:root {
  --cyan: #22d3ee;
  --cyan-dark: #0891b2;
  --purple: #a78bfa;
  --purple-dark: #7c3aed;
  --orange: #fb923c;
  --orange-dark: #ea580c;
  --silver: #cbd5e1;
  --pink: #f472b6;
  --pink-dark: #db2777;
  --bg-deep: #0b1026;
  --bg-panel: rgba(255, 255, 255, 0.06);
  --bg-panel-solid: #1a2140;
  --text: #e6f1ff;
  --cell: clamp(46px, 9vw, 74px);
  --danger: #f43f5e;
  --success: #34d399;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  background: radial-gradient(circle at 20% 10%, #1e1b4b 0%, var(--bg-deep) 55%, #060814 100%);
  color: var(--text);
  font-family: "Trebuchet MS", "Comic Sans MS", "Segoe UI", sans-serif;
  overflow-x: hidden;
}

.stars {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    radial-gradient(2px 2px at 10% 20%, #ffffff88 40%, transparent 100%),
    radial-gradient(2px 2px at 80% 30%, #ffffff66 40%, transparent 100%),
    radial-gradient(1.5px 1.5px at 50% 70%, #ffffff55 40%, transparent 100%),
    radial-gradient(1.5px 1.5px at 30% 85%, #ffffff44 40%, transparent 100%),
    radial-gradient(2px 2px at 90% 80%, #ffffff55 40%, transparent 100%),
    radial-gradient(1.5px 1.5px at 65% 15%, #ffffff44 40%, transparent 100%);
  background-repeat: no-repeat;
  opacity: 0.6;
}

.app {
  position: relative;
  z-index: 1;
  max-width: 1400px;
  margin: 0 auto;
  padding: 14px 18px 28px;
}

/* ---------- Topbar ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 10px 18px;
  border-radius: 18px;
  background: var(--bg-panel);
  border: 1px solid rgba(34, 211, 238, 0.35);
  box-shadow: 0 0 24px rgba(34, 211, 238, 0.12);
  margin-bottom: 16px;
}

.topbar h1 {
  margin: 0;
  font-size: 1.5rem;
  color: var(--cyan);
  text-shadow: 0 0 12px rgba(34, 211, 238, 0.6);
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.subtitle {
  font-size: 0.9rem;
  color: var(--silver);
  font-weight: normal;
  text-shadow: none;
}

.level-badge {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--purple-dark), var(--purple));
  padding: 8px 16px;
  border-radius: 14px;
  font-weight: bold;
  font-size: 1.2rem;
  box-shadow: 0 4px 0 #5b21b6, 0 6px 14px rgba(0,0,0,0.35);
}

.level-label {
  font-size: 0.7rem;
  letter-spacing: 1px;
  opacity: 0.85;
  margin-right: 4px;
}

.level-sep {
  opacity: 0.6;
  margin: 0 2px;
}

.btn-ghost {
  background: transparent;
  border: 2px solid var(--orange);
  color: var(--orange);
  padding: 8px 14px;
  border-radius: 12px;
  font-weight: bold;
  cursor: pointer;
  font-size: 0.95rem;
  transition: all 0.15s ease;
}

.btn-ghost:hover {
  background: var(--orange);
  color: #1a1200;
}

.player-info {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.player-name {
  font-weight: bold;
  color: var(--silver);
  margin-right: 4px;
}

/* ---------- Login ---------- */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.login-form input {
  padding: 12px 14px;
  border-radius: 12px;
  border: 2px solid var(--cyan);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  font-size: 1.05rem;
  text-align: center;
}

.login-form input:focus {
  outline: none;
  box-shadow: 0 0 10px rgba(34, 211, 238, 0.6);
}

/* ---------- Galería de niveles ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.gallery-card {
  border-radius: 14px;
  padding: 14px 10px;
  text-align: center;
  cursor: pointer;
  border: 2px solid transparent;
  background: rgba(255,255,255,0.06);
  transition: transform 0.08s ease;
}

.gallery-card:hover:not(.locked) {
  transform: translateY(-3px);
}

.gallery-card .g-icon { font-size: 1.6rem; display: block; margin-bottom: 4px; }
.gallery-card .g-name { font-size: 0.8rem; }

.gallery-card.done { border-color: var(--success); background: rgba(52, 211, 153, 0.15); }
.gallery-card.current { border-color: var(--cyan); box-shadow: 0 0 12px rgba(34,211,238,0.4); }
.gallery-card.locked { opacity: 0.4; cursor: not-allowed; }

