/* =========================================================================
   benign mischief — Arcane Terminal
   a shared design system. link with: <link rel="stylesheet" href="/style.css">
   phosphor-on-black CRT · monospace · alchemical glyphs
   ========================================================================= */

:root {
  --bg:          #05080600;      /* set on body directly; kept for reference */
  --bg-solid:    #060907;
  --bg-panel:    rgba(10, 16, 12, 0.90);
  --phos:        #57f08a;        /* primary phosphor green */
  --phos-bright: #8dffb4;
  --phos-dim:    #2f9d5b;
  --phos-faint:  rgba(87, 240, 138, 0.10);
  --amber:       #ffb454;        /* accent / glyphs / highlights */
  --amber-dim:   #b9812f;
  --ink:         #05080a;         /* text color when on a phosphor fill */
  --text:        #b9f5cf;         /* soft phosphor-white body text */
  --text-dim:    #6bbf8e;
  --line:        rgba(87, 240, 138, 0.28);
  --line-faint:  rgba(87, 240, 138, 0.14);
  --glow:        0 0 6px rgba(87, 240, 138, 0.55);
  --glow-amber:  0 0 8px rgba(255, 180, 84, 0.55);
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code",
          Menlo, Consolas, "Courier New", monospace;
}

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

html { scrollbar-color: var(--phos-dim) var(--bg-solid); }

body {
  font-family: var(--mono);
  line-height: 1.6;
  color: var(--text);
  background:
    radial-gradient(120% 120% at 50% 0%, #0b140e 0%, #060907 55%, #030503 100%)
      fixed;
  padding: 20px;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  text-shadow: 0 0 1px rgba(87, 240, 138, 0.25);
}

/* selection */
::selection { background: var(--phos); color: var(--ink); text-shadow: none; }

/* ===== CRT scanlines + faint flicker (over everything, non-interactive) ==== */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.16) 3px,
    rgba(0, 0, 0, 0) 4px
  );
  opacity: 0.45;
  animation: flicker 4.5s infinite steps(60);
}
@keyframes flicker {
  0%, 97%, 100% { opacity: 0.42; }
  98%           { opacity: 0.30; }
  99%           { opacity: 0.55; }
}

/* ===== ASCII snake — translucent overlay ON TOP of the page =============== */
/* font-size == line-height == JS cell size; JS adds letter-spacing so each
   character cell is square, making horizontal & vertical speed equal.        */
#snake-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;                 /* over content, under the scanlines (9999) */
  pointer-events: none;
  white-space: pre;
  font-size: 18px;
  line-height: 18px;
  color: rgba(87, 240, 138, 0.40);
  text-shadow: 0 0 6px rgba(87, 240, 138, 0.45);
  background: transparent;
  user-select: none;
  overflow: hidden;
}

/* ===== the terminal window ================================================ */
.container {
  max-width: 760px;
  margin: 48px auto;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  position: relative;
  z-index: 2;
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.5),
    0 24px 70px rgba(0, 0, 0, 0.6),
    inset 0 0 60px rgba(87, 240, 138, 0.04);
  backdrop-filter: blur(2px);
}

/* window title bar */
.window-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line-faint);
  font-size: 0.78em;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}
.window-bar .dots { display: flex; gap: 7px; }
.window-bar .dots i {
  width: 11px; height: 11px; border-radius: 50%;
  display: inline-block;
  border: 1px solid var(--phos-dim);
  box-shadow: var(--glow);
}
.window-bar .dots i:nth-child(2) { border-color: var(--amber-dim); box-shadow: var(--glow-amber); }
.window-bar .path { margin-left: auto; opacity: 0.75; }

.window-body { padding: 30px 34px 34px; }

/* ===== header / boot sequence ============================================= */
header { text-align: left; margin-bottom: 26px; }

.boot {
  font-size: 0.82em;
  color: var(--phos-dim);
  margin-bottom: 20px;
  border-left: 2px solid var(--line-faint);
  padding-left: 14px;
}
.boot-line { opacity: 0; animation: bootIn 0.35s ease forwards; white-space: pre-wrap; }
.boot-line:nth-child(1) { animation-delay: 0.10s; }
.boot-line:nth-child(2) { animation-delay: 0.45s; }
.boot-line:nth-child(3) { animation-delay: 0.80s; }
.boot-line:nth-child(4) { animation-delay: 1.15s; }
@keyframes bootIn { from { opacity: 0; transform: translateY(-3px); } to { opacity: 1; transform: none; } }
.boot .ok    { color: var(--phos); text-shadow: var(--glow); }
.boot .glyph { color: var(--amber); text-shadow: var(--glow-amber); }

h1, .title {
  font-size: clamp(1.9em, 6vw, 3em);
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--phos-bright);
  text-shadow: 0 0 10px rgba(87, 240, 138, 0.6), 0 0 30px rgba(87, 240, 138, 0.25);
  line-height: 1.05;
}

.subtitle {
  margin-top: 8px;
  font-size: 0.92em;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}

