/* ==========================================================================
   2048 NEON & NATURE EDITION - 8 ATMOSPHERIC THEMES & EXTENDED SYSTEM
   ========================================================================== */

:root {
  /* 🌌 1. Neon Cyberwave Theme (Default) */
  --bg-base: #090a16;
  --bg-gradient: radial-gradient(circle at 50% 15%, #161a38 0%, #080914 100%);
  --bg-glow-1: rgba(95, 75, 255, 0.28);
  --bg-glow-2: rgba(0, 212, 228, 0.18);
  --panel-bg: rgba(20, 23, 50, 0.78);
  --panel-border: rgba(95, 75, 255, 0.35);
  --board-bg: #0c0e1f;
  --grid-cell-bg: rgba(255, 255, 255, 0.05);
  --text-main: #f0f3ff;
  --text-muted: #8c95c8;
  --accent-primary: #5f4bff;
  --accent-glow: rgba(95, 75, 255, 0.55);
  --accent-cyan: #00d4e4;
  --accent-gold: #ffd700;
  --accent-magenta: #ff007f;
  
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --board-size: min(88vw, 480px);
  --grid-gap: clamp(8px, 2vw, 12px);
  --cell-size: calc((var(--board-size) - (var(--grid-gap) * 5)) / 4);
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

/* 🍃 2. MYSTIC FOREST (EMERALD) */
[data-theme="emerald"] {
  --bg-base: #020f0a;
  --bg-gradient: radial-gradient(circle at 50% 20%, #0a291f 0%, #020c08 100%);
  --bg-glow-1: rgba(32, 201, 151, 0.25);
  --bg-glow-2: rgba(255, 193, 7, 0.15);
  --panel-bg: rgba(10, 35, 26, 0.82);
  --panel-border: rgba(32, 201, 151, 0.35);
  --board-bg: #051811;
  --grid-cell-bg: rgba(255, 255, 255, 0.05);
  --text-main: #e8f9f3;
  --text-muted: #6fab97;
  --accent-primary: #20c997;
  --accent-glow: rgba(32, 201, 151, 0.55);
  --accent-cyan: #12caf0;
  --accent-gold: #ffc107;
  --accent-magenta: #50e3c2;
}

/* 🌆 3. CYBERPUNK SUNSET (RETROWAVE) */
[data-theme="cyber"] {
  --bg-base: #0f0213;
  --bg-gradient: linear-gradient(180deg, #20042b 0%, #3e0b3c 45%, #18031d 100%);
  --bg-glow-1: rgba(255, 0, 127, 0.32);
  --bg-glow-2: rgba(255, 140, 0, 0.25);
  --panel-bg: rgba(40, 10, 48, 0.85);
  --panel-border: rgba(255, 0, 127, 0.4);
  --board-bg: #15031b;
  --grid-cell-bg: rgba(255, 255, 255, 0.06);
  --text-main: #ffe6f5;
  --text-muted: #c875a7;
  --accent-primary: #ff007f;
  --accent-glow: rgba(255, 0, 127, 0.6);
  --accent-cyan: #00f0ff;
  --accent-gold: #ffb703;
  --accent-magenta: #ff0055;
}

/* ✨ 4. COSMIC GALAXY (DEEP SPACE) */
[data-theme="galaxy"] {
  --bg-base: #03020a;
  --bg-gradient: radial-gradient(circle at 50% 25%, #140d33 0%, #03020a 100%);
  --bg-glow-1: rgba(142, 68, 255, 0.28);
  --bg-glow-2: rgba(45, 125, 255, 0.2);
  --panel-bg: rgba(20, 15, 45, 0.82);
  --panel-border: rgba(142, 68, 255, 0.35);
  --board-bg: #090616;
  --grid-cell-bg: rgba(255, 255, 255, 0.05);
  --text-main: #f5f0ff;
  --text-muted: #9f96cb;
  --accent-primary: #8e44ff;
  --accent-glow: rgba(142, 68, 255, 0.55);
  --accent-cyan: #4cc9f0;
  --accent-gold: #ffd166;
  --accent-magenta: #b5179e;
}

/* 🌸 5. SAKURA TWILIGHT (REFINED SOFT DUSK BLOSSOM) */
[data-theme="sakura"] {
  --bg-base: #140b17;
  --bg-gradient: radial-gradient(circle at 50% 20%, #2a142e 0%, #100613 100%);
  --bg-glow-1: rgba(255, 105, 180, 0.22);
  --bg-glow-2: rgba(190, 75, 219, 0.18);
  --panel-bg: rgba(36, 16, 40, 0.84);
  --panel-border: rgba(255, 140, 180, 0.32);
  --board-bg: #18081c;
  --grid-cell-bg: rgba(255, 255, 255, 0.05);
  --text-main: #ffe8f2;
  --text-muted: #c48ba6;
  --accent-primary: #f43f5e;
  --accent-glow: rgba(244, 63, 94, 0.5);
  --accent-cyan: #ff70a6;
  --accent-gold: #ffd166;
  --accent-magenta: #ff4d8d;
}

/* 🌋 6. SOLAR EMBER (MAGMA FORGE) */
[data-theme="solar"] {
  --bg-base: #100503;
  --bg-gradient: radial-gradient(circle at 50% 20%, #2e0d06 0%, #0d0302 100%);
  --bg-glow-1: rgba(255, 78, 32, 0.3);
  --bg-glow-2: rgba(255, 180, 0, 0.2);
  --panel-bg: rgba(38, 12, 8, 0.85);
  --panel-border: rgba(255, 78, 32, 0.35);
  --board-bg: #180503;
  --grid-cell-bg: rgba(255, 255, 255, 0.05);
  --text-main: #fff0eb;
  --text-muted: #c98070;
  --accent-primary: #ff4e20;
  --accent-glow: rgba(255, 78, 32, 0.6);
  --accent-cyan: #ff9e00;
  --accent-gold: #ffd700;
  --accent-magenta: #ff2a00;
}

