/* ============================================
   BuCode — Bryan Orellana | Sitio principal
   ============================================ */
:root {
  --bg:        #0c0c11;
  --bg-2:      #121219;
  --line:      rgba(255,255,255,0.09);
  --line-2:    rgba(255,255,255,0.16);
  --text:      #ecebf3;
  --text-2:    #a3a2b5;
  --text-3:    #75748a;
  --accent:    #7c6fff;
  --accent-2:  #9187ff;
  --ok:        #3fbf8f;
  --error:     #e36b6b;
  --radius:    6px;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'DM Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  font-family: var(--font-body); font-size: 17px; line-height: 1.65;
  background: var(--bg); color: var(--text);
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
a { color: inherit; }
:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 3px; }
.container { max-width: 1080px; margin: 0 auto; padding: 0 28px; }

/* ---- Botones ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 46px; padding: 0 22px; border-radius: var(--radius);
  font-family: var(--font-body); font-size: 0.95rem; font-weight: 500;
  text-decoration: none; cursor: pointer; border: 1px solid transparent;
  transition: background .15s, border-color .15s, color .15s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-2); }
.btn-primary:disabled { opacity: .65; cursor: default; }
.btn-secondary { border-color: var(--line-2); color: var(--text); background: transparent; }
.btn-secondary:hover { border-color: rgba(255,255,255,0.35); }
.btn-block { width: 100%; }

/* ---- Navegación ---- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: rgba(12,12,17,0.82); backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent; transition: border-color .2s;
}
.nav.scrolled { border-bottom-color: var(--line); }
.nav-inner { height: 68px; display: flex; align-items: center; justify-content: space-between; }
.logo {
  font-family: var(--font-display); font-size: 1.35rem; font-weight: 700;
  text-decoration: none; color: var(--text); letter-spacing: -0.01em;
}
.logo span { color: var(--accent-2); }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { text-decoration: none; font-size: 0.93rem; color: var(--text-2); transition: color .15s; }
.nav-links a:hover { color: var(--text); }
.nav-links .nav-cta {
  color: var(--text); border: 1px solid var(--line-2); border-radius: var(--radius);
  padding: 8px 16px;
}
.nav-links .nav-cta:hover { border-color: rgba(255,255,255,0.35); }
.nav-toggle { display: none; width: 40px; height: 40px; background: none; border: 0; cursor: pointer; position: relative; }
.nav-toggle span { position: absolute; left: 10px; right: 10px; height: 2px; background: var(--text); transition: transform .2s, top .2s; }
.nav-toggle span:first-child { top: 15px; }
.nav-toggle span:last-child { top: 23px; }
.nav-toggle.open span:first-child { top: 19px; transform: rotate(45deg); }
.nav-toggle.open span:last-child { top: 19px; transform: rotate(-45deg); }

/* ---- Hero ---- */
.hero { padding: 188px 0 120px; border-bottom: 1px solid var(--line); }
.hero-kicker { color: var(--text-2); font-size: 1rem; margin-bottom: 20px; }
.hero h1 {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(2.5rem, 6vw, 4.4rem); line-height: 1.05; letter-spacing: -0.03em;
  max-width: 13ch;
}
.hero-lead { margin-top: 28px; max-width: 34em; color: var(--text-2); font-size: 1.15rem; }
.hero-actions { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 12px; }

/* ---- Secciones ---- */
.section { padding: 104px 0; border-bottom: 1px solid var(--line); }
.section-head { display: grid; grid-template-columns: 1fr 1.4fr; gap: 40px; align-items: baseline; margin-bottom: 56px; }
.section-head h2, .contact-text h2 {
  font-family: var(--font-display); font-weight: 600; font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  letter-spacing: -0.02em; line-height: 1.15;
}
.section-head p { color: var(--text-2); max-width: 36em; }

