/* leo.77delta.com: identidad propia de leo, independiente del sistema de 77 Delta. */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url('fonts/space-grotesk-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  color-scheme: dark;
  --bg: #0e0f12;
  --bg-2: #15171c;
  --bg-3: #1c1f26;
  --line: rgba(242, 241, 236, 0.1);
  --line-strong: rgba(242, 241, 236, 0.22);
  --text: #f2f1ec;
  --text-2: #b4b6bf;
  --text-3: #80838e;
  --accent: #ff6a2b;
  --accent-2: #ff8a57;
  --accent-ink: #1a0b04;
  --ok: #7fd1a4;
  --bad: #ff8b8b;
  --radius: 14px;
  --radius-s: 10px;
  --font: 'Space Grotesk', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --measure: 62ch;
  --gutter: 16px;
}
/* El sitio es oscuro por identidad; los tokens no cambian con el tema del sistema. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) { color-scheme: dark; }
}
:root[data-theme='dark'] { color-scheme: dark; }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.55;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: underline; text-decoration-color: var(--line-strong); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
img, svg { display: block; max-width: 100%; }
p { margin: 0; }
h1, h2, h3 { margin: 0; font-weight: 500; letter-spacing: -0.02em; line-height: 1.1; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.wrap { width: 100%; max-width: 1080px; margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }

/* Cabecera */
.top { position: sticky; top: 0; z-index: 10; background: rgba(14, 15, 18, 0.82); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 60px; }
.mark { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 600; font-size: 20px; letter-spacing: -0.02em; }
.mark svg { width: 26px; height: 26px; }
.top nav { display: flex; gap: 20px; font-size: 15px; color: var(--text-2); }
.top nav a { text-decoration: none; }
.top nav a:hover { color: var(--text); }
.top nav .cta { color: var(--text); border: 1px solid var(--line-strong); border-radius: 999px; padding: 6px 14px; }
.top nav .cta:hover { border-color: var(--accent); }
@media (max-width: 640px) { .top nav a:not(.cta) { display: none; } }

/* Portada */
.hero { padding: 72px 0 56px; border-bottom: 1px solid var(--line); position: relative; }
.hero .wrap { display: grid; gap: 40px; grid-template-columns: minmax(0, 1fr); align-items: center; }
@media (min-width: 860px) { .hero { padding: 104px 0 88px; } .hero .wrap { grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: 56px; } }
.status { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--text-2); border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; }
.status::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.hero h1 { margin-top: 24px; font-size: clamp(38px, 7vw, 68px); font-weight: 500; max-width: 14ch; }
.hero h1 .name { font-weight: 700; }
.hero h1 .dot { color: var(--accent); }
.hero .sub { margin-top: 20px; font-size: clamp(18px, 2.2vw, 22px); color: var(--text-2); max-width: 36ch; font-weight: 300; }
.hero .actions { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; font: inherit; font-weight: 600; font-size: 16px; padding: 14px 22px; border-radius: 999px; border: 0; cursor: pointer; text-decoration: none; transition: transform 0.15s ease, background-color 0.15s ease; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-2); transform: translateY(-1px); }
.btn-ghost { color: var(--text-2); padding-left: 0; padding-right: 0; background: transparent; }
.btn-ghost:hover { color: var(--text); }
.btn[disabled] { opacity: 0.6; cursor: wait; transform: none; }

/* Onda de voz */
.wave { display: grid; place-items: center; min-height: 220px; padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: radial-gradient(120% 90% at 50% 100%, rgba(255, 106, 43, 0.14), transparent 60%), var(--bg-2); }
.wave svg { width: 100%; max-width: 360px; height: auto; }
.wave rect { fill: var(--accent); transform-box: fill-box; transform-origin: center; }
@media (prefers-reduced-motion: no-preference) {
  .wave rect { animation: pulse 1.9s ease-in-out infinite; }
  .wave rect:nth-child(2n) { animation-delay: 0.25s; }
  .wave rect:nth-child(3n) { animation-delay: 0.5s; animation-duration: 2.3s; }
  .wave rect:nth-child(5n) { animation-delay: 0.9s; animation-duration: 1.6s; }
  @keyframes pulse { 0%, 100% { transform: scaleY(0.55); } 50% { transform: scaleY(1); } }
}
.wave figcaption { margin-top: 18px; font-size: 13px; color: var(--text-3); font-family: var(--mono); letter-spacing: 0.02em; }