/* 🌊 7. OCEANIC ABYSS (DEEP MARINE) */
[data-theme="ocean"] {
  --bg-base: #020a14;
  --bg-gradient: radial-gradient(circle at 50% 20%, #061c33 0%, #01060d 100%);
  --bg-glow-1: rgba(0, 180, 216, 0.25);
  --bg-glow-2: rgba(0, 119, 182, 0.2);
  --panel-bg: rgba(8, 28, 48, 0.85);
  --panel-border: rgba(0, 180, 216, 0.35);
  --board-bg: #03101f;
  --grid-cell-bg: rgba(255, 255, 255, 0.05);
  --text-main: #e0f4ff;
  --text-muted: #74a2be;
  --accent-primary: #00b4d8;
  --accent-glow: rgba(0, 180, 216, 0.55);
  --accent-cyan: #48cae4;
  --accent-gold: #ffb703;
  --accent-magenta: #0077b6;
}

/* 💎 8. AMETHYST PRISM (CRYSTAL VOID) */
[data-theme="amethyst"] {
  --bg-base: #0b0416;
  --bg-gradient: radial-gradient(circle at 50% 20%, #200a38 0%, #07020d 100%);
  --bg-glow-1: rgba(181, 23, 158, 0.28);
  --bg-glow-2: rgba(114, 9, 183, 0.22);
  --panel-bg: rgba(30, 10, 48, 0.85);
  --panel-border: rgba(181, 23, 158, 0.38);
  --board-bg: #12041e;
  --grid-cell-bg: rgba(255, 255, 255, 0.05);
  --text-main: #fde8ff;
  --text-muted: #be8abf;
  --accent-primary: #b5179e;
  --accent-glow: rgba(181, 23, 158, 0.6);
  --accent-cyan: #7209b7;
  --accent-gold: #f72585;
  --accent-magenta: #4cc9f0;
}

/* Global Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

html, body {
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  font-family: var(--font-body);
  background-color: var(--bg-base);
  color: var(--text-main);
  transition: background 0.4s ease, color 0.4s ease;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
}

/* ==========================================================================
   DYNAMIC ATMOSPHERIC BACKGROUND SYSTEM
   ========================================================================== */

.ambient-bg-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
  background: var(--bg-gradient);
  transition: background 0.5s ease;
}

.ambient-glow {
  position: absolute;
  top: -20%;
  left: -10%;
  width: 120vw;
  height: 120vh;
  background: radial-gradient(circle at 50% 30%, var(--bg-glow-1) 0%, transparent 65%),
              radial-gradient(circle at 80% 70%, var(--bg-glow-2) 0%, transparent 60%);
  filter: blur(40px);
  animation: glowPulse 10s ease-in-out infinite alternate;
}

@keyframes glowPulse {
  0% { transform: scale(1) translate(0, 0); opacity: 0.8; }
  50% { transform: scale(1.08) translate(-2%, 2%); opacity: 1; }
  100% { transform: scale(0.96) translate(2%, -2%); opacity: 0.85; }
}

/* Synthwave 3D Perspective Grid */
.ambient-grid {
  position: absolute;
  bottom: 0;
  left: -50%;
  width: 200%;
  height: 50vh;
  background-image: 
    linear-gradient(to right, rgba(95, 75, 255, 0.25) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 212, 228, 0.25) 1px, transparent 1px);
  background-size: 50px 50px;
  transform: perspective(300px) rotateX(65deg);
  transform-origin: bottom center;
  mask-image: linear-gradient(to top, rgba(0,0,0,1) 10%, rgba(0,0,0,0) 90%);
  -webkit-mask-image: linear-gradient(to top, rgba(0,0,0,1) 10%, rgba(0,0,0,0) 90%);
  display: none;
  animation: gridScroll 1.8s linear infinite;
}

[data-theme="neon"] .ambient-grid {
  display: block;
}

@keyframes gridScroll {
  0% { background-position: 0 0; }
  100% { background-position: 0 50px; }
}

/* Retrowave Sun */
.ambient-sun {
  position: absolute;
  top: 15%;
  left: 50%;
  transform: translateX(-50%);
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: linear-gradient(180deg, #ffea00 0%, #ff007f 80%, #7b00ff 100%);
  box-shadow: 0 0 70px rgba(255, 0, 127, 0.6);
  opacity: 0.28;
  display: none;
  mask-image: linear-gradient(to bottom, 
    black 0%, black 50%, 
    transparent 50%, transparent 54%, 
    black 54%, black 65%, 
    transparent 65%, transparent 70%, 
    black 70%, black 82%, 
    transparent 82%, transparent 88%, 
    black 88%, black 100%
  );
  -webkit-mask-image: linear-gradient(to bottom, 
    black 0%, black 50%, 
    transparent 50%, transparent 54%, 
    black 54%, black 65%, 
    transparent 65%, transparent 70%, 
    black 70%, black 82%, 
    transparent 82%, transparent 88%, 
    black 88%, black 100%
  );
}

[data-theme="cyber"] .ambient-sun {
  display: block;
  animation: sunFloat 6s ease-in-out infinite alternate;
}

[data-theme="cyber"] .ambient-grid {
  display: block;
  background-image: 
    linear-gradient(to right, rgba(255, 0, 127, 0.3) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 140, 0, 0.3) 1px, transparent 1px);
}

@keyframes sunFloat {
  0% { transform: translateX(-50%) translateY(0); }
  100% { transform: translateX(-50%) translateY(-10px); }
}

/* Scanlines */
.ambient-scanlines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.12) 0px, rgba(0, 0, 0, 0.12) 1px, transparent 1px, transparent 3px);
  pointer-events: none;
  opacity: 0.6;
  display: none;
}

