/* ============================================================
   TERMINAL TEACHER — colorful pixel style
   ============================================================ */

:root {
  --bg: #1a1b2e;
  --bg-2: #24263e;
  --panel: #2b2d4a;
  --ink: #f4f1ea;
  --ink-dim: #b8b5c9;
  --teal: #2aa9a2;
  --teal-bright: #45e0d8;
  --yellow: #ffd23f;
  --pink: #ff6b97;
  --orange: #ff9f43;
  --green: #7cfc98;
  --red: #ff5f56;
  --black: #12121f;
  --font-pixel: 'Press Start 2P', monospace;
  --font-body: 'VT323', monospace;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 22px;
  min-height: 100%;
}

/* subtle pixel-grid background */
body {
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 24px 24px;
}

code {
  font-family: var(--font-body);
  background: var(--black);
  color: var(--yellow);
  padding: 1px 8px;
  border: 2px solid #000;
  border-radius: 0;
  /* long commands must wrap, never crop; clone keeps the chip border on each line */
  white-space: pre-wrap;
  overflow-wrap: break-word;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

img { image-rendering: pixelated; }

/* ---------- chunky pixel button ---------- */
.pixel-btn {
  font-family: var(--font-pixel);
  font-size: 13px;
  color: var(--ink);
  background: var(--panel);
  border: 4px solid #000;
  box-shadow: 0 6px 0 #000;
  padding: 14px 22px;
  cursor: pointer;
  text-transform: uppercase;
  transition: transform .06s, box-shadow .06s;
}
.pixel-btn:hover { transform: translateY(2px); box-shadow: 0 4px 0 #000; }
.pixel-btn:active { transform: translateY(6px); box-shadow: 0 0 0 #000; }
.pixel-btn.primary { background: var(--teal); color: #fff; }
.pixel-btn.big { font-size: 18px; padding: 20px 44px; }
.pixel-btn.tiny { font-size: 9px; padding: 8px 10px; box-shadow: 0 4px 0 #000; }

/* ---------- HUD ---------- */
#hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 18px;
  background: var(--bg-2);
  border-bottom: 4px solid #000;
  position: sticky;
  top: 0;
  z-index: 50;
}
.hud-logo {
  font-family: var(--font-pixel);
  font-size: 12px;
  color: var(--teal-bright);
  background: none;
  border: none;
  cursor: pointer;
  letter-spacing: 1px;
}
.logo-mini { color: var(--yellow); }
.hud-stats { display: flex; gap: 10px; }
.hud-chip {
  font-family: var(--font-pixel);
  font-size: 10px;
  background: var(--panel);
  border: 3px solid #000;
  padding: 7px 10px;
  color: var(--ink);
}
.hud-chip.xp { color: var(--yellow); }
.hud-chip.streak { color: var(--orange); }
button.hud-chip { cursor: pointer; }
button.hud-chip:hover { background: var(--teal); color: #fff; }

/* ---------- screens ---------- */
.screen {
  max-width: 900px;
  margin: 0 auto;
  padding: 30px 20px 220px; /* bottom space so mascot never covers content */
}
.screen.wide { max-width: 1250px; }
.screen-title {
  font-family: var(--font-pixel);
  font-size: 24px;
  color: var(--yellow);
  text-align: center;
  text-shadow: 4px 4px 0 #000;
  margin: 10px 0 6px;
}
.screen-sub { text-align: center; color: var(--ink-dim); font-size: 24px; margin: 0 0 26px; }

/* ---------- title screen ---------- */
.title-wrap { text-align: center; padding-top: 40px; }
.game-logo {
  font-family: var(--font-pixel);
  margin: 0 0 10px;
  line-height: 1.35;
}
.logo-line1, .logo-line2 { display: block; }
.logo-line1 {
  font-size: 44px;
  color: var(--teal-bright);
  text-shadow: 5px 5px 0 #000, 10px 10px 0 rgba(42,169,162,.35);
}
.logo-line2 {
  font-size: 44px;
  color: var(--yellow);
  text-shadow: 5px 5px 0 #000, 10px 10px 0 rgba(255,210,63,.3);
}
.tagline { font-size: 26px; color: var(--ink-dim); margin: 6px 0 18px; }
.title-mascot {
  height: 230px;
  display: block;
  margin: 0 auto 24px;
  animation: bob 2.4s ease-in-out infinite;
}
@keyframes bob { 0%,100% { transform: translateY(0);} 50% { transform: translateY(-10px);} }
.title-footnote { color: var(--ink-dim); font-size: 20px; margin-top: 22px; }