/* Secciones */
section { padding: 64px 0; border-bottom: 1px solid var(--line); }
@media (min-width: 860px) { section { padding: 88px 0; } }
.kicker { font-family: var(--mono); font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent); }
.h2 { margin-top: 12px; font-size: clamp(28px, 4vw, 40px); max-width: 22ch; }
.lead { margin-top: 16px; color: var(--text-2); font-size: 18px; max-width: var(--measure); font-weight: 300; }

.cards { margin-top: 40px; display: grid; gap: 16px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 720px) { .cards { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.card { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px 28px; display: flex; flex-direction: column; gap: 14px; }
.card .n { font-family: var(--mono); font-size: 13px; color: var(--accent); }
.card h3 { font-size: 22px; }
.card p { color: var(--text-2); font-size: 16px; }

.steps { margin-top: 40px; display: grid; gap: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.step { display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 16px; padding: 22px 20px; background: var(--bg-2); border-top: 1px solid var(--line); }
.step:first-child { border-top: 0; }
.step .n { font-family: var(--mono); color: var(--accent); font-size: 14px; padding-top: 4px; }
.step h3 { font-size: 19px; }
.step p { margin-top: 6px; color: var(--text-2); font-size: 16px; }

.two { margin-top: 40px; display: grid; gap: 16px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 860px) { .two { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.panel { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; }
.panel h3 { font-size: 20px; }
.panel .note { margin-top: 6px; font-size: 14px; color: var(--text-3); }
.list { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 10px; }
.list li { display: grid; grid-template-columns: 12px minmax(0, 1fr); gap: 12px; color: var(--text-2); font-size: 16px; }
.list li::before { content: ''; margin-top: 10px; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.list b { color: var(--text); font-weight: 500; }
.targets { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 10px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.targets li { background: var(--bg-3); border-radius: var(--radius-s); padding: 14px 14px 12px; }
.targets .v { display: block; font-size: 22px; font-weight: 600; letter-spacing: -0.02em; }
.targets .k { display: block; margin-top: 2px; font-size: 13px; color: var(--text-3); }

.uses { margin-top: 40px; display: grid; gap: 14px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 720px) { .uses { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.use { display: grid; gap: 6px; padding: 20px 0 0; border-top: 1px solid var(--line-strong); }
.use h3 { font-size: 19px; }
.use p { color: var(--text-2); font-size: 16px; }

/* Estado */
.plain { background: var(--bg-2); }
.plain .box { border-left: 3px solid var(--accent); padding-left: 22px; max-width: var(--measure); }
.plain .box p { font-size: clamp(19px, 2.4vw, 24px); font-weight: 300; line-height: 1.4; }
.plain .box p + p { margin-top: 14px; color: var(--text-2); font-size: 17px; }

/* Lista de espera */
.form-grid { margin-top: 36px; display: grid; gap: 32px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 860px) { .form-grid { grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 48px; } }
form { display: grid; gap: 18px; background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px 28px; }
@media (min-width: 560px) { form { padding: 32px 30px 34px; } .row { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.row { display: grid; gap: 18px; }
.field { display: grid; gap: 8px; }
label { font-size: 14px; color: var(--text-2); }
label b { color: var(--text); font-weight: 500; }
input, select, textarea { width: 100%; font: inherit; font-size: 16px; color: var(--text); background: var(--bg); border: 1px solid var(--line-strong); border-radius: var(--radius-s); padding: 12px 14px; transition: border-color 0.15s ease; }
input::placeholder, textarea::placeholder { color: var(--text-3); }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%23b4b6bf' stroke-width='1.6'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 40px; }
textarea { resize: vertical; min-height: 92px; }
.hp { position: absolute; left: -10000px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.fine { font-size: 13px; color: var(--text-3); line-height: 1.5; }
.msg { font-size: 15px; min-height: 1.4em; }
.msg.ok { color: var(--ok); }
.msg.bad { color: var(--bad); }
.repo { display: inline-flex; align-items: center; gap: 8px; margin-top: 18px; font-size: 15px; color: var(--text-2); }

/* Pie */
footer { padding: 40px 0 48px; color: var(--text-3); font-size: 14px; }
footer .wrap { display: grid; gap: 14px; }
footer .brand { color: var(--text-2); font-size: 15px; }
footer .brand a { color: var(--text); text-decoration-color: var(--line-strong); }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 18px; }
footer nav a { text-decoration: none; }
footer nav a:hover { color: var(--text); text-decoration: underline; }
footer .legal { max-width: 70ch; }