[data-theme="cyber"] .ambient-scanlines,
[data-theme="neon"] .ambient-scanlines {
  display: block;
}

.ambient-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* ==========================================================================
   ACHIEVEMENT UNLOCK TOAST
   ========================================================================== */

.achievement-toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  background: rgba(18, 20, 48, 0.95);
  border: 2px solid var(--accent-gold);
  border-radius: var(--radius-lg);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6), 0 0 25px rgba(255, 215, 0, 0.4);
  backdrop-filter: blur(12px);
  animation: toastSlideDown 3.2s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
  pointer-events: none;
}

@keyframes toastSlideDown {
  0% { opacity: 0; transform: translateX(-50%) translateY(-50px) scale(0.9); }
  12% { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
  85% { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
  100% { opacity: 0; transform: translateX(-50%) translateY(-30px) scale(0.9); }
}

.achievement-toast-icon {
  font-size: 28px;
  filter: drop-shadow(0 0 10px rgba(255, 215, 0, 0.8));
}

.achievement-toast-label {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1.5px;
  color: var(--accent-gold);
}

.achievement-toast-title {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 800;
  color: #ffffff;
}

/* Milestone Banner Toast */
.milestone-toast {
  position: fixed;
  top: 75px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 290;
  background: rgba(15, 18, 42, 0.92);
  border: 2px solid var(--accent-cyan);
  border-radius: var(--radius-lg);
  padding: 10px 22px;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.5px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 25px rgba(0, 212, 228, 0.4);
  backdrop-filter: blur(12px);
  pointer-events: none;
  animation: milestonePop 2s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes milestonePop {
  0% { opacity: 0; transform: translateX(-50%) translateY(-20px) scale(0.85); }
  15% { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
  80% { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
  100% { opacity: 0; transform: translateX(-50%) translateY(-15px) scale(0.9); }
}

/* ==========================================================================
   WRAPPER & HEADER LAYOUT
   ========================================================================== */

.game-wrapper {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 520px;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin: auto;
}

.header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.brand .title {
  font-family: var(--font-heading);
  font-size: clamp(34px, 7vw, 44px);
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--text-main) 0%, var(--accent-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -1px;
}

.brand .subtitle {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 2.5px;
  color: var(--accent-cyan);
  display: block;
  margin-top: 3px;
  transition: color 0.3s ease;
}

.badge-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
}

.mode-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1.5px;
  padding: 3px 8px;
  border-radius: 20px;
  background: var(--accent-primary);
  color: #ffffff;
  box-shadow: 0 2px 8px var(--accent-glow);
}

.streak-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 1px;
  padding: 3px 9px;
  border-radius: 20px;
  background: linear-gradient(135deg, #ff4e20, #ffd700);
  color: #111;
  box-shadow: 0 0 14px rgba(255, 78, 32, 0.7);
  animation: streakPulse 0.8s ease-in-out infinite alternate;
}

@keyframes streakPulse {
  0% { transform: scale(1); box-shadow: 0 0 8px rgba(255, 78, 32, 0.5); }
  100% { transform: scale(1.08); box-shadow: 0 0 18px rgba(255, 215, 0, 0.9); }
}

.scores-container {
  display: flex;
  gap: 8px;
}

.score-box {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-md);
  padding: 8px 14px;
  min-width: 72px;
  text-align: center;
  position: relative;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.score-label {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  display: block;
}

.score-value {
  font-family: var(--font-heading);
  font-size: clamp(17px, 3.5vw, 21px);
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
}

.timer-value {
  color: var(--accent-cyan);
}

.floating-scores {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.floating-score {
  position: absolute;
  left: 50%;
  top: -8px;
  transform: translateX(-50%);
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 800;
  color: var(--accent-gold);
  text-shadow: 0 0 10px rgba(255, 215, 0, 0.8);
  animation: floatUp 0.8s ease-out forwards;
  white-space: nowrap;
}

@keyframes floatUp {
  0% { opacity: 1; transform: translate(-50%, 0) scale(0.8); }
  50% { opacity: 1; transform: translate(-50%, -24px) scale(1.2); }
  100% { opacity: 0; transform: translate(-50%, -44px) scale(1); }
}

/* ==========================================================================
   PROCEDURAL RADIO TUNER BAR
   ========================================================================== */

.radio-bar {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-size: 12px;
  backdrop-filter: blur(8px);
}

.radio-status {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  color: var(--text-main);
  font-weight: 700;
}

.radio-status:hover {
  color: var(--accent-cyan);
}

.radio-equalizer {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 12px;
  width: 12px;
}

.radio-equalizer span {
  width: 3px;
  background: var(--accent-cyan);
  border-radius: 1px;
  height: 4px;
  transition: height 0.2s;
}

.radio-playing .radio-equalizer span:nth-child(1) { animation: eqBar 0.5s ease infinite alternate; }
.radio-playing .radio-equalizer span:nth-child(2) { animation: eqBar 0.7s ease infinite alternate 0.2s; }
.radio-playing .radio-equalizer span:nth-child(3) { animation: eqBar 0.6s ease infinite alternate 0.4s; }

@keyframes eqBar {
  0% { height: 3px; }
  100% { height: 12px; }
}

.radio-station-btn {
  padding: 4px 10px !important;
  font-size: 11px !important;
  border-radius: 12px !important;
}

/* Toolbar */
.toolbar {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.toolbar-group {
  display: flex;
  gap: 8px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
  outline: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary) 0%, #3a22c4 100%);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-secondary {
  background: var(--panel-bg);
  color: var(--text-main);
  border-color: var(--panel-border);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-cyan);
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none !important;
}

.btn-icon {
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: var(--radius-sm);
  background: var(--panel-bg);
  color: var(--text-main);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(8px);
}

.btn-icon:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
  box-shadow: 0 0 14px var(--accent-glow);
}

