style.css

/* CodeQuest: Math Edition — Main Stylesheet */

:root {
  --blue-dark: #1a3a5c;
  --blue-mid: #2563a8;
  --blue-light: #5ba3d9;
  --blue-sky: #c8e6f8;
  --green: #27ae60;
  --green-light: #a8e6c0;
  --yellow: #f5c518;
  --yellow-light: #fff3c0;
  --orange: #e67e22;
  --purple: #8e44ad;
  --purple-light: #d4a8e8;
  --white: #ffffff;
  --off-white: #f0f4f8;
  --gray-light: #dce3ec;
  --gray: #7f8c9a;
  --text-dark: #1a2840;
  --shadow: 0 4px 12px rgba(0,0,0,0.15);
  --radius: 16px;
  --radius-sm: 8px;
}

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

body {
  font-family: 'Segoe UI', 'Comic Sans MS', 'Arial Rounded MT Bold', Arial, sans-serif;
  background: linear-gradient(135deg, #1a3a5c 0%, #2563a8 50%, #1a3a5c 100%);
  min-height: 100vh;
  color: var(--text-dark);
  overflow: hidden;
  font-size: 18px;
  user-select: none;
}

/* ===== SCREENS ===== */
.screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.4s ease;
}
.screen.hidden { opacity: 0; pointer-events: none; }

/* ===== TITLE SCREEN ===== */
#title-screen {
  background: linear-gradient(160deg, #0d2240 0%, #1a4a8c 40%, #1d6a9a 100%);
  gap: 24px;
}
.title-logo {
  font-size: 64px;
  font-weight: 900;
  color: var(--yellow);
  text-shadow: 0 4px 0 #b8860b, 0 8px 16px rgba(0,0,0,0.4);
  letter-spacing: -2px;
  animation: titleBounce 2s ease-in-out infinite;
}
.title-sub {
  font-size: 28px;
  color: var(--blue-sky);
  font-weight: 700;
  letter-spacing: 2px;
}
@keyframes titleBounce {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.btn-primary {
  background: linear-gradient(135deg, var(--yellow) 0%, #f0a500 100%);
  color: var(--blue-dark);
  border: none;
  border-radius: 48px;
  padding: 18px 52px;
  font-size: 26px;
  font-weight: 900;
  cursor: pointer;
  box-shadow: 0 6px 0 #b8860b, var(--shadow);
  transition: transform 0.1s, box-shadow 0.1s;
  min-height: 64px;
  min-width: 200px;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 0 #b8860b, var(--shadow); }
.btn-primary:active { transform: translateY(4px); box-shadow: 0 2px 0 #b8860b; }

.btn-secondary {
  background: var(--white);
  color: var(--blue-dark);
  border: 3px solid var(--blue-mid);
  border-radius: 48px;
  padding: 14px 40px;
  font-size: 20px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s;
  min-height: 54px;
}
.btn-secondary:hover { background: var(--blue-sky); }

/* ===== WORLD SELECT ===== */
#world-select {
  background: linear-gradient(160deg, #0d2240 0%, #1a4a8c 60%, #1d6a9a 100%);
  gap: 20px;
  padding: 20px;
}
.world-select-title {
  font-size: 36px;
  font-weight: 900;
  color: var(--yellow);
  text-shadow: 0 3px 6px rgba(0,0,0,0.3);
}
.worlds-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 860px;
  width: 100%;
}
.world-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
  cursor: pointer;
  box-shadow: 0 6px 0 rgba(0,0,0,0.2), var(--shadow);
  transition: transform 0.15s, box-shadow 0.15s;
  position: relative;
  min-height: 140px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.world-card:hover:not(.locked) { transform: translateY(-4px); box-shadow: 0 10px 0 rgba(0,0,0,0.2), var(--shadow); }
.world-card.locked { opacity: 0.55; cursor: not-allowed; }
.world-card .world-emoji { font-size: 40px; }
.world-card .world-name { font-size: 18px; font-weight: 800; color: var(--blue-dark); }
.world-card .world-topic { font-size: 14px; color: var(--gray); font-weight: 600; }
.world-card .world-stars { font-size: 16px; color: var(--yellow); letter-spacing: 2px; }
.world-card .lock-icon { font-size: 32px; position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); }
.world-card.w1 { border-top: 6px solid #e74c3c; }
.world-card.w2 { border-top: 6px solid #27ae60; }
.world-card.w3 { border-top: 6px solid #f39c12; }
.world-card.w4 { border-top: 6px solid #2980b9; }
.world-card.w5 { border-top: 6px solid #8e44ad; }
.world-card.w6 { border-top: 6px solid #16a085; }