/* ---------- Layout ---------- */
.layout {
  display: grid;
  grid-template-columns: 200px 1fr 1fr;
  grid-template-areas: "blocks program board";
  gap: 16px;
  align-items: start;
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
    grid-template-areas: "blocks" "board" "program";
  }
}

.panel {
  background: var(--bg-panel);
  border: 1px solid rgba(203, 213, 225, 0.18);
  border-radius: 18px;
  padding: 14px;
  backdrop-filter: blur(6px);
}

.panel h2 {
  margin: 0 0 12px;
  font-size: 1rem;
  color: var(--silver);
}

.panel-blocks { grid-area: blocks; display: flex; flex-direction: column; gap: 12px; }
.panel-program { grid-area: program; }
.panel-board { grid-area: board; }

/* ---------- Puzzle-piece block buttons ---------- */
.block-btn {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 14px 14px 14px 22px;
  border: none;
  border-radius: 16px;
  font-size: 1rem;
  font-weight: bold;
  color: #0b1026;
  cursor: pointer;
  text-align: left;
  transition: transform 0.08s ease, box-shadow 0.08s ease;
}

.block-btn::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: inherit;
  box-shadow: inset -2px -2px 3px rgba(0,0,0,0.15);
}

.block-icon { font-size: 1.4rem; }

.block-btn.move { background: var(--cyan); box-shadow: 0 5px 0 var(--cyan-dark); }
.block-btn.turn-right { background: var(--orange); box-shadow: 0 5px 0 var(--orange-dark); }
.block-btn.turn-left { background: var(--orange); box-shadow: 0 5px 0 var(--orange-dark); }
.block-btn.repeat { background: var(--purple); box-shadow: 0 5px 0 var(--purple-dark); }
.block-btn.if-wall { background: var(--pink); box-shadow: 0 5px 0 var(--pink-dark); }

.block-btn:active:not(:disabled) {
  transform: translateY(4px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.3);
}

.block-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  filter: grayscale(0.6);
}

/* ---------- Program zone ---------- */
.program-header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 10px;
}

.program-header h2 { margin: 0; }

.program-actions { display: flex; gap: 8px; margin-left: auto; }

.block-budget {
  background: var(--orange);
  color: #2a1400;
  font-weight: bold;
  font-size: 0.85rem;
  padding: 5px 10px;
  border-radius: 10px;
}

.block-budget.at-limit {
  background: var(--danger);
  color: white;
}

.block-budget.shake {
  animation: shake 0.3s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

.btn-trash, .btn-close-repeat {
  border: none;
  border-radius: 10px;
  padding: 8px 12px;
  font-weight: bold;
  cursor: pointer;
  font-size: 0.85rem;
}

.btn-trash { background: var(--danger); color: white; }
.btn-close-repeat { background: var(--success); color: #06281c; }

.hidden { display: none !important; }

.program-sequence {
  min-height: 110px;
  background: rgba(0,0,0,0.25);
  border: 2px dashed rgba(203,213,225,0.3);
  border-radius: 14px;
  padding: 12px;
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 8px;
  margin-bottom: 14px;
}

.empty-hint {
  color: var(--silver);
  opacity: 0.7;
  font-size: 0.9rem;
  margin: auto;
}

.chip {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;
  border-radius: 10px;
  font-weight: bold;
  font-size: 0.95rem;
  color: #0b1026;
  cursor: pointer;
  user-select: none;
}

.chip.move { background: var(--cyan); }
.chip.turnRight, .chip.turnLeft { background: var(--orange); }

.chip .chip-x {
  margin-left: 4px;
  font-size: 0.75rem;
  opacity: 0.6;
}

.chip:hover .chip-x { opacity: 1; }

.repeat-block {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  border: 2px solid var(--purple);
  border-radius: 12px;
  background: rgba(167, 139, 250, 0.12);
  min-width: 160px;
}

.repeat-block.active {
  border-color: var(--success);
  box-shadow: 0 0 12px rgba(52, 211, 153, 0.5);
}

.repeat-head {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: bold;
  color: var(--purple);
}

.repeat-count-controls {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.repeat-count-controls button {
  border: none;
  background: var(--purple);
  color: white;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  cursor: pointer;
  font-weight: bold;
}

.repeat-delete {
  border: none;
  background: var(--danger);
  color: white;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  cursor: pointer;
}

.repeat-body {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  min-height: 34px;
  padding: 4px;
  border-radius: 8px;
  background: rgba(0,0,0,0.2);
}

