/* HAL SUPREME  -  riddler / waldo trip sheet */
:root {
  --void: #050208;
  --ink: #e8ffe8;
  --neon-g: #39ff14;
  --neon-g2: #00ff88;
  --neon-p: #ff00e5;
  --neon-c: #00f0ff;
  --neon-y: #ffe600;
  --muted: #8a9a8a;
  --glass: rgba(10, 20, 12, 0.72);
  --danger: #ff3366;
  --font-display: "Courier New", "Lucida Console", monospace;
  --font-body: "Segoe UI", system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-body);
  background: var(--void);
  line-height: 1.55;
  overflow-x: hidden;
  position: relative;
}

/* optical noise + scanlines */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.18;
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(57, 255, 20, 0.03) 2px,
      rgba(57, 255, 20, 0.03) 4px
    ),
    url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
  animation: noise-shift 0.4s steps(2) infinite;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(57, 255, 20, 0.12), transparent 45%),
    radial-gradient(ellipse at 80% 70%, rgba(255, 0, 229, 0.1), transparent 40%),
    radial-gradient(ellipse at 50% 100%, rgba(0, 240, 255, 0.08), transparent 50%);
}

@keyframes noise-shift {
  0% { transform: translate(0, 0); }
  50% { transform: translate(-1%, 1%); }
  100% { transform: translate(1%, -1%); }
}

.wrap {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
}

/* nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.9rem 1.25rem;
  background: rgba(5, 2, 8, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(57, 255, 20, 0.35);
  box-shadow: 0 0 24px rgba(57, 255, 20, 0.15);
}

.nav .logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--neon-g);
  text-shadow: 0 0 8px var(--neon-g), 0 0 20px rgba(57, 255, 20, 0.5);
  text-decoration: none;
}

.nav .logo span { color: var(--neon-p); text-shadow: 0 0 8px var(--neon-p); }

.nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.1rem;
  list-style: none;
}

.nav a {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: lowercase;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s, text-shadow 0.2s;
}

.nav a:hover,
.nav a.active {
  color: var(--neon-g2);
  text-shadow: 0 0 6px var(--neon-g2);
}

/* hero / maze */
.hero {
  text-align: center;
  padding: 3.5rem 0 2rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.4rem);
  letter-spacing: 0.06em;
  text-transform: lowercase;
  color: var(--neon-g);
  text-shadow:
    0 0 10px var(--neon-g),
    2px 0 var(--neon-p),
    -2px 0 var(--neon-c);
  animation: glitch-text 3.5s infinite;
}

@keyframes glitch-text {
  0%, 90%, 100% { text-shadow: 0 0 10px var(--neon-g), 2px 0 var(--neon-p), -2px 0 var(--neon-c); }
  92% { text-shadow: -3px 0 var(--neon-p), 3px 0 var(--neon-c); transform: translateX(2px); }
  94% { text-shadow: 3px 0 var(--neon-c), -3px 0 var(--neon-y); transform: translateX(-2px); }
  96% { transform: none; }
}

.hero .tag {
  margin-top: 1rem;
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
}

.riddle-box {
  margin: 2rem auto;
  max-width: 32rem;
  padding: 1.25rem 1.5rem;
  border: 1px dashed var(--neon-g);
  background: var(--glass);
  box-shadow: inset 0 0 30px rgba(57, 255, 20, 0.08), 0 0 20px rgba(57, 255, 20, 0.12);
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--neon-g2);
}

.riddle-box .q {
  color: var(--neon-y);
  margin-right: 0.35rem;
}

/* floating question marks field */
.maze {
  position: relative;
  min-height: 320px;
  margin: 2rem 0;
  border: 1px solid rgba(57, 255, 20, 0.25);
  background: rgba(0, 0, 0, 0.35);
  overflow: hidden;
  cursor: crosshair;
}

.maze .hint {
  position: absolute;
  top: 0.6rem;
  left: 0.8rem;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  z-index: 2;
  pointer-events: none;
}

.qm {
  position: absolute;
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--neon-g);
  opacity: 0.55;
  user-select: none;
  text-shadow: 0 0 6px var(--neon-g);
  transition: opacity 0.25s, transform 0.25s, color 0.25s;
  animation: drift 8s ease-in-out infinite;
}

.qm:hover {
  opacity: 1;
  color: var(--neon-y);
  transform: scale(1.4) rotate(12deg);
  z-index: 3;
}

.qm.clue::after {
  content: attr(data-clue);
  display: none;
  position: absolute;
  left: 50%;
  bottom: 120%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--neon-c);
  background: rgba(0, 0, 0, 0.85);
  border: 1px solid var(--neon-c);
  padding: 0.35rem 0.55rem;
  pointer-events: none;
}

.qm.clue:hover::after,
.qm.clue:focus::after {
  display: block;
}

@keyframes drift {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-8px) rotate(6deg); }
}

/* HAL (waldo)  -  hidden figure */
.hal-find {
  position: absolute;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 35%, #fff 0 18%, transparent 19%),
    radial-gradient(circle at 65% 35%, #fff 0 18%, transparent 19%),
    radial-gradient(circle at 50% 55%, var(--neon-g) 0 45%, #111 46% 100%);
  opacity: 0.22;
  cursor: pointer;
  transition: opacity 0.3s, transform 0.3s, box-shadow 0.3s;
  z-index: 2;
  border: 1px solid transparent;
}

.hal-find:hover,
.hal-find.found {
  opacity: 1;
  transform: scale(1.6);
  box-shadow: 0 0 18px var(--neon-g), 0 0 40px var(--neon-p);
  border-color: var(--neon-g);
}

