:root {
  --bg: #0b0f14;
  --fg: #e7eef2;
  --muted: #97a6b3;
  --card: #111823;
  --border: rgba(36, 26, 50, 0.6);
  --accent: #7000ff;
  --accent2: #b78cf9;
  --radius: 18px;
}
[data-theme="light"] {
  --bg: #f2f7f2;
  --fg: #0f1a13;
  --muted: #47634f;
  --card: #ffffff;
  --border: rgba(200, 200, 200, 0.6);
  --accent: #7000ff;
  --accent2: #b78cf9;
}

* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  padding: 0;
}
body {
  background: linear-gradient(rgba(11, 15, 20, 0.88), rgba(11, 15, 20, 0.88)), url("/img/dbh-wall.jpg") center / cover fixed;
  color: var(--fg);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  line-height: 1.55;
}
.i18n {
  display: none;
}
[data-lang="en"] .i18n[data-lang="en"] {
  display: block;
}
[data-lang="es"] .i18n[data-lang="es"] {
  display: block;
}
[data-lang="en"] li.i18n[data-lang="en"],
[data-lang="es"] li.i18n[data-lang="es"] {
  display: list-item;
}
.i18n.inline {
  display: none;
}
[data-lang="en"] .i18n.inline[data-lang="en"],
[data-lang="es"] .i18n.inline[data-lang="es"] {
  display: inline;
}
[data-theme="light"] body {
  background: linear-gradient(rgba(247, 247, 249, 0.92), rgba(247, 247, 249, 0.92)), url("/img/dbh-wall.jpg") center / cover fixed;
}

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

.container {
  width: min(1100px, calc(100% - 48px));
  margin: 0 auto;
  padding: 28px 0 60px;
}
.section {
  margin-top: 28px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: color-mix(in oklab, var(--bg) 84%, transparent);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}
.nav-inner {
  padding: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.nav-links {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
}
.nav-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--fg);
  font-weight: 700;
  letter-spacing: 0.2px;
  padding: 10px 0;
}
.brand-logo {
  width: 30px;
  height: 30px;
  display: block;
}
.logo-light {
  display: none;
}
[data-theme="light"] .logo-dark {
  display: none;
}
[data-theme="light"] .logo-light {
  display: block;
}

.nav a {
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--muted);
}
.nav a.active,
.nav a:hover {
  color: var(--fg);
  background: color-mix(in oklab, var(--card) 70%, transparent);
  text-decoration: none;
}

.hero {
  margin-top: 22px;
  padding: 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: radial-gradient(700px 260px at 0% 0%, rgba(38, 179, 163, 0.28), transparent 60%), radial-gradient(600px 240px at 80% 0%, rgba(112, 0, 255, 0.22), transparent 62%), var(--card);
}

h1 {
  font-size: clamp(30px, 5vw, 44px);
  margin: 0 0 8px;
}
h2 {
  font-size: 22px;
  margin: 28px 0 12px;
}
p {
  margin: 0 0 12px;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}

.card {
  grid-column: span 6;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in oklab, var(--card) 92%, black);
}
.card.stat h3 {
  font-size: 22px;
}
.card.stat .eyebrow {
  margin-bottom: 6px;
}

@media (max-width: 820px) {
  .card {
    grid-column: span 12;
  }
}
@media (max-width: 680px) {
  .nav-inner {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }
  .brand {
    justify-content: center;
  }
  .nav-links {
    justify-content: center;
  }
  .nav-actions {
    justify-content: center;
  }
}
.timeline {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}
.timeline .card {
  grid-column: span 12;
}

.list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}
.list li {
  margin: 6px 0;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 11px;
  color: var(--muted);
  margin: 0 0 4px;
}
.taglist {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 0;
}
.pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--fg);
  background: rgba(255, 255, 255, 0.04);
}
.taglist-expert .pill {
  border-color: color-mix(in oklab, #7000ff 60%, var(--border));
  background: color-mix(in oklab, #7000ff 20%, rgba(255, 255, 255, 0.04));
}
.taglist-advanced .pill {
  border-color: color-mix(in oklab, #26b3a3 60%, var(--border));
  background: color-mix(in oklab, #26b3a3 18%, rgba(255, 255, 255, 0.04));
}
.taglist-proficient .pill {
  border-color: color-mix(in oklab, #5aa7ff 60%, var(--border));
  background: color-mix(in oklab, #5aa7ff 16%, rgba(255, 255, 255, 0.04));
}
.taglist-learning .pill {
  border-color: color-mix(in oklab, #f0c06b 60%, var(--border));
  background: color-mix(in oklab, #f0c06b 18%, rgba(255, 255, 255, 0.04));
}
.taglist-projects .pill {
  border-color: color-mix(in oklab, #26b3a3 60%, var(--border));
  background: color-mix(in oklab, #26b3a3 18%, rgba(255, 255, 255, 0.04));
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.badge {
  padding: 6px 10px;
  border: 1px solid color-mix(in oklab, var(--accent) 55%, var(--border));
  border-radius: 999px;
  color: var(--fg);
  background: color-mix(in oklab, var(--accent) 18%, rgba(255, 255, 255, 0.04));
  font-size: 13px;
}

.btns {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--fg);
}
.btn:hover {
  text-decoration: none;
  background: color-mix(in oklab, var(--card) 85%, var(--accent) 15%);
  border-color: color-mix(in oklab, var(--accent) 35%, var(--border));
}
.btn.ghost {
  background: transparent;
}
.btn.ghost:hover {
  background: color-mix(in oklab, var(--card) 90%, transparent);
}
.toggle {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 2px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card) 90%, transparent);
  color: var(--fg);
  cursor: pointer;
  transition: background 0.5s ease-in, border-color 0.5s ease-in, box-shadow 0.5s ease-in;
}
.toggle:hover {
  background: color-mix(in oklab, var(--card) 80%, var(--accent) 10%);
  border-color: color-mix(in oklab, var(--accent) 30%, var(--border));
}
.toggle .opt {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  height: 28px;
  padding: 0 8px;
  border-radius: 999px;
  font-size: 14px;
  opacity: 0.7;
  transition: background 0.5s ease-in, border-color 0.5s ease-in, opacity 0.5s ease-in, transform 0.5s ease-in;
}
[data-theme="light"] .theme-toggle .opt[data-value="light"],
[data-theme="dark"] .theme-toggle .opt[data-value="dark"] {
  background: color-mix(in oklab, var(--accent) 28%, transparent);
  border: 1px solid color-mix(in oklab, var(--accent) 60%, var(--border));
  opacity: 1;
  transform: translateY(-1px);
  animation: toggle-border 0.5s ease-in;
}
[data-lang="es"] .lang-toggle .opt[data-value="es"],
[data-lang="en"] .lang-toggle .opt[data-value="en"] {
  background: color-mix(in oklab, #7000ff 18%, transparent);
  border: 1px solid color-mix(in oklab, #7000ff 60%, var(--border));
  opacity: 1;
  transform: translateY(-1px);
  animation: toggle-border 0.5s ease-in;
}

@keyframes toggle-border {
  0% {
    box-shadow: 0 0 0 0 color-mix(in oklab, var(--accent) 0%, transparent);
  }
  100% {
    box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 35%, transparent);
  }
}
.btn.primary {
  background: #7000ff;
  border-color: #7000ff;
  color: #ffffff;
}
.btn.primary:hover {
  background: color-mix(in oklab, #7000ff 85%, white 15%);
  border-color: color-mix(in oklab, #7000ff 85%, white 15%);
}
.small {
  font-size: 13px;
  color: var(--muted);
}
.footer {
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}