@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600;700&family=IBM+Plex+Sans:wght@400;500;600&display=swap");

/* ===== Tokens: light (default) ===== */
:root {
  --bg: #f6f8fa;
  --bg-elevated: #ffffff;
  --text: #1f2328;
  --text-muted: #57606a;
  --accent: #1a7f37;
  --accent-soft: #d9f2df;
  --accent-2: #0969da;
  --border: #d0d7de;
  --shadow: rgba(31, 35, 40, 0.08);

  --font-mono: "IBM Plex Mono", "Courier New", monospace;
  --font-sans: "IBM Plex Sans", -apple-system, "Segoe UI", sans-serif;

  --content-width: 880px;
  --radius: 10px;
  --transition: 160ms ease;
}

/* ===== Tokens: dark, from OS preference ===== */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d1117;
    --bg-elevated: #161b22;
    --text: #c9d1d9;
    --text-muted: #8b949e;
    --accent: #3fb950;
    --accent-soft: rgba(63, 185, 80, 0.15);
    --accent-2: #58a6ff;
    --border: #30363d;
    --shadow: rgba(0, 0, 0, 0.4);
  }
}

/* ===== Tokens: dark, explicit toggle wins either way ===== */
:root[data-theme="dark"] {
  --bg: #0d1117;
  --bg-elevated: #161b22;
  --text: #c9d1d9;
  --text-muted: #8b949e;
  --accent: #3fb950;
  --accent-soft: rgba(63, 185, 80, 0.15);
  --accent-2: #58a6ff;
  --border: #30363d;
  --shadow: rgba(0, 0, 0, 0.4);
}

/* ===== Reset ===== */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  background-image: radial-gradient(var(--border) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  transition:
    background-color var(--transition),
    color var(--transition);
}

img {
  max-width: 100%;
}

::selection {
  background: var(--accent);
  color: var(--bg);
}

/* ===== Screen-reader only ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===== Skip link ===== */
.skip-link {
  position: absolute;
  top: -3rem;
  left: 1rem;
  z-index: 100;
  background: var(--accent);
  color: var(--bg);
  padding: 0.6rem 1rem;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  text-decoration: none;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 1rem;
}

/* ===== Focus states ===== */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.brand {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
}

.brand-link {
  text-decoration: none;
}

.cursor {
  color: var(--accent);
  animation: blink 1.1s step-end infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.site-nav a {
  position: relative;
  color: var(--text-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition);
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width var(--transition);
}

.site-nav a:hover {
  color: var(--accent);
}

.site-nav a:hover::after,
.site-nav a.active::after {
  width: 100%;
}

.site-nav a.active {
  color: var(--accent);
}

.header-actions {
  display: flex;
  gap: 0.5rem;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.25rem;
  height: 2.25rem;
  padding: 0 0.6rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  cursor: pointer;
  transition:
    border-color var(--transition),
    color var(--transition);
}

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

/* ===== Layout ===== */
main {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 4rem 0;
  border-bottom: 1px solid var(--border);
}

.section:last-of-type {
  border-bottom: none;
}

h1,
h2,
h3 {
  font-family: var(--font-mono);
  text-wrap: balance;
  margin: 0 0 1rem 0;
}

h2 {
  font-size: 1.5rem;
  color: var(--text);
}

h3 {
  font-size: 1.1rem;
}

p {
  max-width: 65ch;
}

/* ===== Hero ===== */
.hero {
  padding-top: 3rem;
}

.terminal-line {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-muted);
  margin: 0 0 1.5rem 0;
}

.terminal-line .prompt {
  color: var(--accent-2);
}

.terminal-line .path {
  color: var(--accent);
}

.avatar-frame {
  display: block;
  width: 72px;
  height: 72px;
  margin-bottom: 1rem;
  border-radius: 50%;
  border: 2px solid var(--accent);
  overflow: hidden;
}

.avatar {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
}

.hero .tagline {
  color: var(--text-muted);
  font-size: 1.1rem;
}

.counter-badge {
  display: inline-flex;
  align-items: baseline;
  gap: 0.6rem;
  margin-top: 1rem;
  padding: 0.75rem 1.25rem;
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  font-family: var(--font-mono);
  box-shadow: 0 0 32px -8px var(--accent);
  transition:
    transform var(--transition),
    box-shadow var(--transition);
}

.counter-badge:hover {
  transform: translateY(-2px);
  box-shadow:
    0 0 40px -6px var(--accent),
    0 6px 16px var(--shadow);
}

.counter-badge strong {
  font-size: 1.6rem;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.counter-badge span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===== Cards ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.card {
  position: relative;
  overflow: hidden;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    border-color var(--transition);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    280px circle at var(--spot-x, 50%) var(--spot-y, 50%),
    var(--accent-soft),
    transparent 60%
  );
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: 0 10px 24px var(--shadow);
}

.card:hover::before {
  opacity: 1;
}

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

.card h3 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
}

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.card a {
  position: relative;
  display: inline-block;
  margin-top: 0.5rem;
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  text-decoration: none;
}

.card a:hover {
  text-decoration: underline;
}

.tech-chips {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.9rem;
}

.tech-chips .chip {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.2rem 0.6rem;
}

.tech-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.25rem 0 0 0;
}

.filter-chip {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  cursor: pointer;
  transition:
    border-color var(--transition),
    color var(--transition);
}

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

.filter-chip.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.activity-chart {
  display: block;
  width: 100%;
  max-width: 720px;
  height: auto;
  margin-top: 1.5rem;
}

.contrib-latest {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.badge-link {
  margin-top: 0 !important;
  line-height: 0;
}

.badge-link img {
  display: block;
  height: 20px;
  width: auto;
}

.cta-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.copy-btn {
  margin-top: 0.5rem;
  width: 1.9rem;
  height: 1.9rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.9rem;
  transition:
    border-color var(--transition),
    color var(--transition);
}

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

.copy-btn.copied {
  border-color: var(--accent);
  color: var(--accent);
}

/* ===== Contributions ===== */
.contributions-grid {
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
}

.contrib-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 0.75rem;
  text-decoration: none;
  color: var(--text);
  text-align: center;
  transition:
    transform var(--transition),
    border-color var(--transition);
}

.contrib-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.contrib-card strong {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.contrib-card span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===== Stack ===== */
.stack-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 0;
  margin: 1.5rem 0 0 0;
}

.stack-list li {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  color: var(--text);
}

/* ===== En curso ahora ===== */
.pr-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.6rem;
}

.pr-list li {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
}

.pr-list a {
  display: block;
  padding: 0.6rem 0.9rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pr-list a:hover {
  color: var(--accent-2);
}

/* ===== Contact ===== */
.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

.contact-link {
  display: inline-block;
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--accent-2);
  text-decoration: none;
}

.contact-link:hover {
  text-decoration: underline;
}

/* ===== Footer ===== */
.site-footer {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
}

.footer-updated {
  margin-top: 0.35rem;
}

/* ===== 404 ===== */
.not-found {
  min-height: calc(100vh - 8rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.5rem;
}

.not-found h1 {
  font-size: 4rem;
  color: var(--accent);
  margin: 0.5rem 0;
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .site-header {
    flex-wrap: wrap;
  }

  .site-nav {
    order: 3;
    width: 100%;
  }

  .section {
    padding: 2.5rem 0;
  }
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===== Print ===== */
@media print {
  .site-header,
  .skip-link,
  .counter-badge,
  .btn-icon {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.75em;
    color: #444;
  }

  .section {
    border-bottom: none;
    padding: 1.25rem 0;
  }
}