.hal-find.found::after {
  content: "you found HAL";
  position: absolute;
  top: 120%;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-family: var(--font-display);
  font-size: 0.6rem;
  color: var(--neon-y);
  text-shadow: 0 0 6px var(--neon-y);
}

.find-toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  z-index: 100;
  padding: 0.75rem 1.25rem;
  background: rgba(0, 0, 0, 0.9);
  border: 1px solid var(--neon-g);
  color: var(--neon-g);
  font-family: var(--font-display);
  font-size: 0.85rem;
  box-shadow: 0 0 24px rgba(57, 255, 20, 0.4);
  transition: transform 0.35s ease;
  pointer-events: none;
}

.find-toast.show { transform: translateX(-50%) translateY(0); }

/* cards / grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.card {
  padding: 1.25rem;
  background: var(--glass);
  border: 1px solid rgba(57, 255, 20, 0.3);
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.card:hover {
  border-color: var(--neon-p);
  box-shadow: 0 0 20px rgba(255, 0, 229, 0.25);
}

.card h3 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  text-transform: lowercase;
  color: var(--neon-g);
  margin-bottom: 0.5rem;
}

.card p { font-size: 0.9rem; color: var(--muted); }

.card a {
  display: inline-block;
  margin-top: 0.75rem;
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--neon-c);
  text-decoration: none;
  letter-spacing: 0.06em;
}

.card a:hover { text-shadow: 0 0 8px var(--neon-c); }

/* buttons */
.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: lowercase;
  padding: 0.65rem 1.2rem;
  border: 1px solid var(--neon-g);
  background: transparent;
  color: var(--neon-g);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}

.btn:hover {
  background: var(--neon-g);
  color: var(--void);
  box-shadow: 0 0 18px rgba(57, 255, 20, 0.5);
}

.btn-p {
  border-color: var(--neon-p);
  color: var(--neon-p);
}

.btn-p:hover {
  background: var(--neon-p);
  color: #fff;
  box-shadow: 0 0 18px rgba(255, 0, 229, 0.5);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin: 1.5rem 0 2.5rem;
}

/* chat panel */
.chat-shell {
  max-width: 720px;
  margin: 1.5rem auto 3rem;
  border: 1px solid rgba(57, 255, 20, 0.4);
  background: rgba(5, 8, 6, 0.85);
  box-shadow: 0 0 40px rgba(57, 255, 20, 0.12), inset 0 0 60px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  min-height: 420px;
  max-height: 70vh;
}

.chat-head {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid rgba(57, 255, 20, 0.25);
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--neon-g);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chat-head .status {
  font-size: 0.7rem;
  color: var(--muted);
}

.chat-head .status.ok { color: var(--neon-g2); }
.chat-head .status.err { color: var(--danger); }

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.msg {
  max-width: 88%;
  padding: 0.65rem 0.9rem;
  font-size: 0.9rem;
  border-radius: 2px;
  word-wrap: break-word;
}

.msg.user {
  align-self: flex-end;
  background: rgba(255, 0, 229, 0.15);
  border: 1px solid rgba(255, 0, 229, 0.45);
  color: #ffd6f7;
}

.msg.assistant {
  align-self: flex-start;
  background: rgba(57, 255, 20, 0.08);
  border: 1px solid rgba(57, 255, 20, 0.35);
  color: var(--neon-g2);
  font-family: var(--font-display);
  font-size: 0.85rem;
}

.msg.system,
.msg.error {
  align-self: center;
  max-width: 95%;
  text-align: center;
  font-size: 0.8rem;
  color: var(--neon-y);
  border: 1px dashed rgba(255, 230, 0, 0.4);
  background: rgba(255, 230, 0, 0.05);
}

.msg.error { color: var(--danger); border-color: rgba(255, 51, 102, 0.5); }

.chat-form {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem;
  border-top: 1px solid rgba(57, 255, 20, 0.25);
}

.chat-form input {
  flex: 1;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(57, 255, 20, 0.35);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 0.65rem 0.85rem;
  outline: none;
}

.chat-form input:focus {
  border-color: var(--neon-g);
  box-shadow: 0 0 12px rgba(57, 255, 20, 0.25);
}

.chat-form input::placeholder { color: var(--muted); }

.chat-form button {
  font-family: var(--font-display);
  letter-spacing: 0.08em;
  text-transform: lowercase;
  padding: 0.65rem 1rem;
  border: 1px solid var(--neon-g);
  background: rgba(57, 255, 20, 0.15);
  color: var(--neon-g);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.chat-form button:hover:not(:disabled) {
  background: var(--neon-g);
  color: var(--void);
}

.chat-form button:disabled {
  opacity: 0.45;
  cursor: wait;
}

/* stub pages */
.stub-block {
  margin: 3rem auto;
  max-width: 28rem;
  text-align: center;
  padding: 2rem;
  border: 1px dashed var(--neon-p);
  background: var(--glass);
}

.stub-block h1 {
  font-family: var(--font-display);
  color: var(--neon-p);
  font-size: 1.5rem;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.footer {
  text-align: center;
  padding: 2rem 1rem;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-family: var(--font-display);
}

.footer a { color: var(--neon-g2); text-decoration: none; }

.hidden-layer {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  font-size: 0;
}

@media (max-width: 560px) {
  .nav ul { gap: 0.3rem 0.75rem; }
  .chat-shell { min-height: 360px; max-height: 65vh; }
}