/* ============================================================
   Héctor Guzmán (arquitechthor) — arquitechthor.github.io
   Misma paleta que kopi-web y aws-cert-study (derivada de la
   mascota de Kopi: cian, violeta y magenta sobre azul casi negro)
   para que los tres sitios se sientan de la misma familia.
   ============================================================ */

:root {
  --bg: #070a14;
  --bg-alt: #0b0f20;
  --surface: #10142a;
  --surface-2: #161b38;
  --border: rgba(148, 163, 184, 0.14);
  --border-strong: rgba(148, 163, 184, 0.28);
  --text: #f1f5f9;
  --text-muted: #a3adc2;
  --text-faint: #6b7490;

  --cyan: #22d3ee;
  --cyan-strong: #67e8f9;
  --violet: #a855f7;
  --violet-strong: #c084fc;
  --magenta: #fb7185;

  --gradient-brand: linear-gradient(135deg, var(--cyan) 0%, var(--violet) 55%, var(--magenta) 100%);
  --gradient-radial: radial-gradient(circle at 30% 20%, rgba(34, 211, 238, 0.18), transparent 45%),
                     radial-gradient(circle at 80% 0%, rgba(168, 85, 247, 0.16), transparent 40%),
                     radial-gradient(circle at 60% 80%, rgba(251, 113, 133, 0.10), transparent 45%);

  --shadow-glow: 0 0 0 1px var(--border), 0 20px 60px -20px rgba(34, 211, 238, 0.25);
  --radius: 16px;
  --radius-sm: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--cyan-strong); text-decoration: none; }
a:hover { text-decoration: underline; }

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

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 560px) { .container { padding: 0 16px; } }

section { padding: 96px 0; position: relative; scroll-margin-top: 60px; }
section + section { border-top: 1px solid var(--border); }
section:nth-of-type(even) { background: var(--bg-alt); }

.eyebrow {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan-strong);
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.25);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}

h1, h2, h3 { line-height: 1.15; margin: 0 0 16px; font-weight: 800; letter-spacing: -0.01em; }
h2 { font-size: clamp(26px, 3.4vw, 36px); }
h3 { font-size: 19px; }
p { color: var(--text-muted); margin: 0 0 16px; }

.section-head { max-width: 640px; margin: 0 auto 52px; text-align: center; }
.section-head p { font-size: 16px; }

.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ── Nav ─────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(7, 10, 20, 0.82);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: 1120px;
  margin: 0 auto;
}
.nav-brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 15px; color: var(--text); }
.nav-brand:hover { text-decoration: none; }
.nav-avatar { width: 32px; height: 32px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a { color: var(--text-muted); font-size: 14px; font-weight: 500; }
.nav-links a:hover, .nav-links a[aria-current] { color: var(--text); text-decoration: none; }
.nav-toggle { display: none; }

@media (max-width: 760px) {
  .nav-inner { padding: 12px 16px; }
  .nav-links { display: none; }
  .nav-links.nav-links-open {
    display: flex; flex-direction: column; align-items: flex-start; gap: 14px;
    position: absolute; top: 58px; right: 16px;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 12px; padding: 16px 20px;
  }
  .nav-toggle {
    display: inline-flex; background: none; border: 1px solid var(--border-strong);
    color: var(--text); border-radius: 8px; padding: 8px 10px; cursor: pointer;
  }
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px; border-radius: 10px; font-size: 14.5px; font-weight: 700;
  border: 1px solid transparent; cursor: pointer; white-space: nowrap;
  transition: transform .15s ease, box-shadow .15s ease, opacity .15s ease;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: var(--gradient-brand); color: #04060c;
  box-shadow: 0 10px 30px -10px rgba(34, 211, 238, 0.5);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 14px 34px -10px rgba(168, 85, 247, 0.55); }
.btn-secondary {
  background: var(--surface-2); color: var(--text); border-color: var(--border-strong);
}
.btn-secondary:hover { border-color: var(--cyan); }
.btn-sm { padding: 8px 14px; font-size: 13px; }

