/* ==========================================================================
   WORD SEARCH - EXACT 1:1 SCREENSHOT VISUAL MATCH
   Complete with Start / Splash Screen & Split In-Game Board
   ========================================================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: #ffffff;
  font-family: 'Roboto', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: #000000;
}

/* ==========================================================================
   START / SPLASH SCREEN (MATCHES REFERENCE SCREENSHOT 1:1)
   ========================================================================== */
.splash-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  /* Dreamy pastel pink/purple to mint gradient */
  background: radial-gradient(circle at 50% 35%, #f5b0cb 0%, #e6a7cf 32%, #ced8be 72%, #bcdbb2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.35s ease, visibility 0.35s ease, transform 0.35s ease;
}

.splash-screen.hidden {
  opacity: 0;
  visibility: hidden;
  transform: scale(1.04);
  pointer-events: none;
}

.splash-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.75rem;
}

.splash-card {
  width: min(330px, 85vw);
  height: min(330px, 85vw);
  background: #ffffff;
  border-radius: 28px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.16), 0 2px 6px rgba(0, 0, 0, 0.08);
  position: relative;
  overflow: hidden;
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.splash-grid-bg {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  width: 100%;
}

.splash-row {
  display: flex;
  justify-content: space-between;
  font-weight: 700;
  font-size: 1.05rem;
  color: #71717a;
  line-height: 1;
  padding: 2px 0;
}

.row-highlight-orange {
  background: rgba(251, 146, 60, 0.45);
  border-radius: 9999px;
  color: #18181b;
  font-weight: 800;
  padding: 2px 4px;
}

.hl-purple {
  background: rgba(192, 132, 252, 0.55);
  border-radius: 4px;
  color: #18181b;
  font-weight: 800;
  padding: 0 3px;
}

.hl-green {
  background: rgba(74, 222, 128, 0.55);
  border-radius: 4px;
  color: #18181b;
  font-weight: 800;
  padding: 0 3px;
}

.hl-blue {
  background: rgba(56, 189, 248, 0.55);
  border-radius: 4px;
  color: #18181b;
  font-weight: 800;
  padding: 0 3px;
}

.splash-title-badge {
  position: absolute;
  top: 15%;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  filter: drop-shadow(0 10px 18px rgba(0, 0, 0, 0.22));
}

.title-pill-word {
  background: #f97316;
  border: 3px solid #ffffff;
  border-bottom: none;
  border-radius: 14px 14px 0 0;
  padding: 0.35rem 1.1rem;
  display: flex;
  gap: 0.5rem;
  font-size: 2.1rem;
  font-weight: 900;
  color: #ffffff;
  letter-spacing: 2px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.25);
}

.title-pill-search {
  background: #a855f7;
  border: 3px solid #ffffff;
  border-radius: 0 0 14px 14px;
  padding: 0.25rem 0.9rem 0.45rem;
  display: flex;
  gap: 0.35rem;
  font-size: 1.55rem;
  font-weight: 900;
  color: #ffffff;
  letter-spacing: 3px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.25);
  margin-top: -2px;
}

.title-pill-classic {
  background: #ef4444;
  border: 2.5px solid #ffffff;
  border-radius: 9999px;
  padding: 0.15rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 900;
  color: #ffffff;
  letter-spacing: 1.5px;
  margin-top: -10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  z-index: 2;
}

.splash-play-btn {
  width: 140px;
  height: 64px;
  background: linear-gradient(to bottom, #22c55e 0%, #16a34a 60%, #15803d 100%);
  border: 3px solid #86efac;
  border-radius: 20px;
  box-shadow: 0 10px 24px rgba(22, 163, 74, 0.55), 0 4px 0 #14532d;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #ffffff;
  transition: transform 0.15s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.15s ease;
  outline: none;
}

.splash-play-btn:hover {
  transform: scale(1.06) translateY(-2px);
  box-shadow: 0 14px 28px rgba(22, 163, 74, 0.65), 0 5px 0 #14532d;
}

.splash-play-btn:active {
  transform: scale(0.98) translateY(3px);
  box-shadow: 0 4px 12px rgba(22, 163, 74, 0.4), 0 1px 0 #14532d;
}

.play-svg-icon {
  width: 34px;
  height: 34px;
  filter: drop-shadow(0 2px 3px rgba(0, 0, 0, 0.3));
}

/* ==========================================================================
   MAIN IN-GAME SCREEN LAYOUT - TWO PARTS FULL SPLIT
   ========================================================================== */
.game-container {
  display: flex;
  width: 100vw;
  height: 100vh;
  padding: 0;
  background: #ffffff;
  align-items: stretch;
}

/* LEFT PANEL (Pure White Background - Header, Words List, Controls) */
.left-panel {
  flex: 0 0 35%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.5rem 1.75rem;
  background-color: #ffffff;
}

/* Top Header */
.top-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.gear-btn {
  width: 34px;
  height: 34px;
  border: 2px solid #000000;
  border-radius: 6px;
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #000000;
  padding: 3px;
  transition: transform 0.1s ease;
}

