/* ============================================================
   EfraCode — estilos
   Negro #0d0d0d · Naranja #f97316 · Fira Code + Archivo
   ============================================================ */

:root{
  --ink:        #0d0d0d;
  --ink-raised: #141414;
  --ink-soft:   #191919;
  --line:       #272727;
  --line-soft:  #1e1e1e;
  --orange:     #f97316;
  --orange-dim: #c25a10;
  --paper:      #f5f3f0;
  --muted:      #8f8a84;

  /* colores de sintaxis, tomados del editor que usamos en el curso */
  --syn-tag:     #7dd3fc;
  --syn-attr:    #fbbf24;
  --syn-text:    #d6d3d0;
  --syn-comment: #6b7280;

  --mono: 'Fira Code', ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: 'Archivo', system-ui, -apple-system, sans-serif;

  --shell: 1120px;
  --r: 12px;
}

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

html{ scroll-behavior:smooth; }

body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}

img{ max-width:100%; display:block; }

a{ color:inherit; }

::selection{ background:var(--orange); color:#0d0d0d; }

:focus-visible{
  outline:2px solid var(--orange);
  outline-offset:3px;
  border-radius:4px;
}

.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:22px;
}

.skip{
  position:absolute; left:-9999px;
  background:var(--orange); color:#0d0d0d;
  padding:10px 16px; border-radius:8px;
  font-family:var(--mono); font-size:14px; font-weight:600;
  z-index:99;
}
.skip:focus{ left:16px; top:16px; }

/* ---------- logo ---------- */
.logo{
  display:inline-flex; align-items:center; gap:10px;
  text-decoration:none;
}
.logo-mark{
  font-family:var(--mono);
  font-weight:700;
  font-size:22px;
  letter-spacing:-.06em;
  color:var(--paper);
  line-height:1;
}
.logo-mark i{ color:var(--orange); font-style:normal; }
.logo-word{
  font-family:var(--mono);
  font-weight:600;
  font-size:17px;
  letter-spacing:-.02em;
}

/* ---------- nav ---------- */
.nav{
  position:sticky; top:0; z-index:50;
  background:rgba(13,13,13,.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
}
.nav-inner{
  display:flex; align-items:center; justify-content:space-between;
  height:66px;
}

/* ---------- botones ---------- */
.btn{
  display:inline-block;
  background:var(--orange);
  color:#0d0d0d;
  font-family:var(--mono);
  font-weight:600;
  font-size:15px;
  letter-spacing:-.01em;
  text-decoration:none;
  padding:13px 24px;
  border:none;
  border-radius:8px;
  cursor:pointer;
  transition:transform .15s ease, background .15s ease;
}
.btn:hover{ background:#fb8a3c; transform:translateY(-1px); }
.btn:active{ transform:translateY(0); }

.btn-sm{ padding:9px 16px; font-size:14px; }
.btn-lg{ padding:16px 30px; font-size:17px; }
.btn-block{ display:block; width:100%; padding:16px; font-size:17px; }
.btn[disabled]{ opacity:.55; cursor:not-allowed; transform:none; }

.link{
  color:var(--orange);
  text-decoration:none;
  font-weight:600;
  border-bottom:1px solid transparent;
  transition:border-color .15s ease;
}
.link:hover{ border-bottom-color:var(--orange); }

/* ---------- hero ---------- */
.hero{ padding:72px 0 40px; }

.eyebrow{
  font-family:var(--mono);
  font-size:12.5px;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--orange);
  margin:0 0 22px;
}

.hero-title{
  font-family:var(--mono);
  font-weight:700;
  font-size:clamp(30px, 5.4vw, 62px);
  line-height:1.08;
  letter-spacing:-.045em;
  margin:0 0 22px;
}
.hero-title em{
  font-style:normal;
  color:var(--orange);
}