/* ---------- OS picker ---------- */
.os-grid {
  display: flex;
  flex-direction: column;
  gap: 22px;
  max-width: 680px;
  margin: 26px auto 0;
}
.os-card {
  font-family: var(--font-body);
  background: var(--panel);
  border: 4px solid #000;
  box-shadow: 0 8px 0 #000;
  color: var(--ink);
  padding: 22px 26px;
  cursor: pointer;
  display: grid;
  grid-template-columns: 100px 1fr auto;
  grid-template-rows: auto auto;
  column-gap: 24px;
  align-items: center;
  text-align: left;
  transition: transform .08s, box-shadow .08s;
}
.os-card:hover { transform: translateY(3px); box-shadow: 0 5px 0 #000; background: #343860; }
.os-card.detected { border-color: var(--yellow); outline: 3px solid var(--yellow); }
.os-card.locked {
  opacity: .5;
  filter: grayscale(.7);
  cursor: not-allowed;
}
.os-card.locked:hover { transform: none; box-shadow: 0 8px 0 #000; background: var(--panel); }
/* pixel-art level icons keep the global image-rendering: pixelated */
.os-icon .level-icon { height: 66px; width: auto; display: block; margin: 0 auto; }
.os-icon { grid-row: 1 / 3; display: block; }
.os-icon svg, .os-icon .os-logo {
  height: 78px;
  width: auto;
  display: block;
  margin: 0 auto;
  image-rendering: auto;   /* real logos, not pixel art — keep them smooth */
}
.os-name { grid-column: 2; font-family: var(--font-pixel); font-size: 16px; display: block; color: var(--teal-bright); margin-bottom: 8px; }
.os-desc { grid-column: 2; font-size: 23px; color: var(--ink-dim); display: block; line-height: 1.15; }
.os-flag {
  grid-column: 3;
  grid-row: 1 / 3;
  font-family: var(--font-pixel);
  font-size: 9px;
  background: var(--yellow);
  color: #000;
  border: 3px solid #000;
  padding: 6px 9px;
  white-space: nowrap;
}
@media (max-width: 560px) {
  .os-card { grid-template-columns: 64px 1fr; }
  .os-flag { grid-column: 2; grid-row: 3; justify-self: start; margin-top: 8px; }
}

/* ---------- lesson map ---------- */
#lesson-path {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}
.map-toolbar {
  width: min(560px, 100%);
  margin: 0 auto 4px;
}
.map-node {
  width: min(560px, 100%);
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--panel);
  border: 4px solid #000;
  box-shadow: 0 6px 0 #000;
  padding: 14px 18px;
  cursor: pointer;
  color: var(--ink);
  font-family: var(--font-body);
  text-align: left;
  transition: transform .07s, box-shadow .07s;
}
.map-node:hover:not(.locked) { transform: translateY(2px); box-shadow: 0 4px 0 #000; background: #343860; }
.map-node.locked { opacity: .45; cursor: not-allowed; filter: grayscale(.6); }
.map-node.done { border-color: var(--green); }
.map-node.fun { border-color: var(--pink); }
.node-badge {
  font-family: var(--font-pixel);
  font-size: 16px;
  min-width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--teal);
  border: 3px solid #000;
  color: #fff;
}
.map-node.done .node-badge { background: var(--green); color: #000; }
.map-node.locked .node-badge { background: #555; }
.map-node.fun .node-badge { background: var(--pink); }
.node-info { flex: 1; }
.node-title { font-family: var(--font-pixel); font-size: 12px; display: block; margin-bottom: 6px; }
.node-desc { color: var(--ink-dim); font-size: 21px; display: block; line-height: 1.1; }
.node-xp { font-family: var(--font-pixel); font-size: 10px; color: var(--yellow); white-space: nowrap; }

/* ---------- lesson layout ---------- */
/* ---------- retro desktop ---------- */
#screen-lesson.screen, #screen-fun.screen {
  max-width: none;
  padding: 12px 14px 64px;    /* bottom clears the fixed taskbar */
}
.desktop-area {
  position: relative;
  height: calc(100vh - 132px); /* HUD + padding + taskbar */
  min-height: 420px;
  overflow: hidden;
}
.wm-window { position: absolute; }
.wm-window .window-body { overflow-y: auto; }
#lesson-panel.wm-window, #fun-panel.wm-window { display: flex; flex-direction: column; }
#lesson-panel .window-body, #fun-panel .window-body { flex: 1; min-height: 0; }
.terminal.wm-window { min-height: 0; }
.wm-window .term-body { max-height: none; }

/* focused window gets the bright title bar */
.wm-window .window-bar, .wm-window .term-titlebar { background: #2e3049; }
.wm-window.focused .window-bar, .wm-window.focused .term-titlebar { background: #46508c; }

