:root {
  --bg: #0b0f14;
  --bg-alt: #121820;
  --surface: #161e29;
  --border: #232d3a;
  --text: #eef2f6;
  --text-muted: #9aa7b6;
  --accent: #4f9cff;
  --accent-2: #7bd88f;
  --warn: #f2b544;
  --danger: #8a94a3;
  --radius: 14px;
  --max-width: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }

img { max-width: 100%; display: block; }

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

/* Nav */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 15, 20, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.brand span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 28px;
  font-size: 0.95rem;
}

.nav-links a {
  color: var(--text-muted);
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--text); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero */
.hero {
  padding: 96px 0 72px;
  text-align: center;
}

.hero .eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  font-weight: 600;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin: 12px 0 8px;
}

.hero .role {
  color: var(--text-muted);
  font-size: 1.15rem;
  margin-bottom: 20px;
}

.hero p.pitch {
  max-width: 620px;
  margin: 0 auto 32px;
  color: var(--text-muted);
}

.cta-group {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--accent);
  color: #06111f;
}

.btn-secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

/* Section headers */
section { padding: 72px 0; }

.section-head {
  text-align: center;
  margin-bottom: 40px;
}

.section-head .eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 700;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 8px 0 6px;
}

.section-head p {
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
}

/* Filters */
.filters {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.filter-btn {
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn.active,
.filter-btn:hover {
  border-color: var(--accent);
  color: var(--text);
}

/* Project grid */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 0.2s, border-color 0.2s;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.project-card h3 {
  margin: 0;
  font-size: 1.1rem;
}

.badge {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

.badge-publicado { background: rgba(123, 216, 143, 0.15); color: var(--accent-2); }
.badge-en-desarrollo { background: rgba(242, 181, 68, 0.15); color: var(--warn); }
.badge-privado { background: rgba(154, 167, 182, 0.15); color: var(--danger); }

.project-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin: 0;
  flex-grow: 1;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  font-size: 0.72rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 3px 9px;
  border-radius: 6px;
  color: var(--text-muted);
}

.card-link {
  margin-top: 4px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
}

.card-link.disabled {
  color: var(--text-muted);
  cursor: default;
}

/* Contact */
.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

.contact-links {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 24px;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

footer a { color: var(--accent); }

@media (max-width: 720px) {
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 16px 24px;
    gap: 16px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
}