/* Base */
:root {
  --bg: #0b1020;
  --panel: #11162a;
  --text: #e7e9ee;
  --muted: #a8b0c2;
  --accent: #8b5cf6;
  --ring: rgba(139,92,246,0.35);
  --shadow: 0 10px 30px rgba(2,8,23,0.35);
}
:root.light {
  --bg: #f8fafc;
  --panel: #ffffff;
  --text: #0b1220;
  --muted: #475569;
  --accent: #0ea5e9;
  --ring: rgba(14,165,233,0.25);
  --shadow: 0 12px 24px rgba(2,6,23,0.08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(80rem 60rem at 20% -20%, rgba(139,92,246,0.12), transparent 40%),
              radial-gradient(60rem 40rem at 120% 0%, rgba(139,92,246,0.10), transparent 35%),
              var(--bg);
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(139,92,246,0.4) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139,92,246,0.3) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(139,92,246,0.2) 0%, transparent 50%);
  animation: flames 6s ease-in-out infinite alternate;
  z-index: -1;
  pointer-events: none;
}

@keyframes flames {
  0% {
    opacity: 0.3;
    transform: scale(1);
  }
  100% {
    opacity: 0.6;
    transform: scale(1.1);
  }
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }

/* Layout */
.container { width: min(1100px, 92%); margin: 0 auto; }
.section { padding: 4rem 0; }
.section h2 { font-size: 1.75rem; margin: 0 0 1rem; }
.lead { color: var(--muted); font-size: 1.125rem; }
.tags { list-style: none; display: flex; gap: .5rem; padding: 0; margin: 1rem 0 0; flex-wrap: wrap; }
.tags li { background: var(--panel); border: 1px solid rgba(148,163,184,0.15); padding: .4rem .6rem; border-radius: .5rem; color: var(--muted); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(180%) blur(8px);
  background: color-mix(in hsl, var(--bg), transparent 70%);
  border-bottom: 1px solid rgba(148,163,184,0.12);
}
.site-header .brand { display: inline-flex; align-items: center; justify-content: center; width: 2rem; height: 2rem; border-radius: .5rem; background: var(--accent); color: white; font-weight: 700; margin: .6rem .5rem .6rem 1rem; }
.nav { display: flex; gap: 1rem; align-items: center; padding: .5rem 1rem; }
.nav a { color: var(--text); opacity: .85; }
.nav a:hover { opacity: 1; }
#themeToggle { margin-left: auto; width: 2rem; height: 2rem; border-radius: .5rem; background: var(--panel); border: 1px solid rgba(148,163,184,0.15); cursor: pointer; position: relative; }
#themeToggle::before { content: ""; position: absolute; inset: .4rem; border-radius: .35rem; background: var(--accent); opacity: .85; transition: transform .25s;
}
:root.light #themeToggle::before { transform: translateX(0); }
:root:not(.light) #themeToggle::before { transform: translateX(0); }

/* Hero */
.hero { display: grid; grid-template-columns: 1.1fr .9fr; gap: 2rem; padding: 4rem 0; align-items: center; }
.hero h1 { font-size: clamp(2rem, 3.5vw, 3rem); margin: 0 0 .75rem; }
.hero .actions { display: flex; gap: .75rem; margin-top: 1rem; }
.btn { display: inline-flex; align-items: center; gap: .5rem; padding: .7rem 1rem; border-radius: .6rem; border: 1px solid rgba(148,163,184,0.18); background: var(--panel); color: var(--text); box-shadow: var(--shadow); }
.btn.primary { background: linear-gradient(180deg, color-mix(in hsl, var(--accent), white 12%), var(--accent)); color: white; border: none; }
.hero-media { justify-self: center; filter: drop-shadow(0 10px 30px rgba(2,8,23,0.35)); }
.hero-media img { width: clamp(140px, 35vw, 260px); }

