/* =====================================================
   Picturle — Game Stylesheet
   ===================================================== */

/* === CSS Custom Properties (Theme) === */
:root {
  --bg:          #0d0d1a;
  --panel-bg:    #13132b;
  --border:      #1e2050;
  --text:        #e8e8f0;
  --text-muted:  #8888aa;

  /* Brand accent: emerald green for "clear" */
  --accent:      #2ecc71;
  --accent-2:    #ffd166;
  --accent-glow: rgba(46, 204, 113, 0.35);
  --accent-grad: linear-gradient(135deg, #2ecc71, #27ae60);

  /* Tile colors */
  --tile-1: #ff6b6b;
  --tile-2: #4ecdc4;
  --tile-3: #45b7d1;
  --tile-4: #96e080;
  --tile-5: #ffd166;
  --tile-6: #c77dff;

  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-bottom: 60px;
}

/* === Header === */
header {
  width: 100%;
  padding: 12px 16px 6px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}

#header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 800px;
  margin: 0 auto;
}

.header-left, .header-right {
  width: 80px;
  display: flex;
  align-items: center;
}

.header-right { justify-content: flex-end; }

.header-center { text-align: center; flex: 1; }

header h1 {
  font-size: 1.9rem;
  font-weight: 900;
  letter-spacing: 3px;
  text-transform: uppercase;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.tagline {
  color: var(--text-muted);
  font-size: 0.72rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-top: 2px;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 1rem;
  cursor: pointer;
  color: var(--text-muted);
  transition: background 0.15s, color 0.15s;
}

.icon-btn:hover {
  background: rgba(255,255,255,0.06);
  color: var(--text);
}

.hint-link {
  font-size: 0.78rem;
  color: var(--accent-2);
  text-decoration: none;
  border: 1px solid rgba(255, 209, 102, 0.3);
  border-radius: 8px;
  padding: 5px 10px;
  transition: background 0.15s;
  white-space: nowrap;
}

.hint-link:hover {
  background: rgba(255, 209, 102, 0.1);
}

/* === Ad Containers === */
.ad-container {
  width: 100%;
  text-align: center;
  padding: 4px 0;
  min-height: 54px;
  background: rgba(255,255,255,0.02);
}

#ad-top { margin-bottom: 6px; }

.ad-sidebar {
  width: 160px;
  flex-shrink: 0;
  padding-top: 8px;
}

#ad-bottom-sticky {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 320px;
  z-index: 50;
  background: var(--panel-bg);
  border-top: 1px solid var(--border);
  padding: 5px;
  display: none;
}

/* === Layout Wrapper === */
#layout-wrapper {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 16px;
  width: 100%;
  max-width: 1200px;
  padding: 0 12px;
}

/* === Game Area === */
#game-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

/* === HUD Panel (Moves / Par / Streak) === */
#score-panel {
  display: flex;
  gap: 0;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 350px;
  overflow: hidden;
}

.score-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 6px;
  gap: 1px;
  border-right: 1px solid var(--border);
}

.score-item:last-child { border-right: none; }

.score-label {
  font-size: 0.65rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
}

.score-item > span:last-child,
.score-item > span:nth-child(2) {
  font-size: 1.25rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.score-item span.bump {
  animation: scoreBump 0.2s ease;
}

@keyframes scoreBump {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.3); color: var(--accent-2); }
  100% { transform: scale(1); }
}

/* === Canvas Wrapper === */
#canvas-wrapper { position: relative; }

#game-canvas {
  display: block;
  width: min(380px, calc(100vw - 24px));
  height: auto;
  aspect-ratio: 1 / 1;
  border: 2px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 0 30px var(--accent-glow), inset 0 0 20px rgba(0,0,0,0.3);
  cursor: pointer;
}

/* === Numpad Panel === */
#numpad-panel {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  width: 310px;
  margin-top: 8px;
}

.numpad-btn {
  width: 52px;
  height: 52px;
  border-radius: 10px;
  border: 2px solid var(--border);
  background: var(--panel-bg);
  color: var(--text);
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.numpad-btn:hover {
  background: rgba(255,255,255,0.08);
  border-color: var(--text-muted);
}

.numpad-btn.active {
  border-color: #4ecdc4;
  box-shadow: 0 0 8px rgba(78,205,196,0.4);
}

.numpad-clear {
  background: rgba(255,107,107,0.1);
  color: #ff6b6b;
  border-color: rgba(255,107,107,0.3);
}

.numpad-clear:hover {
  background: rgba(255,107,107,0.2);
  border-color: #ff6b6b;
}

.palette-hint {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  text-align: center;
  margin-top: 2px;
}


/* === Overlay Screens === */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 8, 20, 0.92);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 200;
  backdrop-filter: blur(4px);
  overflow-y: auto;
  padding: 20px;
}