.hero-sub{
  font-size:clamp(17px, 2vw, 20px);
  color:var(--muted);
  max-width:56ch;
  margin:0 0 32px;
}

.hero-actions{
  display:flex; align-items:center; gap:20px;
  flex-wrap:wrap;
  margin-bottom:60px;
}
.hero-note{
  margin:0;
  font-size:14.5px;
  color:var(--muted);
}

/* ---------- demo: escribes código → aparece la página ---------- */
.demo{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:stretch;
  gap:16px;
}

.demo-panel{
  background:var(--ink-raised);
  border:1px solid var(--line);
  border-radius:var(--r);
  overflow:hidden;
  min-width:0;
}

.panel-bar{
  display:flex; align-items:center; gap:10px;
  padding:11px 14px;
  border-bottom:1px solid var(--line);
  background:var(--ink-soft);
  font-family:var(--mono);
  font-size:12px;
  color:var(--muted);
}
.panel-name,.panel-url{ color:var(--syn-text); }
.panel-tag{
  margin-left:auto;
  color:var(--orange);
  font-size:11px;
  letter-spacing:.04em;
}
.dots{ display:inline-flex; gap:5px; }
.dots i{
  width:9px; height:9px; border-radius:50%;
  background:#2f2f2f; display:block;
}

.code{
  margin:0;
  padding:20px 16px 24px;
  font-family:var(--mono);
  font-size:13.5px;
  line-height:1.85;
  color:var(--syn-text);
  white-space:pre-wrap;
  word-break:break-word;
  min-height:190px;
}
.code .t{ color:var(--syn-tag); }
.code .a{ color:var(--syn-attr); }
.code .c{ color:var(--syn-comment); }

.caret{
  display:inline-block;
  width:8px; height:16px;
  background:var(--orange);
  vertical-align:-3px;
  animation:blink 1.05s steps(1) infinite;
}
@keyframes blink{ 0%,50%{opacity:1} 51%,100%{opacity:0} }

.demo-arrow{
  display:flex; align-items:center; justify-content:center;
  color:var(--orange);
  opacity:0;
  transition:opacity .5s ease;
}
.demo-arrow.on{ opacity:1; }

.render{
  padding:30px 24px 34px;
  min-height:190px;
  opacity:0;
  transform:translateY(8px);
  transition:opacity .55s ease, transform .55s ease;
}
.render.on{ opacity:1; transform:none; }

.sr{
  position:absolute;
  width:1px; height:1px;
  padding:0; margin:-1px;
  overflow:hidden; clip-path:inset(50%);
  white-space:nowrap; border:0;
}

.r-h1{
  font-family:var(--sans);
  font-size:26px;
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.02em;
  margin:0 0 10px;
}
.r-p{
  margin:0 0 20px;
  color:var(--muted);
  font-size:16px;
}
.r-a{
  display:inline-block;
  background:var(--orange);
  color:#0d0d0d;
  font-weight:600;
  font-size:14.5px;
  padding:10px 18px;
  border-radius:7px;
}

/* ---------- bandas y secciones ---------- */
.band{
  background:var(--ink-raised);
  border-block:1px solid var(--line);
  padding:70px 0;
  margin-top:40px;
}

.section{ padding:80px 0; }
.section-alt{ background:var(--ink-raised); border-block:1px solid var(--line); }

.h2{
  font-family:var(--mono);
  font-weight:700;
  font-size:clamp(25px, 3.4vw, 38px);
  letter-spacing:-.035em;
  line-height:1.15;
  margin:0 0 16px;
}

.lead{
  font-size:17.5px;
  color:var(--muted);
  margin:0 0 16px;
  max-width:60ch;
}
.lead-wide{ margin-bottom:44px; }

/* ---------- formulario ---------- */
.form-wrap{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:start;
}

