/* ==========================================================================
   КПК «ЗОНА ИХТИАНДР» — Tier 0 CRT stylesheet
   Pure HTML/CSS/JS — no preprocessor, no bundler
   ========================================================================== */

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
button, input { font: inherit; color: inherit; background: transparent; border: 0; outline: 0; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }

/* --------------------------------------------------------------------------
   Design tokens
   -------------------------------------------------------------------------- */
:root {
  --bg: #0a0a0a;
  --bg-deep: #050505;
  --fg: #00ff41;       /* CRT phosphor green */
  --fg-dim: #1a8a2c;
  --amber: #ffb000;
  --warn: #ff3a20;     /* rust warning */
  --warn-soft: #7a1a0e;
  --shadow: #001a08;
  --mono: 'JetBrains Mono', 'IBM Plex Mono', 'Fira Code', 'Roboto Mono',
          'Courier New', ui-monospace, monospace;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bot: env(safe-area-inset-bottom, 0px);
}

/* --------------------------------------------------------------------------
   Base body — CRT phosphor screen
   -------------------------------------------------------------------------- */
html {
  background: #000;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.55;
  color: var(--fg);
  background: var(--bg);
  overflow-x: hidden;
  min-height: 100vh;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  text-shadow: 0 0 1px rgba(0, 255, 65, 0.55);
  letter-spacing: 0.02em;
}

/* --------------------------------------------------------------------------
   CRT screen effects: flicker + scanline overlay + vignette
   -------------------------------------------------------------------------- */
.crt-frame {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  padding: calc(24px + var(--safe-top)) 20px calc(80px + var(--safe-bot));
  isolation: isolate;
}
.crt-frame::before,
.crt-frame::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9000;
}
/* Scanlines */
.crt-frame::before {
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.22) 3px,
    rgba(0, 0, 0, 0) 4px
  );
  z-index: 9000;
  mix-blend-mode: multiply;
}
/* Vignette + slight chromatic ghost */
.crt-frame::after {
  background:
    radial-gradient(ellipse at center,
      rgba(0, 0, 0, 0) 55%,
      rgba(0, 0, 0, 0.55) 100%),
    repeating-linear-gradient(
      to bottom,
      rgba(0, 255, 65, 0.02) 0px,
      rgba(0, 255, 65, 0.02) 1px,
      rgba(0, 255, 65, 0) 2px
    );
  z-index: 9001;
}

/* Slow screen flicker (subtle) */
@keyframes crt-flicker {
  0%, 100% { opacity: 1; }
  3% { opacity: 0.94; }
  6% { opacity: 0.99; }
  33% { opacity: 0.97; }
  60% { opacity: 0.93; }
  72% { opacity: 1; }
}
.crt-frame { animation: crt-flicker 6s steps(60, end) infinite; }

/* --------------------------------------------------------------------------
   Typography — phosphor green with soft glow
   -------------------------------------------------------------------------- */
h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
h1 {
  font-size: clamp(1.4rem, 4.4vw, 2.1rem);
  color: var(--fg);
  text-shadow: 0 0 1px var(--fg), 0 0 4px var(--fg), 0 0 14px rgba(0, 255, 65, 0.35);
  margin-bottom: 0.6em;
}
h2 {
  font-size: clamp(1.05rem, 3.6vw, 1.4rem);
  color: var(--amber);
  text-shadow: 0 0 1px var(--amber), 0 0 6px rgba(255, 176, 0, 0.45);
  margin-bottom: 0.5em;
}
h3 {
  font-size: 1rem;
  color: var(--fg);
  margin-bottom: 0.3em;
}
p { margin-bottom: 0.9em; }
em { color: var(--amber); font-style: normal; }
strong { color: var(--fg); font-weight: 700; }

.glow { text-shadow: 0 0 1px var(--fg), 0 0 4px var(--fg), 0 0 10px rgba(0, 255, 65, 0.5); }
.amber { color: var(--amber); text-shadow: 0 0 1px var(--amber), 0 0 6px rgba(255, 176, 0, 0.4); }
.warn  { color: var(--warn); text-shadow: 0 0 1px var(--warn), 0 0 6px rgba(255, 58, 32, 0.45); }
.dim   { color: var(--fg-dim); }
.center { text-align: center; }
.spaced { letter-spacing: 0.18em; }