.repeat-body-hint {
  font-size: 0.75rem;
  opacity: 0.6;
  margin: auto;
}

.if-block {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  border: 2px solid var(--pink);
  border-radius: 12px;
  background: rgba(244, 114, 182, 0.12);
  min-width: 160px;
}

.if-block.active {
  border-color: var(--success);
  box-shadow: 0 0 12px rgba(52, 211, 153, 0.5);
}

.if-head {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: bold;
  color: var(--pink);
}

.if-head .repeat-delete {
  margin-left: auto;
}

.run-btn {
  width: 100%;
  padding: 16px;
  font-size: 1.3rem;
  font-weight: bold;
  color: #06281c;
  background: linear-gradient(135deg, var(--success), #10b981);
  border: none;
  border-radius: 16px;
  box-shadow: 0 6px 0 #047857;
  cursor: pointer;
  transition: transform 0.08s ease, box-shadow 0.08s ease;
}

.run-btn:active:not(:disabled) {
  transform: translateY(5px);
  box-shadow: 0 1px 0 #047857;
}

.run-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ---------- Board ---------- */
.board-wrap {
  display: flex;
  justify-content: center;
}

.board {
  position: relative;
  display: grid;
  border-radius: 12px;
  overflow: hidden;
  border: 3px solid var(--cyan);
  box-shadow: 0 0 30px rgba(34, 211, 238, 0.25);
}

.cell {
  width: var(--cell);
  height: var(--cell);
  border: 1px solid rgba(203, 213, 225, 0.12);
  background: rgba(255,255,255,0.02);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: calc(var(--cell) * 0.5);
}

.cell:nth-child(odd) {
  background: rgba(255,255,255,0.04);
}

.cell-belt {
  background: rgba(250, 204, 21, 0.18);
}

.belt-arrow {
  display: inline-block;
  color: #facc15;
  font-size: calc(var(--cell) * 0.45);
  filter: drop-shadow(0 0 4px rgba(250, 204, 21, 0.6));
}

.cell-ice {
  background: rgba(125, 211, 252, 0.28);
}

.entity {
  position: absolute;
  top: 0;
  left: 0;
  width: var(--cell);
  height: var(--cell);
  transition: transform 0.3s ease;
  pointer-events: none;
}

.robot-spin {
  width: 100%;
  height: 100%;
  transition: transform 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.robot-spin svg { width: 78%; height: 78%; filter: drop-shadow(0 0 6px rgba(34,211,238,0.7)); }

.goal-flag {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: calc(var(--cell) * 0.55);
  animation: floaty 1.6s ease-in-out infinite;
}

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.robot-bump {
  animation: bump 0.25s ease;
}

@keyframes bump {
  0% { filter: brightness(1); }
  50% { filter: brightness(2) drop-shadow(0 0 10px red); }
  100% { filter: brightness(1); }
}

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(6, 8, 20, 0.75);
  display: flex;
  z-index: 50;
  overflow-y: auto;
  padding: 24px 12px;
}

.modal {
  background: var(--bg-panel-solid);
  border: 2px solid var(--cyan);
  border-radius: 20px;
  padding: 28px;
  max-width: 380px;
  max-height: 100%;
  overflow-y: auto;
  /* Centra el modal, pero si no cabe en la pantalla se ancla arriba y
     dentro del overlay con scroll, en vez de recortarse sin poder cerrarlo. */
  margin: auto;
  text-align: center;
  box-shadow: 0 0 40px rgba(34, 211, 238, 0.4);
  animation: pop 0.25s ease;
}

.gallery-modal {
  max-width: 640px;
  width: 100%;
}

@keyframes pop {
  from { transform: scale(0.85); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-icon { font-size: 3.2rem; margin-bottom: 10px; }

.modal-message {
  font-size: 1.1rem;
  line-height: 1.4;
  margin-bottom: 20px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.gallery-modal .modal-actions {
  position: sticky;
  bottom: 0;
  margin-top: 10px;
  padding-top: 10px;
  background: var(--bg-panel-solid);
}

.btn-primary {
  border: none;
  border-radius: 12px;
  padding: 12px 18px;
  font-weight: bold;
  font-size: 1rem;
  cursor: pointer;
  background: var(--cyan);
  color: #06281c;
  box-shadow: 0 4px 0 var(--cyan-dark);
}

.btn-primary.success {
  background: var(--success);
  box-shadow: 0 4px 0 #047857;
}

.btn-primary:active {
  transform: translateY(3px);
  box-shadow: none;
}