/* Servicios */
.services { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); }
.service { padding: 32px 40px 36px 0; border-bottom: 1px solid var(--line); }
.service:nth-child(even) { padding: 32px 0 36px 40px; border-left: 1px solid var(--line); }
.service h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.25rem; letter-spacing: -0.01em; margin-bottom: 8px; }
.service p { color: var(--text-2); max-width: 30em; }

/* Proyectos */
.projects { border-top: 1px solid var(--line); }
.project {
  display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center;
  padding: 40px 0; border-bottom: 1px solid var(--line);
}
.project-type { color: var(--text-3); font-size: 0.9rem; margin-bottom: 6px; }
.project h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.6rem; letter-spacing: -0.02em; margin-bottom: 10px; }
.project-body > p:not(.project-type) { color: var(--text-2); max-width: 38em; }
.project-body .project-note { margin-top: 12px; font-size: 0.9rem; color: var(--text-3); }
.project-note strong { color: var(--text-2); font-weight: 500; }
.project-links { display: flex; gap: 10px; }

/* Sobre mí */
.about .section-head { display: block; margin-bottom: 0; }
.about { display: grid; grid-template-columns: 1fr 1.4fr; gap: 40px; }
.about-text p { color: var(--text-2); max-width: 36em; }
.about-text p + p { margin-top: 16px; }
.about-text .about-stack { color: var(--text); }
.principles { grid-column: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 28px 40px; margin-top: 24px; padding-top: 32px; border-top: 1px solid var(--line); }
.principles dt { font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; margin-bottom: 4px; }
.principles dd { color: var(--text-2); font-size: 0.95rem; }

/* Contacto */
.contact { border-bottom: 0; }
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 72px; align-items: start; }
.contact-text p { color: var(--text-2); margin-top: 16px; max-width: 26em; }
.contact-text .contact-mail { font-size: 0.95rem; }
.contact-mail a { color: var(--text); text-decoration-color: var(--accent); text-underline-offset: 3px; }
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-group label { display: block; font-size: 0.9rem; color: var(--text-2); margin-bottom: 8px; }
.form-group input, .form-group textarea {
  width: 100%; background: var(--bg-2); border: 1px solid var(--line-2); border-radius: var(--radius);
  padding: 12px 14px; color: var(--text); font-family: var(--font-body); font-size: 1rem;
  outline: none; transition: border-color .15s; resize: vertical;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--accent-2); }
.form-group textarea::placeholder { color: var(--text-3); }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 32px 0; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.footer .logo { font-size: 1.1rem; }
.footer p { color: var(--text-3); font-size: 0.88rem; }

/* Avisos */
.toast {
  position: fixed; right: 24px; bottom: 24px; z-index: 200; max-width: calc(100% - 48px);
  background: #1b1b24; color: var(--text); border: 1px solid var(--line-2);
  border-left: 3px solid var(--ok); border-radius: var(--radius);
  padding: 14px 18px; font-size: 0.93rem; box-shadow: 0 10px 30px rgba(0,0,0,.35);
}
.toast-error { border-left-color: var(--error); }

/* ---- Responsive ---- */
@media (max-width: 860px) {
  .section-head, .about, .contact-grid { grid-template-columns: 1fr; gap: 16px; }
  .section-head { margin-bottom: 40px; }
  .principles { grid-column: 1; }
  .contact-grid { gap: 40px; }
  .project { grid-template-columns: 1fr; gap: 20px; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .container { padding: 0 20px; }
  .nav-toggle { display: block; }
  .nav-links {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line); padding: 8px 20px 20px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 1rem; }
  .nav-links .nav-cta { border: 0; border-radius: 0; padding: 14px 0; border-bottom: 0; }
  .hero { padding: 136px 0 80px; }
  .hero-lead { font-size: 1.05rem; }
  .hero-actions .btn { flex: 1 1 100%; }
  .section { padding: 72px 0; }
  .services { grid-template-columns: 1fr; }
  .service, .service:nth-child(even) { padding: 24px 0 28px; border-left: 0; }
  .principles { grid-template-columns: 1fr; gap: 20px; }
  .project-links .btn { flex: 1; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}