/* Hoja de estilos principal del portafolio */
/* Variables de tema oscuro por defecto */
:root {
  --bg: #000;
  --surface: #18181b;
  --surface-2: #27272a;
  --text: #e4e4e7;
  --text-link: rgba(6,182,212,.6);
  --text-link-hover: rgba(6,182,212,.85);
  --muted: #a1a1aa;
  --primary: #06b6d4;
  --primary-2: #22d3ee;
  --accent: #06b6d4;
  --card: #000;
  --ring: rgba(6,182,212,.4);
  --shadow: 0 10px 25px rgba(0,0,0,.35);
  --radius: 18px;
  --radius-sm: 12px;
  --radius-lg: 26px;
  --maxw: 1200px;
  --bg-gradient: radial-gradient(1200px 600px at 20% -10%, rgba(6,182,212,.15), rgba(63,63,70,.08) 40%, transparent 60%),
                  linear-gradient(180deg, #000, #18181b 35%);
  --header-bg: linear-gradient(180deg, rgba(24,24,27,.85), rgba(24,24,27,.6));
  --hover-bg: rgba(6,182,212,.08);
  --border: rgba(82,82,91,.15);
}

/* Variables para modo claro cuando el usuario selecciona data-theme="light" */
:root[data-theme="light"] {
  --bg: #fff;
  --surface: #fff;
  --surface-2: #f4f4f5;
  --text: #18181b;
  --text-link: rgba(6,182,212,.7);
  --text-link-hover: rgba(6,182,212,.85);
  --muted: #52525b;
  --primary: #06b6d4;
  --primary-2: #0891b2;
  --accent: #06b6d4;
  --card: #fff;
  --ring: rgba(6,182,212,.4);
  --shadow: 0 10px 25px rgba(0,0,0,.1);
  --bg-gradient: radial-gradient(1200px 600px at 20% -10%, rgba(6,182,212,.15), rgba(255,255,255,.8) 40%, transparent 60%),
                  linear-gradient(180deg, #fff, #f4f4f5 35%);
  --header-bg: linear-gradient(180deg, rgba(255,255,255,.85), rgba(255,255,255,.6));
  --hover-bg: rgba(6,182,212,.12);
  --border: rgba(82,82,91,.12);
}

/* Reseteo y tipografía base */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg-gradient);
  background-attachment: fixed;
  background-repeat: no-repeat;
  background-size: cover;
  color: var(--text);
  line-height: 1.6;
}

/* Layout base */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 1.2rem; }

/* Header */
header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(12px);
  background: var(--header-bg);
  border-bottom: 1px solid var(--border);
}
a {
  color: var(--text-link);
  text-decoration: none;
  transition: color .2s ease;
}
a:hover, a:focus {
  color: var(--text-link-hover);
  outline: none;
}
.nav { display:flex; align-items:center; justify-content:space-between; padding: .8rem 0; }
.nav nav { display:flex; align-items:center; }
.brand { display:flex; align-items:center; gap:.75rem; text-decoration:none; color:var(--text); }
.brand-logo {
  width:40px; height:40px; border-radius:12px;
  background: radial-gradient(circle at 30% 30%, var(--primary-2), var(--primary) 50%, #0891b2 70%);
  box-shadow: inset 0 0 20px rgba(6,182,212,.35), 0 10px 20px rgba(0,0,0,.45);
}
.brand h1 { font-size:1.05rem; margin:0; font-weight:700; letter-spacing:.3px; }

.menu { display:flex; align-items:center; gap: 1rem; }
.menu a { color: var(--muted); text-decoration:none; font-weight:500; padding:.5rem .75rem; border-radius:10px; }
.menu a:hover, .menu a:focus { color: var(--text); background: var(--hover-bg); outline: none; }

.menu-toggle { display:none; background:transparent; border:none; color:var(--text); font-size:1.25rem; }

#theme-select {
  margin-left:1rem;
  padding:.4rem;
  border-radius:8px;
  background: var(--surface);
  color: var(--text);
  border:1px solid var(--border);
}

/* Hero */
.hero { padding: 4.5rem 0 3rem; }
.hero-grid { display:grid; grid-template-columns: 1.2fr .8fr; gap:2rem; align-items:center; }
.kicker { display:inline-flex; align-items:center; gap:.5rem; font-size:.85rem; color:var(--primary-2); background: rgba(6,182,212,.08); border:1px solid rgba(6,182,212,.25); padding:.35rem .6rem; border-radius:999px; }
.title { font-size: clamp(1.4rem, 3.6vw, 3rem); line-height:1.15; margin:.75rem 0; font-weight:800; }
.subtitle { color:var(--muted); font-size:1.05rem; max-width:56ch; }

.cta { display:flex; gap:.75rem; margin-top:1.2rem; flex-wrap:wrap; }
.btn {
  display:inline-flex; align-items:center; gap:.5rem; text-decoration:none; font-weight:600;
  padding:.8rem 1rem; border-radius:12px; border:1px solid var(--border);
  background: linear-gradient(180deg, rgba(6,182,212,.15), rgba(6,182,212,.05)); color: var(--text);
  box-shadow: var(--shadow);
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 14px 30px rgba(0,0,0,.45); }
.btn.alt { background: linear-gradient(180deg, rgba(63,63,70,.15), rgba(63,63,70,.05)); }

