/* --- tree.gg BBS chrome ----------------------------------------------- */

/* Use a CP437-flavored monospace until a custom font is loaded.
   IBM Plex Mono / Cascadia / Consolas all degrade gracefully. */
@font-face {
  font-family: "BBS";
  src: local("IBM Plex Mono"), local("Cascadia Mono"), local("Consolas"),
       local("Menlo"), local("DejaVu Sans Mono");
  font-display: swap;
}

:root {
  /* Amber phosphor (default) */
  --bg:        #0a0500;
  --fg:        #ffb000;
  --fg-dim:    #b67500;
  --fg-bright: #ffd866;
  --accent:    #ff6a00;
  --selected-bg: #ffb000;
  --selected-fg: #0a0500;
  --link:      #ffd866;
  --link-hover:#ffffff;

  --col: 80ch;
  --line: 1.4;
  --fs: clamp(13px, 1.8vw, 16px);

  --glow: 0 0 1px currentColor, 0 0 5px rgba(255, 176, 0, 0.35);

  --tap: 44px;
}

body.theme-green {
  --bg:        #001a05;
  --fg:        #33ff66;
  --fg-dim:    #1f9b3d;
  --fg-bright: #b2ffb2;
  --accent:    #6effc8;
  --selected-bg: #33ff66;
  --selected-fg: #001a05;
  --link:      #b2ffb2;
  --link-hover:#ffffff;
  --glow: 0 0 1px currentColor, 0 0 5px rgba(51, 255, 102, 0.35);
}

body.theme-cga {
  --bg:        #000000;
  --fg:        #aaaaaa;
  --fg-dim:    #555555;
  --fg-bright: #ffffff;
  --accent:    #55ffff;
  --selected-bg: #aaaaaa;
  --selected-fg: #000000;
  --link:      #55ffff;
  --link-hover:#ffffff;
  --glow: 0 0 1px currentColor;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "BBS", ui-monospace, monospace;
  font-size: var(--fs);
  line-height: var(--line);
  overflow-x: hidden;
  /* iOS: prevent rubber band tinting and color pickers on long-press */
  -webkit-tap-highlight-color: rgba(0,0,0,0);
  -webkit-text-size-adjust: 100%;
}

html { height: 100%; }
body {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
}

/* Inputs in this site never need iOS auto-zoom. */
input, textarea, select { font-size: 16px; }
@media (min-width: 480px) { input, textarea, select { font-size: inherit; } }

#screen {
  flex: 1 1 auto;
  min-height: 0; /* allow flex item to shrink so overflow:auto kicks in */
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  padding: clamp(12px, 3vw, 32px);
  max-width: var(--col);
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

body.glow-on #screen,
body.glow-on #statusbar,
body.glow-on #softkeys { text-shadow: var(--glow); }

/* --- statusbar ------------------------------------------------------- */

#statusbar {
  flex: 0 0 auto;
  width: 100%;
  max-width: var(--col);
  margin: 0 auto;
  padding: 4px clamp(12px, 3vw, 32px) max(4px, env(safe-area-inset-bottom));
  box-sizing: border-box;
  background: var(--bg);
  color: var(--fg-dim);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1em;
  font-size: 0.8em;
  border-top: 1px solid var(--fg-dim);
}
#sb-right { text-align: right; }

/* --- softkey bar ------------------------------------------------------ */

#softkeys {
  flex: 0 0 auto;
  background: var(--bg);
  border-top: 1px solid var(--fg-dim);
  padding: 6px clamp(8px, 2vw, 16px);
  box-sizing: border-box;
  width: 100%;
  max-width: var(--col);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 6px;
  min-height: var(--tap);
  align-items: center;
}
#softkeys:empty { display: none; }

#softkeys .sk {
  display: inline-flex;
  align-items: center;
  gap: 0.5ch;
  padding: 6px 10px;
  min-height: var(--tap);
  min-width: var(--tap);
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--fg-dim);
  font: inherit;
  cursor: pointer;
  text-decoration: none;
  border-radius: 0;
  -webkit-user-select: none;
  user-select: none;
  white-space: nowrap;
}
#softkeys .sk .k { color: var(--accent); font-weight: bold; }
#softkeys .sk:hover, #softkeys .sk:focus {
  background: var(--fg-dim);
  color: var(--bg);
  outline: none;
}
#softkeys .sk:active {
  background: var(--fg);
  color: var(--bg);
}
#softkeys .sk[disabled] { opacity: 0.35; cursor: not-allowed; }
#softkeys .sk-hint {
  cursor: default;
  background: transparent;
  color: var(--fg-dim);
  border-color: transparent;
  padding: 6px 6px;
  min-width: 0;
}
#softkeys .sk-hint .k { color: var(--accent); }
#softkeys .sk-hint:hover {
  background: transparent;
  color: var(--fg-dim);
}

