/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-2: #eef2f8;
  --ink: #16233a;
  --ink-soft: #45526b;
  --muted: #7c879c;
  --border: rgba(22,35,58,0.12);
  --border-strong: rgba(22,35,58,0.22);

  --blue: #1d4a8f;
  --blue-deep: #12335f;
  --blue-soft: rgba(29,74,143,0.08);
  --red: #c8283e;
  --red-soft: rgba(200,40,62,0.10);

  --serif: "Newsreader", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.25, 0.46, 0.45, 0.94);

  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --radius: 18px;
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; tab-size: 2; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}
img, svg, video { display: block; max-width: 100%; }
img { height: auto; border-radius: var(--radius); }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 500; text-wrap: balance; line-height: 1.08; letter-spacing: -0.01em; }
::selection { background: var(--blue); color: #fff; }

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

/* =============================================================
   3. Utilities
   ============================================================= */
.container { max-width: 1160px; margin: 0 auto; padding-inline: var(--gutter); }
.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem; background: var(--blue-deep); color: #fff;
  z-index: 9999; border-radius: 8px; font-weight: 500;
}
.skip-link:focus { top: 1rem; }
.hl { color: var(--blue); font-style: italic; }

/* =============================================================
   4. Typography
   ============================================================= */
.kicker, .section-kicker {
  font-family: var(--sans);
  font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--red); font-weight: 600; margin-bottom: 0.9rem;
}
.section-title { font-size: clamp(1.7rem, 3.4vw, 2.5rem); margin-bottom: 1.1rem; }
.section-title em { color: var(--blue); font-style: italic; }

/* =============================================================
   5. Components
   ============================================================= */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.85rem 1.5rem; border-radius: 999px;
  font-size: 0.95rem; font-weight: 600;
  transition: transform .3s var(--ease-out), background .3s var(--ease-out), color .3s var(--ease-out), box-shadow .3s var(--ease-out);
}
.btn-primary { background: var(--blue); color: #fff; box-shadow: 0 10px 24px -12px rgba(29,74,143,0.55); }
.btn-primary:hover { background: var(--blue-deep); transform: translateY(-2px); }
.btn-ghost { border: 1.5px solid var(--border-strong); color: var(--ink); }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); transform: translateY(-2px); }

/* Splash */
.splash {
  position: fixed; inset: 0; z-index: 10000;
  display: flex; align-items: center; justify-content: center;
  background: var(--blue-deep);
  transition: opacity .6s var(--ease-out), visibility .6s var(--ease-out);
}
.splash-mark { font-family: var(--serif); font-style: italic; font-size: 2rem; color: #fff; letter-spacing: 0.02em; }
.is-ready .splash { opacity: 0; visibility: hidden; pointer-events: none; }
.no-js .splash { display: none; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 500;
  background: rgba(246,248,251,0.85); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding-block: 1.1rem; }
.nav-logo { font-family: var(--serif); font-style: italic; font-size: 1.1rem; color: var(--blue-deep); }
.nav-links { display: flex; align-items: center; gap: 1.8rem; font-size: 0.92rem; font-weight: 500; }
.nav-links a:not(.nav-cta) { color: var(--ink-soft); transition: color .25s var(--ease-out); }
.nav-links a:not(.nav-cta):hover { color: var(--blue); }
.nav-cta { padding: 0.55rem 1.2rem; border-radius: 999px; background: var(--blue); color: #fff; }
.nav-toggle { display: none; flex-direction: column; gap: 4px; padding: 0.4rem; }
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; }

/* =============================================================
   6. Sections
   ============================================================= */

/* Hero */
.hero { padding-block: clamp(3rem, 8vw, 6rem) clamp(2rem, 6vw, 4rem); }
.hero-grid { display: grid; gap: 2.5rem; align-items: center; }
.hero-title { font-size: clamp(2.4rem, 6vw, 3.6rem); margin-bottom: 1rem; color: var(--blue-deep); }
.hero-role { font-size: 1.08rem; color: var(--ink-soft); margin-bottom: 1rem; font-weight: 500; }
.hero-sub { color: var(--muted); max-width: 52ch; margin-bottom: 1.8rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; }
.hero-media img { width: 100%; aspect-ratio: 3/2; object-fit: cover; box-shadow: 0 30px 60px -30px rgba(18,51,95,0.35); }

