/* ═══════════════════════════════════════════════════════════
   Portafolio — Tomás Resnik
   Tema oscuro por defecto · claro con [data-theme="light"]
   ═══════════════════════════════════════════════════════════ */

/* ── Tokens ── */
:root {
  --accent-1: #22d3ee;
  --accent-2: #7c6cff;
  --grad: linear-gradient(115deg, var(--accent-1), var(--accent-2));
  --radius: 18px;
  --radius-sm: 12px;
  --maxw: 1080px;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Space Grotesk", var(--font-sans);
}

:root[data-theme="dark"] {
  --bg: #0b0d10;
  --bg-2: #0e1116;
  --surface: #14181e;
  --surface-2: #1a1f27;
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #eef1f6;
  --text-soft: #c3cad6;
  --muted: #8c96a5;
  --shadow: 0 24px 60px -28px rgba(0, 0, 0, 0.75);
  --orb-op: 0.5;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #f6f7f9;
  --bg-2: #eef0f4;
  --surface: #ffffff;
  --surface-2: #f2f4f8;
  --border: rgba(12, 18, 28, 0.10);
  --border-strong: rgba(12, 18, 28, 0.18);
  --text: #10141b;
  --text-soft: #384254;
  --muted: #5c6675;
  --shadow: 0 22px 50px -30px rgba(20, 30, 50, 0.35);
  --orb-op: 0.28;
  --accent-2: #6a54f0;
  color-scheme: light;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
ul { list-style: none; padding: 0; }
button { font: inherit; cursor: pointer; }
::selection { background: var(--accent-2); color: #fff; }

/* ── Fondo decorativo ── */
.bg-decor { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.orb {
  position: absolute; border-radius: 50%; filter: blur(90px);
  opacity: var(--orb-op);
}
.orb-1 { width: 46vw; height: 46vw; top: -14vw; right: -8vw; background: radial-gradient(circle, var(--accent-2), transparent 68%); }
.orb-2 { width: 40vw; height: 40vw; top: 32vw; left: -14vw; background: radial-gradient(circle, var(--accent-1), transparent 68%); }
.grid-fade {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(ellipse 75% 60% at 50% 0%, #000 5%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 75% 60% at 50% 0%, #000 5%, transparent 75%);
  opacity: 0.7;
}

/* ── Nav ── */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 20px;
  max-width: var(--maxw); margin: 0 auto;
  padding: 16px clamp(18px, 4vw, 40px);
  backdrop-filter: blur(14px);
}
.nav::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; letter-spacing: -0.01em; }
.brand-mark {
  display: grid; place-items: center; width: 34px; height: 34px;
  border-radius: 10px; background: var(--grad); color: #fff;
  font-family: var(--font-display); font-weight: 700; font-size: 15px;
  box-shadow: 0 6px 18px -6px var(--accent-2);
}
.brand-name { font-family: var(--font-display); font-size: 1.02rem; }
.nav-links { display: flex; gap: 26px; margin-left: auto; }
.nav-links a { color: var(--text-soft); font-size: 0.95rem; font-weight: 500; position: relative; transition: color 0.2s; }
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -5px; height: 2px; width: 0;
  background: var(--grad); transition: width 0.25s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }

.nav-actions { display: flex; align-items: center; gap: 8px; }
.lang-toggle {
  display: flex; align-items: center; gap: 5px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 999px; padding: 6px 12px; color: var(--muted);
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.03em;
  transition: border-color 0.2s;
}
.lang-toggle:hover { border-color: var(--border-strong); }
.lang-opt { transition: color 0.2s; }
.lang-opt.is-active { color: var(--text); }
.lang-sep { opacity: 0.4; }
.icon-btn {
  display: grid; place-items: center; width: 38px; height: 38px;
  border-radius: 10px; background: var(--surface); border: 1px solid var(--border);
  color: var(--text-soft); transition: border-color 0.2s, color 0.2s, transform 0.2s;
}
.icon-btn:hover { border-color: var(--border-strong); color: var(--text); transform: translateY(-1px); }
.ico-moon { display: none; }
:root[data-theme="light"] .ico-sun { display: none; }
:root[data-theme="light"] .ico-moon { display: block; }