/* --- CRT effects ------------------------------------------------------ */

#crt {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
}

#scanlines {
  position: absolute; inset: 0;
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(0,0,0,0) 0px,
    rgba(0,0,0,0) 2px,
    rgba(0,0,0,0.22) 3px
  );
  mix-blend-mode: multiply;
  opacity: 0.7;
}

#flicker {
  position: absolute; inset: 0;
  background: rgba(255,255,255,0.015);
  animation: flicker 7s infinite;
}

body:not(.crt-on) #crt { display: none; }

@keyframes flicker {
  0%, 100% { opacity: 0.015; }
  50%      { opacity: 0.04; }
  73%      { opacity: 0.005; }
}

@media (prefers-reduced-motion: reduce) {
  #flicker { animation: none; }
}

/* --- scenes (.scene) -------------------------------------------------- */

.scene { display: none; }
.scene.active { display: block; }

.scene pre,
.scene .pre {
  font-family: inherit;
  white-space: pre;
  overflow-x: auto;
}

.banner {
  color: var(--fg-bright);
  font-weight: bold;
  margin: 0 0 1em;
  font-size: clamp(0.7em, 2.6vw, 1em);
  line-height: 1.05;
}
/* Box-drawing banners go off-screen on narrow viewports; smaller font helps. */
@media (max-width: 480px) {
  .banner { font-size: 0.62em; }
}

.dim { color: var(--fg-dim); }
.bright { color: var(--fg-bright); }
.accent { color: var(--accent); }

a, .link {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}
a:hover, .link:hover { color: var(--link-hover); }

/* --- menus & lists --------------------------------------------------- */

.menu {
  list-style: none;
  padding: 0;
  margin: 1em 0;
}
.menu li {
  padding: 8px 8px;
  cursor: pointer;
  min-height: var(--tap);
  display: block;
  border-radius: 0;
}
.menu li:hover { background: rgba(255,255,255,0.05); }
.menu li[data-selected="true"] {
  background: var(--selected-bg);
  color: var(--selected-fg);
  text-shadow: none;
}
.menu li[data-selected="true"] .dim,
.menu li[data-selected="true"] .bright,
.menu li[data-selected="true"] .key { color: inherit !important; }

.menu.hotkey li {
  display: grid;
  grid-template-columns: 3ch 1fr;
  grid-template-rows: auto auto;
  column-gap: 1ch;
  row-gap: 2px;
  align-items: baseline;
}
.menu.hotkey li .key { grid-row: 1 / 3; align-self: center; }
.menu.hotkey li .mlabel {
  color: var(--fg-bright);
  grid-column: 2;
  grid-row: 1;
}
.menu.hotkey li .mhint {
  color: var(--fg-dim);
  grid-column: 2;
  grid-row: 2;
  font-size: 0.9em;
}
.menu .key {
  color: var(--accent);
  font-weight: bold;
}

/* Board list items (multi-line content). */
.board-row {
  display: grid;
  grid-template-columns: 3ch 1fr;
  column-gap: 1ch;
}
.board-row .br-meta {
  grid-column: 2;
  color: var(--fg-dim);
  font-size: 0.9em;
}
.board-row .br-summary {
  grid-column: 2;
  color: var(--fg-dim);
  font-size: 0.9em;
  margin-top: 2px;
}

/* --- prompt (login, etc.) -------------------------------------------- */

.prompt-line {
  display: flex;
  align-items: center;
  gap: 0.5ch;
  margin-top: 1em;
  flex-wrap: wrap;
}
.prompt-line label { color: var(--fg); }
.prompt-line input {
  background: transparent;
  color: var(--fg-bright);
  border: none;
  border-bottom: 1px dashed var(--fg-dim);
  outline: none;
  font: inherit;
  caret-color: var(--fg-bright);
  padding: 4px 0;
  min-width: 16ch;
  flex: 1 1 16ch;
  max-width: 30ch;
}
.prompt-line input:focus { border-bottom-color: var(--fg); }

.cursor::after {
  content: "▮";
  margin-left: 2px;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* --- thread rendering ------------------------------------------------ */