/* Stats */
.stats { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--surface); }
.stats-grid { display: grid; gap: 2rem; padding-block: 2.4rem; }
.stat-item { text-align: center; }
.stat-value, .stat-suffix { font-family: var(--serif); font-size: clamp(2rem, 5vw, 2.8rem); color: var(--blue); }
.stat-label { color: var(--muted); font-size: 0.88rem; margin-top: 0.3rem; }

/* About */
.about { padding-block: clamp(3.5rem, 8vw, 6rem); }
.about-grid { display: grid; gap: 2.5rem; align-items: center; }
.about-media img { aspect-ratio: 1/1; object-fit: cover; width: 100%; max-width: 340px; }
.about-copy p { color: var(--ink-soft); margin-bottom: 1rem; max-width: 58ch; }
.about-copy p:last-child { margin-bottom: 0; }

/* Timeline */
.timeline { padding-block: clamp(3.5rem, 8vw, 6rem); background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.timeline-list { margin-top: 2.2rem; display: flex; flex-direction: column; gap: 0; position: relative; }
.timeline-item { display: grid; grid-template-columns: 20px 1fr; gap: 1.4rem; padding-bottom: 2.4rem; position: relative; }
.timeline-item::before {
  content: ""; position: absolute; left: 9px; top: 22px; bottom: -4px; width: 2px;
  background: var(--border-strong);
}
.timeline-item:last-child::before { display: none; }
.timeline-marker { width: 20px; height: 20px; border-radius: 50%; background: var(--surface); border: 3px solid var(--blue); margin-top: 2px; }
.timeline-date { display: inline-block; font-size: 0.8rem; font-weight: 600; color: var(--red); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 0.4rem; }
.timeline-body h3 { font-size: 1.2rem; margin-bottom: 0.5rem; color: var(--blue-deep); }
.timeline-body p { color: var(--ink-soft); max-width: 62ch; }
.timeline-tags { list-style: none; display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.8rem; }
.timeline-tags li { font-size: 0.8rem; padding: 0.3rem 0.7rem; border-radius: 999px; background: var(--blue-soft); color: var(--blue-deep); font-weight: 500; }

/* Talks: infografía por categorías */
.talks { padding-block: clamp(3.5rem, 8vw, 6rem); }
.talks-lede { color: var(--muted); max-width: 58ch; font-size: 1.02rem; margin-top: -0.4rem; }
.talk-categories { margin-top: 2.4rem; display: grid; gap: 1.3rem; grid-template-columns: 1fr; }
.talk-category {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.8rem; transition: transform .3s var(--ease-out), box-shadow .3s var(--ease-out), border-color .3s var(--ease-out);
}
.talk-category:hover { transform: translateY(-3px); box-shadow: 0 20px 40px -28px rgba(18,51,95,0.35); border-color: var(--border-strong); }
.talk-cat-head { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.1rem; }
.talk-cat-icon {
  width: 44px; height: 44px; flex-shrink: 0; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--blue-soft); color: var(--blue);
}
.talk-cat-icon svg { width: 23px; height: 23px; }
.talk-cat-count { font-family: var(--serif); font-weight: 600; font-size: 1.9rem; color: var(--blue); line-height: 1; }
.talk-category h3 { font-size: 1.08rem; margin-bottom: 0.9rem; color: var(--blue-deep); line-height: 1.3; }
.talk-cat-examples { list-style: none; display: flex; flex-direction: column; gap: 0.55rem; border-top: 1px solid var(--border); padding: 0.9rem 0 0; margin: 0; }
.talk-cat-examples li { color: var(--muted); font-size: 0.88rem; line-height: 1.5; }
.talk-cat-examples strong { color: var(--ink); font-weight: 600; }

