*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:               #f8f7f4;
  --surface:          #ffffff;
  --hero-bg:          #0f172a;
  --accent:           #6366f1;
  --accent-d:         #4f46e5;
  --text:             #111827;
  --muted:            #6b7280;
  --border:           #e5e7eb;
  --tag-bg:           #f1f5f9;
  --tag-border:       #e2e8f0;
  --tag-text:         #334155;
  --ctrl-bg:          rgba(15,23,42,0.75);
  --ctrl-text:        #e2e8f0;
  --ctrl-border:      #334155;
  --icon-blue:        #e0e7ff;
  --icon-blue-color:  #4338ca;
  --icon-green:       #d1fae5;
  --icon-green-color: #065f46;
  --icon-purple:      #ede9fe;
  --icon-purple-color:#6d28d9;
  --icon-amber:       #fef3c7;
  --icon-amber-color: #92400e;
  --card-shadow:      0 8px 28px rgba(99,102,241,0.11);
  --radius:           10px;
}

[data-theme="dark"] {
  --bg:               #0f172a;
  --surface:          #1e293b;
  --hero-bg:          #020617;
  --accent:           #818cf8;
  --accent-d:         #6366f1;
  --text:             #e2e8f0;
  --muted:            #94a3b8;
  --border:           #334155;
  --tag-bg:           #0f172a;
  --tag-border:       #334155;
  --tag-text:         #cbd5e1;
  --ctrl-bg:          rgba(2,6,23,0.85);
  --ctrl-text:        #e2e8f0;
  --ctrl-border:      #475569;
  --icon-blue:        #1e1b4b;
  --icon-blue-color:  #a5b4fc;
  --icon-green:       #064e3b;
  --icon-green-color: #6ee7b7;
  --icon-purple:      #2e1065;
  --icon-purple-color:#c4b5fd;
  --icon-amber:       #451a03;
  --icon-amber-color: #fcd34d;
  --card-shadow:      0 8px 28px rgba(0,0,0,0.4);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:               #0f172a;
    --surface:          #1e293b;
    --hero-bg:          #020617;
    --accent:           #818cf8;
    --accent-d:         #6366f1;
    --text:             #e2e8f0;
    --muted:            #94a3b8;
    --border:           #334155;
    --tag-bg:           #0f172a;
    --tag-border:       #334155;
    --tag-text:         #cbd5e1;
    --ctrl-bg:          rgba(2,6,23,0.85);
    --ctrl-text:        #e2e8f0;
    --ctrl-border:      #475569;
    --icon-blue:        #1e1b4b;
    --icon-blue-color:  #a5b4fc;
    --icon-green:       #064e3b;
    --icon-green-color: #6ee7b7;
    --icon-purple:      #2e1065;
    --icon-purple-color:#c4b5fd;
    --icon-amber:       #451a03;
    --icon-amber-color: #fcd34d;
    --card-shadow:      0 8px 28px rgba(0,0,0,0.4);
  }
}

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  font-family: 'Inter', system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  transition: background 0.2s, color 0.2s;
  overflow-x: clip;
}

* { overflow-wrap: break-word; min-width: 0; }

.controls {
  position: fixed;
  top: 0.85rem;
  right: 1rem;
  display: flex;
  gap: 0.4rem;
  z-index: 200;
}

.ctrl-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 32px;
  min-width: 32px;
  padding: 0 0.6rem;
  border-radius: 99px;
  border: 1px solid var(--ctrl-border);
  background: var(--ctrl-bg);
  color: var(--ctrl-text);
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: border-color 0.15s, color 0.15s;
}

.ctrl-btn:hover { border-color: var(--accent); color: var(--accent); }
.ctrl-btn svg { width: 15px; height: 15px; }

.hero {
  background: radial-gradient(ellipse at 68% 44%, #1c1847 0%, #0f172a 62%);
  color: #fff;
  padding: 4rem 1.5rem 3.5rem;
}

[data-theme="dark"] .hero {
  background: radial-gradient(ellipse at 68% 44%, #130f33 0%, #020617 62%);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .hero {
    background: radial-gradient(ellipse at 68% 44%, #130f33 0%, #020617 62%);
  }
}

.hero-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.hero-text { flex: 1; }

.hero h1 {
  font-family: 'Fraunces', Georgia, serif;
  font-size: clamp(1.65rem, 6vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.4rem;
}

.hero .subtitle {
  font-family: 'Syne', system-ui, sans-serif;
  font-size: 0.82rem;
  color: #94a3b8;
  margin-bottom: 1.2rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
}