.thread-header {
  border-bottom: 1px solid var(--fg-dim);
  padding-bottom: 6px;
  margin-bottom: 1em;
}
.thread-header h1 {
  margin: 0;
  font-size: 1em;
  color: var(--fg-bright);
  word-wrap: break-word;
  overflow-wrap: anywhere;
}
.thread-meta {
  color: var(--fg-dim);
  font-size: 0.9em;
}

.thread-body { white-space: normal; overflow-wrap: anywhere; }
.thread-body h1,
.thread-body h2,
.thread-body h3 {
  font-size: 1em;
  color: var(--fg-bright);
  margin: 1.4em 0 0.4em;
}
.thread-body h2::before { content: "── "; color: var(--fg-dim); }
.thread-body h3::before { content: "─── "; color: var(--fg-dim); }
.thread-body p { margin: 0.6em 0; }
.thread-body ul, .thread-body ol { padding-left: 2.5ch; }
.thread-body li { margin: 0.3em 0; }
.thread-body blockquote {
  border-left: 2px solid var(--fg-dim);
  margin: 0.6em 0;
  padding: 0 0 0 1ch;
  color: var(--fg-dim);
}
.thread-body code {
  background: rgba(255,255,255,0.07);
  padding: 0 0.4ch;
  overflow-wrap: anywhere;
}
.thread-body pre {
  background: rgba(255,255,255,0.05);
  padding: 0.6em 1ch;
  overflow-x: auto;
}
.thread-body hr {
  border: none;
  border-top: 1px solid var(--fg-dim);
  margin: 1.2em 0;
}

.crossrefs {
  margin-top: 2em;
  border-top: 1px solid var(--fg-dim);
  padding-top: 0.6em;
  color: var(--fg-dim);
}
.crossrefs h3 { color: var(--fg-bright); margin: 0 0 0.4em; font-size: 1em; }

/* --- helpers --------------------------------------------------------- */

.stage-seedling::after  { content: " · seedling"; color: var(--fg-dim); }
.stage-budding::after   { content: " · budding"; color: var(--accent); }
.stage-evergreen::after { content: " · evergreen"; color: var(--fg-bright); }
.new-marker { color: var(--accent); font-weight: bold; }

/* --- door game: gg_tree ---------------------------------------------- */

.gg-art {
  font-family: inherit;
  white-space: pre;
  color: var(--fg-bright);
  margin: 0.4em 0;
  line-height: 1.05;
  font-size: clamp(0.8em, 2.3vw, 1em);
  overflow-x: auto;
}
.gg-stats { margin: 0.5em 0 0.8em; }
.gg-stats > div { padding: 1px 0; }
.gg-stats .bar { color: var(--fg-dim); }

.gg-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 0.4em;
}
.gg-actions button {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--fg-dim);
  font: inherit;
  padding: 8px 14px;
  cursor: pointer;
  min-height: var(--tap);
  min-width: var(--tap);
}
.gg-actions button:hover:not(:disabled) {
  background: var(--fg-dim);
  color: var(--bg);
}
.gg-actions button:disabled { opacity: 0.4; cursor: not-allowed; }
.gg-actions .k { color: var(--accent); font-weight: bold; margin-right: 0.4ch; }
.gg-flash {
  margin-top: 0.6em;
  color: var(--accent);
}

/* --- settings panel -------------------------------------------------- */

#settings {
  margin-top: 1em;
  padding: 0.8em 1ch;
  border: 1px dashed var(--fg-dim);
}
.set-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin: 6px 0;
}
.set-row > .label { min-width: 10ch; }
#settings button {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--fg-dim);
  font: inherit;
  padding: 8px 14px;
  cursor: pointer;
  min-height: var(--tap);
  min-width: var(--tap);
}
#settings button:hover { background: var(--fg-dim); color: var(--bg); }
#settings button[aria-pressed="true"] {
  background: var(--fg);
  color: var(--bg);
}
#settings button.danger {
  border-color: var(--accent);
  color: var(--accent);
}
#settings button.danger:hover {
  background: var(--accent);
  color: var(--bg);
}

/* --- narrow phones --------------------------------------------------- */

@media (max-width: 480px) {
  :root { --col: 100%; }
  #screen { padding: 10px 12px; }
  #softkeys { padding: 6px 10px; gap: 4px; }
  #softkeys .sk { padding: 8px 10px; font-size: 0.95em; }
  .menu.hotkey li { grid-template-columns: 3ch 1fr; }
  .gg-actions { gap: 6px; }
}