.overlay.hidden { display: none; }

.overlay-content {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px 32px;
  text-align: center;
  max-width: 380px;
  width: 100%;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6), 0 0 40px var(--accent-glow);
}

.overlay-title {
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: 2px;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 6px;
}

.day-badge {
  display: inline-block;
  background: rgba(46, 204, 113, 0.12);
  border: 1px solid rgba(46, 204, 113, 0.3);
  border-radius: 20px;
  padding: 3px 14px;
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 14px;
}

.overlay-subtitle {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.controls-hint {
  background: rgba(46,204,113,0.07);
  border: 1px solid rgba(46,204,113,0.15);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

/* === Buttons === */
.btn-primary {
  background: var(--accent-grad);
  color: #fff;
  border: none;
  border-radius: 12px;
  padding: 13px 32px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  display: block;
  width: 100%;
  margin: 8px 0;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px var(--accent-glow);
}

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

.btn-secondary {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px 32px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  display: block;
  width: 100%;
  margin: 6px 0;
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.06);
  color: var(--text);
}

.btn-hint-link {
  display: block;
  margin: 8px auto 0;
  font-size: 0.8rem;
  color: var(--accent-2);
  text-decoration: none;
  padding: 6px;
  opacity: 0.8;
  transition: opacity 0.15s;
}

.btn-hint-link:hover { opacity: 1; }

.btn-skip {
  background: rgba(255,255,255,0.04);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 24px;
  font-size: 0.85rem;
  cursor: pointer;
  margin-top: 14px;
  transition: background 0.15s;
}

.btn-skip:not(:disabled):hover {
  background: rgba(255,255,255,0.1);
  color: var(--text);
}

.btn-skip:disabled { opacity: 0.4; cursor: not-allowed; }

/* === Streak badge === */
.streak-badge {
  font-size: 1.1rem;
  color: var(--accent-2);
  margin-bottom: 10px;
  font-weight: 700;
}

/* === Share Emoji Grid === */
.share-emoji-grid {
  font-size: 1.2rem;
  line-height: 1.6;
  letter-spacing: 1px;
  margin: 12px 0;
  white-space: pre-wrap;
  font-family: monospace;
  background: rgba(0,0,0,0.25);
  border-radius: 10px;
  padding: 12px;
}

/* === Copy confirm === */
.copy-confirm {
  font-size: 0.82rem;
  color: var(--accent);
  margin: 4px 0;
  font-weight: 600;
}

/* === Countdown === */
.countdown-label {
  font-size: 0.72rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 14px;
  margin-bottom: 2px;
}

.countdown-clock {
  font-size: 1.8rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 10px;
}

/* === Stats Grid (2×2) === */
#stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 16px 0 20px;
}

.stat-card {
  background: rgba(0,0,0,0.25);
  border-radius: 12px;
  padding: 14px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stat-card span {
  font-size: 1.8rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--text);
}

.stat-card label {
  font-size: 0.7rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* === Interstitial === */
.interstitial-content { max-width: 500px; }

.ad-notice {
  font-size: 0.65rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 10px;
}

/* === SEO Content === */
#seo-content {
  max-width: 720px;
  width: 100%;
  padding: 40px 20px 20px;
  color: var(--text-muted);
}

#seo-content h2 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin: 22px 0 8px;
  letter-spacing: 0.5px;
}

#seo-content p, #seo-content li {
  font-size: 0.88rem;
  line-height: 1.7;
  margin-bottom: 8px;
}

#seo-content ul { padding-left: 20px; }
#seo-content li { margin-bottom: 6px; }
#seo-content strong { color: var(--text); }
#seo-content a { color: var(--accent); text-decoration: none; }
#seo-content a:hover { text-decoration: underline; }

/* === Footer === */
footer {
  text-align: center;
  padding: 16px 20px;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  width: 100%;
  margin-top: 20px;
}

footer a {
  color: var(--accent-2);
  text-decoration: none;
}

footer a:hover { text-decoration: underline; }

/* === Utilities === */
.hidden { display: none !important; }

/* =====================================================
   RESPONSIVE
   ===================================================== */
@media (max-width: 900px) {
  .ad-sidebar { display: none; }
}

@media (max-width: 480px) {
  header h1 { font-size: 1.5rem; }

  .hint-link { font-size: 0.7rem; padding: 4px 7px; }

  #score-panel { width: 100%; max-width: 350px; }

  .score-item > span:nth-child(2) { font-size: 1rem; }

  .overlay-content { padding: 22px 18px; }

  .overlay-title { font-size: 1.5rem; }

  .stars-display { font-size: 2rem; }

  #ad-bottom-sticky { display: block; }
}