.win-controls { display: flex; gap: 5px; margin-right: 6px; }
.term-titlebar .win-controls { margin-left: auto; }
.win-btn {
  font-family: var(--font-pixel);
  font-size: 9px;
  width: 24px;
  height: 24px;
  padding: 0;
  background: var(--panel);
  border: 2px solid #000;
  color: var(--ink);
  cursor: pointer;
}
.win-btn:hover { background: var(--teal); color: #fff; }

/* ---------- taskbar ---------- */
#taskbar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  height: 48px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  background: var(--bg-2);
  border-top: 4px solid #000;
  z-index: 5000;
}
.task-start {
  font-family: var(--font-pixel);
  font-size: 10px;
  background: var(--teal);
  color: #fff;
  border: 3px solid #000;
  box-shadow: 0 3px 0 #000;
  padding: 7px 12px;
  cursor: pointer;
}
.task-start:hover { transform: translateY(1px); box-shadow: 0 2px 0 #000; }
#task-windows { display: flex; gap: 8px; flex: 1; overflow-x: auto; }
.task-btn {
  font-family: var(--font-pixel);
  font-size: 9px;
  background: var(--panel);
  border: 3px solid #000;
  color: var(--ink-dim);
  padding: 7px 12px;
  cursor: pointer;
  white-space: nowrap;
}
.task-btn.active {
  background: var(--bg);
  color: var(--ink);
  box-shadow: inset 0 3px 0 rgba(0,0,0,.6);   /* pressed-in, retro style */
}
#task-clock {
  font-family: var(--font-pixel);
  font-size: 11px;
  color: var(--yellow);
  background: var(--black);
  border: 3px solid #000;
  padding: 6px 10px;
}

/* narrow screens: stacked layout, no window management */
@media (max-width: 899px) {
  #taskbar { display: none !important; }
  .desktop-area {
    height: auto;
    overflow: visible;
    display: flex;
    flex-direction: column;
    gap: 18px;
  }
  .wm-window {
    position: static !important;
    width: auto !important;
    height: auto !important;
  }
  .wm-window .resize-grip, .win-controls { display: none !important; }
  .wm-window .term-body { max-height: 520px; }
  #screen-lesson.screen, #screen-fun.screen { padding-bottom: 220px; }
}


/* panels styled as little desktop windows, matching the terminal */
.pixel-window {
  background: var(--bg-2);
  border: 4px solid #000;
  box-shadow: 0 6px 0 #000;
  padding: 0;
}
.window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #3a3d5c;
  border-bottom: 4px solid #000;
  padding: 8px 12px;
}
.window-bar, .term-titlebar { user-select: none; }

/* ---------- window resizing ---------- */
.resize-grip {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 22px;
  height: 22px;
  cursor: nwse-resize;
  touch-action: none;
  z-index: 6;
  /* pixel corner: black edge + teal triangle */
  background: linear-gradient(135deg, transparent 0 45%, #000 45% 58%, var(--teal) 58% 100%);
}
.resize-grip:hover {
  background: linear-gradient(135deg, transparent 0 45%, #000 45% 58%, var(--teal-bright) 58% 100%);
}
.window-title {
  flex: 1;
  font-family: var(--font-pixel);
  font-size: 11px;
  color: var(--teal-bright);
  line-height: 1.5;
  margin-left: 6px;
}
.window-body { padding: 16px; }

.step-dots { display: flex; gap: 6px; margin-bottom: 14px; flex-wrap: wrap; }
.step-dots .dot {
  width: 16px; height: 16px;
  background: #444764;
  border: 2px solid #000;
}
.step-dots .dot.done { background: var(--green); }
.step-dots .dot.now { background: var(--yellow); animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { background: var(--orange); } }

.step-card {
  background: var(--panel);
  border: 4px solid #000;
  padding: 14px 16px;
  font-size: 24px;
  line-height: 1.25;
  min-height: 120px;
}
.step-card .mission-label {
  font-family: var(--font-pixel);
  font-size: 10px;
  color: var(--pink);
  display: block;
  margin-bottom: 10px;
}
.step-card .talk-label {
  font-family: var(--font-pixel);
  font-size: 10px;
  color: var(--teal-bright);
  display: block;
  margin-bottom: 10px;
}
#step-actions { margin-top: 14px; text-align: right; }