/* Credentials */
.credentials { padding-block: clamp(3.5rem, 8vw, 6rem); background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.credentials-grid { display: grid; gap: 2.5rem; }
.credentials-copy p { color: var(--ink-soft); max-width: 56ch; margin-bottom: 1.6rem; }
.credentials-list { display: flex; flex-direction: column; gap: 1.1rem; }
.credential-row strong { display: block; color: var(--blue-deep); font-size: 1rem; margin-bottom: 0.2rem; }
.credential-row span { color: var(--muted); font-size: 0.88rem; }
.credentials-panel { display: flex; flex-direction: column; gap: 1.2rem; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.6rem; }
.badge-row { display: flex; gap: 0.9rem; align-items: flex-start; }
.badge-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--red); margin-top: 0.4rem; flex-shrink: 0; }
.badge-row strong { display: block; color: var(--blue-deep); font-size: 0.95rem; }
.badge-row p { color: var(--muted); font-size: 0.86rem; margin-top: 0.15rem; }

/* Contact */
.contact { padding-block: clamp(4rem, 10vw, 7rem); text-align: center; }
.contact-title { font-size: clamp(1.6rem, 3.6vw, 2.3rem); max-width: 34ch; margin: 0 auto 0.9rem; color: var(--blue-deep); }
.contact-sub { color: var(--muted); margin-bottom: 1.6rem; }
.contact-email { font-family: var(--serif); font-style: italic; font-size: clamp(1.3rem, 3vw, 1.7rem); color: var(--blue); border-bottom: 2px solid var(--red); padding-bottom: 0.2rem; transition: color .25s var(--ease-out); }
.contact-email:hover { color: var(--red); }
.contact-links { margin-top: 1.6rem; display: flex; flex-wrap: wrap; justify-content: center; gap: 1.6rem; font-size: 0.92rem; color: var(--ink-soft); font-weight: 500; }
.contact-links a { border-bottom: 1px solid transparent; transition: border-color .25s var(--ease-out), color .25s var(--ease-out); }
.contact-links a:hover { color: var(--blue); border-color: var(--blue); }

/* Footer */
.footer { border-top: 1px solid var(--border); padding-block: 1.8rem; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.6rem; font-size: 0.85rem; color: var(--muted); }

/* =============================================================
   7. Effects
   ============================================================= */
[data-reveal] { opacity: 1; transform: none; }
.js-reveal-ready [data-reveal] { opacity: 0; transform: translateY(28px); }
.js-reveal-ready [data-reveal].is-revealed { opacity: 1; transform: none; transition: opacity .9s var(--ease-soft), transform .9s var(--ease-soft); }

/* =============================================================
   8. Responsive
   ============================================================= */
@media (min-width: 720px) {
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; }
  .about-grid { grid-template-columns: 0.8fr 1.2fr; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
  .talk-categories { grid-template-columns: repeat(2, 1fr); }
  .credentials-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 719px) {
  .nav-links {
    position: fixed; inset: 64px 0 auto 0; flex-direction: column; align-items: flex-start;
    background: var(--bg); border-bottom: 1px solid var(--border);
    padding: 1.2rem var(--gutter) 1.6rem; gap: 1rem;
    transform: translateY(-8px); opacity: 0; visibility: hidden;
    transition: opacity .25s var(--ease-out), transform .25s var(--ease-out), visibility .25s;
  }
  .nav-links.is-open { opacity: 1; transform: none; visibility: visible; }
  .nav-toggle { display: flex; }
  .nav-cta { align-self: flex-start; }
}
@media (min-width: 720px) { .nav-toggle { display: none; } .nav-links { position: static; opacity: 1; visibility: visible; transform: none; flex-direction: row; background: none; border: 0; padding: 0; } }

/* =============================================================
   9. Reduced motion — only intrusive effects
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js-reveal-ready [data-reveal] { opacity: 1; transform: none; transition: none; }
  .splash { transition: none; }
}