/* blinking block cursor */
.cursor {
  display: inline-block;
  width: 0.6em;
  height: 1.05em;
  vertical-align: text-bottom;
  background: var(--phos);
  box-shadow: var(--glow);
  margin-left: 2px;
  animation: blink 1.05s steps(1) infinite;
}
@keyframes blink { 0%, 50% { opacity: 1; } 50.01%, 100% { opacity: 0; } }

/* ===== about / prose panels =============================================== */
.about {
  margin: 24px 0;
  padding: 16px 18px;
  background: var(--phos-faint);
  border: 1px solid var(--line-faint);
  border-radius: 6px;
  color: var(--text);
}
.about h2 {
  font-size: 0.8em;
  letter-spacing: 0.22em;
  color: var(--amber);
  text-shadow: var(--glow-amber);
  margin-bottom: 8px;
  font-weight: 700;
}
.about p { color: var(--text-dim); font-size: 0.92em; }
.about a { color: var(--phos); text-decoration: none; border-bottom: 1px dotted var(--phos-dim); }
.about a:hover { color: var(--phos-bright); text-shadow: var(--glow); }

/* ===== nav — a directory of entries ======================================= */
.section-label {
  font-size: 0.72em;
  letter-spacing: 0.28em;
  color: var(--text-dim);
  margin: 30px 0 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line-faint);
}

.nav-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.entry {
  display: block;
  background: rgba(87, 240, 138, 0.03);
  border: 1px solid var(--line-faint);
  border-radius: 6px;
  padding: 16px 16px 14px;
  text-decoration: none;
  color: var(--text);
  position: relative;
  transition: border-color 0.18s, box-shadow 0.18s, background 0.18s, transform 0.18s;
}
.entry::before {
  /* left accent bar that lights up on hover */
  content: "";
  position: absolute;
  left: 0; top: 12px; bottom: 12px;
  width: 2px;
  background: transparent;
  border-radius: 2px;
  transition: background 0.18s, box-shadow 0.18s;
}
.entry:hover, .entry:focus-visible {
  border-color: var(--phos);
  background: var(--phos-faint);
  box-shadow: var(--glow), inset 0 0 24px rgba(87, 240, 138, 0.05);
  transform: translateY(-1px);
  outline: none;
}
.entry:hover::before, .entry:focus-visible::before {
  background: var(--phos);
  box-shadow: var(--glow);
}

.entry-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}
.entry-glyph { color: var(--amber); text-shadow: var(--glow-amber); font-size: 1.05em; }
.entry-name {
  font-size: 1.15em;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--phos-bright);
}
.entry:hover .entry-name { text-shadow: var(--glow); }
.entry-desc { color: var(--text-dim); font-size: 0.82em; margin-top: 6px; }

.entry-tree {
  margin-top: 10px;
  font-size: 0.8em;
  line-height: 1.5;
  color: var(--text-dim);
  white-space: pre;
}
.entry-tree a { color: var(--text-dim); text-decoration: none; }
.entry-tree a:hover { color: var(--phos-bright); text-shadow: var(--glow); }

.entry.pulse .entry-glyph { animation: softpulse 2.4s ease-in-out infinite; }
@keyframes softpulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.45; } }

/* ===== snake controls ===================================================== */
.controls {
  margin-top: 26px;
  padding: 12px 14px;
  border: 1px dashed var(--line-faint);
  border-radius: 6px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.82em;
  color: var(--text-dim);
}
.ctl { cursor: pointer; color: var(--phos); font-weight: 700; letter-spacing: 0.06em; white-space: nowrap; }
.ctl:hover { text-shadow: var(--glow); }
.ctl-speed { display: flex; align-items: center; gap: 8px; }
.ctl-speed span { min-width: 26px; color: var(--phos); }
.ctl-hint { margin-left: auto; opacity: 0.7; letter-spacing: 0.08em; }

input[type="range"] {
  -webkit-appearance: none; appearance: none;
  width: 110px; height: 3px; background: var(--line); border-radius: 3px; outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--phos); box-shadow: var(--glow); cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 12px; height: 12px; border: none; border-radius: 50%;
  background: var(--phos); box-shadow: var(--glow); cursor: pointer;
}

/* ===== footer ============================================================= */
footer {
  margin-top: 30px;
  padding-top: 16px;
  border-top: 1px solid var(--line-faint);
  text-align: center;
  font-size: 0.82em;
  color: var(--text-dim);
}
.footer-glyphs { color: var(--amber); letter-spacing: 0.5em; text-shadow: var(--glow-amber); }
footer a { color: var(--phos); text-decoration: none; }
footer a:hover { color: var(--phos-bright); text-shadow: var(--glow); }

/* ===== shared nav bar (for interior pages that adopt this stylesheet) ===== */
.site-bar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 16px;
  padding: 12px 18px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(4px);
  font-size: 0.85em;
}
.site-bar .brand { color: var(--phos-bright); font-weight: 700; letter-spacing: 0.12em; text-shadow: var(--glow); text-decoration: none; }
.site-bar a { color: var(--text-dim); text-decoration: none; }
.site-bar a:hover { color: var(--phos-bright); text-shadow: var(--glow); }
.site-bar .spacer { margin-left: auto; }