/* ---------- terminal ---------- */
.terminal {
  border: 4px solid #000;
  box-shadow: 0 8px 0 #000;
  background: var(--black);
  display: flex;
  flex-direction: column;
  min-height: 480px;
}
.term-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #3a3d5c;
  border-bottom: 4px solid #000;
  padding: 8px 12px;
  font-size: 19px;
  color: var(--ink-dim);
}
.term-titlebar .tdot, .window-bar .tdot { width: 14px; height: 14px; border: 2px solid #000; display: inline-block; }
.tdot.r { background: var(--red); } .tdot.y { background: var(--yellow); } .tdot.g { background: var(--green); }
.term-title-text { margin-left: 8px; }

.term-body {
  position: relative;
  flex: 1;
  padding: 12px 14px;
  overflow-y: auto;
  max-height: 520px;
  cursor: text;
  font-size: 23px;
  line-height: 1.22;
}
/* CRT scanlines */
.term-body::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(0,0,0,.14) 0 2px, transparent 2px 4px);
  mix-blend-mode: multiply;
}
.term-line { white-space: pre-wrap; word-break: break-word; color: #d9f7e2; }
.term-line .seg-dir { color: var(--teal-bright); font-weight: bold; }
.term-line .seg-file { color: #d9f7e2; }
.term-line .seg-err { color: var(--red); }
.term-line .seg-warn { color: var(--orange); }
.term-line .seg-info { color: var(--yellow); }
.term-line .seg-magic { color: var(--pink); }
.term-line .seg-green { color: var(--green); }
.term-line.echoed { color: #fff; }

.term-input-row { display: flex; align-items: baseline; }

.term-statusbar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  background: #23253a;
  border-top: 4px solid #000;
  padding: 5px 12px;
  font-size: 18px;
  color: var(--ink-dim);
  white-space: nowrap;
  overflow: hidden;
}
.term-status-path { overflow: hidden; text-overflow: ellipsis; }
.term-status-safe { color: var(--green); }
.term-prompt { color: var(--green); white-space: pre; }
.term-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #fff;
  font-family: var(--font-body);
  font-size: 23px;
  caret-color: var(--green);
  padding: 0;
}

/* matrix / train overlays live inside .term-body */
.term-overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  background: var(--black);
}
.train-pre {
  position: absolute;
  top: 30%;
  color: var(--yellow);
  font-size: 18px;
  line-height: 1.05;
  white-space: pre;
}

/* ---------- mascot ---------- */
#mascot {
  position: fixed;
  right: 14px;
  bottom: 54px;               /* perches above the taskbar */
  z-index: 9999;              /* Clippy mode: always above the windows */
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  pointer-events: none;       /* bubble never blocks clicks... */
}
#mascot-img {
  height: 195px;
  filter: drop-shadow(4px 6px 0 rgba(0,0,0,.45));
  transition: transform .15s;
  pointer-events: auto;       /* ...but Byte himself is grabbable */
  cursor: grab;
  touch-action: none;
}
#mascot.pop #mascot-img { animation: mascot-pop .4s steps(3); }
@keyframes mascot-pop { 0% { transform: scale(.92);} 60% { transform: scale(1.06);} 100% { transform: scale(1);} }

.bubble {
  max-width: 300px;
  background: #fffdf5;
  color: #1d1e2e;
  border: 4px solid #000;
  box-shadow: 4px 4px 0 rgba(0,0,0,.4);
  padding: 12px 14px;
  font-size: 23px;
  line-height: 1.15;
  margin-bottom: 10px;
  margin-right: 40px;
  position: relative;
}
.bubble::after {
  content: "";
  position: absolute;
  bottom: -14px;
  right: 34px;
  border: 7px solid transparent;
  border-top-color: #000;
}
.bubble code { background: #eee7d4; color: #a3541b; border-color: #a3541b; }

/* ---------- fun zone ---------- */
.fun-intro { font-size: 23px; color: var(--ink-dim); margin: 6px 0 14px; }
.fun-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.fun-card {
  font-family: var(--font-body);
  background: var(--panel);
  border: 3px solid #000;
  box-shadow: 0 4px 0 #000;
  color: var(--ink);
  padding: 10px;
  cursor: pointer;
  text-align: left;
}
.fun-card:hover { background: #343860; transform: translateY(2px); box-shadow: 0 2px 0 #000; }
.fun-card code { display: inline-block; margin-bottom: 6px; }
.fun-card span { display: block; font-size: 20px; color: var(--ink-dim); }