.hero .tagline {
  font-size: 1.05rem;
  color: #cbd5e1;
  max-width: 520px;
  margin-bottom: 1.8rem;
  line-height: 1.75;
}

.icon-links { display: flex; gap: 1rem; }

.icon-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid #334155;
  color: #94a3b8;
  text-decoration: none;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.icon-link:hover { border-color: var(--accent); color: #fff; background: var(--accent); }
.icon-link svg { width: 19px; height: 19px; }

.hero-photo {
  flex-shrink: 0;
  padding: 3px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1e293b 0%, #2d3f55 50%, #1e293b 100%);
}

.hero-photo img {
  width: 162px;
  height: 162px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 38%;
  border: 3px solid #0f172a;
  display: block;
}

[data-theme="dark"] .hero-photo img { border-color: #020617; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .hero-photo img { border-color: #020617; }
}

@media (max-width: 600px) {
  .hero-inner { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
  .hero-photo { order: -1; }
  .hero-photo img { width: 116px; height: 116px; }
}

.container { max-width: 960px; margin: 0 auto; padding: 0 1.5rem; }

section { padding: 3.5rem 0; }
section + section { border-top: 1px solid var(--border); }

.section-label {
  font-family: 'Syne', system-ui, sans-serif;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.75rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.25rem;
  transition: background 0.2s, border-color 0.2s, transform 0.15s, box-shadow 0.15s;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--card-shadow);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
}

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  transition: background 0.2s;
}

.card-icon svg { width: 22px; height: 22px; flex-shrink: 0; }

.blue   { background: var(--icon-blue);   color: var(--icon-blue-color); }
.green  { background: var(--icon-green);  color: var(--icon-green-color); }
.purple { background: var(--icon-purple); color: var(--icon-purple-color); }
.amber  { background: var(--icon-amber);  color: var(--icon-amber-color); }

.card h3 { font-family: 'Syne', system-ui, sans-serif; font-size: 0.95rem; font-weight: 700; margin-bottom: 0.4rem; }
.card p  { font-size: 0.875rem; color: var(--muted); line-height: 1.6; }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  align-items: start;
}

@media (max-width: 600px) {
  .skills-grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
}

.skill-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: background 0.2s, border-color 0.2s;
}

.skill-block:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }

.skill-top { padding: 1.25rem 1.25rem 1rem; }
.skill-top h3 { font-family: 'Syne', system-ui, sans-serif; font-size: 1rem; font-weight: 700; margin-bottom: 0.3rem; }
.skill-top p  { font-size: 0.85rem; color: var(--muted); line-height: 1.6; }

details { border-top: 1px solid var(--border); }

details summary {
  padding: 0.7rem 1.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  cursor: pointer;
  user-select: none;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: background 0.1s;
}

details summary::-webkit-details-marker { display: none; }

details summary::before {
  content: "›";
  font-size: 1rem;
  transition: transform 0.2s;
  display: inline-block;
}

details[open] summary::before { transform: rotate(90deg); }
details summary:hover { background: color-mix(in srgb, var(--surface) 80%, var(--border)); }

.tech-group { padding: 0.5rem 1.25rem 0; }

.tech-group-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--muted);
  margin-bottom: 0.45rem;
}

.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.tag {
  display: inline-block;
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  border-radius: 99px;
  padding: 0.2rem 0.65rem;
  font-size: 0.78rem;
  color: var(--tag-text);
  font-weight: 500;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

details > *:last-child { padding-bottom: 1.25rem; }

.contact-section {
  background: var(--hero-bg);
  text-align: center;
  border-top: none;
  transition: background 0.2s;
}

section + .contact-section { border-top: none; }

.contact-section h2 {
  font-family: 'Fraunces', Georgia, serif;
  color: #f8fafc;
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
}

.contact-section .contact-desc {
  color: #94a3b8;
  font-size: 0.95rem;
  margin-bottom: 1.75rem;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

.contact-icon-links { display: flex; gap: 1.25rem; justify-content: center; }

.contact-icon-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid #334155;
  color: #94a3b8;
  text-decoration: none;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.contact-icon-link:hover { border-color: var(--accent); color: #fff; background: var(--accent); }
.contact-icon-link svg { width: 22px; height: 22px; }

footer {
  background: var(--hero-bg);
  border-top: 1px solid rgba(255,255,255,0.06);
  text-align: center;
  padding: 1.5rem 1rem;
  font-size: 0.8rem;
  color: #64748b;
  transition: background 0.2s;
}