/* ── Botones ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 22px; border-radius: 12px; font-weight: 600; font-size: 0.95rem;
  border: 1px solid transparent; transition: transform 0.18s, box-shadow 0.2s, background 0.2s, border-color 0.2s;
  white-space: nowrap;
}
.btn-sm { padding: 10px 16px; font-size: 0.88rem; border-radius: 10px; }
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 12px 28px -12px var(--accent-2); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 34px -12px var(--accent-2); }
.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--border-strong); }
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--accent-1); color: var(--text); }
.btn-locked { background: transparent; color: var(--muted); border: 1px dashed var(--border-strong); cursor: default; }
.arr { transition: transform 0.2s; }
.btn:hover .arr { transform: translate(2px, -2px); }

/* ── Hero ── */
.hero {
  max-width: var(--maxw); margin: 0 auto;
  padding: clamp(56px, 11vw, 130px) clamp(18px, 4vw, 40px) clamp(40px, 7vw, 80px);
  text-align: center;
}
.kicker {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 15px; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--border);
  font-size: 0.85rem; font-weight: 500; color: var(--text-soft);
}
.kicker .dot {
  width: 8px; height: 8px; border-radius: 50%; background: #34d399;
  box-shadow: 0 0 0 0 #34d39966; animation: pulse 2.2s infinite;
}
@keyframes pulse { 0% { box-shadow: 0 0 0 0 #34d39966; } 70% { box-shadow: 0 0 0 9px #34d39900; } 100% { box-shadow: 0 0 0 0 #34d39900; } }

.hero-name {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(2.7rem, 9vw, 5.4rem); line-height: 1.02;
  letter-spacing: -0.03em; margin: 22px 0 6px;
}
.hero-role {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(1.2rem, 3.6vw, 2rem); line-height: 1.2;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  letter-spacing: -0.01em;
}
.hero-role .amp { opacity: 0.55; }
.hero-sub {
  max-width: 620px; margin: 20px auto 0;
  color: var(--text-soft); font-size: clamp(1rem, 2.4vw, 1.15rem);
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 32px; }

.stack-row {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 10px;
  margin-top: 46px;
}
.stack-row li {
  padding: 7px 14px; border-radius: 999px; font-size: 0.83rem; font-weight: 500;
  color: var(--muted); background: var(--surface); border: 1px solid var(--border);
}

/* ── Secciones ── */
.section {
  max-width: var(--maxw); margin: 0 auto;
  padding: clamp(50px, 9vw, 100px) clamp(18px, 4vw, 40px);
}
.section-head { text-align: center; margin-bottom: 48px; }
.section-kicker {
  font-family: var(--font-display); font-size: 0.82rem; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(1.8rem, 5vw, 2.7rem); letter-spacing: -0.02em; line-height: 1.1;
}
.section-lead {
  max-width: 560px; margin: 14px auto 0; color: var(--text-soft); font-size: 1.05rem;
}
.section-head .section-lead { margin-inline: auto; }

/* ── Proyectos ── */
.project {
  position: relative; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
  overflow: hidden;
}
.project::before {
  content: ""; position: absolute; inset-inline: 0; top: 0; height: 3px;
  background: var(--accent); transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s;
}
.project:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); box-shadow: var(--shadow); }
.project:hover::before { transform: scaleX(1); }

/* Destacado */
.project.featured {
  display: grid; grid-template-columns: 260px 1fr; gap: 34px; align-items: center;
  padding: 34px; margin-bottom: 26px;
}
.project-media {
  position: relative; display: grid; place-items: center; align-self: center;
  aspect-ratio: 1; border-radius: var(--radius);
  background: radial-gradient(circle at 50% 40%, var(--accent-soft), transparent 70%);
}
.project-media img { border-radius: 22px; box-shadow: 0 20px 50px -18px var(--accent); }
.media-glow { position: absolute; inset: 20%; border-radius: 50%; background: var(--accent); filter: blur(70px); opacity: 0.22; z-index: -1; }

