:root {
  --v0: #e0d1ff;
  --v1: #c7b0fd;
  --v2: #ab8efa;
  --v3: #9266f5;
  --v4: #7a4ade;
  --v5: #5b2db9;
  --pink: #ff8abe;
  --bg: #140f24;
  --bg2: #1b1436;
  --panel: #221a40;
  --panel2: #2a2150;
  --text: #ece8fb;
  --muted: #a89fce;
  --line: #382c63;
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Code", Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background:
    radial-gradient(1100px 600px at 80% -10%, rgba(146, 102, 245, 0.25), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(255, 138, 190, 0.10), transparent 55%),
    var(--bg);
  line-height: 1.6;
}
a { color: var(--v1); text-decoration: none; }
a:hover { color: var(--v0); }
h1, h2, h3 { line-height: 1.2; }
kbd {
  font-family: var(--mono); font-size: 0.85em; background: var(--panel2);
  border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px; padding: 1px 6px;
}

/* ---------- NAV ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 18px;
  padding: 12px 22px;
  background: rgba(20, 15, 36, 0.82); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 1.15rem; color: var(--text); }
.brand-octo { font-size: 1.3rem; }
.brand-name { background: linear-gradient(90deg, var(--v1), var(--pink)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav-links { display: flex; gap: 18px; margin-left: auto; align-items: center; font-size: 0.95rem; }
.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--v0); }
.nav-ext { color: var(--v2) !important; }
.lang-toggle { display: flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.lang-toggle button {
  background: transparent; color: var(--muted); border: 0; padding: 5px 12px; cursor: pointer;
  font-weight: 700; font-size: 0.8rem;
}
.lang-toggle button.active { background: linear-gradient(90deg, var(--v4), var(--v3)); color: #fff; }

/* ---------- HERO ---------- */
.hero {
  display: grid; grid-template-columns: 320px 1fr; gap: 40px; align-items: center;
  max-width: 1100px; margin: 0 auto; padding: 70px 24px 50px;
}
.hero-art { display: flex; justify-content: center; }
.mascot { width: 280px; height: 280px; filter: drop-shadow(0 18px 40px rgba(122, 74, 222, 0.5)); }
.hero-title { font-size: 3.6rem; margin: 0 0 6px; letter-spacing: -1px;
  background: linear-gradient(90deg, var(--v0), var(--v2), var(--pink)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-tag { font-size: 1.25rem; color: var(--muted); margin: 0 0 22px; max-width: 540px; }
.hero-tag b { color: var(--v0); }
.install {
  display: inline-flex; align-items: center; gap: 10px; background: #0e0a1c;
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; margin-bottom: 18px;
}
.install code { font-family: var(--mono); color: var(--v0); }
.copy { background: var(--panel2); border: 1px solid var(--line); color: var(--v1); border-radius: 7px; cursor: pointer; padding: 3px 9px; }
.copy:hover { background: var(--v4); color: #fff; }
.badges { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.badges img { height: 20px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 11px 20px; border-radius: 10px; font-weight: 700;
  border: 1px solid var(--line); color: var(--text); background: var(--panel);
}
.btn:hover { border-color: var(--v3); color: var(--v0); }
.btn-primary { background: linear-gradient(90deg, var(--v4), var(--v3)); border: 0; color: #fff; }
.btn-primary:hover { color: #fff; filter: brightness(1.08); }
.btn-ghost { background: transparent; }

/* ---------- SECTIONS ---------- */
.section { max-width: 1000px; margin: 0 auto; padding: 64px 24px; }
.band { background: linear-gradient(180deg, rgba(43, 33, 80, 0.4), transparent); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section.band { max-width: none; }
.section.band > * { max-width: 1000px; margin-left: auto; margin-right: auto; }
.section-title { font-size: 2rem; text-align: center; margin: 0 0 8px; }
.section-sub { text-align: center; color: var(--muted); max-width: 680px; margin: 0 auto 36px; }
.muted { color: var(--muted); }
.center { text-align: center; }

/* ---------- ORIGIN ---------- */
.origin { max-width: 1000px; margin: 0 auto; padding: 50px 24px; display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; }
.origin h2 { font-size: 1.8rem; margin: 0 0 12px; }
.origin-text p { color: var(--muted); margin: 0 0 10px; }
.origin-text b { color: var(--v0); }
.origin-badge { font-size: 5rem; animation: float 5s ease-in-out infinite; }