.hero-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem; box-shadow: var(--shadow);
}
.hero-card .row { display:grid; grid-template-columns: 1fr 1fr; gap:.75rem; }
.stat { background: var(--surface-2); border:1px solid var(--border); padding:.9rem; border-radius:14px; }
.stat b { display:block; font-size:1.1rem; }
.small { color: var(--muted); font-size:.9rem; }

/* Section */
section { padding: 2.5rem 0 0; }
.section-title { font-size:1.4rem; font-weight:800; margin-bottom:1rem; display:flex; align-items:center; gap:.6rem; }
.section-grid { display:grid; grid-template-columns: repeat(12, 1fr); gap:1.2rem; }

/* Sobre mí */
.about { grid-column: span 7; background: var(--surface); border:1px solid var(--border); border-radius: var(--radius); padding:1rem; }
.about p { margin:.5rem 0; color: var(--text); }
.meta { grid-column: span 5; display:grid; gap:.75rem; }
.meta-card { background: var(--surface); border:1px solid var(--border); border-radius: var(--radius); padding: .9rem; }
.list { list-style:none; padding:0; margin:0; display:grid; gap:.35rem; }
.list li { display:flex; justify-content:space-between; gap:.75rem; }
.list span { color: var(--muted); }

/* Habilidades */
.chips { display:flex; flex-wrap:wrap; gap:.5rem; }
.chip { padding:.45rem .65rem; border-radius:999px; border:1px solid var(--border); background: var(--hover-bg); color: var(--primary-2); font-weight:600; font-size:.9rem; }

/* Proyectos */
.cards { display:grid; grid-template-columns: repeat(12,1fr); gap:1rem; }
.card { grid-column: span 4; background: var(--surface); border:1px solid var(--border); border-radius: var(--radius); overflow:hidden; box-shadow: var(--shadow); display:flex; flex-direction:column; }

.thumb { aspect-ratio: 16/9; background: radial-gradient(60% 80% at 40% 20%, rgba(6,182,212,.2), rgba(0,0,0,.6) 60%), url('https://images.unsplash.com/photo-1542903660-eedba2cda473?q=80&w=2070&auto=format&fit=crop&ixlib=rb-4.1.0&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D'); background-size:cover; background-position:center; }

.card-body { padding:1rem; display:flex; flex-direction:column; gap:.5rem; }
.card h3 { margin:.2rem 0; font-size:1.05rem; }
.tags { display:flex; flex-wrap:wrap; gap:.4rem; }
.tag { font-size:.8rem; padding:.25rem .5rem; border-radius:8px; border:1px solid var(--border); color:var(--text); }
.card-actions { display:flex; gap:.5rem; margin-top:auto; }

/* Experiencia (timeline) */
.timeline { position:relative; padding-left:1rem; }
.timeline::before { content:""; position:absolute; left:6px; top:0; bottom:0; width:2px; background: linear-gradient(180deg, rgba(6,182,212,.6), transparent 70%); }
.t-item { position:relative; margin-left:1rem; margin-bottom:1.1rem; }
.t-item::before { content:""; position:absolute; left:-1.05rem; top:.35rem; width:10px; height:10px; border-radius:999px; background: var(--primary); box-shadow:0 0 0 3px rgba(6,182,212,.2); }
.t-title { font-weight:700; }
.t-role { color: var(--muted); }

/* Footer */
footer { margin-top:3rem; border-top:1px solid var(--border); padding:2rem 0 3rem; color:var(--muted); text-align:center; }

/* Utilidades */
.muted { color: var(--muted); }
.grid-2 { display:grid; grid-template-columns:1fr 1fr; gap:1rem; }
.grid-3 { display:grid; grid-template-columns:repeat(3, 1fr); gap:1rem; }

/* Responsividad */
@media (max-width: 1024px) {
  .hero { padding: 3rem 0 2rem; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-card .row { grid-template-columns: 1fr 1fr; }
  .card { grid-column: span 6; }
}
@media (max-width: 720px) {
  .menu { display:none; position:absolute; right:1rem; top:60px; background: var(--surface); border:1px solid var(--border); border-radius:14px; padding:.5rem; flex-direction:column; width:min(260px, 90vw); }
  .menu.show { display:flex; }
  .menu-toggle { display:inline-flex; cursor:pointer; }
  .hero-card .row { grid-template-columns: 1fr; }
  .section-grid { grid-template-columns: 1fr; }
  .about, .meta { grid-column: 1/-1; }
  .cards { grid-template-columns: repeat(2,1fr); }
  .card { grid-column: auto; }
  .grid-3 { grid-template-columns:1fr; }
  .grid-2 { grid-template-columns:1fr; }
}
@media (max-width: 480px) {
  .cards { grid-template-columns: 1fr; }
  .cta { flex-direction:column; }
}