/* Universal Modal Styles */
.modal {
  position: fixed;
  left: 0; top: 0; width: 100vw; height: 100vh;
  background: rgba(0,0,0,0.65);
  z-index: 100000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-content {
  background: var(--card, #222);
  color: var(--text, #fff);
  border-radius: 12px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.7);
  padding: 2rem 2.5rem;
  max-width: 95vw;
  max-height: 80vh;
  overflow-y: auto;
  min-width: 320px;
}
#modal-close {
  margin-top: 1.5rem;
  display: block;
  margin-left: auto;
  margin-right: auto;
}
:root {
  --bg: #0f172a;
  --card: #111827;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --accent: #22c55e;
  --warn: #f59e0b;
  --danger: #ef4444;
  --focus: #93c5fd;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: radial-gradient(1200px 600px at 10% 10%, #111827, #0b1020), var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.5;
  position: relative;
  overflow-x: hidden;
}

/* Animated gradient backgrounds for different puzzle themes */
body.theme-cat {
  background: 
    radial-gradient(circle at 20% 80%, rgba(251, 146, 60, 0.25), transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(249, 115, 22, 0.2), transparent 60%),
    linear-gradient(135deg, #1a0f0a 0%, #2d1b10 50%, #1a0f0a 100%);
  animation: gradientShift 12s ease-in-out infinite;
}

body.theme-cat::before {
  content: '🐱';
  position: fixed;
  font-size: 9rem;
  opacity: 0.13;
  bottom: 2.5rem;
  left: 2.5rem;
  transform: rotate(-10deg);
  z-index: 2;
  pointer-events: none;
  animation: floatIcon 20s ease-in-out infinite;
}

body.theme-music {
  background: 
    radial-gradient(circle at 30% 70%, rgba(147, 51, 234, 0.25), transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(59, 130, 246, 0.2), transparent 60%),
    linear-gradient(135deg, #0a0f1a 0%, #1a1b3e 50%, #0a0f1a 100%);
  animation: gradientShift 15s ease-in-out infinite;
}

body.theme-music::before {
  content: '🎵';
  position: fixed;
  font-size: 9rem;
  opacity: 0.13;
  bottom: 2.5rem;
  right: 2.5rem;
  transform: rotate(10deg);
  z-index: 2;
  pointer-events: none;
  animation: floatIcon 18s ease-in-out infinite;
}

body.theme-food {
  background: 
    radial-gradient(circle at 40% 60%, rgba(234, 179, 8, 0.25), transparent 50%),
    radial-gradient(circle at 60% 40%, rgba(251, 191, 36, 0.2), transparent 60%),
    linear-gradient(135deg, #1a1408 0%, #2e2410 50%, #1a1408 100%);
  animation: gradientShift 14s ease-in-out infinite;
}

body.theme-food::before {
  content: '🍕';
  position: fixed;
  font-size: 9rem;
  opacity: 0.13;
  bottom: 2.5rem;
  left: 2.5rem;
  transform: rotate(-10deg);
  z-index: 2;
  pointer-events: none;
  animation: floatIcon 16s ease-in-out infinite;
}

@keyframes gradientShift {
  0%, 100% { 
    filter: hue-rotate(0deg) brightness(1); 
  }
  50% { 
    filter: hue-rotate(30deg) brightness(1.15); 
  }
}

@keyframes floatIcon {
  0%, 100% { 
    transform: translate(-50%, -50%) rotate(-15deg) scale(1);
  }
  50% { 
    transform: translate(-50%, -48%) rotate(15deg) scale(1.05);
  }
}

body.dyslexic {
  font-family: "Comic Sans MS", "Comic Sans", cursive;
  line-height: 1.6;
  word-spacing: 0.25em;
  letter-spacing: 0.05em;
}

.container {
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1rem;
}

.screen { 
  display: none;
  animation: fadeIn 0.6s ease-out;
}
.screen.active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

h1, h2, h3, h4 { margin: 0.5rem 0 1rem; }
.lede { font-size: 1.1rem; color: var(--muted); }
.rules { color: var(--muted); }

.hud {
  display: grid;
  grid-template-columns: 1fr auto auto auto auto;
  gap: 0.5rem;
  background: #0b1222;
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid #1f2937;
  margin-bottom: 1rem;
  align-items: center;
}
.hud-right { justify-self: end; }