.project-tophead { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 11px; border-radius: 999px; font-size: 0.74rem; font-weight: 600;
  letter-spacing: 0.02em;
}
.badge-featured { background: var(--accent-soft); color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent); }
.badge-live { background: color-mix(in srgb, #34d399 16%, transparent); color: #34d399; border: 1px solid #34d39955; }

.project-icon {
  display: grid; place-items: center; width: 66px; height: 66px; margin-bottom: 18px;
  border-radius: 16px; background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
}
.project-title { font-family: var(--font-display); font-size: 1.45rem; font-weight: 700; letter-spacing: -0.01em; }
.featured .project-title { font-size: 1.85rem; }
.project-tag { color: var(--accent); font-weight: 600; font-size: 0.92rem; margin-top: 3px; }
.project-desc { color: var(--text-soft); margin-top: 12px; font-size: 0.97rem; }

.feature-list { margin-top: 16px; display: grid; gap: 8px; }
.feature-list li { position: relative; padding-left: 24px; color: var(--text-soft); font-size: 0.92rem; }
.feature-list li::before {
  content: ""; position: absolute; left: 4px; top: 9px; width: 8px; height: 8px;
  border-radius: 50%; background: var(--accent);
}

.chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 18px; }
.chips li {
  padding: 5px 11px; border-radius: 8px; font-size: 0.78rem; font-weight: 500;
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text-soft);
}
.project-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }

.project-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }

/* ── Sobre mí ── */
.about { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: start; }
.about-text p { color: var(--text-soft); margin-top: 14px; }
.about-text .section-title { margin-bottom: 6px; }
.about-skills { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.skill-group {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 16px;
}
.skill-group h4 {
  font-family: var(--font-display); font-size: 0.82rem; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--muted); margin-bottom: 11px; font-weight: 600;
}

/* ── Contacto ── */
.section-contact { text-align: center; }
.contact { max-width: 760px; margin: 0 auto; }
.contact .section-lead { margin-inline: auto; }
.contact-links {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 34px; text-align: left;
}
.contact-card {
  display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto;
  column-gap: 14px; align-items: center;
  padding: 18px 20px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.contact-card svg { grid-row: 1 / 3; color: var(--accent-2); }
.contact-label { font-size: 0.78rem; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.contact-value { font-weight: 600; font-size: 0.98rem; word-break: break-word; }
.contact-card:hover { transform: translateY(-3px); border-color: var(--accent-1); box-shadow: var(--shadow); }

/* ── Footer ── */
.footer {
  max-width: var(--maxw); margin: 0 auto;
  padding: 34px clamp(18px, 4vw, 40px); border-top: 1px solid var(--border);
  display: flex; flex-wrap: wrap; gap: 6px 18px; justify-content: space-between;
  color: var(--muted); font-size: 0.88rem;
}
.footer-made { display: inline-flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.footer-link {
  color: var(--text-soft); text-decoration: none;
  border-bottom: 1px solid transparent; transition: color .2s ease, border-color .2s ease;
}
.footer-link:hover { color: var(--text); border-bottom-color: var(--border-strong); }
.footer-link .arr { font-size: 0.9em; }

/* ── Reveal ── */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ── Responsive ── */
@media (max-width: 860px) {
  .project.featured { grid-template-columns: 1fr; gap: 24px; text-align: center; }
  .project.featured .project-tophead,
  .project.featured .project-links,
  .project.featured .chips { justify-content: center; }
  .project.featured .feature-list { text-align: left; max-width: 420px; margin-inline: auto; }
  .project-media { max-width: 220px; margin: 0 auto; }
  .about { grid-template-columns: 1fr; gap: 30px; }
}
@media (max-width: 680px) {
  .nav-links { display: none; }
  .project-grid { grid-template-columns: 1fr; }
  .contact-links { grid-template-columns: 1fr; }
  .about-skills { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 400px) {
  .about-skills { grid-template-columns: 1fr; }
  .brand-name { display: none; }
}

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