/* ===== GAME SCREEN ===== */
#game-screen {
  background: #e8f4fd;
  flex-direction: row;
  align-items: stretch;
  padding: 0;
}

/* Top bar */
.top-bar {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 64px;
  background: var(--blue-dark);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 16px;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.top-bar .puzzle-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--white);
  flex: 1;
}
.top-bar .star-display {
  font-size: 22px;
  color: var(--yellow);
  font-weight: 700;
}
.top-bar .total-stars {
  font-size: 16px;
  color: var(--blue-sky);
  font-weight: 600;
}
.btn-back {
  background: transparent;
  border: 2px solid var(--blue-sky);
  color: var(--blue-sky);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s;
  min-height: 42px;
}
.btn-back:hover { background: rgba(255,255,255,0.15); }

/* Progress dots */
.progress-dots {
  display: flex;
  gap: 8px;
  align-items: center;
}
.progress-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--gray);
  transition: background 0.3s;
}
.progress-dot.done { background: var(--yellow); }
.progress-dot.current { background: var(--white); box-shadow: 0 0 0 3px var(--yellow); }

/* Game layout */
.game-layout {
  position: absolute;
  top: 64px;
  left: 0; right: 0; bottom: 0;
  display: flex;
  flex-direction: row;
  gap: 0;
}

/* Scene panel (left) */
.scene-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #d0e8f8;
  position: relative;
  overflow: hidden;
}
#game-canvas {
  width: 100%;
  height: 100%;
}

/* Code panel (right) */
.code-panel {
  width: 380px;
  background: #1e2d4a;
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow: hidden;
}
.code-panel-header {
  background: #152238;
  padding: 14px 16px;
  font-size: 16px;
  font-weight: 800;
  color: var(--blue-sky);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.blocks-palette {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-bottom: 2px solid #0a1626;
  max-height: 240px;
  overflow-y: auto;
}
.blocks-palette-label {
  font-size: 13px;
  color: var(--blue-sky);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.block {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: var(--white);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 17px;
  font-weight: 700;
  cursor: grab;
  display: flex;
  align-items: center;
  gap: 8px;
  border: 2px solid transparent;
  transition: all 0.15s;
  box-shadow: 0 3px 0 #1d4ed8;
  min-height: 48px;
  white-space: nowrap;
}
.block:hover { transform: translateX(4px); border-color: var(--yellow); }
.block:active { cursor: grabbing; transform: scale(0.97); }
.block.block-orange { background: linear-gradient(135deg, #f97316 0%, #ea580c 100%); box-shadow: 0 3px 0 #c2410c; }
.block.block-green { background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%); box-shadow: 0 3px 0 #166534; }
.block.block-purple { background: linear-gradient(135deg, #a855f7 0%, #9333ea 100%); box-shadow: 0 3px 0 #7e22ce; }
.block.block-yellow { background: linear-gradient(135deg, #eab308 0%, #ca8a04 100%); box-shadow: 0 3px 0 #a16207; color: #1a2840; }
.block.block-teal { background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%); box-shadow: 0 3px 0 #0f766e; }
.block.dragging { opacity: 0.5; cursor: grabbing; }
.block .block-icon { font-size: 20px; }
.block .block-num-input {
  background: rgba(255,255,255,0.25);
  border: 2px solid rgba(255,255,255,0.5);
  border-radius: 6px;
  color: white;
  font-size: 16px;
  font-weight: 800;
  width: 48px;
  padding: 2px 6px;
  text-align: center;
}
.block .block-num-input:focus { outline: none; border-color: var(--yellow); background: rgba(255,255,255,0.35); }

