/* ============ SimLab — shared base ============ */

@property --border-angle {
  syntax: "<angle>";
  initial-value: 0deg;
  inherits: false;
}

:root {
  --bg: #060a12;
  --bg-2: #0a0f1c;
  --card: rgba(255, 255, 255, 0.035);
  --card-hover: rgba(255, 255, 255, 0.06);
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.15);
  --txt: #e9edf6;
  --mut: #8b95ab;
  --acc: #67e8f9;
  --acc-2: #a78bfa;
  --ok: #34d399;
  --err: #fb7185;
  --warn: #fbbf24;
  --grad: linear-gradient(135deg, #67e8f9, #818cf8 50%, #c084fc);
  --grad-glow: linear-gradient(135deg, rgba(103,232,249,0.25), rgba(129,140,248,0.25) 50%, rgba(192,132,252,0.25));
  --font-head: "Space Grotesk", "Inter", sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --radius: 18px;
  --shadow: 0 18px 50px -12px rgba(0, 0, 0, 0.55);
  --shadow-glow: 0 8px 40px -8px rgba(103, 232, 249, 0.15);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--txt);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(103, 232, 249, 0.25); }

/* scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #232c40; border-radius: 6px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: #2f3a55; }

/* ============ ambient background ============ */
.bg-orbs {
  position: fixed; inset: 0;
  z-index: -1;
  overflow: hidden;
  background:
    radial-gradient(1200px 550px at 75% -15%, rgba(129, 140, 248, 0.12), transparent 55%),
    radial-gradient(1000px 500px at 5% 5%, rgba(103, 232, 249, 0.09), transparent 55%),
    radial-gradient(800px 400px at 50% 100%, rgba(192, 132, 252, 0.06), transparent 55%),
    linear-gradient(180deg, var(--bg-2), var(--bg) 40%);
}
.bg-orbs::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, black 10%, transparent 75%);
}
.orb { position: absolute; border-radius: 50%; filter: blur(100px); opacity: 0.5; }
.orb-a { width: 520px; height: 520px; background: rgba(103, 232, 249, 0.12); top: -180px; left: -140px; animation: drift 26s ease-in-out infinite alternate; }
.orb-b { width: 600px; height: 600px; background: rgba(167, 139, 250, 0.11); top: -140px; right: -200px; animation: drift 32s ease-in-out infinite alternate-reverse; }
.orb-c { width: 460px; height: 460px; background: rgba(56, 189, 248, 0.08); bottom: -240px; left: 35%; animation: drift 38s ease-in-out infinite alternate; }
@keyframes drift {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(60px, 40px) scale(1.12); }
}

/* ============ layout ============ */
.container {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

/* ============ nav ============ */
.nav {
  position: sticky; top: 0;
  z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
  background: rgba(7, 11, 20, 0.65);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
}
html.hub .nav.scrolled {
  background: rgba(7, 11, 20, 0.88);
  border-color: rgba(103, 232, 249, 0.08);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3), 0 1px 0 rgba(103, 232, 249, 0.04);
}
.logo {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--txt);
  text-decoration: none;
}
.logo span {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.nav-right { display: flex; align-items: center; gap: 14px; }
.nav-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--mut);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 12px;
}
.nav-back {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.85rem; font-weight: 500;
  color: var(--mut);
  text-decoration: none;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.nav-back:hover { color: var(--txt); border-color: var(--line-strong); background: var(--card); }

/* ============ buttons ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 11px 22px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--txt);
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s, border-color 0.2s, opacity 0.2s;
  user-select: none;
}
.btn:hover { background: var(--card-hover); border-color: var(--line-strong); transform: translateY(-1px); }
.btn:active { transform: translateY(0px) scale(0.985); }
.btn:disabled { opacity: 0.45; pointer-events: none; }
.btn-primary {
  background: var(--grad);
  border: none;
  color: #06121a;
  box-shadow: 0 8px 28px -8px rgba(110, 168, 254, 0.55);
}
.btn-primary:hover { background: var(--grad); filter: brightness(1.08); box-shadow: 0 12px 32px -8px rgba(110, 168, 254, 0.7); }
.btn-ghost { background: transparent; }
.btn-sm { padding: 8px 14px; font-size: 0.82rem; border-radius: 10px; }