/* ── Hero / Sobre mí ─────────────────────────────────────── */
.hero {
  padding: 88px 0 80px;
  background: var(--gradient-radial), var(--bg);
}
.about-grid { display: grid; grid-template-columns: 280px 1fr; gap: 48px; align-items: center; }
.about-photo { position: relative; width: 240px; height: 240px; margin: 0 auto; }
.about-photo::before {
  content: ""; position: absolute; inset: -12%;
  background: var(--gradient-brand); filter: blur(70px); opacity: 0.25; border-radius: 50%;
}
.about-photo img {
  position: relative; width: 240px; height: 240px; border-radius: 50%; object-fit: cover;
  border: 3px solid transparent;
  background: linear-gradient(var(--bg), var(--bg)) padding-box, var(--gradient-brand) border-box;
}
.hero h1 { font-size: clamp(38px, 5.5vw, 58px); }
.hero-sub { font-size: 20px; color: var(--text); font-weight: 600; margin-bottom: 14px; }
.hero-desc { font-size: 16.5px; max-width: 620px; }
.about-links { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 22px; }

@media (max-width: 760px) {
  .about-grid { grid-template-columns: 1fr; text-align: center; gap: 32px; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .about-links { justify-content: center; }
}

/* ── Proyectos (Kopi Tools / Apuntes AWS) ────────────────── */
.project {
  display: grid; grid-template-columns: 1fr 0.8fr; gap: 56px; align-items: center;
}
.project-visual { display: flex; justify-content: center; }
.project-visual img {
  width: 100%; max-width: 360px; height: auto; aspect-ratio: 1 / 1; object-fit: cover;
  border-radius: 28px; box-shadow: var(--shadow-glow);
}
.project-points { list-style: none; padding: 0; margin: 0 0 24px; display: grid; gap: 10px; }
.project-points li { color: var(--text-muted); font-size: 15px; padding-left: 26px; position: relative; }
.project-points li::before {
  content: "▸"; position: absolute; left: 4px; color: var(--cyan-strong);
}
.project-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Tarjeta de las certificaciones que cubre aws-cert-study, en lugar de una imagen. */
.cert-codes {
  width: 100%; max-width: 360px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
}
.cert-code {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px 16px; text-align: center;
}
.cert-code strong {
  display: block; font-size: 22px; font-weight: 800; line-height: 1.1; margin-bottom: 6px;
  background: var(--gradient-brand); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.cert-code span { font-size: 12.5px; color: var(--text-muted); }

@media (max-width: 860px) {
  .project { grid-template-columns: 1fr; gap: 36px; }
  .project-visual { order: -1; }
  .project-visual img { max-width: 260px; }
}

/* ── Certificaciones ─────────────────────────────────────── */
.grid { display: grid; gap: 20px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 960px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .grid-4 { grid-template-columns: 1fr; } }

.badge-card {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px 20px; color: var(--text);
  transition: border-color .15s ease, transform .15s ease;
}
.badge-card:hover { border-color: var(--cyan); transform: translateY(-2px); text-decoration: none; }
.badge-card img { width: 120px; height: 120px; object-fit: contain; margin-bottom: 18px; }
.badge-card h3 { font-size: 16px; margin-bottom: 6px; }
.badge-issuer { font-size: 13px; color: var(--text-muted); margin: 0 0 12px; }
.badge-kind {
  font-size: 11.5px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--violet-strong); margin-bottom: 8px;
}
.badge-dates { font-size: 12.5px; color: var(--text-faint); margin: auto 0 0; }
.badges-foot { text-align: center; margin-top: 36px; }

/* ── Footer ──────────────────────────────────────────────── */
footer { padding: 40px 0; border-top: 1px solid var(--border); }
footer .container { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer-brand { font-size: 13.5px; color: var(--text-faint); }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { font-size: 13.5px; color: var(--text-muted); }
/* Línea común de webs al final del pie (igual en kopi-web, aws-cert-study y arquitechthor.github.io) */
.footer-sitios {
  flex-basis: 100%; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px;
  margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border); font-size: 13.5px;
}
.footer-sitios a { color: var(--text-muted); }
.footer-sitios a + a::before { content: "·"; display: inline-block; margin-right: 12px; color: var(--text-faint); }
.footer-sitios a[aria-current] { color: var(--text); font-weight: 600; }