/* Program slot */
.program-area {
  flex: 1;
  padding: 12px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.program-area-label {
  font-size: 13px;
  color: var(--blue-sky);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.program-slot {
  min-height: 60px;
  background: rgba(255,255,255,0.05);
  border: 2px dashed rgba(255,255,255,0.2);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  transition: border-color 0.2s, background 0.2s;
}
.program-slot.drag-over {
  border-color: var(--yellow);
  background: rgba(245, 197, 24, 0.1);
}
.program-slot .slot-placeholder {
  color: rgba(255,255,255,0.3);
  font-size: 16px;
  text-align: center;
  padding: 12px;
  pointer-events: none;
}
.program-block {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: grab;
  box-shadow: 0 2px 0 #1d4ed8;
  min-height: 48px;
  position: relative;
  animation: blockSlide 0.2s ease-out;
}
@keyframes blockSlide {
  from { transform: translateX(20px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}
.program-block.pb-orange { background: linear-gradient(135deg, #f97316 0%, #ea580c 100%); box-shadow: 0 2px 0 #c2410c; }
.program-block.pb-green { background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%); box-shadow: 0 2px 0 #166534; }
.program-block.pb-purple { background: linear-gradient(135deg, #a855f7 0%, #9333ea 100%); box-shadow: 0 2px 0 #7e22ce; }
.program-block.pb-yellow { background: linear-gradient(135deg, #eab308 0%, #ca8a04 100%); box-shadow: 0 2px 0 #a16207; color: #1a2840; }
.program-block.pb-teal { background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%); box-shadow: 0 2px 0 #0f766e; }
.program-block .delete-btn {
  margin-left: auto;
  background: rgba(0,0,0,0.25);
  border: none;
  color: white;
  border-radius: 50%;
  width: 26px;
  height: 26px;
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
  flex-shrink: 0;
}
.program-block .delete-btn:hover { background: rgba(255,0,0,0.4); }
.program-block .pb-num-input {
  background: rgba(255,255,255,0.25);
  border: 2px solid rgba(255,255,255,0.5);
  border-radius: 6px;
  color: white;
  font-size: 16px;
  font-weight: 800;
  width: 48px;
  padding: 2px 6px;
  text-align: center;
}
.program-block .pb-num-input:focus { outline: none; border-color: var(--yellow); }
.program-block.indent-1 { margin-left: 24px; }
.program-block.indent-2 { margin-left: 48px; }
.program-block.executing { box-shadow: 0 0 0 3px var(--yellow); animation: pulseExec 0.5s ease-in-out infinite; }
@keyframes pulseExec { 0%,100% { box-shadow: 0 0 0 3px var(--yellow); } 50% { box-shadow: 0 0 0 6px rgba(245,197,24,0.5); } }

/* Control buttons */
.code-controls {
  padding: 12px;
  display: flex;
  gap: 8px;
  border-top: 2px solid #0a1626;
}
.btn-run {
  flex: 1;
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
  color: white;
  border: none;
  border-radius: 12px;
  padding: 14px;
  font-size: 20px;
  font-weight: 900;
  cursor: pointer;
  box-shadow: 0 4px 0 #166534;
  transition: all 0.1s;
  min-height: 54px;
}
.btn-run:hover { transform: translateY(-2px); box-shadow: 0 6px 0 #166534; }
.btn-run:active { transform: translateY(2px); box-shadow: 0 2px 0 #166534; }
.btn-run:disabled { background: linear-gradient(135deg, #6b7280 0%, #4b5563 100%); box-shadow: 0 4px 0 #374151; cursor: not-allowed; transform: none; }
.btn-reset {
  background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
  color: white;
  border: none;
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 4px 0 #c2410c;
  transition: all 0.1s;
  min-height: 54px;
  min-width: 54px;
}
.btn-reset:hover { transform: translateY(-2px); }
.btn-reset:active { transform: translateY(2px); box-shadow: 0 2px 0 #c2410c; }
.btn-hint {
  background: linear-gradient(135deg, #eab308 0%, #ca8a04 100%);
  color: #1a2840;
  border: none;
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 4px 0 #a16207;
  transition: all 0.1s;
  min-height: 54px;
  min-width: 64px;
}
.btn-hint:hover { transform: translateY(-2px); }

