/* =====================================================
   EXPOTECH 2026 — Design tokens
   ===================================================== */
:root{
  --ink: #14171C;
  --ink-soft: #1D212B;
  --paper: #F5F1E8;
  --paper-dim: #E8E2D4;
  --signal: #FF5A36;
  --signal-dark: #D8431F;
  --circuit: #2FA88A;
  --muted: #8B93A1;
  --muted-dark: #5B6472;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --radius: 18px;
  --container: 1180px;
}

*{ margin:0; padding:0; box-sizing:border-box; }

html{ scroll-behavior:smooth; }

body{
  font-family: var(--font-body);
  background: var(--ink);
  color: var(--paper);
  line-height: 1.5;
  overflow-x: hidden;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; }
button{ font-family:inherit; cursor:pointer; border:none; }

h1,h2,h3{ font-family: var(--font-display); line-height:1.1; }

.eyebrow{
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing:.06em;
  text-transform: uppercase;
  color: var(--circuit);
  display:flex; align-items:center; gap:8px;
  margin-bottom: 14px;
}

/* =====================================================
   HEADER
   ===================================================== */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: rgba(20,23,28,.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(245,241,232,.08);
}
.header-inner{
  max-width: var(--container);
  margin:0 auto;
  padding: 14px 24px;
  display:flex; align-items:center; justify-content:space-between;
  gap: 20px;
}
.brand{ display:flex; align-items:center; gap:10px; }
.brand-badge{
  width:38px; height:38px; border-radius:10px;
  background: var(--signal);
  display:flex; align-items:center; justify-content:center;
  font-size: 1.1rem; color: var(--ink); flex-shrink:0;
}
.brand-text{
  font-family: var(--font-display);
  font-weight:700; font-size:1.15rem; letter-spacing:-.01em;
}
.brand-text em{ font-style:normal; color: var(--signal); }

.main-nav{ display:flex; gap: 28px; }
.nav-link{
  font-size:.92rem; font-weight:500; color: var(--paper);
  opacity:.8; position:relative; padding: 4px 0;
  transition: opacity .2s ease;
}
.nav-link:hover{ opacity:1; }
.nav-link::after{
  content:''; position:absolute; left:0; bottom:-2px;
  width:0; height:2px; background: var(--circuit);
  transition: width .25s ease;
}
.nav-link:hover::after{ width:100%; }

.btn-inscribir-nav{
  background: transparent;
  border: 1px solid rgba(245,241,232,.3) !important;
  color: var(--paper);
  padding: 9px 20px;
  border-radius: 999px;
  font-size:.88rem; font-weight:600;
  transition: all .2s ease;
}
.btn-inscribir-nav:hover{ background: var(--paper); color: var(--ink); }

.hamburger{
  display:none; flex-direction:column; gap:5px;
  background:none; width:28px;
}
.hamburger span{
  display:block; height:2px; width:100%; background: var(--paper);
  transition: transform .25s ease, opacity .25s ease;
}
.hamburger.active span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2){ opacity:0; }
.hamburger.active span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* =====================================================
   BUTTONS
   ===================================================== */
.btn-primary{
  background: var(--signal);
  color: var(--ink);
  font-weight: 700;
  font-size: .95rem;
  padding: 14px 28px;
  border-radius: 999px;
  display:inline-flex; align-items:center; gap:10px;
  transition: transform .2s ease, background .2s ease;
}
.btn-primary:hover{ background: var(--signal-dark); transform: translateY(-2px); }
.btn-full{ width:100%; justify-content:center; }

.btn-ghost{
  display:inline-flex; align-items:center; gap:8px;
  font-weight:600; font-size:.95rem; color: var(--paper);
  border-bottom: 1px solid rgba(245,241,232,.3);
  padding-bottom: 4px;
}
.btn-ghost:hover{ border-color: var(--circuit); color: var(--circuit); }

