:root {
  --bg: #080a0f;
  --bg-soft: #0d111a;
  --surface: rgba(17, 24, 39, 0.78);
  --surface-strong: rgba(20, 29, 45, 0.96);
  --card: rgba(15, 23, 42, 0.92);
  --card-hover: rgba(21, 32, 54, 0.96);
  --border: rgba(148, 163, 184, 0.16);
  --border-strong: rgba(148, 163, 184, 0.28);
  --accent: #34f59d;
  --accent2: #38bdf8;
  --accent3: #fb7185;
  --text: #eef4ff;
  --muted: #94a3b8;
  --muted-2: #64748b;
  --code-bg: #070b12;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.42);
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(52, 245, 157, 0.16), transparent 32rem),
    radial-gradient(circle at top right, rgba(56, 189, 248, 0.13), transparent 34rem),
    linear-gradient(180deg, #070912 0%, var(--bg) 48%, #06070b 100%);
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  overflow-x: hidden;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
}
header, nav, main { position: relative; z-index: 1; }
header {
  padding: 56px min(5vw, 56px) 34px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.76), rgba(15, 23, 42, 0.18));
}
.header-tag {
  width: fit-content;
  margin-bottom: 14px;
  padding: 7px 10px;
  border: 1px solid rgba(52, 245, 157, 0.23);
  border-radius: 999px;
  background: rgba(52, 245, 157, 0.07);
  color: var(--accent);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
h1 {
  max-width: 980px;
  font-family: 'Unbounded', sans-serif;
  font-size: clamp(32px, 6vw, 70px);
  font-weight: 900;
  line-height: 1.03;
  letter-spacing: -0.05em;
  background: linear-gradient(120deg, #f8fafc 0%, var(--accent) 36%, var(--accent2) 68%, #f8fafc 100%);
  background-size: 220% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: title-shimmer 7s linear infinite;
}
@keyframes title-shimmer { to { background-position: 220% center; } }
.header-sub {
  margin-top: 16px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.08em;
}
.header-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.78);
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.badge-neo4j { color: var(--accent); border-color: rgba(52, 245, 157, 0.25); }
.badge-mongo { color: var(--accent2); border-color: rgba(56, 189, 248, 0.25); }
.badge-oracle { color: var(--accent3); border-color: rgba(251, 113, 133, 0.25); }
.tabs-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 12px min(5vw, 56px);
  border-bottom: 1px solid var(--border);
  background: rgba(7, 10, 18, 0.84);
  backdrop-filter: blur(20px);
  scrollbar-width: none;
}
.tabs-nav::-webkit-scrollbar { display: none; }
.tab-btn {
  flex: 0 0 auto;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 11px 15px;
  text-transform: uppercase;
  transition: color .22s ease, background .22s ease, border-color .22s ease, transform .22s ease;
}
.tab-btn:hover { color: var(--text); background: rgba(148, 163, 184, 0.08); transform: translateY(-1px); }
.tab-btn.active { color: #04110a; background: var(--accent); border-color: rgba(52,245,157,.55); box-shadow: 0 10px 30px rgba(52,245,157,.18); }
.tab-btn.mongo.active { background: var(--accent2); border-color: rgba(56,189,248,.55); box-shadow: 0 10px 30px rgba(56,189,248,.18); }
.tab-btn.oracle.active { background: var(--accent3); border-color: rgba(251,113,133,.55); box-shadow: 0 10px 30px rgba(251,113,133,.18); }
.tab-num {
  display: inline-grid;
  place-items: center;
  min-width: 22px;
  height: 22px;
  margin-right: 8px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  font-size: 10px;
}
main { max-width: 1180px; margin: 0 auto; padding: 42px min(5vw, 56px) 90px; }
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: panel-in .32s ease both; }
@keyframes panel-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.lab-header {
  position: relative;
  overflow: hidden;
  margin-bottom: 28px;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(15,23,42,.96), rgba(15,23,42,.68));
  box-shadow: var(--shadow);
}
.lab-header::before {
  content: '';
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: linear-gradient(180deg, var(--accent), var(--accent2));
}
.lab-header.mongo::before { background: linear-gradient(180deg, var(--accent2), #6366f1); }
.lab-header.oracle::before { background: linear-gradient(180deg, var(--accent3), #f97316); }
.lab-num {
