/* ==========================================================================
   Juan Hoyos — Portafolio
   Tema claro, moderno, con transiciones suaves
   ========================================================================== */

:root {
  --bg: #ffffff;
  --bg-alt: #f7f8fa;
  --bg-card: #ffffff;
  --border: #e7e9ee;
  --text: #14181f;
  --text-dim: #6b7280;
  --accent: #4f46e5;
  --accent-2: #0ea5a4;
  --accent-soft: #eef0ff;
  --danger: #ef4444;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(20, 24, 31, 0.04);
  --shadow-md: 0 8px 24px rgba(20, 24, 31, 0.08);
  --shadow-lg: 0 24px 48px rgba(20, 24, 31, 0.12);
  --mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  --sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: color 0.2s var(--ease); }
a:hover { color: #3730a3; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Reveal on scroll ---- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Nav ---- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s var(--ease);
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--text);
  letter-spacing: -0.02em;
}
.brand span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--text-dim);
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.25s var(--ease);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--text);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease);
}
.nav-cta:hover { color: #fff; background: var(--accent); transform: translateY(-1px); }

/* ---- Hero ---- */
.hero {
  padding: 120px 0 96px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -180px;
  right: -160px;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle at center, var(--accent-soft), transparent 70%);
  z-index: -1;
}
.hero .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  background: var(--accent-soft);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  margin: 0 0 20px;
}
.hero h1 {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 12px;
  line-height: 1.08;
}
.hero .subtitle {
  font-size: 1.25rem;
  color: var(--text-dim);
  font-weight: 500;
  margin: 0 0 20px;
}
.hero p.lead {
  max-width: 620px;
  color: var(--text-dim);
  font-size: 1.05rem;
}
.cta-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 36px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}
.btn-primary {
  background: var(--text);
  color: #fff;
  border-color: var(--text);
}
.btn-primary:hover { color: #fff; background: var(--accent); border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline {
  background: transparent;
  color: var(--text);
}
.btn-outline:hover { color: var(--text); border-color: var(--text); transform: translateY(-2px); box-shadow: var(--shadow-sm); }

/* ---- Stats strip ---- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 24px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}
.stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}
.stat-label {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin-top: 4px;
}

/* ---- Sections ---- */
section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }

.section-title {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin: 0 0 8px;
}
h2.section-heading {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}
.section-sub {
  color: var(--text-dim);
  max-width: 620px;
  margin: 0 0 48px;
}

/* ---- Project cards / grid ---- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.card:hover {
  border-color: transparent;
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.card-media {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.6rem;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.card-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), rgba(0,0,0,0.05));
}
.grad-1 { background: linear-gradient(135deg, #6366f1, #22d3ee); }
.grad-2 { background: linear-gradient(135deg, #f97316, #ec4899); }
.grad-3 { background: linear-gradient(135deg, #10b981, #0ea5a4); }
.grad-4 { background: linear-gradient(135deg, #8b5cf6, #6366f1); }
.grad-5 { background: linear-gradient(135deg, #ef4444, #f97316); }
.grad-6 { background: linear-gradient(135deg, #0ea5a4, #6366f1); }

.card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.card h3 { margin: 0; font-size: 1.15rem; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--text-dim); font-size: 0.95rem; }

.card-result {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-2);
  background: rgba(14, 165, 164, 0.08);
  border-radius: 999px;
  padding: 6px 12px;
  width: fit-content;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.card-tags .tag {
  font-size: 0.75rem;
  padding: 4px 10px;
}

.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  width: fit-content;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.badge-live { background: rgba(14, 165, 164, 0.12); color: var(--accent-2); }
.badge-soon { background: rgba(107, 114, 128, 0.1); color: var(--text-dim); }

.card-link {
  margin-top: auto;
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s var(--ease);
}
.card-link:hover { gap: 10px; text-decoration: none; }

/* ---- Skills ---- */
.tag-group { margin-bottom: 28px; }
.tag-group h4 {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-weight: 700;
}
.tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tag {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--text);
  font-weight: 500;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), transform 0.2s var(--ease);
}
.tag:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

/* ---- Contact ---- */
.contact-card {
  background: var(--text);
  color: #fff;
  border-radius: 24px;
  padding: 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.contact-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(79, 70, 229, 0.35), transparent 60%),
              radial-gradient(circle at 80% 80%, rgba(14, 165, 164, 0.3), transparent 60%);
}
.contact-card > * { position: relative; z-index: 1; }
.contact-card .section-title { color: var(--accent-2); }
.contact-card h2 { color: #fff; }
.contact-card p { color: rgba(255,255,255,0.7); max-width: 480px; margin: 0 auto 32px; }

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}
.contact-list a {
  color: #fff;
  border: 1px solid rgba(255,255,255,0.2);
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}
.contact-list a:hover {
  color: #fff;
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.4);
  transform: translateY(-2px);
  text-decoration: none;
}

/* ---- Footer ---- */
footer {
  padding: 32px 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .hero { padding: 96px 0 64px; }
  .contact-card { padding: 40px 24px; }
}