/* ===== subpage helpers ==================================================== */
.crumb {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--text-dim); text-decoration: none; font-size: 0.85em;
  margin-bottom: 6px; letter-spacing: 0.04em;
}
.crumb:hover { color: var(--phos-bright); text-shadow: var(--glow); }

.prose { color: var(--text); font-size: 0.98em; }
.prose p { margin: 0 0 1em; }
.prose a { color: var(--phos); text-decoration: none; border-bottom: 1px dotted var(--phos-dim); }
.prose a:hover { color: var(--phos-bright); text-shadow: var(--glow); }
.prose h2 { color: var(--amber); text-shadow: var(--glow-amber); font-size: 1em; letter-spacing: 0.16em; margin: 1.4em 0 0.6em; }

/* coming-soon / empty state */
.placeholder {
  margin: 24px 0;
  padding: 34px 24px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  text-align: center;
  color: var(--text-dim);
  background: var(--phos-faint);
}
.placeholder .big { font-size: 2.2em; margin-bottom: 10px; filter: drop-shadow(0 0 10px rgba(87,240,138,.4)); }
.placeholder .status {
  display: inline-block; margin-top: 14px;
  color: var(--amber); border: 1px solid var(--amber-dim); border-radius: 4px;
  padding: 3px 10px; font-size: 0.78em; letter-spacing: 0.18em;
}
.placeholder .status::before { content: "◌ "; }

/* image gallery + lightbox (memes, drawings) */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
  margin: 22px 0;
}
.gallery figure {
  margin: 0; border: 1px solid var(--line-faint); border-radius: 6px; overflow: hidden;
  background: #000; cursor: zoom-in; transition: border-color .18s, box-shadow .18s, transform .18s;
}
.gallery figure:hover { border-color: var(--phos); box-shadow: var(--glow); transform: translateY(-2px); }
.gallery img { display: block; width: 100%; height: 160px; object-fit: cover; opacity: 0.92; }
.gallery figure:hover img { opacity: 1; }
.gallery figcaption { padding: 6px 8px; font-size: 0.72em; color: var(--text-dim); letter-spacing: 0.04em; }

.lightbox {
  position: fixed; inset: 0; z-index: 10000; display: none;
  align-items: center; justify-content: center; padding: 30px;
  background: rgba(2, 6, 4, 0.95); cursor: zoom-out;
}
.lightbox.show { display: flex; }
.lightbox img {
  max-width: 92vw; max-height: 88vh; object-fit: contain;
  border: 1px solid var(--phos-dim); box-shadow: 0 0 40px rgba(87,240,138,0.3);
}

/* ===== ouroboros easter-egg modal ========================================= */
#ouroboros-modal {
  position: fixed; inset: 0; z-index: 10000;
  display: none; align-items: center; justify-content: center;
  background: radial-gradient(circle at 50% 50%, rgba(2, 8, 4, 0.9), rgba(0, 0, 0, 0.98));
  animation: fadeIn 0.6s ease-in;
}
#ouroboros-modal.show { display: flex; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes rotate { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes pulse { 0%, 100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.05); opacity: 0.82; } }

.ouroboros-container { text-align: center; animation: pulse 3s ease-in-out infinite; }
.ouroboros-img {
  width: 400px; height: 400px; max-width: 80vw; max-height: 80vw;
  filter: drop-shadow(0 0 34px rgba(87, 240, 138, 0.7));
  animation: rotate 20s linear infinite;
}
.symbols-overlay { position: absolute; width: 400px; height: 400px; max-width: 80vw; max-height: 80vw; top: 0; left: 50%; transform: translateX(-50%); pointer-events: none; }
.symbol { position: absolute; font-size: 20px; color: var(--phos); opacity: 0.6; text-shadow: 0 0 12px rgba(87, 240, 138, 0.9); }
.ouroboros-text { font-family: var(--mono); font-size: 2em; color: var(--phos); text-shadow: 0 0 22px rgba(87, 240, 138, 0.85); margin-top: 28px; letter-spacing: 0.4em; }
.ouroboros-subtext { font-family: var(--mono); font-size: 1em; color: var(--phos-dim); margin-top: 14px; letter-spacing: 0.1em; }
.ouroboros-subtext.close { margin-top: 28px; cursor: pointer; color: var(--amber); }
.ouroboros-subtext.close:hover { text-shadow: var(--glow-amber); }

/* ===== responsive ========================================================= */
@media (max-width: 620px) {
  body { padding: 10px; }
  .container { margin: 20px auto; }
  .window-body { padding: 22px 18px 26px; }
  .nav-grid { grid-template-columns: 1fr; }
  .window-bar .path { display: none; }
  .ctl-hint { width: 100%; margin-left: 0; }
  .ouroboros-text { font-size: 1.4em; }
}

/* ===== respect reduced motion ============================================= */
@media (prefers-reduced-motion: reduce) {
  body::before { animation: none; }
  .boot-line { animation: none; opacity: 1; }
  .cursor { animation: none; }
  .ouroboros-img { animation: none; }
  .ouroboros-container { animation: none; }
  .entry.pulse .entry-glyph { animation: none; }
}