/* Polished Trophy Button */
.btn-trophy-glow {
  border-color: rgba(255, 215, 0, 0.4) !important;
  background: rgba(255, 215, 0, 0.08) !important;
}

.btn-trophy-glow:hover {
  border-color: var(--accent-gold) !important;
  box-shadow: 0 0 16px rgba(255, 215, 0, 0.5) !important;
}

.btn-large {
  padding: 12px 24px;
  font-size: 15px;
}

/* ==========================================================================
   NON-OBSTRUCTIVE FLOATING COMBO HUD PILL
   ========================================================================== */

.combo-hud-container {
  width: 100%;
  height: 30px;
  display: flex;
  justify-content: center;
  align-items: center;
  pointer-events: none;
}

.combo-hud-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 16px;
  border-radius: 20px;
  background: rgba(16, 18, 44, 0.95);
  border: 1.5px solid var(--accent-cyan);
  box-shadow: 0 4px 18px rgba(0, 212, 228, 0.4);
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 800;
  animation: comboPillPunch 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.combo-tier-double {
  border-color: var(--accent-cyan);
  color: #ffffff;
}

.combo-tier-triple {
  border-color: #ff9e00;
  background: rgba(45, 12, 12, 0.95);
  box-shadow: 0 4px 20px rgba(255, 158, 0, 0.5);
  color: #ffd700;
}

.combo-tier-ultra {
  border-color: #ff007f;
  background: rgba(36, 6, 38, 0.95);
  box-shadow: 0 4px 24px rgba(255, 0, 127, 0.6);
  color: #ffffff;
}

.combo-pill-bonus {
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.15);
}

@keyframes comboPillPunch {
  0% { opacity: 0; transform: scale(0.6) translateY(-8px); }
  25% { opacity: 1; transform: scale(1.1) translateY(0); }
  80% { opacity: 1; transform: scale(1) translateY(0); }
  100% { opacity: 0; transform: scale(0.9) translateY(-4px); }
}

/* ==========================================================================
   BOARD & TILES
   ========================================================================== */

.board-container {
  position: relative;
  width: var(--board-size);
  height: var(--board-size);
  background: var(--board-bg);
  border-radius: var(--radius-lg);
  padding: var(--grid-gap);
  border: 2px solid var(--panel-border);
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.5), 0 0 35px var(--accent-glow);
  transition: border-color 0.4s, box-shadow 0.4s, background 0.4s;
  touch-action: none;
}

.board-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: var(--grid-gap);
  width: 100%;
  height: 100%;
}

.grid-cell {
  background: var(--grid-cell-bg);
  border-radius: var(--radius-md);
  width: 100%;
  height: 100%;
  transition: background 0.3s;
}

/* Tile Layer */
.tile-container {
  position: absolute;
  top: var(--grid-gap);
  left: var(--grid-gap);
  right: var(--grid-gap);
  bottom: var(--grid-gap);
  pointer-events: none;
}

.tile {
  position: absolute;
  width: var(--cell-size);
  height: var(--cell-size);
  transition: transform 0.14s cubic-bezier(0.25, 1, 0.5, 1);
  will-change: transform;
  pointer-events: none;
}

.tile-inner {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-md);
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(22px, 5vw, 34px);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
  transition: transform 0.15s ease;
}

.tile-new .tile-inner {
  animation: tileSpawn 0.18s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.tile-merged {
  z-index: 10;
}

.tile-merged .tile-inner {
  animation: tilePop 0.22s cubic-bezier(0.175, 0.885, 0.32, 1.35) forwards;
}

@keyframes tileSpawn {
  0% { opacity: 0; transform: scale(0.2); }
  100% { opacity: 1; transform: scale(1); }
}

@keyframes tilePop {
  0% { transform: scale(1); }
  50% { transform: scale(1.24); filter: brightness(1.25); }
  100% { transform: scale(1); filter: brightness(1); }
}

/* 1. Neon Theme Tiles (Default) */
.tile-2 .tile-inner    { background: linear-gradient(135deg, #3f47c9, #2b329c); box-shadow: 0 0 12px rgba(63, 71, 201, 0.45); }
.tile-4 .tile-inner    { background: linear-gradient(135deg, #6432e1, #481fb5); box-shadow: 0 0 14px rgba(100, 50, 225, 0.5); }
.tile-8 .tile-inner    { background: linear-gradient(135deg, #9e20f8, #720cb8); box-shadow: 0 0 16px rgba(158, 32, 248, 0.55); }
.tile-16 .tile-inner   { background: linear-gradient(135deg, #dc16dc, #9c0c9c); box-shadow: 0 0 18px rgba(220, 22, 220, 0.6); }
.tile-32 .tile-inner   { background: linear-gradient(135deg, #f52a6c, #b81448); box-shadow: 0 0 20px rgba(245, 42, 108, 0.65); }
.tile-64 .tile-inner   { background: linear-gradient(135deg, #ff4e20, #bd300a); box-shadow: 0 0 22px rgba(255, 78, 32, 0.7); }
.tile-128 .tile-inner  { background: linear-gradient(135deg, #ff9e00, #c47600); font-size: clamp(20px, 4.5vw, 29px); box-shadow: 0 0 24px rgba(255, 158, 0, 0.75); }
.tile-256 .tile-inner  { background: linear-gradient(135deg, #dade00, #9ca000); font-size: clamp(20px, 4.5vw, 29px); box-shadow: 0 0 26px rgba(218, 222, 0, 0.8); }
.tile-512 .tile-inner  { background: linear-gradient(135deg, #30da4e, #1a9e34); font-size: clamp(20px, 4.5vw, 29px); box-shadow: 0 0 28px rgba(48, 218, 78, 0.85); }
.tile-1024 .tile-inner { background: linear-gradient(135deg, #00d4e4, #008fa0); font-size: clamp(16px, 3.8vw, 23px); box-shadow: 0 0 30px rgba(0, 212, 228, 0.9); }
.tile-2048 .tile-inner { background: linear-gradient(135deg, #fff858, #ffd700, #ff9e00); font-size: clamp(16px, 3.8vw, 23px); color: #111; box-shadow: 0 0 38px rgba(255, 248, 88, 1); border: 2px solid #ffffff; }
.tile-super .tile-inner{ background: linear-gradient(135deg, #ffffff, #ffd700, #ff007f); font-size: clamp(14px, 3.5vw, 21px); color: #111; box-shadow: 0 0 45px rgba(255, 255, 255, 1); border: 2px solid #ffffff; }

