/* THE LAST EXIT — cinematic dark horror UI */

:root {
  --bg: #07090b;
  --bg-2: #0c1013;
  --ink: #e8e6df;
  --ink-dim: #a9aba4;
  --muted: #6f756f;
  --accent: #8ff0a4;
  --accent-dim: #3f7a4e;
  --accent-glow: rgba(143, 240, 164, 0.55);
  --locked: #b03a2e;
  --line: rgba(232, 230, 223, 0.14);

  --font-display: "Avenir Next Condensed", "Futura", "Helvetica Neue", "Arial Narrow", "Roboto Condensed", sans-serif;
  --font-ui: "Avenir Next", "Helvetica Neue", "Segoe UI", system-ui, sans-serif;
  --font-mono: "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

#scene {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  background: var(--bg);
}

/* ---------- always-on cinematic layers ---------- */

.layer { position: fixed; inset: 0; pointer-events: none; }

.vignette {
  background:
    radial-gradient(ellipse 70% 60% at 50% 50%, transparent 40%, rgba(0, 0, 0, 0.55) 100%);
  z-index: 5;
}

.grain {
  z-index: 6;
  opacity: 0.07;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.9 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 220px 220px;
  animation: grain 0.9s steps(4) infinite;
}
@keyframes grain {
  0%   { background-position: 0 0; }
  25%  { background-position: -40px 60px; }
  50%  { background-position: 70px -30px; }
  75%  { background-position: -20px -80px; }
  100% { background-position: 0 0; }
}

/* ---------- screens ---------- */

.screen {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s var(--ease), visibility 0.6s;
}
.screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.menu {
  background:
    linear-gradient(180deg, rgba(7, 9, 11, 0.55) 0%, rgba(7, 9, 11, 0.35) 45%, rgba(7, 9, 11, 0.8) 100%);
}

.menu-fog {
  position: absolute;
  inset: -20%;
  pointer-events: none;
  background:
    radial-gradient(45% 35% at 20% 70%, rgba(143, 240, 164, 0.06), transparent 70%),
    radial-gradient(40% 40% at 80% 30%, rgba(200, 210, 220, 0.05), transparent 70%),
    radial-gradient(60% 30% at 50% 100%, rgba(120, 130, 140, 0.08), transparent 70%);
  animation: fogdrift 28s ease-in-out infinite alternate;
  filter: blur(30px);
}
@keyframes fogdrift {
  from { transform: translate3d(-3%, 1%, 0) scale(1); }
  to   { transform: translate3d(3%, -2%, 0) scale(1.08); }
}

.menu-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 24px;
  max-width: 920px;
  width: 100%;
}

.kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--muted);
}

.title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(44px, 9vw, 128px);
  line-height: 1;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink);
  text-shadow:
    0 0 18px rgba(232, 230, 223, 0.18),
    0 0 60px rgba(143, 240, 164, 0.12);
  white-space: nowrap;
  padding-left: 0.28em; /* visually balance trailing letter-spacing */
}
.title span { display: inline-block; }
.title .gap { width: 0.55em; }
.title .fl  { animation: flicker 7s linear infinite; }
.title .fl2 { animation: flicker 11s linear infinite 2.3s; }

@keyframes flicker {
  0%, 18%, 22%, 25%, 53%, 57%, 100% { opacity: 1; text-shadow: 0 0 18px rgba(232,230,223,.18), 0 0 60px rgba(143,240,164,.12); }
  20%, 24% { opacity: 0.25; text-shadow: none; }
  55% { opacity: 0.55; }
  56% { opacity: 0.1; text-shadow: none; }
}

.tagline {
  margin: 26px 0 0;
  font-size: clamp(13px, 1.4vw, 17px);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

/* key icons */
.key {
  width: 32px;
  height: 20px;
  color: var(--line);
  transition: color 0.4s var(--ease), filter 0.4s var(--ease), transform 0.4s var(--ease);
}
.key.lit {
  color: var(--accent);
  filter: drop-shadow(0 0 6px var(--accent-glow));
}
.key.pulse { animation: keypulse 0.7s var(--ease); }
@keyframes keypulse {
  0%   { transform: scale(1); }
  35%  { transform: scale(1.35); filter: drop-shadow(0 0 14px var(--accent)); }
  100% { transform: scale(1); }
}