/* --------------------------------------------------------------------------
   Container
   -------------------------------------------------------------------------- */
.container {
  max-width: 560px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* --------------------------------------------------------------------------
   CRT container — slight barrel effect + glow border
   -------------------------------------------------------------------------- */
.crt-shell {
  border: 1px solid rgba(0, 255, 65, 0.35);
  padding: 18px 16px;
  background: linear-gradient(180deg, rgba(0, 30, 12, 0.35), rgba(0, 0, 0, 0));
  box-shadow: inset 0 0 30px rgba(0, 255, 65, 0.08), 0 0 12px rgba(0, 255, 65, 0.12);
  position: relative;
}

/* --------------------------------------------------------------------------
   Form controls — terminal style
   -------------------------------------------------------------------------- */
.field {
  display: block;
  width: 100%;
  padding: 14px 14px;
  margin: 12px 0;
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--fg);
  background: rgba(0, 30, 12, 0.4);
  border: 1px solid var(--fg-dim);
  caret-color: var(--fg);
  text-shadow: 0 0 1px rgba(0, 255, 65, 0.7);
  letter-spacing: 0.04em;
}
.field::placeholder { color: rgba(0, 255, 65, 0.35); text-shadow: none; }
.field:focus {
  border-color: var(--fg);
  box-shadow: 0 0 0 1px var(--fg), 0 0 10px rgba(0, 255, 65, 0.45);
  background: rgba(0, 40, 18, 0.55);
}

.btn {
  display: inline-block;
  padding: 14px 22px;
  font-family: var(--mono);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--bg);
  background: var(--fg);
  border: 1px solid var(--fg);
  text-shadow: none;
  box-shadow: 0 0 10px rgba(0, 255, 65, 0.6), inset 0 0 6px rgba(255, 255, 255, 0.2);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  font-weight: 700;
}
.btn:hover { background: #4dff70; box-shadow: 0 0 14px rgba(0, 255, 65, 0.85); }
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; }

.btn-ghost {
  background: transparent;
  color: var(--fg);
  text-shadow: 0 0 1px var(--fg), 0 0 4px rgba(0, 255, 65, 0.4);
  box-shadow: none;
  border-color: var(--fg-dim);
}
.btn-ghost:hover { background: rgba(0, 255, 65, 0.08); }

.btn-amber {
  background: var(--amber);
  border-color: var(--amber);
  box-shadow: 0 0 10px rgba(255, 176, 0, 0.55);
  color: #1a1100;
}
.btn-amber:hover { background: #ffc83d; }
.btn-warn {
  background: var(--warn);
  border-color: var(--warn);
  box-shadow: 0 0 10px rgba(255, 58, 32, 0.55);
  color: #fff;
}
.btn-warn:hover { background: #ff5a3f; }

.btn-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }

/* --------------------------------------------------------------------------
   Blink / cursor
   -------------------------------------------------------------------------- */
@keyframes blink { 0%, 50% { opacity: 1; } 51%, 100% { opacity: 0; } }
.blink        { animation: blink 1s steps(2, end) infinite; }
.blink-fast   { animation: blink 0.55s steps(2, end) infinite; }
.cursor::after { content: "_"; display: inline-block; margin-left: 2px; animation: blink 1s steps(2, end) infinite; color: var(--fg); text-shadow: inherit; }

/* --------------------------------------------------------------------------
   Dosimeter widget — fixed corner on every page
   -------------------------------------------------------------------------- */
.dosimeter {
  position: fixed;
  right: 12px;
  bottom: calc(12px + var(--safe-bot));
  z-index: 9500;
  background: rgba(0, 0, 0, 0.85);
  border: 1px solid var(--fg-dim);
  padding: 8px 10px;
  font-size: 11px;
  line-height: 1.25;
  color: var(--fg);
  min-width: 156px;
  letter-spacing: 0.04em;
  box-shadow: 0 0 8px rgba(0, 255, 65, 0.25), inset 0 0 6px rgba(0, 255, 65, 0.1);
  pointer-events: none;
}
.dosimeter .dz-label { display: flex; justify-content: space-between; align-items: center; gap: 6px; }
.dosimeter .dz-icon { color: var(--amber); text-shadow: 0 0 2px var(--amber); }
.dosimeter .dz-bar  {
  margin-top: 5px;
  height: 6px;
  background: rgba(0, 255, 65, 0.1);
  border: 1px solid rgba(0, 255, 65, 0.25);
  position: relative;
  overflow: hidden;
}
.dosimeter .dz-bar-fill {
  height: 100%;
  width: 0;
  background: var(--fg);
  box-shadow: 0 0 8px var(--fg);
}
.dosimeter.is-warn  { color: var(--amber); border-color: var(--amber); }
.dosimeter.is-warn  .dz-icon { color: var(--amber); }
.dosimeter.is-warn  .dz-bar-fill { background: var(--amber); box-shadow: 0 0 8px var(--amber); }
.dosimeter.is-crit  { color: var(--warn); border-color: var(--warn); }
.dosimeter.is-crit  .dz-icon { color: var(--warn); }
.dosimeter.is-crit  .dz-bar-fill { background: var(--warn); box-shadow: 0 0 10px var(--warn); animation: pulse-warn 1s ease-in-out infinite; }
.dosimeter .dz-msg {
  margin-top: 6px;
  font-size: 10px;
  letter-spacing: 0.02em;
  color: var(--fg-dim);
}
.dosimeter.is-warn .dz-msg { color: var(--amber); }
.dosimeter.is-crit .dz-msg { color: var(--warn); }