.ticks{ list-style:none; padding:0; margin:26px 0 0; }
.ticks li{
  position:relative;
  padding-left:26px;
  margin-bottom:12px;
  font-size:15.5px;
  color:var(--muted);
}
.ticks li::before{
  content:"›";
  position:absolute; left:6px; top:-1px;
  color:var(--orange);
  font-family:var(--mono);
  font-weight:700;
}

.form{
  background:var(--ink);
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:28px;
}

.field{ margin-bottom:20px; border:none; padding:0; }

/* :not(.opt) es importante: si no, esta regla le gana a .opt
   por especificidad y las opciones de radio salen en monoespaciada */
.field label:not(.opt),
.field legend{
  display:block;
  font-family:var(--mono);
  font-size:13px;
  font-weight:500;
  letter-spacing:.03em;
  color:var(--paper);
  margin-bottom:8px;
  padding:0;
}
.optional{ color:var(--muted); font-weight:400; }

.field input[type=text],
.field input[type=email],
.field textarea{
  width:100%;
  background:var(--ink-soft);
  border:1px solid var(--line);
  border-radius:8px;
  color:var(--paper);
  font-family:var(--sans);
  font-size:16px;
  padding:12px 14px;
  transition:border-color .15s ease;
}
.field input::placeholder,
.field textarea::placeholder{ color:#5d5952; }
.field input:focus,
.field textarea:focus{ border-color:var(--orange); outline:none; }
.field textarea{ resize:vertical; min-height:78px; }

.opt{
  display:flex; align-items:flex-start; gap:10px;
  font-family:var(--sans);
  font-size:15.5px;
  font-weight:400;
  color:var(--muted);
  letter-spacing:0;
  margin-bottom:9px;
  cursor:pointer;
}
.opt input{ accent-color:var(--orange); margin-top:5px; flex:none; }
.opt:hover span{ color:var(--paper); }

.hp{ position:absolute; left:-9999px; }

.form-msg{
  margin:14px 0 0;
  font-size:15px;
  min-height:1.4em;
}
.form-msg.ok{ color:var(--orange); font-weight:600; }
.form-msg.err{ color:#f87171; }

.form-fine{
  margin:14px 0 0;
  font-size:13.5px;
  color:var(--muted);
}

/* ---------- módulos ---------- */
.mods{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.mod{
  background:var(--ink-raised);
  border:1px solid var(--line);
  border-top:2px solid var(--orange);
  border-radius:var(--r);
  padding:26px 24px 28px;
  display:flex;
  flex-direction:column;
}
.mod-n{
  display:block;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--orange);
  margin-bottom:12px;
}
.mod-t{
  font-family:var(--mono);
  font-size:19px;
  font-weight:600;
  letter-spacing:-.03em;
  margin:0 0 12px;
}
.mod-d{
  margin:0 0 20px;
  font-size:15.5px;
  color:var(--muted);
}

.mod-tags{
  list-style:none;
  padding:0;
  margin:0;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.mod-tags li{
  font-family:var(--mono);
  font-size:12.5px;
  color:var(--syn-text);
  background:var(--ink-soft);
  border:1px solid var(--line);
  border-radius:999px;
  padding:5px 12px;
  line-height:1.4;
}

.mods-note{
  margin:32px 0 0;
  padding-left:18px;
  border-left:2px solid var(--line);
  font-size:15.5px;
  color:var(--muted);
  max-width:62ch;
}

/* ---------- videos ---------- */
.vids{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.vid{
  display:block;
  text-decoration:none;
  background:var(--ink);
  border:1px solid var(--line);
  border-radius:var(--r);
  overflow:hidden;
  transition:border-color .15s ease, transform .15s ease;
}
.vid:hover{ border-color:var(--orange); transform:translateY(-2px); }
.vid img{ width:100%; height:auto; aspect-ratio:16/9; object-fit:cover; }
.vid-t{
  display:block;
  font-family:var(--mono);
  font-size:15px;
  font-weight:600;
  letter-spacing:-.02em;
  padding:16px 16px 4px;
}
.vid-m{
  display:block;
  font-size:14px;
  color:var(--muted);
  padding:0 16px 18px;
}
.vids-cta{ margin:34px 0 0; }