/* Grid */
.grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 1rem; }
.card { grid-column: span 12; background: var(--panel); border: 1px solid rgba(148,163,184,0.12); border-radius: .8rem; padding: 1rem; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: .5rem; }
.card h3 { margin: .2rem 0; font-size: 1.125rem; }
.card p { margin: 0; color: var(--muted); }
.card .meta { display: flex; gap: .5rem; align-items: center; color: var(--muted); font-size: .9rem; }
.card .links { display: flex; gap: .5rem; margin-top: .5rem; }
.card .taglist { display: flex; flex-wrap: wrap; gap: .4rem; }
.card .taglist span { background: rgba(148,163,184,0.12); border: 1px solid rgba(148,163,184,0.15); padding: .25rem .45rem; border-radius: .45rem; color: var(--muted); font-size: .85rem; }

@media (min-width: 700px) {
  .card { grid-column: span 6; }
}
@media (min-width: 1000px) {
  .card { grid-column: span 4; }
}

/* Timeline */
.timeline { display: grid; gap: 1rem; }
.timeline article { background: var(--panel); border: 1px solid rgba(148,163,184,0.12); border-radius: .8rem; padding: 1rem; box-shadow: var(--shadow); }
.timeline h3 { margin: 0 0 .25rem; }
.timeline .meta { color: var(--muted); font-size: .9rem; }

/* Panels */
.panels-section { padding: 4rem 0; }
.panels-grid { 
  display: grid; 
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
  gap: 2rem; 
  margin-top: 2rem; 
}
.panel { 
  background: var(--panel); 
  border: 1px solid rgba(148,163,184,0.12); 
  border-radius: 1rem; 
  padding: 2rem; 
  box-shadow: var(--shadow); 
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.panel:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(2,8,23,0.4);
}
.panel-icon { 
  font-size: 3rem; 
  margin-bottom: 1rem; 
  display: block;
}
.panel h3 { 
  margin: 0 0 1rem; 
  font-size: 1.25rem; 
  color: var(--text);
}
.panel p { 
  color: var(--muted); 
  line-height: 1.6; 
  margin: 0 0 1.5rem;
}
.panel-link { 
  display: inline-flex; 
  align-items: center; 
  gap: .5rem; 
  padding: .6rem 1.2rem; 
  background: var(--accent); 
  color: white; 
  border-radius: .6rem; 
  text-decoration: none; 
  font-weight: 500;
  transition: background 0.2s ease;
}
.panel-link:hover { 
  background: color-mix(in hsl, var(--accent), white 15%); 
}

/* Social Media */
.social-section { 
  padding: 3rem 0 4rem; 
  text-align: center; 
}
.social-section h2 { 
  margin-bottom: 2rem; 
  font-size: 1.5rem; 
}
.social-links { 
  display: flex; 
  justify-content: center; 
  gap: 2rem; 
  flex-wrap: wrap; 
}
.social-link { 
  display: flex; 
  flex-direction: column; 
  align-items: center; 
  gap: 0.75rem; 
  padding: 1.5rem; 
  background: var(--panel); 
  border: 1px solid rgba(148,163,184,0.12); 
  border-radius: 1rem; 
  text-decoration: none; 
  color: var(--text); 
  transition: all 0.2s ease; 
  min-width: 120px;
}
.social-link:hover { 
  transform: translateY(-2px); 
  box-shadow: var(--shadow); 
  border-color: var(--accent); 
}
.social-icon { 
  width: 2.5rem; 
  height: 2.5rem; 
  color: var(--accent); 
}
.social-link span { 
  font-weight: 500; 
  font-size: 0.9rem; 
}

/* Footer */
.site-footer { 
  border-top: 1px solid rgba(148,163,184,0.12); 
  padding: 1.5rem 4%; 
  display: flex; 
  justify-content: space-between; 
  align-items: center; 
  color: var(--muted); 
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-contact { 
  display: flex; 
  align-items: center; 
}
.footer-email { 
  color: var(--muted); 
  text-decoration: none; 
  font-size: 0.9rem;
  transition: color 0.2s ease;
}
.footer-email:hover { 
  color: var(--accent); 
}
.backtotop { 
  color: var(--muted); 
}

@media (max-width: 768px) {
  .site-footer {
    flex-direction: column;
    text-align: center;
    gap: 0.5rem;
  }
}

/* Utilities */
.accent { color: var(--accent); }
.hidden { display: none; }

/* Light adjustments */
:root.light body { background: radial-gradient(1200px 800px at 0% -10%, rgba(14,165,233,0.08), transparent 35%), var(--bg); }