/* ==============================================================
   HUB PAGE — PREMIUM VISUAL EFFECTS
   ============================================================== */

/* ---- particle canvas ---- */
.hub-particles {
  position: fixed; inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ---- mouse-following glow ---- */
.hub-mouse-glow {
  position: fixed;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(103,232,249,0.07) 0%, rgba(129,140,248,0.03) 35%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.6s ease;
  will-change: left, top;
}
.hub-mouse-glow.visible { opacity: 1; }

/* ---- hero backdrop glow ---- */
.hub-hero-glow {
  position: absolute;
  width: 750px; height: 420px;
  left: 10%; top: 50%;
  transform: translateY(-50%);
  background: radial-gradient(ellipse, rgba(103,232,249,0.1) 0%, rgba(129,140,248,0.06) 35%, transparent 70%);
  pointer-events: none;
  filter: blur(50px);
  animation: hero-glow-breathe 8s ease-in-out infinite alternate;
  z-index: -1;
}

/* ---- floating geometries ---- */
.hub-geo {
  position: fixed;
  pointer-events: none;
  z-index: 0;
  opacity: 0;
  animation-fill-mode: forwards;
}
.hub-geo--ring {
  width: 65px; height: 65px;
  border: 1.5px solid rgba(103,232,249,0.08);
  border-radius: 14px;
  top: 16%; left: 5%;
  animation: geo-spin-drift 32s linear infinite, geo-fade-in 1.5s ease 0.3s forwards;
}
.hub-geo--circle {
  width: 42px; height: 42px;
  border: 1.5px solid rgba(167,139,250,0.1);
  border-radius: 50%;
  top: 30%; right: 7%;
  animation: geo-bob 18s ease-in-out infinite, geo-fade-in 1.5s ease 0.8s forwards;
}
.hub-geo--diamond {
  width: 32px; height: 32px;
  border: 1.5px solid rgba(192,132,252,0.07);
  bottom: 32%; left: 3.5%;
  transform: rotate(45deg);
  animation: geo-bob-alt 24s ease-in-out infinite, geo-fade-in 1.5s ease 1.2s forwards;
}
.hub-geo--dot-cluster {
  width: 5px; height: 5px;
  background: rgba(103,232,249,0.15);
  border-radius: 50%;
  top: 58%; right: 4.5%;
  box-shadow:
    14px 10px 0 rgba(167,139,250,0.12),
    -6px 18px 0 rgba(56,189,248,0.1),
    22px -6px 0 rgba(192,132,252,0.08);
  animation: geo-bob 20s ease-in-out infinite reverse, geo-fade-in 1.5s ease 1.6s forwards;
}
.hub-geo--cross {
  width: 28px; height: 28px;
  top: 72%; left: 8%;
  animation: geo-spin-slow 40s linear infinite, geo-fade-in 1.5s ease 2s forwards;
}
.hub-geo--cross::before,
.hub-geo--cross::after {
  content: "";
  position: absolute;
  background: rgba(56,189,248,0.09);
  border-radius: 1px;
}
.hub-geo--cross::before { width: 100%; height: 1.5px; top: 50%; transform: translateY(-50%); }
.hub-geo--cross::after  { width: 1.5px; height: 100%; left: 50%; transform: translateX(-50%); }

/* ============ hero (hub) ============ */
.hero {
  position: relative;
  padding: 96px 0 70px;
  text-align: left;
  z-index: 1;
}
.hero-kicker {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--acc);
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}
.hero-kicker::after {
  content: "█";
  margin-left: 3px;
  font-size: 0.72em;
  opacity: 0.7;
  animation: cursor-blink 1s step-end infinite;
}
.hero h1 {
  font-family: var(--font-head);
  font-size: clamp(2.6rem, 6.4vw, 4.6rem);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.03em;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(90deg, #67e8f9, #818cf8, #c084fc, #f472b6, #c084fc, #818cf8, #67e8f9);
  background-size: 300% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: text-shimmer 6s ease-in-out infinite;
}
.hero-sub {
  max-width: 560px;
  margin-top: 22px;
  color: var(--mut);
  font-size: 1.05rem;
}

