/* ============================================================
   Portafolio · David Josué Cascante
   Tema: black / terminal · backend developer
   ============================================================ */

:root {
  --bg:       #0a0a0a;
  --surface:  #111111;
  --card:     #141414;
  --line:     #1f1f1f;
  --line-2:   #2a2a2a;
  --text:     #a3a3a3;
  --head:     #f0f0f0;
  --muted:    #737373;
  --faint:    #525252;
  --accent:   #3ecf8e;
  --accent-d: #2eb872;
  --accent-bg: rgba(62, 207, 142, .08);
  --radius:   10px;
  --maxw:     1080px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 5rem; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
strong { color: var(--head); font-weight: 600; }
em { color: var(--text); font-style: normal; border-bottom: 1px solid var(--line-2); }
::selection { background: rgba(62, 207, 142, .25); color: var(--head); }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #2a2a2a; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #3a3a3a; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 6rem 0; position: relative; z-index: 1; }
.hidden { display: none; }

[data-lucide] { width: 18px; height: 18px; stroke-width: 1.8; vertical-align: middle; }
.lucide { width: 18px; height: 18px; stroke: currentColor; flex-shrink: 0; }

/* ============================================================
   Fondo — negro plano, sin grano ni grid
   ============================================================ */
.bg-dark {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background: var(--bg);
  border-top: 1px solid var(--line);
}

/* ============================================================
   Navbar
   ============================================================ */
#navbar {
  position: fixed; top: 0; inset-inline: 0; z-index: 50;
  transition: background .3s ease, border-color .3s ease;
  border-bottom: 1px solid transparent;
}
#navbar.scrolled {
  background: rgba(10, 10, 10, .92);
  backdrop-filter: blur(8px);
  border-bottom-color: var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: .6rem; font-weight: 600; color: var(--head); }
.brand-badge {
  display: grid; place-items: center; width: 32px; height: 32px;
  border-radius: 6px; border: 1px solid var(--line-2);
  background: var(--card); font-family: 'JetBrains Mono', monospace;
  font-size: .75rem; color: var(--accent);
}
.nav-links { display: flex; align-items: center; gap: 2rem; font-size: .9rem; }
.nav-link { color: var(--muted); position: relative; transition: color .2s; }
.nav-link:hover, .nav-link.active { color: var(--head); }
.nav-link::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 1px; width: 0;
  background: var(--accent); transition: width .25s ease;
}
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-cta {
  color: var(--head); border: 1px solid var(--line-2); border-radius: 6px;
  padding: .4rem .9rem; font-family: 'JetBrains Mono', monospace; font-size: .85rem;
  transition: border-color .2s, background .2s;
}
.nav-cta:hover { border-color: var(--accent); background: var(--accent-bg); }
.menu-btn { display: none; background: none; border: none; color: var(--head); cursor: pointer; padding: .4rem; }
.menu-btn [data-lucide] { width: 24px; height: 24px; }

.mobile-menu { border-top: 1px solid var(--line); background: rgba(10,10,10,.98); }
.mobile-link { display: block; padding: .8rem 1.5rem; color: var(--text); border-bottom: 1px solid var(--line); }
.mobile-link:hover { background: var(--card); color: var(--head); }

/* ============================================================
   Botones
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font-weight: 500; font-size: .92rem; border-radius: 6px;
  padding: .65rem 1.2rem; border: 1px solid transparent;
  cursor: pointer; transition: all .15s ease;
  font-family: 'JetBrains Mono', monospace;
}
.btn-sm { padding: .5rem 1rem; font-size: .85rem; }
.btn-primary { background: var(--accent); color: #0a0a0a; font-weight: 600; }
.btn-primary:hover { background: #4ee09a; }
.btn-ghost { border-color: var(--line-2); color: var(--head); background: transparent; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.icon-link {
  display: grid; place-items: center; width: 38px; height: 38px;
  border-radius: 6px; border: 1px solid var(--line-2); background: var(--card);
  color: var(--muted); transition: all .15s ease;
}
.icon-link:hover { color: var(--head); border-color: var(--line-2); background: var(--surface); }
.icon-svg { width: 18px; height: 18px; display: block; flex-shrink: 0; }
.icon-svg-sm { width: 16px; height: 16px; }
.btn .icon-svg { color: inherit; }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  padding: 7rem 0 4rem; position: relative; z-index: 1;
  border-bottom: 1px solid var(--line);
}
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 3.5rem; align-items: center; }

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: 'JetBrains Mono', monospace; font-size: .78rem; color: var(--muted);
  margin-bottom: 1.4rem;
}
.status-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(62, 207, 142, .5);
}
.hero-name {
  font-size: clamp(2.6rem, 6vw, 4rem); font-weight: 800; color: var(--head);
  line-height: 1.05; letter-spacing: -.03em;
}
.hero-role {
  font-family: 'JetBrains Mono', monospace; color: var(--accent);
  font-size: 1rem; margin-top: .85rem;
}
.hero-desc { margin-top: 1.4rem; max-width: 32rem; color: var(--muted); font-size: 1rem; }
.hero-desc .hl { color: var(--head); font-weight: 500; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.hero-social { display: flex; gap: .6rem; margin-top: 2rem; }