/* =====================================================
   HERO
   ===================================================== */
.hero{
  max-width: var(--container);
  margin: 0 auto;
  padding: 70px 24px 100px;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 50px;
  align-items:center;
}
.hero h1{
  font-size: clamp(2.4rem, 4.2vw, 3.6rem);
  font-weight:700; letter-spacing:-.02em;
  margin-bottom: 22px;
}
.hero h1 span{ color: var(--signal); }
.hero-desc{
  color: var(--muted);
  font-size:1.05rem;
  max-width: 480px;
  margin-bottom: 30px;
}
.hero-meta{
  display:flex; flex-wrap:wrap; gap:12px;
  margin-bottom: 34px;
}
.meta-chip{
  font-family: var(--font-mono);
  font-size:.8rem;
  border: 1px solid rgba(245,241,232,.15);
  padding: 8px 14px;
  border-radius: 999px;
  display:flex; align-items:center; gap:8px;
  color: var(--paper);
}
.hero-actions{ display:flex; align-items:center; gap:28px; flex-wrap:wrap; }

/* --- Hero visual: stamp badge --- */
.hero-visual{
  position: relative;
  display:flex; align-items:center; justify-content:center;
  min-height: 380px;
}
.stamp-card{
  width: 280px; height: 280px; border-radius:50%;
  background: var(--ink-soft);
  border: 2px dashed rgba(245,241,232,.25);
  display:flex; align-items:center; justify-content:center;
  position:relative;
}
.stamp-ring{
  position:absolute; inset:0; border-radius:50%;
  background: repeating-conic-gradient(
    var(--circuit) 0deg 4deg,
    transparent 4deg 18deg
  );
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 14px), #000 calc(100% - 12px));
          mask: radial-gradient(farthest-side, transparent calc(100% - 14px), #000 calc(100% - 12px));
  animation: spin 30s linear infinite;
}
@keyframes spin{ from{ transform: rotate(0deg);} to{ transform: rotate(360deg);} }

.stamp-caption{
  position:absolute; bottom: -6px; left:50%; transform: translateX(-50%);
  font-family: var(--font-mono); font-size:.7rem; letter-spacing:.15em;
  color: var(--muted); white-space:nowrap;
}

.stamp-center{
  width: 190px; height:190px; border-radius:50%;
  background: var(--signal);
  color: var(--ink);
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  text-align:center;
}
.stamp-num{ font-family:var(--font-display); font-size:3rem; font-weight:700; line-height:1; }
.stamp-label{ font-family:var(--font-mono); font-size:.65rem; letter-spacing:.1em; margin-top:6px; }

.floating-card{
  position:absolute;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size:.78rem; font-weight:600;
  padding: 10px 16px;
  border-radius: 12px;
  display:flex; align-items:center; gap:8px;
  box-shadow: 0 12px 24px rgba(0,0,0,.35);
}
.card-1{ top: 6%; right: -4%; }
.card-2{ bottom: 12%; left: -8%; }
.card-3{ bottom: -2%; right: 8%; }

/* =====================================================
   PONENTES
   ===================================================== */
.ponentes{
  background: var(--paper);
  color: var(--ink);
  padding: 90px 24px;
}
.section-head{
  max-width: var(--container);
  margin: 0 auto 50px;
  text-align:center;
}
.section-head .eyebrow{ justify-content:center; }
.section-head h2{ font-size: clamp(1.9rem, 3vw, 2.6rem); margin-bottom: 14px; }
.section-sub{ color: var(--muted-dark); max-width: 560px; margin: 0 auto; }

.badges-row{
  max-width: var(--container);
  margin: 0 auto;
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.badge-card{
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  overflow:hidden;
  position:relative;
  transition: transform .25s ease;
}
.badge-card:hover{ transform: translateY(-6px); }

.badge-perforation{
  height: 14px;
  background-image: radial-gradient(circle, var(--paper) 4px, transparent 4px);
  background-size: 20px 14px;
  background-position: center;
  background-color: var(--ink);
}
.badge-photo{ height: 220px; overflow:hidden; }
.badge-photo img{ width:100%; height:100%; object-fit:cover; }

.badge-body{ padding: 24px; }
.badge-code{
  font-family: var(--font-mono);
  font-size:.72rem; letter-spacing:.08em;
  color: var(--signal);
}
.badge-body h3{ font-size:1.3rem; margin: 8px 0 4px; }
.badge-role{ font-size:.85rem; color: var(--circuit); font-weight:600; margin-bottom: 12px; }
.badge-desc{ font-size:.9rem; color: var(--muted); margin-bottom: 18px; }
.badge-socials{ display:flex; gap:14px; font-size:1.1rem; }
.badge-socials a{ opacity:.75; transition: opacity .2s ease, color .2s ease; }
.badge-socials a:hover{ opacity:1; color: var(--signal); }