/* hero staggered entrance */
html.hub .hero-kicker,
html.hub .hero h1,
html.hub .hero-sub,
html.hub .hero-stats {
  opacity: 0;
  transform: translateY(22px);
  animation: hero-enter 0.75s ease forwards;
}
html.hub .hero-kicker  { animation-delay: 0.1s; }
html.hub .hero h1       { animation-delay: 0.25s; }
html.hub .hero-sub      { animation-delay: 0.45s; }
html.hub .hero-stats    { animation-delay: 0.7s; }

/* hero stats */
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 46px;
}
.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-stat-num {
  font-family: var(--font-head);
  font-size: 1.65rem;
  font-weight: 700;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.2;
}
.hero-stat > span:last-child {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--mut);
  letter-spacing: 0.04em;
}

.hero-cta { margin-top: 34px; padding: 14px 28px; font-size: 1rem; border-radius: 14px; }

/* ============ section head ============ */
.section-head {
  display: flex; align-items: center; gap: 20px;
  margin: 26px 0 26px;
}
html.hub .section-head {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
html.hub .section-head.revealed {
  opacity: 1;
  transform: translateY(0);
}
.section-head h2 {
  font-family: var(--font-head);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.section-line {
  flex: 1; height: 1px;
  background: linear-gradient(90deg, var(--acc), var(--acc-2), transparent);
  opacity: 0.3;
  animation: line-breathe 5s ease-in-out infinite alternate;
}

/* ============ sim cards ============ */
.sim-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 22px;
  padding-bottom: 30px;
}
.sim-card {
  position: relative;
  display: flex; flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
  text-decoration: none;
  color: var(--txt);
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
  will-change: transform;
}

/* scroll reveal */
html.hub .sim-card {
  opacity: 0;
  transform: translateY(40px) scale(0.97);
}
html.hub .sim-card.revealed {
  animation: card-reveal 0.7s cubic-bezier(0.22, 0.68, 0, 1.1) forwards;
  animation-delay: var(--reveal-delay, 0s);
}
html.hub .sim-card.soon.revealed {
  animation-name: card-reveal-dim;
}

/* rotating gradient border (mask-composite) */
.sim-card.live::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  padding: 2px;
  background: conic-gradient(from var(--border-angle), #67e8f9, #818cf8, #c084fc, #f472b6, #818cf8, #67e8f9);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  z-index: 2;
  pointer-events: none;
  transition: opacity 0.5s;
}
.sim-card.live:hover::before {
  opacity: 1;
  animation: rotate-border 4s linear infinite;
}

.sim-card.live:hover {
  border-color: transparent;
  background: rgba(12, 18, 32, 0.88);
  box-shadow:
    var(--shadow),
    0 0 60px -12px rgba(103, 232, 249, 0.18),
    0 0 100px -20px rgba(129, 140, 248, 0.1);
}
.sim-card.soon { opacity: 0.55; }