/* ============================================================
   Terminal / código
   ============================================================ */
.code-window {
  border: 1px solid var(--line-2); border-radius: var(--radius);
  background: #080808; overflow: hidden;
}
.code-bar {
  display: flex; align-items: center; gap: .35rem;
  padding: .6rem .85rem; background: var(--surface); border-bottom: 1px solid var(--line);
}
.code-bar .dot { width: 10px; height: 10px; border-radius: 50%; background: #333; }
.code-file {
  margin-left: .5rem; font-family: 'JetBrains Mono', monospace;
  font-size: .72rem; color: var(--faint); display: inline-flex; align-items: center; gap: .4rem;
}
.code-file [data-lucide] { width: 13px; height: 13px; }
.code-body {
  margin: 0; padding: 1.1rem 1.2rem; overflow-x: auto;
  font-family: 'JetBrains Mono', monospace; font-size: .8rem; line-height: 1.75;
  color: var(--text); white-space: pre;
}
.c-key  { color: #c792ea; }
.c-cls  { color: var(--accent); }
.c-fn   { color: #82aaff; }
.c-str  { color: #ecc48d; }
.c-var  { color: #d4d4d4; }
.c-bool { color: #ff5370; }
.c-com  { color: var(--faint); font-style: italic; }

/* ============================================================
   Secciones
   ============================================================ */
.section-head { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.2rem; }
.section-index {
  font-family: 'JetBrains Mono', monospace; color: var(--accent);
  font-size: .85rem; font-weight: 500;
}
.section-title { font-size: clamp(1.5rem, 3.5vw, 2rem); color: var(--head); font-weight: 700; white-space: nowrap; letter-spacing: -.02em; }
.section-line { flex: 1; height: 1px; background: var(--line); }
.section-sub { max-width: 38rem; color: var(--muted); margin-bottom: 2.5rem; }

/* ============================================================
   Sobre mí
   ============================================================ */
.about-grid { display: grid; grid-template-columns: 1.7fr 1fr; gap: 2.5rem; align-items: start; margin-top: 1.5rem; }
.about-text p { margin-bottom: 1.1rem; font-size: 1rem; color: var(--text); }
.traits { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.5rem; }
.trait {
  display: inline-flex; align-items: center; gap: .4rem;
  font-family: 'JetBrains Mono', monospace; font-size: .78rem; color: var(--muted);
  border: 1px solid var(--line); background: var(--card);
  padding: .35rem .75rem; border-radius: 4px;
}
.trait [data-lucide] { width: 13px; height: 13px; color: var(--accent); }

.info-card { border: 1px solid var(--line); background: var(--card); border-radius: var(--radius); padding: 1.4rem; }
.info-title {
  font-family: 'JetBrains Mono', monospace; font-size: .72rem; text-transform: uppercase;
  letter-spacing: .1em; color: var(--muted); margin-bottom: 1rem;
}
.info-list li { display: flex; align-items: flex-start; gap: .7rem; padding: .5rem 0; font-size: .9rem; }
.info-list li + li { border-top: 1px solid var(--line); }
.info-list [data-lucide] { width: 16px; height: 16px; color: var(--accent); margin-top: 2px; flex-shrink: 0; }
.info-list .k { display: block; color: var(--faint); font-size: .68rem; text-transform: uppercase; letter-spacing: .06em; font-family: 'JetBrains Mono', monospace; }
.info-list > li > span { color: var(--head); }

/* ============================================================
   Habilidades
   ============================================================ */
.tech-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: .75rem; margin-bottom: 3rem;
}
.tech-card {
  display: flex; flex-direction: column; align-items: center; text-align: center; gap: .4rem;
  border: 1px solid var(--line); background: var(--card); border-radius: var(--radius);
  padding: 1.4rem .75rem; transition: border-color .2s ease;
}
.tech-card:hover { border-color: var(--line-2); }
.tech-logo {
  font-size: 2.4rem; line-height: 1; margin-bottom: .25rem;
  filter: grayscale(1) opacity(.45); transition: filter .2s ease;
}
.tech-card:hover .tech-logo { filter: grayscale(0) opacity(.9); }
.tech-name { color: var(--head); font-weight: 500; font-size: .88rem; }
.tech-lvl { font-family: 'JetBrains Mono', monospace; font-size: .68rem; color: var(--faint); }

.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; }
.cat-card {
  border: 1px solid var(--line); background: var(--card); border-radius: var(--radius);
  padding: 1.25rem; transition: border-color .2s ease;
}
.cat-card:hover { border-color: var(--line-2); }
.cat-icon {
  display: grid; place-items: center; width: 36px; height: 36px; border-radius: 6px;
  border: 1px solid var(--line); background: var(--surface); color: var(--accent); margin-bottom: .85rem;
}
.cat-icon [data-lucide] { width: 18px; height: 18px; }
.cat-card h3 { color: var(--head); font-size: .95rem; font-weight: 600; margin-bottom: .3rem; }
.cat-card p { color: var(--muted); font-size: .85rem; }