@keyframes pulse-warn {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* --------------------------------------------------------------------------
   Header / nav-line
   -------------------------------------------------------------------------- */
.topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--fg-dim);
  margin-bottom: 18px;
  padding-bottom: 8px;
  border-bottom: 1px dashed rgba(0, 255, 65, 0.25);
}
.topline .callsign { color: var(--amber); text-shadow: 0 0 2px rgba(255, 176, 0, 0.6); }
.topline .stamp    { color: var(--fg-dim); }

/* --------------------------------------------------------------------------
   Loader / typewriter text
   -------------------------------------------------------------------------- */
@keyframes type-cursor { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }
.typing::after {
  content: "_";
  animation: type-cursor 0.8s steps(1, end) infinite;
  margin-left: 2px;
  color: var(--fg);
}

/* --------------------------------------------------------------------------
   Stalker prompt screen (index)
   -------------------------------------------------------------------------- */
.boot {
  font-size: 12px;
  color: var(--fg-dim);
  letter-spacing: 0.06em;
  margin-bottom: 24px;
}
.boot span { display: inline-block; margin-right: 6px; }

.hero {
  text-align: center;
  padding: 8px 0 18px;
}
.hero h1 {
  font-size: clamp(1.6rem, 7vw, 2.6rem);
  line-height: 1.05;
  margin-bottom: 0.4em;
}
.hero .subtitle {
  color: var(--amber);
  font-size: 0.95rem;
  letter-spacing: 0.25em;
  text-shadow: 0 0 1px var(--amber), 0 0 6px rgba(255, 176, 0, 0.5);
}

.canvas-host {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   Map (page map.html) — SVG with 7 anomaly points
   -------------------------------------------------------------------------- */
.map-wrap {
  position: relative;
  background: radial-gradient(circle at center, rgba(0, 80, 30, 0.18), rgba(0, 0, 0, 0) 70%);
  border: 1px solid rgba(0, 255, 65, 0.3);
  padding: 8px;
  margin-top: 8px;
}
.map-wrap svg { width: 100%; height: auto; display: block; }
.map-legend {
  margin-top: 14px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  font-size: 11px;
  color: var(--fg-dim);
}
.map-legend div { display: flex; align-items: center; gap: 6px; }
.map-legend .swatch {
  width: 10px; height: 10px; border-radius: 50%; box-shadow: 0 0 4px currentColor;
}
.sw-active { background: var(--amber); color: var(--amber); }
.sw-found  { background: var(--fg);    color: var(--fg); }
.sw-locked { background: var(--fg-dim); color: var(--fg-dim); }

.point {
  cursor: pointer;
  transition: opacity 200ms ease-out, transform 200ms ease-out;
}
.point[data-found="1"] { cursor: pointer; }
.point[data-locked="1"] { cursor: not-allowed; opacity: 0.55; }

@keyframes pulse-amber {
  0%, 100% { transform: scale(1);   filter: drop-shadow(0 0 4px var(--amber)); }
  50%      { transform: scale(1.15); filter: drop-shadow(0 0 8px var(--amber)); }
}
.point.is-active .pulse { transform-origin: center; transform-box: fill-box; animation: pulse-amber 1.6s ease-in-out infinite; }

/* --------------------------------------------------------------------------
   Riddle page
   -------------------------------------------------------------------------- */
.riddle-meta {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--fg-dim);
  margin-bottom: 8px;
}
.riddle-prompt {
  border-left: 2px solid var(--amber);
  padding: 12px 14px;
  margin: 14px 0 18px;
  background: rgba(255, 176, 0, 0.04);
  color: var(--fg);
  line-height: 1.55;
  white-space: pre-wrap;
}

.feedback {
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px solid currentColor;
  font-size: 14px;
  line-height: 1.5;
}
.feedback.ok   { color: var(--fg);   border-color: var(--fg);   background: rgba(0, 255, 65, 0.06); }
.feedback.bad  { color: var(--warn); border-color: var(--warn); background: rgba(255, 58, 32, 0.07); }
.feedback.info { color: var(--amber); border-color: var(--amber); background: rgba(255, 176, 0, 0.06); }