/* ---------- FLOW DIAGRAM ---------- */
.flow {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 6px; margin: 0 auto 28px; max-width: 920px;
}
.flow.mini { margin-top: 14px; }
.node {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
  background: var(--panel); color: var(--text); border: 1px solid var(--line);
  border-radius: 12px; padding: 12px 16px; font-weight: 600; font-size: 0.95rem;
  font-family: var(--sans); transition: transform 0.12s, border-color 0.12s, box-shadow 0.12s;
}
.node:hover { transform: translateY(-2px); border-color: var(--v3); }
.node.active { border-color: var(--v2); box-shadow: 0 0 0 2px rgba(171, 142, 250, 0.5); background: var(--panel2); }
.node .node-ic { font-size: 1.1rem; }
.node.done { background: linear-gradient(90deg, var(--v4), var(--v3)); border: 0; color: #fff; }
.node.sm { padding: 9px 13px; font-size: 0.85rem; cursor: default; }
.branch { display: inline-flex; flex-direction: column; gap: 6px; }
.node.alt { padding: 8px 14px; font-size: 0.88rem; }
.arrow { width: 26px; height: 3px; border-radius: 3px; position: relative; background: var(--line); overflow: hidden; }
.arrow::after {
  content: ""; position: absolute; inset: 0; width: 40%;
  background: linear-gradient(90deg, transparent, var(--v2), transparent);
  animation: flow 1.6s linear infinite;
}
@keyframes flow { from { left: -40%; } to { left: 100%; } }

.stage-detail {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 22px 24px; max-width: 760px; margin: 0 auto; min-height: 120px;
}
.stage-detail h3 { margin: 0 0 8px; color: var(--v1); }
.stage-detail p { margin: 0 0 12px; color: var(--text); }
.stage-detail pre { margin: 0; }
.hidden { display: none !important; }

.swarm-note { max-width: 920px; margin: 40px auto 0; text-align: center; }
.swarm-note h3 { color: var(--v1); margin-bottom: 6px; }

/* ---------- CODE ---------- */
.codeblock, pre code { font-family: var(--mono); }
.codeblock {
  background: #0e0a1c; border: 1px solid var(--line); border-radius: 12px;
  padding: 16px 18px; overflow-x: auto; color: var(--v0); font-size: 0.9rem;
  max-width: 760px; margin: 0 auto;
}
.codeblock code { white-space: pre; }

/* ---------- CARDS ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 0 auto 18px; max-width: 900px; }
.cards.grid4 { grid-template-columns: repeat(4, 1fr); max-width: 1000px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 18px 18px; }
.card:hover { border-color: var(--v3); }
.card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.92rem; }

/* ---------- VIDEO ---------- */
.video-wrap { max-width: 880px; margin: 0 auto; border-radius: 16px; overflow: hidden; border: 1px solid var(--line); box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45); }
.video-wrap video { width: 100%; display: block; background: #000; }

/* ---------- STEPS / TABS ---------- */
.steps { max-width: 760px; margin: 0 auto 30px; display: flex; flex-direction: column; gap: 14px; }
.step { display: flex; gap: 14px; align-items: flex-start; }
.step-n { flex: none; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; color: #fff; background: linear-gradient(135deg, var(--v3), var(--v4)); margin-top: 2px; }
.step b { display: block; margin-bottom: 6px; }
.step pre { margin: 0; }
.tabs { display: flex; gap: 8px; justify-content: center; margin: 0 auto 14px; }
.tab { background: var(--panel); border: 1px solid var(--line); color: var(--muted); border-radius: 999px; padding: 7px 18px; cursor: pointer; font-weight: 700; }
.tab.active { background: linear-gradient(90deg, var(--v4), var(--v3)); color: #fff; border: 0; }

/* ---------- FOOTER ---------- */
.footer { text-align: center; padding: 50px 24px 60px; border-top: 1px solid var(--line); margin-top: 30px; }
.footer-octo { font-size: 2.4rem; animation: float 5s ease-in-out infinite; }
.footer-by { font-size: 1.1rem; margin: 8px 0 4px; }
.footer-by a { font-weight: 700; }
.footer-links { color: var(--muted); }
.footer-lic { color: var(--muted); font-size: 0.85rem; margin-top: 6px; }