/* ============================================================
   Proyectos
   ============================================================ */
.project-card {
  border: 1px solid var(--line); background: var(--card); border-radius: var(--radius);
  padding: 1.75rem; transition: border-color .2s ease;
}
.project-card:hover { border-color: var(--line-2); }
.project-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 2rem; align-items: center; }
.project-top { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; margin-bottom: .9rem; }
.project-ic {
  display: grid; place-items: center; width: 38px; height: 38px; border-radius: 6px;
  border: 1px solid var(--line); background: var(--surface); color: var(--accent);
}
.project-name { color: var(--head); font-size: 1.3rem; font-weight: 700; }
.badge {
  display: inline-flex; align-items: center; gap: .3rem;
  font-family: 'JetBrains Mono', monospace; font-size: .68rem; color: var(--accent);
  border: 1px solid rgba(62, 207, 142, .3); background: var(--accent-bg);
  padding: .15rem .55rem; border-radius: 4px;
}
.badge [data-lucide] { width: 12px; height: 12px; }
.project-desc { color: var(--muted); margin-bottom: 1rem; font-size: .95rem; }
.project-list { display: flex; flex-direction: column; gap: .5rem; margin-bottom: 1.1rem; }
.project-list li { display: flex; align-items: center; gap: .55rem; font-size: .88rem; color: var(--text); }
.project-list [data-lucide] { width: 15px; height: 15px; color: var(--accent); flex-shrink: 0; }

.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1.2rem; }
.chip {
  display: inline-flex; align-items: center; gap: .35rem;
  font-family: 'JetBrains Mono', monospace; font-size: .7rem; color: var(--muted);
  border: 1px solid var(--line); background: var(--surface);
  padding: .25rem .6rem; border-radius: 4px;
}
.chip i:not([data-lucide]) { font-size: .85rem; }
.chip [data-lucide] { width: 13px; height: 13px; color: var(--faint); }

.project-actions { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.private-note {
  display: inline-flex; align-items: center; gap: .35rem;
  font-family: 'JetBrains Mono', monospace; font-size: .75rem; color: var(--faint);
}
.private-note [data-lucide] { width: 13px; height: 13px; }

/* ============================================================
   Formación
   ============================================================ */
.timeline-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem 3rem; margin-top: 1.5rem; }
.timeline { position: relative; padding-left: 1.4rem; }
.timeline::before {
  content: ""; position: absolute; left: 3px; top: 6px; bottom: 6px; width: 1px; background: var(--line);
}
.t-item { position: relative; padding-bottom: 1.8rem; }
.t-dot {
  position: absolute; left: -1.4rem; top: 6px; width: 7px; height: 7px; border-radius: 50%;
  background: var(--bg); border: 1px solid var(--accent);
}
.t-org { font-family: 'JetBrains Mono', monospace; font-size: .68rem; color: var(--faint); }
.t-title { color: var(--head); font-size: .98rem; font-weight: 600; margin: .2rem 0 .3rem; }
.t-desc { color: var(--muted); font-size: .85rem; }

/* ============================================================
   Contacto
   ============================================================ */
.contact { text-align: center; border-top: 1px solid var(--line); }
.contact-inner { max-width: 40rem; }
.contact-title { font-size: clamp(1.7rem, 4vw, 2.2rem); color: var(--head); font-weight: 700; margin: .5rem 0 .9rem; }
.contact-desc { color: var(--muted); margin: 0 auto 1.8rem; }
.contact-actions { display: flex; justify-content: center; gap: .75rem; flex-wrap: wrap; }

/* ============================================================
   Footer
   ============================================================ */
.footer { border-top: 1px solid var(--line); padding: 1.5rem 0; position: relative; z-index: 1; }
.footer-inner {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: .5rem;
  font-family: 'JetBrains Mono', monospace; font-size: .78rem; color: var(--faint);
}
.footer-muted { color: var(--faint); }

/* ============================================================
   Volver arriba
   ============================================================ */
.to-top {
  position: fixed; bottom: 1.25rem; right: 1.25rem; z-index: 40;
  display: grid; place-items: center; width: 38px; height: 38px; border-radius: 6px;
  border: 1px solid var(--line-2); background: var(--card); color: var(--head); cursor: pointer;
  opacity: 0; transform: translateY(12px); pointer-events: none; transition: all .2s ease;
}
.to-top.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
.to-top:hover { border-color: var(--accent); color: var(--accent); }

/* ============================================================
   Reveal
   ============================================================ */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .5s ease, transform .5s ease; transition-delay: var(--delay, 0s); }
.reveal.show { opacity: 1; transform: translateY(0); }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .about-grid { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .timeline-grid { grid-template-columns: 1fr; gap: 0; }
  .tech-grid { grid-template-columns: repeat(3, 1fr); }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .nav-links { display: none; }
  .menu-btn { display: block; }
  .section { padding: 4.5rem 0; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .cat-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 6rem; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}