/* ===== ZIP SPEECH BUBBLE ===== */
.zip-container {
  position: fixed;
  bottom: 20px;
  left: 20px;
  display: flex;
  align-items: flex-end;
  gap: 12px;
  z-index: 200;
  pointer-events: none;
}
.zip-robot {
  font-size: 56px;
  animation: zipBob 3s ease-in-out infinite;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.3));
  flex-shrink: 0;
}
@keyframes zipBob {
  0%,100% { transform: translateY(0) rotate(-3deg); }
  50% { transform: translateY(-8px) rotate(3deg); }
}
.zip-bubble {
  background: white;
  border-radius: var(--radius);
  border-bottom-left-radius: 4px;
  padding: 14px 18px;
  max-width: 320px;
  font-size: 17px;
  font-weight: 600;
  color: var(--blue-dark);
  box-shadow: var(--shadow);
  border: 3px solid var(--blue-sky);
  animation: bubblePop 0.3s ease-out;
  pointer-events: auto;
}
@keyframes bubblePop {
  from { transform: scale(0.8); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}
.zip-bubble.hidden { display: none; }

/* ===== CELEBRATIONS ===== */
#celebration-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
}
#celebration-overlay.hidden { display: none; }
.celebration-card {
  background: white;
  border-radius: 24px;
  padding: 40px 60px;
  text-align: center;
  box-shadow: 0 16px 48px rgba(0,0,0,0.3);
  animation: celebPop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  max-width: 480px;
}
@keyframes celebPop {
  from { transform: scale(0.5) rotate(-5deg); opacity: 0; }
  to { transform: scale(1) rotate(0); opacity: 1; }
}
.celebration-stars {
  font-size: 52px;
  letter-spacing: 8px;
  margin: 16px 0;
  animation: starsSpin 0.6s ease-out 0.3s both;
}
@keyframes starsSpin {
  from { transform: scale(0) rotate(-180deg); }
  to { transform: scale(1) rotate(0); }
}
.celebration-title { font-size: 36px; font-weight: 900; color: var(--blue-dark); }
.celebration-msg { font-size: 20px; color: var(--gray); margin: 8px 0 24px; }
.btn-next {
  background: linear-gradient(135deg, var(--green) 0%, #1e8449 100%);
  color: white;
  border: none;
  border-radius: 48px;
  padding: 18px 52px;
  font-size: 24px;
  font-weight: 900;
  cursor: pointer;
  box-shadow: 0 6px 0 #1a5e2e;
  transition: all 0.1s;
}
.btn-next:hover { transform: translateY(-2px); }

/* Confetti canvas */
#confetti-canvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 490;
}

/* ===== WOBBLE ERROR ===== */
.wobble { animation: wobble 0.5s ease-in-out; }
@keyframes wobble {
  0%,100% { transform: rotate(0); }
  20% { transform: rotate(-8deg); }
  40% { transform: rotate(8deg); }
  60% { transform: rotate(-5deg); }
  80% { transform: rotate(5deg); }
}

/* ===== SCROLLBARS ===== */
.blocks-palette::-webkit-scrollbar,
.program-area::-webkit-scrollbar { width: 6px; }
.blocks-palette::-webkit-scrollbar-track,
.program-area::-webkit-scrollbar-track { background: transparent; }
.blocks-palette::-webkit-scrollbar-thumb,
.program-area::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.2); border-radius: 3px; }

/* ===== KEYBOARD SELECTED ===== */
.block.kb-selected { border: 3px solid var(--yellow); box-shadow: 0 0 0 3px rgba(245,197,24,0.4); }

/* ===== TOOLTIP ===== */
.tooltip {
  position: absolute;
  background: var(--blue-dark);
  color: white;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  pointer-events: none;
  z-index: 1000;
  white-space: nowrap;
  animation: fadeIn 0.2s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* ===== MOBILE SAFETY ===== */
@media (max-width: 700px) {
  .code-panel { width: 100%; }
  .game-layout { flex-direction: column; }
  .worlds-grid { grid-template-columns: repeat(2, 1fr); }
}