/* ---------- sobre mí ---------- */
.about{
  display:grid;
  grid-template-columns:1.6fr 1fr;
  gap:48px;
  align-items:start;
}
.about-links{
  display:flex; flex-wrap:wrap; gap:20px;
  margin:26px 0 0;
}
.card{
  background:var(--ink-raised);
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:26px 24px;
}
.card-k{
  font-family:var(--mono);
  font-size:15px;
  font-weight:600;
  letter-spacing:-.02em;
  margin:0 0 10px;
}
.card-d{
  margin:0 0 16px;
  font-size:15px;
  color:var(--muted);
}

/* ---------- tarjeta del instructor (con foto) ---------- */
.about-card{
  background:var(--ink-raised);
  border:1px solid var(--line);
  border-top:3px solid var(--orange);
  border-radius:16px;
  padding:32px;
  text-align:center;
}
.about-photo{
  width:200px;
  aspect-ratio:1/1;
  margin:0 auto 24px;
  border-radius:50%;
  overflow:hidden;
  border:2px solid var(--line);
}
.about-photo img{
  width:100%; height:100%;
  object-fit:cover;
  display:block;
}
.about-card h3{
  font-family:var(--mono);
  font-size:24px;
  font-weight:700;
  letter-spacing:-.02em;
  margin:0;
}
.cargo{
  color:var(--orange);
  font-family:var(--mono);
  font-size:14.5px;
  font-weight:600;
  margin:8px 0 22px;
}
.about-list{
  list-style:none;
  padding:0;
  margin:0;
  text-align:left;
}
.about-list li{
  padding:11px 2px;
  border-bottom:1px solid var(--line);
  color:var(--muted);
  font-size:14.5px;
}
.about-list li:last-child{ border:none; }

/* ---------- footer ---------- */
.foot{
  border-top:1px solid var(--line);
  padding:40px 0;
}
.foot-inner{
  display:flex; align-items:center; gap:18px;
  flex-wrap:wrap;
}
.foot-mail{ margin:0; font-size:15px; }
.foot-c{
  margin:0 0 0 auto;
  font-family:var(--mono);
  font-size:13px;
  color:var(--muted);
}

.hero {
  position: relative;
  overflow: hidden;
  background-color: #0d0d0d;
}

.hero::before {
  content: '';
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(ellipse 60% 45% at 75% 25%, rgba(249,115,22,0.22), transparent 65%),
    radial-gradient(ellipse 50% 40% at 20% 70%, rgba(180,60,10,0.16), transparent 65%),
    radial-gradient(ellipse 45% 35% at 55% 90%, rgba(249,115,22,0.10), transparent 65%);
  filter: blur(60px);
  pointer-events: none;
  transform: translate(var(--mx, 0px), var(--my, 0px)) scale(1.1);
  transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.hero .shell {
  position: relative;
  z-index: 1;
}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .demo{ grid-template-columns:1fr; }
  .demo-arrow{ transform:rotate(90deg); height:34px; }
  .form-wrap{ grid-template-columns:1fr; gap:36px; }
  .mods{ grid-template-columns:1fr; }
  .vids{ grid-template-columns:repeat(2,1fr); }
  .about{ grid-template-columns:1fr; gap:32px; }
}

@media (max-width:600px){
  body{ font-size:16px; }
  .hero{ padding:48px 0 30px; }
  .hero-actions{ margin-bottom:44px; }
  .btn-lg{ width:100%; text-align:center; }
  .section{ padding:60px 0; }
  .band{ padding:56px 0; }
  .vids{ grid-template-columns:1fr; }
  .form{ padding:22px 18px; }
  .foot-c{ margin-left:0; width:100%; }
}

@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .caret{ display:none; }
}