/* =====================================================
   INSCRIPCION
   ===================================================== */
.inscripcion{ padding: 100px 24px; }
.inscripcion-grid{
  max-width: var(--container);
  margin:0 auto;
  display:grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 60px;
  align-items:start;
}
.inscripcion-info h2{ font-size: clamp(1.9rem,3vw,2.5rem); margin-bottom: 16px; }
.inscripcion-checklist{ margin-top: 26px; display:flex; flex-direction:column; gap:12px; }
.inscripcion-checklist li{ display:flex; align-items:center; gap:10px; color: var(--paper); font-size:.95rem; }
.inscripcion-checklist i{ color: var(--circuit); }

.ticket-form{
  background: var(--paper);
  color: var(--ink);
  border-radius: var(--radius);
  padding: 40px;
  position: relative;
}
.ticket-form-notch{
  position:absolute; top:50%; left:-14px; transform: translateY(-50%);
  width:28px; height:28px; border-radius:50%;
  background: var(--ink);
}
.form-group{ margin-bottom: 20px; }
.form-group label{
  display:block; font-size:.82rem; font-weight:600;
  margin-bottom: 8px; color: var(--muted-dark);
}
.form-group input, .form-group select{
  width:100%;
  padding: 13px 16px;
  border-radius: 10px;
  border: 1.5px solid var(--paper-dim);
  background: #fff;
  font-family: var(--font-body);
  font-size: .95rem;
  color: var(--ink);
  transition: border-color .2s ease;
}
.form-group input:focus, .form-group select:focus{
  outline:none; border-color: var(--circuit);
}
.form-group input.invalid, .form-group select.invalid{ border-color: var(--signal); }
.error-msg{
  display:block; font-size:.78rem; color: var(--signal-dark);
  margin-top: 6px; min-height: 14px; font-weight:600;
}

/* =====================================================
   FOOTER
   ===================================================== */
.site-footer{
  background: var(--ink-soft);
  padding: 70px 24px 0;
  border-top: 1px solid rgba(245,241,232,.08);
}
.footer-grid{
  max-width: var(--container);
  margin:0 auto;
  display:grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
}
.footer-brand p{ margin-top:14px; color: var(--muted); font-size:.88rem; max-width: 280px; }
.footer-col h4{ font-family: var(--font-display); margin-bottom:16px; font-size:1rem; }
.footer-col p{ font-size:.88rem; color: var(--muted); margin-bottom:10px; display:flex; gap:8px; align-items:center; }
.footer-socials{ display:flex; gap:14px; font-size:1.2rem; }
.footer-socials a{ opacity:.8; transition: opacity .2s ease, color .2s ease; }
.footer-socials a:hover{ opacity:1; color: var(--signal); }

.footer-bottom{
  border-top: 1px solid rgba(245,241,232,.08);
  padding: 20px 0;
  text-align:center;
  font-size:.8rem;
  color: var(--muted);
  max-width: var(--container);
  margin: 0 auto;
}

/* =====================================================
   RESPONSIVE — Tablet
   ===================================================== */
@media (max-width: 1024px){
  .hero-grid{ grid-template-columns: 1fr; }
  .hero-visual{ order:-1; min-height: 300px; }
  .badges-row{ grid-template-columns: repeat(2, 1fr); }
  .inscripcion-grid{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
}

/* =====================================================
   RESPONSIVE — Mobile
   ===================================================== */
@media (max-width: 720px){
  .main-nav{
    position: fixed; top: 66px; left:0; right:0;
    background: var(--ink-soft);
    flex-direction:column; padding: 20px 24px; gap: 18px;
    transform: translateY(-140%);
    transition: transform .3s ease;
    border-bottom: 1px solid rgba(245,241,232,.1);
  }
  .main-nav.open{ transform: translateY(0); }
  .btn-inscribir-nav{ display:none; }
  .hamburger{ display:flex; }

  .badges-row{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; }
  .ticket-form{ padding: 28px 22px; }
  .ticket-form-notch{ display:none; }
  .hero{ padding: 50px 20px 70px; }
  .hero-actions{ flex-direction:column; align-items:flex-start; gap:18px; }
}