/* 🍃 2. Emerald Nature Tiles */
[data-theme="emerald"] .tile-2 .tile-inner    { background: linear-gradient(135deg, #1b4d3e, #0e3026); }
[data-theme="emerald"] .tile-4 .tile-inner    { background: linear-gradient(135deg, #207357, #134e3b); }
[data-theme="emerald"] .tile-8 .tile-inner    { background: linear-gradient(135deg, #20a379, #127555); }
[data-theme="emerald"] .tile-16 .tile-inner   { background: linear-gradient(135deg, #20c997, #0e9970); }
[data-theme="emerald"] .tile-32 .tile-inner   { background: linear-gradient(135deg, #12caf0, #0a8fa8); }
[data-theme="emerald"] .tile-64 .tile-inner   { background: linear-gradient(135deg, #0d6efd, #094bb0); }
[data-theme="emerald"] .tile-128 .tile-inner  { background: linear-gradient(135deg, #84cc16, #589108); }
[data-theme="emerald"] .tile-256 .tile-inner  { background: linear-gradient(135deg, #eab308, #a87f03); }
[data-theme="emerald"] .tile-512 .tile-inner  { background: linear-gradient(135deg, #f97316, #be5205); }
[data-theme="emerald"] .tile-1024 .tile-inner { background: linear-gradient(135deg, #10b981, #047857); }
[data-theme="emerald"] .tile-2048 .tile-inner { background: linear-gradient(135deg, #6ee7b7, #fbbf24, #f59e0b); color: #022c22; }

/* 🌆 3. Cyber Sunset Tiles */
[data-theme="cyber"] .tile-2 .tile-inner    { background: linear-gradient(135deg, #581c87, #3b0764); }
[data-theme="cyber"] .tile-4 .tile-inner    { background: linear-gradient(135deg, #86198f, #5b0d62); }
[data-theme="cyber"] .tile-8 .tile-inner    { background: linear-gradient(135deg, #be185d, #831843); }
[data-theme="cyber"] .tile-16 .tile-inner   { background: linear-gradient(135deg, #e11d48, #9f1239); }
[data-theme="cyber"] .tile-32 .tile-inner   { background: linear-gradient(135deg, #ff007f, #b30059); }
[data-theme="cyber"] .tile-64 .tile-inner   { background: linear-gradient(135deg, #ea580c, #9a3412); }
[data-theme="cyber"] .tile-128 .tile-inner  { background: linear-gradient(135deg, #d97706, #92400e); }
[data-theme="cyber"] .tile-256 .tile-inner  { background: linear-gradient(135deg, #0284c7, #0369a1); }
[data-theme="cyber"] .tile-512 .tile-inner  { background: linear-gradient(135deg, #06b6d4, #0891b2); }
[data-theme="cyber"] .tile-1024 .tile-inner { background: linear-gradient(135deg, #00f0ff, #00a6b2); color: #111; }
[data-theme="cyber"] .tile-2048 .tile-inner { background: linear-gradient(135deg, #ffea00, #ff007f, #7b00ff); color: #111; }

/* ✨ 4. Cosmic Galaxy Tiles */
[data-theme="galaxy"] .tile-2 .tile-inner    { background: linear-gradient(135deg, #312e81, #1e1b4b); }
[data-theme="galaxy"] .tile-4 .tile-inner    { background: linear-gradient(135deg, #4338ca, #2e268f); }
[data-theme="galaxy"] .tile-8 .tile-inner    { background: linear-gradient(135deg, #6d28d9, #4c1d95); }
[data-theme="galaxy"] .tile-16 .tile-inner   { background: linear-gradient(135deg, #8b5cf6, #5b21b6); }
[data-theme="galaxy"] .tile-32 .tile-inner   { background: linear-gradient(135deg, #a855f7, #7e22ce); }
[data-theme="galaxy"] .tile-64 .tile-inner   { background: linear-gradient(135deg, #d946ef, #a21caf); }
[data-theme="galaxy"] .tile-128 .tile-inner  { background: linear-gradient(135deg, #ec4899, #be185d); }
[data-theme="galaxy"] .tile-256 .tile-inner  { background: linear-gradient(135deg, #0ea5e9, #0369a1); }
[data-theme="galaxy"] .tile-512 .tile-inner  { background: linear-gradient(135deg, #06b6d4, #0e7490); }
[data-theme="galaxy"] .tile-1024 .tile-inner { background: linear-gradient(135deg, #38bdf8, #6366f1); }
[data-theme="galaxy"] .tile-2048 .tile-inner { background: linear-gradient(135deg, #f0abfc, #818cf8, #38bdf8); color: #0f051d; }