.gear-btn:hover {
  background: #f4f4f5;
}

.gear-svg {
  width: 22px;
  height: 22px;
}

.sound-header-btn {
  font-size: 1.1rem;
}

.category-title {
  font-size: 1.45rem;
  font-weight: 500;
  color: #000000;
  letter-spacing: 0.2px;
}

/* Center Word List */
.words-list {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
  margin: auto 0;
  width: 100%;
}

.word-item {
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: 1px;
  color: #000000;
  text-transform: uppercase;
  padding: 1px 8px;
  border-radius: 4px;
  text-align: center;
  display: inline-block;
  line-height: 1.35;
  transition: background-color 0.2s ease;
}

/* Found Word State */
.word-item.found {
  color: #000000;
}

.word-item.hint-pulse {
  animation: pulseHint 1s ease 3;
}

@keyframes pulseHint {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); color: #2563eb; }
}

/* Bottom Controls */
.bottom-controls {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.ctrl-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: none;
  border: none;
  cursor: pointer;
  color: #000000;
  padding: 0;
}

.hint-box {
  width: 26px;
  height: 26px;
  border: 2px solid #000000;
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1;
}

.hint-count {
  font-size: 1.3rem;
  font-weight: 500;
}

.stopwatch-svg {
  width: 24px;
  height: 24px;
}

.timer-text {
  font-size: 1.3rem;
  font-weight: 500;
  font-family: 'Roboto', 'Inter', monospace, sans-serif;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   RIGHT PANEL (Entire Right Part is Off-White Background)
   ========================================================================== */
.right-panel {
  flex: 1;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #f4f5f8; /* Entire right side off-white */
  padding: 1.5rem;
  min-width: 0;
  min-height: 0;
}

.grid-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  max-width: min(86vh, 64vw, 760px);
  max-height: min(86vh, 64vw, 760px);
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: none;
  background: transparent;
}

/* SVG Highlight Layer */
.svg-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

#highlightsSvg {
  z-index: 1;
}

#activeSelectionSvg {
  z-index: 3;
}

/* Clean Letter Grid (No Borders) */
.letter-matrix {
  display: grid;
  width: 100%;
  height: 100%;
  position: relative;
  z-index: 2;
}

.grid-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(1.3rem, 2.5vw, 2.2rem);
  font-weight: 500;
  color: #000000;
  text-transform: uppercase;
  cursor: pointer;
  user-select: none;
}

.grid-cell.hint-glow {
  animation: cellGlow 1s ease infinite;
}

@keyframes cellGlow {
  0%, 100% { transform: scale(1); filter: drop-shadow(0 0 4px #3b82f6); }
  50% { transform: scale(1.25); filter: drop-shadow(0 0 8px #2563eb); }
}

/* Toast */
.word-toast {
  position: fixed;
  top: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: #000000;
  color: #ffffff;
  padding: 0.5rem 1.4rem;
  border-radius: 9999px;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 1px;
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s ease;
  z-index: 200;
}

.word-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 300;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: #ffffff;
  border: 2px solid #000000;
  border-radius: 14px;
  padding: 1.75rem;
  max-width: 420px;
  width: 100%;
  text-align: center;
}

.modal-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.modal-heading {
  font-size: 1.5rem;
  font-weight: 700;
}

.close-x {
  background: none;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
}

.stars-icon {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.modal-sub {
  color: #52525b;
  margin-bottom: 1.25rem;
  font-size: 0.95rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.stat-pill {
  background: #f4f4f5;
  border-radius: 8px;
  padding: 0.75rem;
}

.stat-lbl {
  display: block;
  font-size: 0.75rem;
  color: #71717a;
  text-transform: uppercase;
  font-weight: 700;
}

.stat-val {
  font-size: 1.25rem;
  font-weight: 700;
}

.next-btn {
  width: 100%;
  padding: 0.85rem;
  background: #22c55e;
  border: 2px solid #16a34a;
  color: #ffffff;
  border-radius: 10px;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
}

.category-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.cat-btn {
  padding: 0.6rem;
  background: #f4f4f5;
  border: 1.5px solid #e4e4e7;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.cat-btn.active, .cat-btn:hover {
  border-color: #000000;
  background: #ffffff;
}

.setting-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
  border-top: 1px solid #e4e4e7;
  font-weight: 600;
}

.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0;
  background-color: #ccc; border-radius: 34px; transition: .3s;
}
.slider:before {
  position: absolute; content: ""; height: 18px; width: 18px; left: 3px; bottom: 3px;
  background-color: white; border-radius: 50%; transition: .3s;
}
input:checked + .slider { background-color: #22c55e; }
input:checked + .slider:before { transform: translateX(20px); }

/* Responsive for narrow screens */
@media (max-width: 800px) {
  .game-container {
    flex-direction: column;
    padding: 0.75rem;
  }
  .left-panel {
    flex: 0 0 auto;
    max-width: 100%;
    padding: 0.25rem;
  }
  .words-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.35rem;
    max-height: 80px;
    overflow-y: auto;
  }
  .word-item {
    font-size: 1rem;
    padding: 0 6px;
  }
  .category-title {
    font-size: 1.2rem;
  }
  .bottom-controls {
    margin-top: 0.4rem;
  }
  .grid-wrapper {
    max-width: 94vw;
    max-height: 94vw;
  }
}