.objective {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 34px;
}
.objective .key { color: rgba(232, 230, 223, 0.28); }
.objective-text {
  margin-left: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--muted);
}

/* buttons */
.btn {
  appearance: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  padding: 16px 38px;
  cursor: pointer;
  position: relative;
  transition: border-color 0.3s, color 0.3s, box-shadow 0.4s var(--ease), transform 0.15s var(--ease), background 0.3s;
}
.btn:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(143, 240, 164, 0.25);
}
.btn:active { transform: translateY(1px) scale(0.985); }

.btn-primary {
  margin-top: 38px;
  border-color: rgba(143, 240, 164, 0.45);
  color: var(--accent);
  background: rgba(143, 240, 164, 0.03);
  box-shadow: 0 0 0 rgba(143, 240, 164, 0);
}
.btn-primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 120% at 50% 100%, rgba(143, 240, 164, 0.18), transparent 70%);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}
.btn-primary:hover, .btn-primary:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 0 28px rgba(143, 240, 164, 0.22), inset 0 0 18px rgba(143, 240, 164, 0.08);
}
.btn-primary:hover::before { opacity: 1; }
.btn-label { position: relative; }

.btn-ghost {
  color: var(--ink-dim);
  border-color: var(--line);
}
.btn-ghost:hover { color: var(--ink); border-color: rgba(232, 230, 223, 0.4); }

.corner {
  position: absolute;
  right: 22px;
  bottom: 20px;
  padding: 10px 16px;
  font-size: 10px;
  letter-spacing: 0.28em;
}

/* key hints */
.hints {
  display: flex;
  gap: 38px;
  margin-top: 40px;
  flex-wrap: wrap;
  justify-content: center;
}
.hint { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.keycaps { display: flex; gap: 5px; }
kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 26px;
  height: 26px;
  padding: 0 7px;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
  background: rgba(255, 255, 255, 0.02);
}
kbd.wide { padding: 0 12px; }
.hint-text {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--muted);
}

.meta {
  display: flex;
  gap: 28px;
  margin-top: 44px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--muted);
  flex-wrap: wrap;
  justify-content: center;
}
.meta strong { color: var(--ink-dim); font-weight: 500; }
.meta .hidden { display: none; }

/* intro reveal sequence */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  animation: reveal 1.4s var(--ease) forwards;
}
.r1 { animation-delay: 0.3s; }
.r2 { animation-delay: 0.6s; animation-duration: 2.2s; }
.r3 { animation-delay: 1.5s; }
.r4 { animation-delay: 1.9s; }
.r5 { animation-delay: 2.2s; }
.r6 { animation-delay: 2.5s; }
.r7 { animation-delay: 2.8s; }
@keyframes reveal {
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- overlays (pause, win) ---------- */

.overlay {
  background: rgba(7, 9, 11, 0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.panel {
  position: relative;
  text-align: center;
  padding: 40px 48px;
  border: 1px solid var(--line);
  background: rgba(7, 9, 11, 0.35);
  max-width: 560px;
  width: calc(100% - 48px);
}
.h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(30px, 5vw, 56px);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  padding-left: 0.3em;
}
.h2.big { font-size: clamp(36px, 6vw, 72px); text-shadow: 0 0 30px var(--accent-glow); color: var(--ink); }
.sub {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.row { display: flex; gap: 14px; justify-content: center; margin-top: 30px; flex-wrap: wrap; }
.row .btn-primary { margin-top: 0; }

.stats { display: flex; justify-content: center; gap: 48px; margin-top: 28px; }
.stat { display: flex; flex-direction: column; gap: 6px; }
.stat-label { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.3em; text-transform: uppercase; color: var(--muted); }
.stat-value { font-family: var(--font-mono); font-size: 22px; letter-spacing: 0.1em; color: var(--ink); }

.bloom {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(50% 50% at 50% 50%, rgba(143, 240, 164, 0.22), transparent 70%);
  opacity: 0;
}
#win:not(.hidden) .bloom { animation: bloom 4s var(--ease) forwards; }
@keyframes bloom {
  0% { opacity: 0; transform: scale(0.6); }
  40% { opacity: 1; }
  100% { opacity: 0.35; transform: scale(1.4); }
}