.card-art {
  height: 140px;
  display: grid; place-items: center;
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.card-art::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 120%, currentColor, transparent 70%);
  opacity: 0.06;
  transition: opacity 0.3s;
}
.sim-card.live:hover .card-art::after { opacity: 0.15; }
.card-art svg {
  width: 150px; height: 80px;
  opacity: 0.85;
  transition: transform 0.5s cubic-bezier(.22,.68,0,1.2), opacity 0.3s, filter 0.3s;
}
.sim-card.live:hover .card-art svg {
  transform: scale(1.12) translateY(-2px);
  opacity: 1;
  filter: drop-shadow(0 4px 14px currentColor);
}
.art-teal   { color: #67e8f9; background: radial-gradient(450px 140px at 50% 110%, rgba(103,232,249,0.14), transparent); }
.art-violet { color: #a78bfa; background: radial-gradient(450px 140px at 50% 110%, rgba(167,139,250,0.14), transparent); }
.art-amber  { color: #fcd34d; background: radial-gradient(450px 140px at 50% 110%, rgba(252,211,77,0.11), transparent); }
.art-rose   { color: #fda4af; background: radial-gradient(450px 140px at 50% 110%, rgba(253,164,175,0.11), transparent); }
.art-blue   { color: #60a5fa; background: radial-gradient(450px 140px at 50% 110%, rgba(96,165,250,0.14), transparent); }
.art-sky    { color: #38bdf8; background: radial-gradient(450px 140px at 50% 110%, rgba(56,189,248,0.14), transparent); }
.art-emerald{ color: #34d399; background: radial-gradient(450px 140px at 50% 110%, rgba(52,211,153,0.12), transparent); }
.card-body { padding: 20px 22px 14px; flex: 1; }
.card-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 8px; }
.card-top h3 { font-family: var(--font-head); font-size: 1.12rem; font-weight: 600; letter-spacing: -0.01em; }
.badge {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 4px 9px;
  border-radius: 999px;
}
.badge-live {
  color: #052e22;
  background: var(--ok);
  box-shadow: 0 0 18px rgba(52, 211, 153, 0.5), inset 0 1px 0 rgba(255,255,255,0.2);
  animation: badge-pulse 2.5s ease-in-out infinite;
}
@keyframes badge-pulse {
  0%, 100% { box-shadow: 0 0 18px rgba(52, 211, 153, 0.5), inset 0 1px 0 rgba(255,255,255,0.2); }
  50% { box-shadow: 0 0 28px rgba(52, 211, 153, 0.75), 0 0 50px rgba(52, 211, 153, 0.15), inset 0 1px 0 rgba(255,255,255,0.2); }
}
.badge-soon { color: var(--mut); border: 1px solid var(--line-strong); }
.card-body p { font-size: 0.88rem; color: var(--mut); line-height: 1.55; }
.card-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 14px; }
.card-tags span {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--mut);
  border: 1px solid var(--line);
  padding: 3px 9px;
  border-radius: 7px;
  transition: border-color 0.25s, color 0.25s, background 0.25s;
}
.sim-card.live:hover .card-tags span { border-color: var(--line-strong); color: var(--txt); background: rgba(255,255,255,0.03); }
.card-go {
  padding: 13px 22px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--acc);
  border-top: 1px solid var(--line);
  transition: padding-left 0.35s cubic-bezier(.22,.68,0,1.2), color 0.2s, letter-spacing 0.3s;
}
.sim-card.soon .card-go { color: var(--mut); font-weight: 500; }
.sim-card.live:hover .card-go { padding-left: 30px; letter-spacing: 0.02em; }

/* ============ footer ============ */
.footer {
  display: flex; align-items: center; gap: 10px;
  padding: 28px 0 36px;
  color: var(--mut);
  font-size: 0.8rem;
  border-top: 1px solid transparent;
  border-image: linear-gradient(90deg, var(--acc), var(--acc-2), transparent 80%) 1;
  margin-top: 20px;
}
.foot-dot { opacity: 0.5; }

/* ============ keyframes ============ */
@keyframes text-shimmer {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
@keyframes hero-enter {
  to { opacity: 1; transform: translateY(0); }
}
@keyframes hero-glow-breathe {
  from { opacity: 0.5; transform: translateY(-50%) scale(1); }
  to   { opacity: 0.85; transform: translateY(-50%) scale(1.18); }
}
@keyframes cursor-blink {
  0%, 49% { opacity: 0.7; }
  50%, 100% { opacity: 0; }
}
@keyframes rotate-border {
  to { --border-angle: 360deg; }
}
@keyframes card-reveal {
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes card-reveal-dim {
  to { opacity: 0.55; transform: translateY(0) scale(1); }
}
@keyframes line-breathe {
  from { opacity: 0.2; }
  to   { opacity: 0.55; }
}
@keyframes geo-spin-drift {
  0%   { transform: rotate(0deg) translateY(0); }
  25%  { transform: rotate(90deg) translateY(-15px); }
  50%  { transform: rotate(180deg) translateY(5px); }
  75%  { transform: rotate(270deg) translateY(-10px); }
  100% { transform: rotate(360deg) translateY(0); }
}
@keyframes geo-bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-18px); }
}
@keyframes geo-bob-alt {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(-14px); }
}
@keyframes geo-spin-slow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes geo-fade-in {
  to { opacity: 1; }
}

/* ============ responsive ============ */
@media (max-width: 640px) {
  .hero { padding: 64px 0 50px; }
  .nav { padding: 12px 18px; }
  .container { width: calc(100% - 32px); }
  .hero-stats { gap: 22px; flex-wrap: wrap; }
  .hero-stat-num { font-size: 1.3rem; }
  .hub-geo { display: none; }
  .hub-hero-glow { width: 400px; height: 250px; }
}