/* Jaime Lincovil — Portafolio de Proyectos */
:root {
  --accent: #005aa0;
  --accent-light: #e8f2fa;
  --accent-dark: #003d6e;
  --text: #1a1a2e;
  --text-muted: #5a6270;
  --bg: #f7f9fc;
  --card: #ffffff;
  --border: #dde4ee;
  --science: #7b2d8e;
  --science-light: #f3eaf6;
  --professional: #005aa0;
  --professional-light: #e8f2fa;
  --shadow: 0 4px 24px rgba(0, 40, 80, 0.08);
  --shadow-hover: 0 12px 40px rgba(0, 40, 80, 0.14);
  --radius: 14px;
  --font-sans: "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-display: Georgia, "Times New Roman", serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

/* Header */
.site-header {
  background: linear-gradient(135deg, var(--accent-dark) 0%, var(--accent) 55%, #1a7fc4 100%);
  color: #fff;
  padding: 3.5rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 85% 20%, rgba(255, 255, 255, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 10% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 40%);
  pointer-events: none;
}

.header-content {
  position: relative;
  z-index: 1;
}

.header-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.site-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 700;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.header-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  opacity: 0.92;
  margin: 0 0 1.25rem;
  max-width: 52ch;
}

.header-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.header-tags span {
  font-size: 0.82rem;
  background: rgba(255, 255, 255, 0.12);
  padding: 0.3rem 0.75rem;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.header-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  font-size: 0.9rem;
}

.header-links a {
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  opacity: 0.95;
}

.header-links a:hover {
  opacity: 1;
  text-decoration: none;
}

.header-links svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* Intro */
.intro {
  padding: 3rem 0 1rem;
}

.intro h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--accent-dark);
  margin: 0 0 0.75rem;
}

.intro p {
  color: var(--text-muted);
  max-width: 72ch;
  margin: 0;
  font-size: 1.05rem;
}

/* Filters */
.filters {
  padding: 2rem 0 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.filters-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-right: 0.25rem;
}

.filter-btn {
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.45rem 1rem;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: var(--card);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

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

.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Project grid */
.projects {
  padding: 1rem 0 4rem;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.project-card.hidden {
  display: none;
}

.card-top {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.project-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-icon svg {
  width: 28px;
  height: 28px;
}

.project-icon.professional {
  background: var(--professional-light);
  color: var(--professional);
}

.project-icon.science {
  background: var(--science-light);
  color: var(--science);
}

.card-meta {
  flex: 1;
  min-width: 0;
}

.card-type {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.card-type.professional {
  color: var(--professional);
}

.card-type.science {
  color: var(--science);
}

.project-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.35;
  color: var(--text);
}

.project-period {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

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

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.tech-tags span {
  font-size: 0.72rem;
  font-weight: 500;
  background: var(--bg);
  color: var(--text-muted);
  padding: 0.2rem 0.55rem;
  border-radius: 5px;
  border: 1px solid var(--border);
}

.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-top: 0.25rem;
  border-top: 1px solid var(--border);
  margin-top: auto;
}

.card-link {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  background: var(--accent-light);
  color: var(--accent);
  text-decoration: none;
  transition: background 0.2s;
}

.card-link:hover {
  background: #d0e6f7;
  text-decoration: none;
}

.card-link.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.card-link.secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Publications strip */
.publications {
  background: var(--card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 3rem 0;
}

.publications h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--accent-dark);
  margin: 0 0 1.25rem;
}

.pub-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.85rem;
}

.pub-list li {
  font-size: 0.92rem;
  color: var(--text-muted);
  padding-left: 1.25rem;
  position: relative;
}

.pub-list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.8rem;
}

.pub-list em {
  color: var(--text);
  font-style: normal;
  font-weight: 600;
}

/* Footer */
.site-footer {
  padding: 2.5rem 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.site-footer p {
  margin: 0.25rem 0;
}

/* Responsive */
@media (max-width: 600px) {
  .site-header {
    padding: 2.5rem 0 3rem;
  }

  .project-grid {
    grid-template-columns: 1fr;
  }

  .filters {
    gap: 0.5rem;
  }
}