/* 🌸 5. Sakura Twilight Tiles (Soft Mauve/Rose Dusk) */
[data-theme="sakura"] .tile-2 .tile-inner    { background: linear-gradient(135deg, #4a2840, #2f1427); color: #ffe4f0; }
[data-theme="sakura"] .tile-4 .tile-inner    { background: linear-gradient(135deg, #7c3a63, #541d40); color: #ffe4f0; }
[data-theme="sakura"] .tile-8 .tile-inner    { background: linear-gradient(135deg, #a84777, #7a2550); color: #ffffff; }
[data-theme="sakura"] .tile-16 .tile-inner   { background: linear-gradient(135deg, #d9467d, #a32252); color: #ffffff; }
[data-theme="sakura"] .tile-32 .tile-inner   { background: linear-gradient(135deg, #f43f5e, #be123c); color: #ffffff; }
[data-theme="sakura"] .tile-64 .tile-inner   { background: linear-gradient(135deg, #e11d48, #9f1239); color: #ffffff; }
[data-theme="sakura"] .tile-128 .tile-inner  { background: linear-gradient(135deg, #db2777, #9d174d); color: #ffffff; }
[data-theme="sakura"] .tile-256 .tile-inner  { background: linear-gradient(135deg, #c026d3, #86198f); color: #ffffff; }
[data-theme="sakura"] .tile-512 .tile-inner  { background: linear-gradient(135deg, #9333ea, #6b21a8); color: #ffffff; }
[data-theme="sakura"] .tile-1024 .tile-inner { background: linear-gradient(135deg, #f472b6, #ec4899); color: #ffffff; }
[data-theme="sakura"] .tile-2048 .tile-inner { background: linear-gradient(135deg, #fda4af, #f43f5e, #fb7185); color: #4c0519; }

/* 🌋 6. Solar Ember Tiles (Magma & Molten Gold) */
[data-theme="solar"] .tile-2 .tile-inner    { background: linear-gradient(135deg, #451a03, #290e02); }
[data-theme="solar"] .tile-4 .tile-inner    { background: linear-gradient(135deg, #7c2d12, #431407); }
[data-theme="solar"] .tile-8 .tile-inner    { background: linear-gradient(135deg, #9a3412, #651a04); }
[data-theme="solar"] .tile-16 .tile-inner   { background: linear-gradient(135deg, #c2410c, #7c2d12); }
[data-theme="solar"] .tile-32 .tile-inner   { background: linear-gradient(135deg, #ea580c, #9a3412); }
[data-theme="solar"] .tile-64 .tile-inner   { background: linear-gradient(135deg, #f97316, #c2410c); }
[data-theme="solar"] .tile-128 .tile-inner  { background: linear-gradient(135deg, #fb923c, #ea580c); }
[data-theme="solar"] .tile-256 .tile-inner  { background: linear-gradient(135deg, #eab308, #ca8a04); }
[data-theme="solar"] .tile-512 .tile-inner  { background: linear-gradient(135deg, #facc15, #eab308); }
[data-theme="solar"] .tile-1024 .tile-inner { background: linear-gradient(135deg, #ff4e20, #ffd700); }
[data-theme="solar"] .tile-2048 .tile-inner { background: linear-gradient(135deg, #fffbeb, #fde047, #f97316); color: #431407; }

/* 🌊 7. Oceanic Abyss Tiles (Marine & Aqua) */
[data-theme="ocean"] .tile-2 .tile-inner    { background: linear-gradient(135deg, #082f49, #041b2c); }
[data-theme="ocean"] .tile-4 .tile-inner    { background: linear-gradient(135deg, #075985, #033a57); }
[data-theme="ocean"] .tile-8 .tile-inner    { background: linear-gradient(135deg, #0369a1, #024a73); }
[data-theme="ocean"] .tile-16 .tile-inner   { background: linear-gradient(135deg, #0284c7, #035b8a); }
[data-theme="ocean"] .tile-32 .tile-inner   { background: linear-gradient(135deg, #0ea5e9, #0274ad); }
[data-theme="ocean"] .tile-64 .tile-inner   { background: linear-gradient(135deg, #38bdf8, #0284c7); }
[data-theme="ocean"] .tile-128 .tile-inner  { background: linear-gradient(135deg, #06b6d4, #0891b2); }
[data-theme="ocean"] .tile-256 .tile-inner  { background: linear-gradient(135deg, #14b8a6, #0f766e); }
[data-theme="ocean"] .tile-512 .tile-inner  { background: linear-gradient(135deg, #10b981, #047857); }
[data-theme="ocean"] .tile-1024 .tile-inner { background: linear-gradient(135deg, #00b4d8, #0077b6); }
[data-theme="ocean"] .tile-2048 .tile-inner { background: linear-gradient(135deg, #e0f2fe, #38bdf8, #0284c7); color: #082f49; }

/* 💎 8. Amethyst Prism Tiles (Violet & Gemstone) */
[data-theme="amethyst"] .tile-2 .tile-inner    { background: linear-gradient(135deg, #3b0764, #21033b); }
[data-theme="amethyst"] .tile-4 .tile-inner    { background: linear-gradient(135deg, #581c87, #370a59); }
[data-theme="amethyst"] .tile-8 .tile-inner    { background: linear-gradient(135deg, #6b21a8, #471173); }
[data-theme="amethyst"] .tile-16 .tile-inner   { background: linear-gradient(135deg, #7e22ce, #571291); }
[data-theme="amethyst"] .tile-32 .tile-inner   { background: linear-gradient(135deg, #9333ea, #6b21a8); }
[data-theme="amethyst"] .tile-64 .tile-inner   { background: linear-gradient(135deg, #a855f7, #7e22ce); }
[data-theme="amethyst"] .tile-128 .tile-inner  { background: linear-gradient(135deg, #c084fc, #9333ea); }
[data-theme="amethyst"] .tile-256 .tile-inner  { background: linear-gradient(135deg, #d946ef, #a21caf); }
[data-theme="amethyst"] .tile-512 .tile-inner  { background: linear-gradient(135deg, #e879f9, #c026d3); }
[data-theme="amethyst"] .tile-1024 .tile-inner { background: linear-gradient(135deg, #f43f5e, #b5179e); }
[data-theme="amethyst"] .tile-2048 .tile-inner { background: linear-gradient(135deg, #fae8ff, #d946ef, #7e22ce); color: #2e0854; }