  margin-bottom: 10px;
  color: var(--accent);
  font-family: 'Unbounded', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.lab-header.mongo .lab-num { color: var(--accent2); }
.lab-header.oracle .lab-num { color: var(--accent3); }
.lab-title { font-family: 'Unbounded', sans-serif; font-size: clamp(20px, 3vw, 30px); font-weight: 800; line-height: 1.25; }
.lab-desc { max-width: 830px; margin-top: 10px; color: var(--muted); font-size: 13px; line-height: 1.75; }
.task {
  overflow: hidden;
  margin-bottom: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--card);
  box-shadow: 0 18px 50px rgba(0,0,0,.22);
  transition: border-color .22s ease, background .22s ease, transform .22s ease;
}
.task:hover { border-color: var(--border-strong); background: var(--card-hover); transform: translateY(-2px); }
.task-header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(90deg, rgba(255,255,255,.045), transparent);
}
.task-num {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  min-width: 34px;
  height: 34px;
  border: 1px solid rgba(52,245,157,.23);
  border-radius: 12px;
  background: rgba(52,245,157,.09);
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
}
.task.mongo .task-num { color: var(--accent2); border-color: rgba(56,189,248,.23); background: rgba(56,189,248,.09); }
.task.oracle .task-num { color: var(--accent3); border-color: rgba(251,113,133,.23); background: rgba(251,113,133,.09); }
.task-title { padding-top: 5px; color: var(--text); font-size: 14px; font-weight: 700; line-height: 1.55; }
.task-body { padding: 22px; }
.code-block {
  overflow: hidden;
  margin-bottom: 16px;
  border: 1px solid rgba(148,163,184,.16);
  border-radius: var(--radius-sm);
  background: var(--code-bg);
}
.code-lang {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-bottom: 1px solid rgba(148,163,184,.12);
  background: rgba(255,255,255,.035);
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.code-lang::before { content: ''; width: 9px; height: 9px; border-radius: 50%; background: currentColor; opacity: .75; }
pre {
  overflow-x: auto;
  padding: 18px;
  color: #d6deeb;
  font-size: 12.5px;
  line-height: 1.75;
  tab-size: 2;
}
pre code { font: inherit; color: inherit; }
code { font-family: 'JetBrains Mono', monospace; }
.kw { color: #ff79c6; font-weight: 700; }
.fn { color: #7dd3fc; }
.str { color: #fde68a; }
.num { color: #c4b5fd; }
.cm { color: #64748b; font-style: italic; }
.op { color: #fb7185; }
.prop { color: #86efac; }
.screenshot {
  overflow: hidden;
  margin-top: 14px;
  border: 1px solid rgba(148,163,184,.16);
  border-radius: var(--radius-sm);
  background: #05080d;
}
.screenshot-label {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(148,163,184,.12);
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.screenshot-label::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 18px currentColor; }
.task.mongo .screenshot-label::before { background: var(--accent2); }
.task.oracle .screenshot-label::before { background: var(--accent3); }
.screenshot img {
  display: block;
  width: 100%;
  max-height: 760px;
  object-fit: contain;
  background: #05080d;
}
.section-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 42px 0 28px;
  color: var(--muted-2);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .22em;
  text-transform: uppercase;
}
.section-divider::before, .section-divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: #070912; }
::-webkit-scrollbar-thumb { background: #263244; border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: #3a4960; }
@media (max-width: 760px) {
  header { padding-top: 34px; }
  .header-tag { font-size: 10px; letter-spacing: .12em; }
  .header-sub { font-size: 12px; }
  .badge { width: 100%; justify-content: center; }
  .tabs-nav { padding: 10px 14px; }
  .tab-btn { padding: 10px 12px; font-size: 11px; }
  main { padding: 26px 14px 56px; }
  .lab-header { padding: 22px 18px; border-radius: 18px; }
  .task { border-radius: 16px; }
  .task-header { padding: 15px; gap: 10px; }
  .task-body { padding: 15px; }
  .task-title { font-size: 13px; }
  pre { padding: 14px; font-size: 11.5px; line-height: 1.65; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .01ms !important; }
}