.hint {
  margin-top: 10px;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--fg-dim);
}

/* --------------------------------------------------------------------------
   Final / passport
   -------------------------------------------------------------------------- */
.big-msg {
  text-align: center;
  font-size: clamp(1.05rem, 3.6vw, 1.45rem);
  line-height: 1.45;
  color: var(--fg);
  text-shadow: 0 0 1px var(--fg), 0 0 6px rgba(0, 255, 65, 0.45);
  padding: 30px 8px;
}

.passport {
  border: 2px solid var(--amber);
  padding: 20px;
  background: rgba(255, 176, 0, 0.04);
  color: var(--amber);
  font-size: 13px;
  line-height: 1.6;
  box-shadow: 0 0 18px rgba(255, 176, 0, 0.25);
}
.passport .p-title {
  font-size: 1.15rem;
  letter-spacing: 0.2em;
  text-align: center;
  color: var(--amber);
  text-shadow: 0 0 1px var(--amber), 0 0 6px rgba(255, 176, 0, 0.5);
  margin-bottom: 14px;
}
.passport .p-row { display: flex; justify-content: space-between; gap: 12px; border-bottom: 1px dashed rgba(255, 176, 0, 0.25); padding: 6px 0; }
.passport .p-row .k { color: var(--fg-dim); letter-spacing: 0.1em; }
.passport .p-row .v { color: var(--amber); text-align: right; word-break: break-word; }
.passport .p-seal {
  margin-top: 16px;
  text-align: center;
  font-size: 10px;
  letter-spacing: 0.25em;
  color: var(--fg-dim);
}

/* --------------------------------------------------------------------------
   Boot strip on index
   -------------------------------------------------------------------------- */
.bootstrip {
  font-size: 10px;
  line-height: 1.4;
  color: var(--fg-dim);
  letter-spacing: 0.05em;
  margin-bottom: 18px;
  font-family: var(--mono);
  white-space: pre-wrap;
  word-break: break-word;
}

/* --------------------------------------------------------------------------
   Util
   -------------------------------------------------------------------------- */
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { height: 12px; }
.spacer-lg { height: 28px; }
.muted { color: var(--fg-dim); }
.note { font-size: 11px; color: var(--fg-dim); margin-top: 12px; line-height: 1.5; }
.divider {
  border: 0;
  border-top: 1px dashed rgba(0, 255, 65, 0.3);
  margin: 18px 0;
}

/* noscript */
.nojs { padding: 24px; text-align: center; color: var(--warn); }

/* Small screens tighten */
@media (max-width: 380px) {
  .field, .btn { padding: 12px 12px; font-size: 0.95rem; }
  .dosimeter { right: 8px; bottom: calc(8px + var(--safe-bot)); min-width: 142px; font-size: 10px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .crt-frame { animation: none; }
  .blink, .blink-fast, .typing::after { animation: none; }
  .dosimeter.is-crit .dz-bar-fill { animation: none; }
  .point.is-active .pulse { animation: none; }
}

/* ==========================================================================
   PRINT — passport A4
   ========================================================================== */
@media print {
  body { background: #fff !important; color: #000 !important; text-shadow: none !important; }
  .crt-frame::before, .crt-frame::after { display: none !important; }
  .crt-frame { animation: none !important; }
  .dosimeter, .no-print { display: none !important; }
  .print-page { display: block !important; }
  @page { size: A4; margin: 18mm; }
  .passport-print {
    border: 3px double #000;
    padding: 22mm 18mm;
    font-family: 'Courier New', monospace;
    color: #000;
    background: #fff;
    max-width: 100%;
  }
  .passport-print .pt-title {
    text-align: center;
    font-size: 22pt;
    letter-spacing: 0.2em;
    margin-bottom: 18mm;
    font-weight: bold;
  }
  .passport-print .pt-row {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid #000;
    padding: 2mm 0;
    font-size: 12pt;
    margin-bottom: 1mm;
  }
  .passport-print .pt-row .k { letter-spacing: 0.15em; color: #444; }
  .passport-print .pt-row .v { font-weight: bold; text-align: right; word-break: break-word; max-width: 60%; }
  .passport-print .pt-stamp {
    margin-top: 14mm;
    text-align: center;
    font-size: 10pt;
    letter-spacing: 0.3em;
    border-top: 1px solid #000;
    padding-top: 4mm;
  }
}

.print-page { display: none; }