.particle-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 20;
}

/* Board Micro-Shake */
.board-shake {
  animation: boardMicroShake 0.22s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

@keyframes boardMicroShake {
  10%, 90% { transform: translate3d(-2px, 1px, 0); }
  30%, 70% { transform: translate3d(3px, -1px, 0); }
  50% { transform: translate3d(-3px, 2px, 0); }
}

.board-flash {
  animation: boardFlash 0.3s ease-out;
}

@keyframes boardFlash {
  0% { box-shadow: 0 16px 50px rgba(0, 0, 0, 0.5), 0 0 50px var(--accent-cyan); }
  100% { box-shadow: 0 16px 50px rgba(0, 0, 0, 0.5), 0 0 35px var(--accent-glow); }
}

/* ==========================================================================
   HOME SCREEN
   ========================================================================== */

.screen-home {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 520px;
  padding: 16px;
  margin: auto;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.home-top-bar {
  width: 100%;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-bottom: 8px;
}

.home-header-btn {
  width: auto !important;
  padding: 7px 14px !important;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  border-radius: 20px;
}

.btn-icon-emoji {
  font-size: 15px;
}

.home-content {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  animation: fadeIn 0.4s ease;
}

.home-brand {
  text-align: center;
}

.home-brand .title {
  font-family: var(--font-heading);
  font-size: clamp(54px, 13vw, 76px);
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--text-main) 0%, var(--accent-gold) 50%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -2px;
}

.home-brand .subtitle {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 3px;
  color: var(--accent-cyan);
  display: block;
  margin-top: 6px;
}

.home-tagline {
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.5;
  max-width: 320px;
}

.mode-cards {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mode-card {
  width: 100%;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
  color: var(--text-main);
  font-family: var(--font-body);
  backdrop-filter: blur(10px);
}

.mode-card:not(.mode-card-timed):hover {
  transform: translateY(-3px);
  border-color: var(--accent-cyan);
  box-shadow: 0 12px 40px var(--accent-glow);
}

.mode-card-timed {
  cursor: default;
}

.mode-icon {
  display: block;
  font-size: 28px;
  margin-bottom: 4px;
}

.mode-name {
  display: block;
  font-family: var(--font-heading);
  font-size: 19px;
  font-weight: 800;
  margin-bottom: 3px;
}

.mode-desc {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
}

.timed-options {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin: 10px 0 10px;
}

.timed-btn {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.timed-btn:hover {
  border-color: var(--accent-cyan);
  color: var(--text-main);
}

.timed-btn.active {
  background: linear-gradient(135deg, var(--accent-primary), #3e28cc);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 14px var(--accent-glow);
}

.continue-banner {
  width: 100%;
}

.continue-btn {
  width: 100%;
  padding: 14px 20px;
  font-size: 14px;
  background: linear-gradient(135deg, #00d4e4, #5f4bff);
  box-shadow: 0 6px 22px rgba(0, 212, 228, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.home-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  width: 100%;
}

@media (max-width: 420px) {
  .home-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

.home-stat {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-md);
  padding: 8px;
  text-align: center;
  backdrop-filter: blur(8px);
}

.home-stat-label {
  display: block;
  font-size: 9px;
  font-weight: 800;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.home-stat-value {
  display: block;
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 800;
  color: var(--text-main);
  margin-top: 2px;
}

/* ==========================================================================
   TROPHY SHOWCASE MODAL
   ========================================================================== */

.modal-trophies {
  max-width: 540px !important;
}

.modal-title-with-badge {
  display: flex;
  align-items: center;
  gap: 10px;
}

.trophy-unlocked-badge {
  font-size: 11px;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 12px;
  background: rgba(255, 215, 0, 0.15);
  color: var(--accent-gold);
  border: 1px solid rgba(255, 215, 0, 0.3);
}

.trophies-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  max-height: 55vh;
  overflow-y: auto;
  padding-right: 4px;
}

@media (max-width: 440px) {
  .trophies-grid {
    grid-template-columns: 1fr;
  }
}

.trophy-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--panel-border);
  transition: all 0.2s ease;
}

.trophy-card.unlocked {
  background: rgba(255, 215, 0, 0.08);
  border-color: rgba(255, 215, 0, 0.4);
}

.trophy-card.locked {
  opacity: 0.55;
  filter: grayscale(0.8);
}

.trophy-icon {
  font-size: 22px;
  flex-shrink: 0;
}

.trophy-info {
  flex: 1;
  min-width: 0;
}

.trophy-name {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 800;
  color: var(--text-main);
}

.trophy-desc {
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 1px;
  line-height: 1.25;
}

.trophy-status-pill {
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--accent-gold);
  margin-top: 3px;
  display: inline-block;
}

/* ==========================================================================
   RADIO STATIONS MODAL
   ========================================================================== */

.modal-radio-picker {
  max-width: 460px !important;
}

.radio-stations-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.station-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1.5px solid var(--panel-border);
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
  width: 100%;
}

.station-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent-cyan);
}

.station-card.active {
  border-color: var(--accent-cyan);
  background: rgba(0, 212, 228, 0.12);
}

.station-icon {
  font-size: 24px;
}

.station-info {
  flex: 1;
}

.station-name {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 800;
}

.station-desc {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.station-play-state {
  font-size: 11px;
  font-weight: 800;
  color: var(--accent-cyan);
  opacity: 0;
}

.station-card.active .station-play-state {
  opacity: 1;
}

/* ==========================================================================
   SHARE CARD MODAL & PREVIEW CANVAS
   ========================================================================== */

.modal-share-card {
  max-width: 480px !important;
}

.share-card-modal-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px !important;
}

.share-card-canvas-wrapper {
  width: 100%;
  max-width: 380px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  border: 1px solid var(--panel-border);
}

