grid; gap: 12px; margin-bottom: 12px; }
.role { display: grid; gap: 12px; border: 1px solid var(--line); background: var(--surface); border-radius: 14px; padding: 14px; }
.rolehead { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.rolegrid { display: grid; grid-template-columns: minmax(0, 1fr) 110px; gap: 12px; align-items: end; }
.role label { display: block; font-size: 14px; color: var(--soft); margin-bottom: 4px; }

.note { border: 1px solid var(--line-strong); border-radius: 12px; padding: 14px 16px; background: var(--surface); margin-bottom: 24px; }
.note p { margin: 4px 0 0; color: var(--soft); }

.btn { font: 700 1.0625rem/1 var(--font); letter-spacing: -.01em; border-radius: 999px; padding: 0 28px; min-height: 52px; border: 1px solid transparent; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 8px; text-decoration: none; transition: transform .22s cubic-bezier(.2, .7, .2, 1), background-color .22s; }
.btn.primary { background: var(--accent); color: var(--ground); }
.btn.primary:hover { background: var(--accent-up); transform: translateY(-2px); }
.btn.primary:active { transform: scale(.97); }
.btn.primary[disabled] { opacity: .6; cursor: progress; transform: none; }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn.ghost:hover { border-color: var(--ink); }
.btn.sm { min-height: 40px; padding: 0 18px; font-size: 14px; font-weight: 500; }

.nav { position: sticky; bottom: 0; display: flex; justify-content: space-between; gap: 12px; padding: 16px 0 calc(16px + env(safe-area-inset-bottom, 0px)); background: linear-gradient(to top, var(--ground) 72%, transparent); margin-top: 8px; }
.nav .only-next { margin-left: auto; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.rsec { border-top: 1px solid var(--line); padding: 16px 0; }
.rsec header { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.rsec h3 { font: 700 18px/1.2 var(--font); margin: 0; }
.rsec dl { margin: 10px 0 0; display: grid; gap: 12px; }
.rsec dt { color: var(--soft); font-size: 14px; }
.rsec dd { margin: 2px 0 0; white-space: pre-wrap; overflow-wrap: anywhere; }

.panel { border: 1px solid var(--line); background: var(--surface); border-radius: 16px; padding: 22px 20px; margin: 0 0 16px; }
.panel h2 { margin-top: 10px; }
.sigue { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 12px; counter-reset: s; }
.sigue li { display: grid; grid-template-columns: 30px minmax(0, 1fr); gap: 12px; align-items: start; counter-increment: s; }
.sigue li::before { content: counter(s); font: 500 13px/28px var(--mono); text-align: center; width: 28px; height: 28px; border: 1px solid var(--line-strong); border-radius: 50%; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 18px; }
.flash { font-size: 14px; color: var(--soft); }
.panel details { margin-top: 18px; }
.panel summary { cursor: pointer; color: var(--soft); font-size: 14px; }
pre.brief { margin: 10px 0 0; padding: 16px; background: var(--ground); border: 1px solid var(--line); border-radius: 12px; font: 400 13px/1.6 var(--mono); white-space: pre-wrap; overflow-wrap: anywhere; max-height: 360px; overflow: auto; color: var(--ink); }

.foot { margin-top: 48px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--soft); font-size: 14px; }
.foot p { margin: 0 0 6px; }

/* Página de gracias (/proyecto/gracias) */
.gracias .hero { padding-bottom: 0; }
.gracias .sigue { margin-top: 8px; }
.gracias .actions { margin-top: 28px; }
.sigue strong { display: block; font-size: 17px; letter-spacing: -.01em; }
.sigue p { margin: 2px 0 0; color: var(--soft); }
.sigue .dato { font: 500 12px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--accent); margin-left: 8px; white-space: nowrap; }
.fiesta { position: relative; isolation: isolate; overflow: hidden; margin-top: 44px; padding: 30px 22px 28px; text-align: center; border: 1px solid var(--line-strong); border-radius: 18px; background: var(--surface); box-shadow: inset 0 4px 0 var(--accent); }
.fiesta h2 { margin: 12px 0 10px; font-size: clamp(26px, 6.5vw, 36px); }
.fiesta .lima { color: var(--accent); }
.fiesta .intro { margin: 0 auto 20px; }
.cupon { display: grid; gap: 8px; justify-items: center; width: fit-content; margin: 0 auto 20px; padding: 12px 24px 14px; border: 2px dashed var(--line-strong); border-radius: 12px; background: var(--ground); }
.cupon strong { font: 600 clamp(22px, 6vw, 28px)/1 var(--mono); letter-spacing: .12em; }
.fiesta .mas { margin: 16px 0 0; font-size: 14px; }
.fiesta .mas a { color: var(--soft); text-underline-offset: 3px; }
.fiesta .mas a:hover { color: var(--ink); }
.confeti i { position: absolute; z-index: -1; left: var(--x); top: var(--y); width: 8px; height: 14px; border-radius: 2px; background: var(--accent); transform: rotate(var(--r)); opacity: .9; animation: cae 1.8s cubic-bezier(.2, .7, .2, 1) both; }
.confeti i:nth-child(3n) { background: var(--ink); }
.confeti i:nth-child(3n+1) { background: var(--soft); width: 7px; height: 7px; border-radius: 50%; }
.confeti i:nth-child(2n) { animation-delay: .12s; }
@keyframes cae { from { transform: translateY(-150px) rotate(0deg); opacity: 0; } }

@media (prefers-reduced-motion: reduce) { .btn { transition: none; } }