/* ============================================================
   Bubble Pop · 3D Tactile Pop-It & Bubble Wrap Styles
   ============================================================ */

*, *::before, *::after {
  box-sizing: border-box;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: #0b0c10;
  color: #ecedee;
  font-family: 'Nunito Sans', -apple-system, sans-serif;
  overflow: hidden;
  position: relative;
}

/* Background mesh */
.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 60% at 20% 15%, rgba(196, 77, 255, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 25%, rgba(68, 170, 255, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 70% 70% at 50% 85%, rgba(255, 68, 170, 0.06) 0%, transparent 70%);
  transition: background 0.5s ease;
}

/* Particle Canvas */
.particle-layer {
  position: fixed;
  inset: 0;
  z-index: 5;
  pointer-events: none;
}

/* Header */
.pop-header {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem 1rem;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.pop-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-left: 5.5rem; /* Space for .back-btn */
}

.brand-icon {
  font-size: 1.6rem;
  filter: drop-shadow(0 2px 8px rgba(255, 255, 255, 0.3));
}

.brand-title {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 30%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.pop-stats {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.stat-pill {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  padding: 0.35rem 0.85rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  backdrop-filter: blur(12px);
}

.stat-num {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
  transition: transform 0.15s ease;
}

.stat-num.bump {
  transform: scale(1.25);
  color: #4ade80;
}

.stat-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: 0.05em;
}

.pop-controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.theme-picker {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: rgba(255, 255, 255, 0.05);
  padding: 0.2rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.theme-btn {
  background: transparent;
  border: none;
  font-size: 1.1rem;
  padding: 0.3rem 0.55rem;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s ease;
  line-height: 1;
}

.theme-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: scale(1.1);
}

.theme-btn.active {
  background: rgba(255, 255, 255, 0.2);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transform: scale(1.1);
}

.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: #ecedee;
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  backdrop-filter: blur(12px);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.action-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

.action-btn:active {
  transform: translateY(1px);
}

.action-btn.icon-only {
  padding: 0.45rem 0.65rem;
  font-size: 0.95rem;
}

/* Viewport for the Sheet */
.sheet-viewport {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 1.5rem 3rem;
  overflow: hidden;
}

/* 3D Silicone Pop-it Tray Container */
.sheet-container {
  position: relative;
  max-width: 95vw;
  max-height: 78vh;
  padding: clamp(14px, 2.5vw, 24px);
  border-radius: clamp(24px, 4vw, 36px);
  background: #181920;
  border: 3px solid rgba(255, 255, 255, 0.08);
  box-shadow:
    0 30px 60px -12px rgba(0, 0, 0, 0.8),
    0 18px 36px -18px rgba(0, 0, 0, 0.7),
    inset 0 3px 6px rgba(255, 255, 255, 0.15),
    inset 0 -6px 16px rgba(0, 0, 0, 0.6);
  touch-action: none; /* Prevents scroll interference while gliding */
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.sheet-container.shake {
  animation: sheetShake 0.4s ease-in-out;
}

@keyframes sheetShake {
  0%, 100% { transform: scale(1) rotate(0deg); }
  25% { transform: scale(1.02) rotate(-1deg); }
  75% { transform: scale(1.02) rotate(1deg); }
}

/* Bubble Grid */
.bubble-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: clamp(10px, 1.8vw, 18px);
  touch-action: none;
}

/* Individual Bubble Cell */
.bubble {
  position: relative;
  width: clamp(48px, 9vw, 76px);
  height: clamp(48px, 9vw, 76px);
  border-radius: 50%;
  cursor: pointer;
  outline: none;
  transition: transform 0.12s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.15s ease;
  touch-action: none;
}

/* Unpopped 3D Dome */
.bubble:not(.popped) {
  background: var(--b-bg, radial-gradient(circle at 35% 30%, #ff6b9d 0%, #d81b60 65%, #880e4f 100%));
  box-shadow:
    0 8px 16px -2px rgba(0, 0, 0, 0.5),
    0 4px 6px -1px rgba(0, 0, 0, 0.4),
    inset 0 -5px 10px rgba(0, 0, 0, 0.4),
    inset 0 4px 8px rgba(255, 255, 255, 0.5);
  transform: translateY(-2px) scale(1);
}