/* ---------- MASCOT ANIMATION ---------- */
.mascot-float { animation: float 4.5s ease-in-out infinite; transform-origin: 130px 130px; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.tentacles .t { transform-origin: 130px 150px; animation: wiggle 3s ease-in-out infinite; }
.tentacles .t1 { animation-delay: 0s; }
.tentacles .t2 { animation-delay: 0.25s; }
.tentacles .t3 { animation-delay: 0.5s; }
.tentacles .t4 { animation-delay: 0.75s; }
.tentacles .t5 { animation-delay: 1s; }
@keyframes wiggle { 0%, 100% { transform: rotate(-2.5deg); } 50% { transform: rotate(2.5deg); } }
.glasses .pupil { animation: blink 5s infinite; transform-origin: center; }
@keyframes blink { 0%, 92%, 100% { transform: scaleY(1); } 96% { transform: scaleY(0.1); } }

@media (prefers-reduced-motion: reduce) {
  .mascot-float, .tentacles .t, .glasses .pupil, .origin-badge, .footer-octo { animation: none; }
  .arrow::after { animation: none; }
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; text-align: center; padding-top: 40px; }
  .hero-art { order: -1; }
  .mascot { width: 220px; height: 220px; }
  .hero-tag { margin-left: auto; margin-right: auto; }
  .cta, .badges, .install { justify-content: center; }
  .cards, .cards.grid4 { grid-template-columns: 1fr 1fr; }
  .origin { grid-template-columns: 1fr; text-align: center; }
  .origin-badge { margin: 0 auto; }
  .nav-links { display: none; }
}
@media (max-width: 520px) {
  .cards, .cards.grid4 { grid-template-columns: 1fr; }
  .hero-title { font-size: 2.8rem; }
  .arrow { width: 16px; }
  .node { padding: 9px 12px; font-size: 0.85rem; }
}

/* ===================== DEEP-DIVE PAGE (fluxo.html) ===================== */
.deep { max-width: 920px; margin: 0 auto; padding: 54px 24px; }
.deep-title { font-size: 2.2rem; text-align: center; margin: 0 0 10px; }
.deep-intro { color: var(--muted); text-align: center; max-width: 720px; margin: 0 auto 30px; }
.back-link { display: inline-block; margin-bottom: 8px; color: var(--muted); }

.sim { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 20px 20px 16px; }
.sim-feed { display: flex; flex-direction: column; gap: 14px; min-height: 220px; }
.sim-empty { color: var(--muted); text-align: center; margin: auto; }

.bubble { display: flex; gap: 12px; align-items: flex-start; animation: rise 0.35s ease both; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.bubble .avatar {
  font-size: 1.5rem; flex: none; width: 44px; height: 44px; display: grid; place-items: center;
  border-radius: 50%; background: var(--panel2); border: 1px solid var(--line);
}
.bubble .body { border-radius: 14px; padding: 12px 15px; max-width: 78%; }
.bubble.user { flex-direction: row-reverse; }
.bubble.user .body { background: linear-gradient(90deg, var(--v4), var(--v3)); color: #fff; }
.bubble.octo .body { background: var(--bg2); border: 1px solid var(--line); }
.bubble .tag {
  display: inline-block; font-size: 0.68rem; font-weight: 800; text-transform: uppercase;
  letter-spacing: 0.6px; color: var(--v1); background: rgba(146, 102, 245, 0.16);
  border: 1px solid var(--line); border-radius: 999px; padding: 2px 9px; margin-bottom: 8px;
}
.bubble .txt { margin: 0; }
.bubble pre {
  margin: 10px 0 0; background: #0e0a1c; border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 13px; overflow-x: auto; font-size: 0.83rem; color: var(--v0);
}
.bubble.user pre { background: rgba(0, 0, 0, 0.28); border-color: rgba(255, 255, 255, 0.2); color: #fff; }

.sim-controls { display: flex; gap: 10px; align-items: center; justify-content: center; margin-top: 18px; flex-wrap: wrap; }
.sim-progress { color: var(--muted); font-size: 0.9rem; min-width: 92px; text-align: center; }
.btn.sm { padding: 8px 16px; font-size: 0.9rem; }
.btn.sm:disabled { opacity: 0.4; cursor: not-allowed; }

.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 44px auto 0; max-width: 920px; }
.compare .card h3 { display: flex; align-items: center; gap: 8px; }
.compare ul { margin: 8px 0 0; padding-left: 18px; color: var(--muted); }
.compare li { margin-bottom: 8px; }
.compare li b { color: var(--v0); }
.compare-note { text-align: center; color: var(--muted); margin-top: 22px; }
.compare-note b { color: var(--v1); }

@media (max-width: 640px) {
  .compare { grid-template-columns: 1fr; }
  .bubble .body { max-width: 100%; }
}