/* ---------- celebration overlay ---------- */
#overlay, #ask-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;             /* modals beat even Clippy-mode Byte */
  background: rgba(10, 10, 20, .82);
  display: flex;
  align-items: center;
  justify-content: center;
}
#ask-mascot { height: 160px; }
#ask-msg { font-size: 24px; line-height: 1.2; margin: 12px 0 20px; }
.ask-card { max-width: 420px; }
.overlay-card {
  background: var(--bg-2);
  border: 5px solid #000;
  box-shadow: 0 10px 0 #000, 0 0 0 6px var(--yellow);
  padding: 28px 36px;
  text-align: center;
  max-width: 460px;
  animation: card-in .25s steps(4);
}
@keyframes card-in { from { transform: scale(.7); } to { transform: scale(1); } }
#overlay-mascot { height: 210px; }
#overlay-title {
  font-family: var(--font-pixel);
  color: var(--yellow);
  font-size: 18px;
  text-shadow: 3px 3px 0 #000;
  margin: 12px 0 8px;
}
#overlay-msg { font-size: 25px; line-height: 1.2; margin: 0 0 20px; }
.overlay-actions { display: flex; gap: 14px; justify-content: center; }

#confetti-layer { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.confetto {
  position: absolute;
  width: 10px; height: 10px;
  top: -20px;
  animation: fall linear forwards;
}
@keyframes fall {
  to { transform: translateY(110vh) rotate(720deg); }
}

/* ============================================================
   PHONE PASS — compact scale for small screens
   ============================================================ */
@media (max-width: 640px) {

  /* pocket-sized Byte: helpful, not in the way */
  #mascot { right: 8px; bottom: 8px; }
  #mascot-img { height: 106px; }
  .bubble {
    max-width: 215px;
    font-size: 19px;
    padding: 8px 10px;
    margin-right: 16px;
    margin-bottom: 6px;
  }

  /* compact HUD */
  #hud { padding: 6px 10px; gap: 6px; }
  .hud-logo { font-size: 9px; }
  .hud-stats { gap: 5px; }
  .hud-chip { font-size: 8px; padding: 5px 6px; border-width: 2px; }

  /* screens & typography */
  .screen { padding: 18px 12px 150px; }
  .screen-title { font-size: 17px; }
  .screen-sub { font-size: 20px; margin-bottom: 18px; }

  /* title screen */
  .logo-line1, .logo-line2 { font-size: 28px; }
  .tagline { font-size: 21px; }
  .title-mascot { height: 160px; }
  .pixel-btn.big { font-size: 14px; padding: 15px 30px; }

  /* OS + level cards */
  .os-grid { gap: 14px; margin-top: 16px; }
  .os-card {
    grid-template-columns: 54px 1fr;
    column-gap: 14px;
    padding: 14px 14px;
    box-shadow: 0 5px 0 #000;
  }
  .os-icon svg, .os-icon .os-logo, .os-icon .level-icon { height: 46px; }
  .os-name { font-size: 12px; margin-bottom: 5px; }
  .os-desc { font-size: 19px; }
  .os-flag { font-size: 7px; padding: 4px 6px; }

  /* quest map */
  .map-node { padding: 10px 12px; gap: 10px; }
  .node-badge { min-width: 42px; height: 42px; font-size: 13px; }
  .node-title { font-size: 10px; margin-bottom: 4px; }
  .node-desc { font-size: 18px; }
  .node-xp { font-size: 8px; }

  /* lesson: the mission window pins under the HUD so instructions stay
     on screen while the keyboard + terminal have the rest */
  #screen-lesson #lesson-panel {
    position: sticky !important;   /* outranks the stacked-mode static reset */
    top: 50px;
    z-index: 60;
    box-shadow: 0 5px 0 #000, 0 12px 26px rgba(0, 0, 0, .6);
  }
  #lesson-panel .window-body {
    max-height: 32vh;      /* long explanations scroll inside the pinned window */
    overflow-y: auto;
  }
  .window-body { padding: 10px 12px; }
  .window-title { font-size: 10px; }
  .step-card { font-size: 20px; padding: 10px 12px; min-height: 0; }
  .step-dots { margin-bottom: 10px; }
  .terminal { min-height: 0; }
  .term-body, .wm-window .term-body {
    font-size: 19px;
    max-height: 46vh;      /* leaves room for the on-screen keyboard */
    min-height: 180px;
  }
  .term-input { font-size: 19px; }   /* stays ≥16px so iOS won't zoom-jump */
  .term-titlebar { font-size: 15px; }
  .term-statusbar { font-size: 14px; padding: 4px 10px; }

  /* fun zone */
  .fun-cards { grid-template-columns: 1fr; }
  .fun-intro { font-size: 20px; }

  /* celebration */
  .overlay-card { padding: 20px 22px; max-width: 92vw; }
  #overlay-mascot { height: 150px; }
  #overlay-title { font-size: 14px; }
  #overlay-msg { font-size: 21px; }
}