/* Gloss specular reflection curve */
.bubble:not(.popped)::after {
  content: '';
  position: absolute;
  top: 14%;
  left: 20%;
  width: 40%;
  height: 24%;
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.85) 0%, rgba(255, 255, 255, 0.1) 70%, transparent 100%);
  transform: rotate(-30deg);
  pointer-events: none;
}

/* Active compression on press */
.bubble:not(.popped):active,
.bubble:not(.popped).pressing {
  transform: translateY(2px) scale(0.92);
  box-shadow:
    0 2px 6px rgba(0, 0, 0, 0.6),
    inset 0 2px 6px rgba(0, 0, 0, 0.5);
}

/* Popped / Deflated Crater State */
.bubble.popped {
  background: var(--b-bg-popped, radial-gradient(circle at 50% 50%, #4a0e28 0%, #200411 90%));
  box-shadow:
    inset 0 6px 14px rgba(0, 0, 0, 0.85),
    inset 0 2px 5px rgba(0, 0, 0, 0.9),
    inset 0 -2px 4px rgba(255, 255, 255, 0.1),
    0 1px 2px rgba(0, 0, 0, 0.5);
  transform: translateY(3px) scale(0.94);
  border: 1px solid rgba(0, 0, 0, 0.6);
}

.bubble.popped::after {
  display: none;
}

/* Pop snap wave animation */
.bubble.pop-anim {
  animation: bubblePopEffect 0.24s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes bubblePopEffect {
  0%   { transform: translateY(-2px) scale(1); }
  40%  { transform: translateY(1px) scale(0.85); }
  80%  { transform: translateY(4px) scale(1.08); }
  100% { transform: translateY(3px) scale(0.94); }
}

/* Ripple wave upon replenish */
.bubble.replenish-anim {
  animation: bubbleUnpopEffect 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes bubbleUnpopEffect {
  0%   { transform: translateY(3px) scale(0.8); opacity: 0.6; }
  60%  { transform: translateY(-4px) scale(1.15); opacity: 1; }
  100% { transform: translateY(-2px) scale(1); }
}

/* ── Theme Definitions ─────────────────────────────────────── */

/* 1. Rainbow Theme (Row by Row) */
body[data-theme="rainbow"] .sheet-container {
  background: #171821;
}
body[data-theme="rainbow"] .row-0 {
  --b-bg: radial-gradient(circle at 35% 30%, #ff5252 0%, #d50000 70%, #8a0000 100%);
  --b-bg-popped: radial-gradient(circle at 50% 50%, #420606 0%, #1e0202 100%);
}
body[data-theme="rainbow"] .row-1 {
  --b-bg: radial-gradient(circle at 35% 30%, #ff9100 0%, #ff6d00 70%, #993d00 100%);
  --b-bg-popped: radial-gradient(circle at 50% 50%, #401f02 0%, #1c0d01 100%);
}
body[data-theme="rainbow"] .row-2 {
  --b-bg: radial-gradient(circle at 35% 30%, #ffd600 0%, #ffab00 70%, #996000 100%);
  --b-bg-popped: radial-gradient(circle at 50% 50%, #423502 0%, #1f1901 100%);
}
body[data-theme="rainbow"] .row-3 {
  --b-bg: radial-gradient(circle at 35% 30%, #00e676 0%, #00c853 70%, #006020 100%);
  --b-bg-popped: radial-gradient(circle at 50% 50%, #033615 0%, #011709 100%);
}
body[data-theme="rainbow"] .row-4 {
  --b-bg: radial-gradient(circle at 35% 30%, #00b0ff 0%, #0091ea 70%, #004d80 100%);
  --b-bg-popped: radial-gradient(circle at 50% 50%, #02263b 0%, #01111a 100%);
}
body[data-theme="rainbow"] .row-5 {
  --b-bg: radial-gradient(circle at 35% 30%, #d500f9 0%, #aa00ff 70%, #570085 100%);
  --b-bg-popped: radial-gradient(circle at 50% 50%, #300247 0%, #160121 100%);
}
body[data-theme="rainbow"] .row-6 {
  --b-bg: radial-gradient(circle at 35% 30%, #ff4081 0%, #f50057 70%, #88002f 100%);
  --b-bg-popped: radial-gradient(circle at 50% 50%, #420218 0%, #1c010a 100%);
}
body[data-theme="rainbow"] .row-7 {
  --b-bg: radial-gradient(circle at 35% 30%, #7c4dff 0%, #651fff 70%, #310fb8 100%);
  --b-bg-popped: radial-gradient(circle at 50% 50%, #200a52 0%, #0d0424 100%);
}

