:root {
  --ink: #16313a;
  --muted: #60787d;
  --page: #eefbf5;
  --card: #ffffff;
  --line: rgba(22, 49, 58, .16);
  --teal: #1eb6b1;
  --deep: #102d3a;
  --pond: #197c8e;
  --lime: #93c94a;
  --gold: #ffcf6a;
  --orange: #ef8140;
  --bad: #d95442;
  --shadow: 0 18px 42px rgba(16, 45, 58, .16);
  --radius: 8px;
  --mono: "Lucida Console", Monaco, monospace;
  --body: Inter, "Trebuchet MS", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--ink);
  font-family: var(--body);
  background: var(--page) url("../assets/images/lab_bg.svg") center top / cover fixed;
}

a { color: inherit; }
button { font: inherit; }

.header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 20px;
  padding: 10px clamp(14px, 4vw, 42px);
  background: rgba(238, 251, 245, .92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  text-decoration: none;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 11px;
}

.brand strong {
  display: block;
  font-size: clamp(1rem, 2vw, 1.34rem);
  font-weight: 950;
  letter-spacing: .02em;
  overflow-wrap: anywhere;
}

.brand span {
  display: block;
  color: var(--muted);
  font-family: var(--mono);
  font-size: .65rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  gap: 6px;
  justify-content: flex-end;
  flex-wrap: wrap;
  min-width: 0;
}

.nav a {
  padding: 8px 10px;
  border-radius: var(--radius);
  color: var(--muted);
  font-size: .8rem;
  font-weight: 850;
  text-decoration: none;
}

.nav a:hover,
.nav a.active {
  color: #fff;
  background: var(--deep);
}

.shell {
  width: min(1220px, calc(100% - 28px));
  max-width: 100%;
  margin: 0 auto;
  padding: 16px 0 42px;
}

.lab-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 318px;
  gap: 14px;
  align-items: start;
}

.game-card,
.log-card,
.info-card,
.page-card,
.contact-card {
  min-width: 0;
  background: rgba(255, 255, 255, .94);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.game-card {
  overflow: hidden;
}

.game-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  color: #fff;
  background: linear-gradient(90deg, var(--deep), #174f5c);
}

.game-head h1 {
  margin: 0;
  font-size: clamp(1.35rem, 3vw, 2.2rem);
  line-height: 1;
}

.game-head p {
  margin: 5px 0 0;
  color: #bff6ef;
  font-weight: 780;
}

.quick-stats {
  display: grid;
  grid-template-columns: repeat(4, 74px);
  gap: 7px;
}

.quick-stats div {
  padding: 8px;
  color: var(--ink);
  background: #fff;
  border-radius: var(--radius);
}

.quick-stats span {
  display: block;
  color: var(--muted);
  font-family: var(--mono);
  font-size: .56rem;
  text-transform: uppercase;
}

.quick-stats strong {
  display: block;
  margin-top: 3px;
  font-size: 1.23rem;
  line-height: 1;
}

.canvas-wrap {
  position: relative;
  width: 100%;
  max-width: 100%;
  background: var(--pond);
  overflow: hidden;
}

#game-canvas {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  touch-action: none;
  user-select: none;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(16, 45, 58, .74);
  backdrop-filter: blur(8px);
  transition: opacity .2s ease;
}

.overlay.hidden { opacity: 0; pointer-events: none; }

.overlay-box {
  width: min(520px, 94%);
  padding: 24px;
  text-align: center;
  background: #fff;
  border: 2px solid var(--teal);
  border-radius: var(--radius);
  box-shadow: 0 22px 48px rgba(0,0,0,.22);
}

.overlay-box img { width: 105px; }

.overlay-box h2 {
  margin: 10px 0 8px;
  font-size: clamp(1.6rem, 4vw, 2.35rem);
}

.overlay-box p {
  margin: 0 auto 16px;
  max-width: 35rem;
  color: var(--muted);
  font-weight: 760;
  line-height: 1.55;
}

.primary {
  min-height: 42px;
  padding: 11px 17px;
  color: #fff;
  background: linear-gradient(180deg, var(--teal), #11847f);
  border: 0;
  border-radius: var(--radius);
  box-shadow: 0 7px 0 #0a5658;
  cursor: pointer;
  font-weight: 950;
}

.log-card {
  padding: 14px;
}

.log-card h2 {
  margin: 0 0 10px;
  font-size: 1.15rem;
}

.mode-stack {
  display: grid;
  gap: 8px;
}

.mode-stack button {
  padding: 10px;
  text-align: left;
  color: var(--muted);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 900;
}

.mode-stack button.active {
  color: var(--ink);
  background: #ddfbf4;
  box-shadow: inset 5px 0 0 var(--teal);
}

.mode-stack small {
  display: block;
  margin-top: 3px;
}

.log-list {
  display: grid;
  gap: 7px;
  margin-top: 14px;
  padding: 10px;
  min-height: 152px;
  background: #f7fffc;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.log-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: .74rem;
}

.log-row b { color: var(--ink); }

.legend {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.legend li {
  color: var(--muted);
  font-weight: 760;
  line-height: 1.4;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
}

.info-card,
.page-card,
.contact-card {
  padding: clamp(18px, 3vw, 28px);
}

.info-card h2,
.page-card h1,
.page-card h2 {
  margin: 0 0 9px;
}

.info-card p,
.page-card p,
.page-card li {
  color: var(--muted);
  font-weight: 740;
  line-height: 1.65;
}

.hero {
  padding-top: 28px;
}

.page-card.hero-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 170px;
  gap: 18px;
  align-items: center;
}

.page-card.hero-card h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: .95;
}

.page-card.hero-card img {
  width: 100%;
}

.page-grid,
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
}

.contact-card span {
  color: var(--muted);
  font-family: var(--mono);
  font-size: .7rem;
  text-transform: uppercase;
}

.contact-card p,
.contact-card a {
  display: block;
  margin: 8px 0 0;
  font-weight: 900;
  overflow-wrap: anywhere;
}

.footer {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 18px clamp(14px, 4vw, 42px);
  color: #d9fff8;
  background: var(--deep);
}

.footer a {
  color: #fff;
  font-weight: 850;
  text-decoration: none;
}

@media (max-width: 980px) {
  .lab-layout,
  .info-grid,
  .page-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .quick-stats {
    grid-template-columns: repeat(4, minmax(64px, 1fr));
  }
}

@media (max-width: 760px) {
  .header,
  .game-head,
  .page-card.hero-card {
    grid-template-columns: 1fr;
  }

  .nav {
    justify-content: flex-start;
  }

  .nav a {
    padding: 7px 6px;
    font-size: .68rem;
  }

  .quick-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-card.hero-card img {
    max-width: 160px;
  }
}