.puzzle-card {
  background: var(--card);
  border: 1px solid #1f2937;
  padding: 1rem;
  border-radius: 10px;
  box-shadow: 0 10px 24px rgba(0,0,0,0.25);
  animation: cardEntry 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes cardEntry {
  from { 
    opacity: 0; 
    transform: scale(0.9) rotateX(10deg);
  }
  to { 
    opacity: 1; 
    transform: scale(1) rotateX(0deg);
  }
}

.label { display: block; font-weight: 600; margin-bottom: 0.25rem; }
textarea, input[type="text"], input[type="number"] {
  width: 100%;
  background: #0b1222;
  color: var(--text);
  border: 1px solid #1f2937;
  border-radius: 8px;
  padding: 0.75rem;
  font-size: 1rem;
  font-family: var(--mono);
}
textarea { min-height: 120px; resize: vertical; }

.actions { display: flex; gap: 0.5rem; margin-top: 0.75rem; flex-wrap: wrap; }
.btn {
  background: #1f2937;
  color: var(--text);
  border: 1px solid #334155;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  cursor: pointer;
}
.btn:hover { border-color: #475569; }
.btn.primary { background: var(--accent); color: #08210f; font-weight: 700; border-color: #16a34a; }
.btn.small { padding: 0.4rem 0.6rem; font-size: 0.9rem; }

.btn[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
}

.feedback { min-height: 1.3rem; margin-top: 0.5rem; }
.feedback.ok { color: var(--accent); }
.feedback.warn { color: var(--warn); }
.feedback.err { color: var(--danger); }

.tools-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.mono { font-family: var(--mono); background: #0b1222; padding: 0.5rem; border-radius: 6px; border: 1px solid #1f2937; overflow-x: auto; }
.mono.small { font-size: 0.85rem; max-height: 180px; }

dialog {
  background: var(--card);
  color: var(--text);
  border: 1px solid #1f2937;
  border-radius: 10px;
  padding: 1.5rem;
  width: min(800px, 95%);
  max-height: 90vh;
  overflow-y: auto;
}
dialog:not([open]) {
  display: none;
}
dialog::backdrop {
  background: rgba(0,0,0,0.75);
}
dialog .btn {
  opacity: 1 !important;
  cursor: pointer !important;
}

.footer { text-align: center; color: var(--muted); margin: 2rem 0; }

.story { color: var(--muted); margin-top: -0.5rem; margin-bottom: 0.75rem; }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

@media (max-width: 900px) {
  .hud { grid-template-columns: repeat(auto-fit, minmax(165px, 1fr)); }
}
@media (max-width: 720px) {
  .tools-grid { grid-template-columns: 1fr; }
}

.intro-actions { display: flex; gap: .5rem; flex-wrap: wrap; }
.hud-right { display: flex; gap: .5rem; justify-self: end; }
.leaderboard { padding-left: 1.2rem; }
.leaderboard li { margin: .25rem 0; }
.leaderboard .me { color: var(--accent); font-weight: 700; }

.tools-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1rem; }
@media (max-width: 900px) { .tools-grid { grid-template-columns: 1fr; } }

.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace; background: #0b1222; padding: .5rem; border-radius: 6px; border: 1px solid #1f2937; overflow-x: auto; }
.mono.small { font-size: .9rem; max-height: 200px; }

/* Floating cipher particles background */
.cipher-particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.cipher-particle {
  position: absolute;
  font-family: var(--mono);
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.06);
  font-weight: 700;
  animation: float linear infinite;
  user-select: none;
  bottom: -50px;
  --drift: 0px;
}

@keyframes float {
  0% {
    transform: translateY(0) translateX(0) rotate(0deg);
    opacity: 0;
  }
  5% {
    opacity: 0.1;
  }
  95% {
    opacity: 0.1;
  }
  100% {
    transform: translateY(-110vh) translateX(var(--drift)) rotate(180deg);
    opacity: 0;
  }
}

/* Ensure main content is above particles */
.container {
  position: relative;
  z-index: 10;
}

/* Button hover effects */
.btn {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.btn:active {
  transform: translateY(0);
}

.btn.primary:hover {
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.4);
}

/* Pulse animation for important buttons */
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.btn.primary {
  animation: pulse 2s ease-in-out infinite;
}

/* Success feedback animation */
.feedback.ok {
  animation: successPop 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes successPop {
  0% { transform: scale(0.8); opacity: 0; }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); opacity: 1; }
}