#share-card-canvas {
  width: 100%;
  height: auto;
  display: block;
}

.share-modal-footer {
  display: flex;
  gap: 10px;
  justify-content: center;
}

/* ==========================================================================
   THEME PICKER MODAL (8 THEMES)
   ========================================================================== */

.modal-theme-picker {
  max-width: 500px !important;
}

.theme-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 55vh;
  overflow-y: auto;
  padding-right: 4px;
}

.theme-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1.5px solid var(--panel-border);
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
  width: 100%;
}

.theme-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent-cyan);
  transform: translateY(-1px);
}

.theme-card.active {
  border-color: var(--accent-cyan);
  background: rgba(0, 212, 228, 0.12);
  box-shadow: 0 0 16px var(--accent-glow);
}

.theme-card-preview {
  display: flex;
  gap: 4px;
  padding: 5px;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.preview-tile {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 10px;
  font-weight: 800;
  color: #fff;
}

.theme-prev-neon .prev-t1 { background: #3f47c9; }
.theme-prev-neon .prev-t2 { background: #ff4e20; }
.theme-prev-neon .prev-t3 { background: #ffd700; color: #111; }

.theme-prev-emerald .prev-t1 { background: #1b4d3e; }
.theme-prev-emerald .prev-t2 { background: #20c997; }
.theme-prev-emerald .prev-t3 { background: #6ee7b7; color: #022c22; }

.theme-prev-cyber .prev-t1 { background: #581c87; }
.theme-prev-cyber .prev-t2 { background: #ff007f; }
.theme-prev-cyber .prev-t3 { background: #ffea00; color: #111; }

.theme-prev-galaxy .prev-t1 { background: #312e81; }
.theme-prev-galaxy .prev-t2 { background: #a855f7; }
.theme-prev-galaxy .prev-t3 { background: #38bdf8; color: #0f051d; }

.theme-prev-sakura .prev-t1 { background: #7c3a63; }
.theme-prev-sakura .prev-t2 { background: #f43f5e; }
.theme-prev-sakura .prev-t3 { background: #fda4af; color: #4c0519; }

.theme-prev-solar .prev-t1 { background: #451a03; }
.theme-prev-solar .prev-t2 { background: #ea580c; }
.theme-prev-solar .prev-t3 { background: #ffd700; color: #111; }

.theme-prev-ocean .prev-t1 { background: #082f49; }
.theme-prev-ocean .prev-t2 { background: #0284c7; }
.theme-prev-ocean .prev-t3 { background: #38bdf8; color: #082f49; }

.theme-prev-amethyst .prev-t1 { background: #3b0764; }
.theme-prev-amethyst .prev-t2 { background: #9333ea; }
.theme-prev-amethyst .prev-t3 { background: #fae8ff; color: #2e0854; }

.theme-card-info {
  flex: 1;
}

.theme-card-title {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 800;
  color: var(--text-main);
}

.theme-card-desc {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 1px;
}

.theme-check {
  font-size: 15px;
  font-weight: 900;
  color: var(--accent-cyan);
  opacity: 0;
  transition: opacity 0.2s;
}

.theme-card.active .theme-check {
  opacity: 1;
}

/* ==========================================================================
   OVERLAYS & MODALS
   ========================================================================== */

.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(8, 9, 20, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 30;
  animation: fadeIn 0.3s ease forwards;
}

.overlay-content {
  text-align: center;
  padding: 20px;
}

.overlay-content h2 {
  font-family: var(--font-heading);
  font-size: 34px;
  font-weight: 900;
  margin-bottom: 8px;
}

.glow-text {
  color: var(--accent-gold);
  text-shadow: 0 0 20px rgba(255, 215, 0, 0.85);
}

.glow-text-cyan {
  color: var(--accent-cyan);
  text-shadow: 0 0 20px rgba(0, 212, 228, 0.85);
}

.overlay-content p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 18px;
}

.overlay-score {
  font-size: 15px;
  color: var(--text-main);
  margin-bottom: 20px !important;
}

.overlay-score strong {
  color: var(--accent-gold);
  font-family: var(--font-heading);
  font-size: 26px;
}

.overlay-actions {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Celebration Overlay */
.overlay-celebration {
  background: rgba(8, 9, 20, 0.94);
}

.celebration-content {
  animation: celebrationBounce 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes celebrationBounce {
  0% { opacity: 0; transform: scale(0.5); }
  100% { opacity: 1; transform: scale(1); }
}

.celebration-badge {
  font-family: var(--font-heading);
  font-size: 58px;
  font-weight: 900;
  background: linear-gradient(135deg, #fff858, #ffd700, #ff9e00);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 24px rgba(255, 215, 0, 0.85));
  margin-bottom: 8px;
  animation: badgeGlow 1.5s ease-in-out infinite alternate;
}

@keyframes badgeGlow {
  from { filter: drop-shadow(0 0 15px rgba(255, 215, 0, 0.6)); }
  to { filter: drop-shadow(0 0 35px rgba(255, 215, 0, 1)); }
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(4, 5, 14, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 100;
  padding: 16px;
  animation: fadeIn 0.25s ease forwards;
}

.modal {
  width: 100%;
  max-width: 440px;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), 0 0 30px var(--accent-glow);
  overflow: hidden;
  animation: modalScale 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes modalScale {
  0% { transform: scale(0.9); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.modal-header {
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--panel-border);
}

.modal-header h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 800;
}

.btn-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
}

.btn-close:hover {
  color: var(--text-main);
}

.modal-body {
  padding: 16px 20px;
}

.modal-body ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-main);
}

.modal-body code {
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
  color: var(--accent-cyan);
}

.modal-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--panel-border);
  display: flex;
  justify-content: flex-end;
}

.confetti-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 200;
}

.footer {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.footer strong {
  color: var(--text-main);
}

.hidden {
  display: none !important;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}