/* ---------- HUD ---------- */

.hud {
  pointer-events: none;
  display: block;
  z-index: 8;
}
.hud-keys {
  position: absolute;
  top: 22px;
  left: 26px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.hud-count {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--ink-dim);
}
.hud-timer {
  position: absolute;
  top: 22px;
  right: 26px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--ink-dim);
  transition: color 0.4s, transform 0.4s var(--ease);
  transform-origin: top right;
}
.hud-timer-label {
  font-size: 9px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--muted);
}
.hud-timer.warn {
  color: #ff5a46;
  text-shadow: 0 0 14px rgba(255, 60, 40, 0.7);
  animation: blink 1s steps(2, start) infinite;
}
.hud-timer.warn .hud-timer-label { color: #c0453a; }
.hud-timer.critical {
  animation-duration: 0.36s;
  transform: scale(1.35);
  font-weight: 600;
}
@keyframes blink { to { opacity: 0.3; } }

.danger {
  z-index: 7;
  opacity: 0;
  background: radial-gradient(ellipse 60% 55% at 50% 50%, transparent 35%, rgba(150, 10, 10, 0.75) 100%);
  transition: opacity 0.25s;
}

.overlay.dead { background: rgba(14, 4, 4, 0.5); backdrop-filter: blur(1.5px); -webkit-backdrop-filter: blur(1.5px); }
#gameover { align-items: flex-end; padding-bottom: 5vh; }
#gameover .panel { background: rgba(7, 9, 11, 0.55); padding: 26px 40px; }
.h2.red { color: #ff5a46; text-shadow: 0 0 30px rgba(255, 60, 40, 0.55); }
#gameover .btn-primary { border-color: rgba(255, 90, 70, 0.5); color: #ff8b7a; }
#gameover .btn-primary:hover { box-shadow: 0 0 28px rgba(255, 60, 40, 0.3); border-color: #ff5a46; }
#gameover .btn-primary::before { background: radial-gradient(60% 120% at 50% 100%, rgba(255, 60, 40, 0.2), transparent 70%); }
.crosshair {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 3px;
  height: 3px;
  margin: -1.5px 0 0 -1.5px;
  border-radius: 50%;
  background: rgba(232, 230, 223, 0.55);
}
.hud-message {
  position: absolute;
  left: 0; right: 0;
  top: 38%;
  text-align: center;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(22px, 3.4vw, 40px);
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--accent);
  text-shadow: 0 0 24px var(--accent-glow);
  opacity: 0;
  padding-left: 0.4em;
}
.hud-message.show { animation: msg 3.2s var(--ease) forwards; }
@keyframes msg {
  0%   { opacity: 0; transform: translateY(8px) scale(0.98); letter-spacing: 0.3em; }
  15%  { opacity: 1; transform: translateY(0) scale(1); }
  70%  { opacity: 1; }
  100% { opacity: 0; letter-spacing: 0.5em; }
}
.hud-hint {
  position: absolute;
  left: 0; right: 0;
  bottom: 28px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--muted);
  transition: opacity 1s;
}

.minimap-wrap {
  position: absolute;
  left: 26px;
  bottom: 26px;
  width: 150px;
  height: 150px;
  border: 1px solid var(--line);
  background: rgba(7, 9, 11, 0.45);
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
}
#minimap { width: 100%; height: 100%; display: block; }
.minimap-label {
  position: absolute;
  left: 0; right: 0;
  bottom: -18px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--muted);
}
@media (max-width: 720px) { .minimap-wrap { width: 110px; height: 110px; } }

/* ---------- fade layer ---------- */

.fade {
  position: fixed;
  inset: 0;
  z-index: 50;
  pointer-events: none;
  background: var(--bg);
  opacity: 0;
  transition: opacity 0.9s var(--ease);
}
.fade.on { opacity: 1; }
.fade.flood { background: #dffbe6; transition: opacity 1.6s ease-in; }
.fade.instant { transition: none; }

/* ---------- responsive ---------- */

@media (max-width: 720px) {
  .title { letter-spacing: 0.18em; padding-left: 0.18em; }
  .hints { gap: 22px; }
  .panel { padding: 30px 22px; }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .grain, .menu-fog, .title .fl, .title .fl2 { animation: none; }
  .hud-timer.warn { animation: none; }
  .reveal { animation-duration: 0.01s; animation-delay: 0s; }
  .screen { transition: none; }
}