/* 2. Classic Bubble Wrap Theme (Glass Clear) */
body[data-theme="bubblewrap"] .sheet-container {
  background: rgba(25, 30, 42, 0.85);
  border-color: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(20px);
}
body[data-theme="bubblewrap"] .bubble {
  --b-bg: radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.45) 0%, rgba(180, 220, 255, 0.25) 50%, rgba(100, 150, 200, 0.35) 100%);
  --b-bg-popped: radial-gradient(circle at 50% 50%, rgba(15, 20, 28, 0.8) 0%, rgba(8, 10, 15, 0.95) 100%);
}
body[data-theme="bubblewrap"] .bubble:not(.popped) {
  border: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow:
    0 6px 14px rgba(0, 0, 0, 0.35),
    inset 0 4px 8px rgba(255, 255, 255, 0.7),
    inset 0 -4px 8px rgba(0, 0, 0, 0.3);
}

/* 3. Neon Cyber Theme */
body[data-theme="neon"] .sheet-container {
  background: #0d0f14;
  border-color: #00ffcc55;
  box-shadow: 0 0 40px rgba(0, 255, 204, 0.15), 0 30px 60px rgba(0, 0, 0, 0.9);
}
body[data-theme="neon"] .bubble {
  --b-bg: radial-gradient(circle at 35% 30%, #00ffff 0%, #00b4d8 60%, #03045e 100%);
  --b-bg-popped: radial-gradient(circle at 50% 50%, #001220 0%, #00060d 100%);
}
body[data-theme="neon"] .bubble:not(.popped) {
  box-shadow:
    0 0 16px rgba(0, 255, 255, 0.45),
    0 8px 16px rgba(0, 0, 0, 0.6),
    inset 0 4px 8px rgba(255, 255, 255, 0.8);
}

/* 4. Dark Obsidian Theme */
body[data-theme="obsidian"] .sheet-container {
  background: #111215;
  border-color: rgba(255, 255, 255, 0.1);
}
body[data-theme="obsidian"] .bubble {
  --b-bg: radial-gradient(circle at 35% 30%, #434853 0%, #25282f 65%, #131417 100%);
  --b-bg-popped: radial-gradient(circle at 50% 50%, #0d0e10 0%, #050506 100%);
}
body[data-theme="obsidian"] .bubble:not(.popped) {
  box-shadow:
    0 8px 18px rgba(0, 0, 0, 0.7),
    inset 0 3px 6px rgba(255, 255, 255, 0.35),
    inset 0 -4px 8px rgba(0, 0, 0, 0.6);
}

/* Hint */
.swipe-hint {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  pointer-events: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.4);
  padding: 0.4rem 1.1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  backdrop-filter: blur(8px);
  animation: hintPulse 4s ease-in-out infinite;
}

@keyframes hintPulse {
  0%, 100% { opacity: 0.8; }
  50% { opacity: 0.3; }
}

/* Responsive */
@media (max-width: 680px) {
  .pop-header {
    padding: 1rem 1rem 0.5rem;
    gap: 0.75rem;
    justify-content: center;
  }
  .pop-brand {
    margin-left: 0;
    width: 100%;
    justify-content: center;
  }
  .sheet-viewport {
    padding: 0.5rem 0.75rem 2rem;
  }
  .bubble-grid {
    grid-template-columns: repeat(6, 1fr);
    gap: 8px;
  }
  .swipe-hint {
    bottom: 0.75rem;
    font-size: 0.7rem;
    padding: 0.3rem 0.8rem;
  }
}

@media (max-width: 400px) {
  .bubble-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
  }
}