/* ==========================================================================
   KAATO FRUIT ARCADE - Ultra Premium Arcade UI/UX Stylesheet
   ========================================================================== */

:root {
  --bg-dark: #07090e;
  --bg-glass-panel: rgba(13, 18, 30, 0.78);
  --bg-glass-card: rgba(18, 25, 42, 0.72);
  --bg-glass-interactive: rgba(26, 36, 60, 0.65);
  
  --border-glass: rgba(255, 255, 255, 0.12);
  --border-glass-bright: rgba(255, 255, 255, 0.22);
  --border-neon-cyan: rgba(0, 243, 255, 0.45);
  --border-neon-gold: rgba(255, 215, 0, 0.45);
  --border-neon-pink: rgba(255, 51, 102, 0.45);

  --accent-cyan: #00f3ff;
  --accent-cyan-glow: rgba(0, 243, 255, 0.5);
  --accent-pink: #ff2d60;
  --accent-pink-glow: rgba(255, 45, 96, 0.5);
  --accent-gold: #ffd200;
  --accent-gold-glow: rgba(255, 210, 0, 0.5);
  --accent-green: #00ff88;
  --accent-green-glow: rgba(0, 255, 136, 0.5);
  --accent-purple: #a855f7;

  --text-primary: #ffffff;
  --text-secondary: #94a3b8;
  --text-dim: #64748b;

  --font-arcade: 'Luckiest Guy', cursive, sans-serif;
  --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Space Grotesk', monospace;

  --blur-base: 18px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 9999px;

  --transition-snappy: 0.15s cubic-bezier(0.2, 0.8, 0.2, 1);
  --transition-smooth: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   Reset & Core Viewport
   ========================================================================== */

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

html, body {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background-color: var(--bg-dark);
  font-family: var(--font-main);
  color: var(--text-primary);
  position: relative;
}

/* Hidden video element for raw camera stream */
#webcam {
  display: none;
  position: absolute;
  top: -9999px;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
}

/* Fullscreen Canvas */
#gameCanvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1;
  display: block;
  background: radial-gradient(circle at 50% 50%, #151e36 0%, #080b13 70%, #030509 100%);
  cursor: crosshair;
}

/* Ambient Background Light Flares */
.ambient-glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 2;
  filter: blur(80px);
  opacity: 0.35;
  transition: opacity 1s ease;
}

.glow-top {
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 250px;
  background: radial-gradient(circle, rgba(0, 243, 255, 0.4), rgba(255, 51, 102, 0.15), transparent 70%);
}

.glow-bottom {
  bottom: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 300px;
  background: radial-gradient(circle, rgba(255, 210, 0, 0.25), rgba(0, 255, 136, 0.1), transparent 70%);
}

/* ==========================================================================
   Protocol / CORS Banner
   ========================================================================== */

.cors-banner {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: linear-gradient(90deg, #ff1744, #ff5252);
  color: #fff;
  z-index: 9999;
  padding: 10px 18px;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(255, 23, 68, 0.5);
  letter-spacing: 0.3px;
}

.cors-banner a {
  color: #ffebee;
  font-weight: 800;
  text-decoration: underline;
  margin-left: 6px;
}

.cors-banner code {
  background: rgba(0, 0, 0, 0.3);
  padding: 2px 8px;
  border-radius: 6px;
  font-family: var(--font-mono);
}

.cors-tag {
  background: rgba(0, 0, 0, 0.35);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 800;
  margin-right: 6px;
  font-size: 11px;
  letter-spacing: 1px;
}

.ui-svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  display: block;
}

.ui-svg.lg-svg {
  width: 22px;
  height: 22px;
}

/* ==========================================================================
   HUD Layout
   ========================================================================== */

#hud {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 10;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 18px 24px;
}

.hud-header, .hud-controls, .guide-toast, .gameplay-hud {
  pointer-events: auto;
}

/* ==========================================================================
   Top Header Navigation
   ========================================================================== */

.hud-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  width: 100%;
}

/* Brand Section */
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo-frame {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.2), rgba(255, 51, 102, 0.2));
  border: 1.5px solid rgba(255, 215, 0, 0.4);
  padding: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 20px rgba(255, 170, 0, 0.25), inset 0 0 10px rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(var(--blur-base));
  transition: transform var(--transition-snappy), box-shadow var(--transition-snappy);
}

.brand-logo-frame:hover {
  transform: scale(1.06) rotate(-2deg);
  box-shadow: 0 8px 25px rgba(255, 170, 0, 0.45);
}

.brand-logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 12px;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.5));
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.title {
  font-family: var(--font-arcade);
  font-size: 26px;
  letter-spacing: 1px;
  line-height: 1;
  background: linear-gradient(180deg, #ffffff 0%, #ffe600 40%, #ff5252 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 10px rgba(255, 82, 82, 0.35));
}

.subtitle-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.arcade-tag {
  background: linear-gradient(90deg, #ff007f, #ffaa00);
  color: #fff;
  font-size: 9px;
  font-weight: 900;
  padding: 1px 6px;
  border-radius: 4px;
  letter-spacing: 1px;
  box-shadow: 0 0 8px rgba(255, 0, 127, 0.5);
}

.subtitle {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--text-secondary);
}

/* Mode Selector Tabs */
.mode-selector {
  display: flex;
  background: var(--bg-glass-panel);
  border: 1px solid var(--border-glass-bright);
  border-radius: var(--radius-pill);
  padding: 4px;
  backdrop-filter: blur(var(--blur-base));
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.15);
  gap: 2px;
}

.mode-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  padding: 7px 18px;
  border-radius: var(--radius-pill);
  font-family: var(--font-main);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-snappy);
}

.mode-icon {
  font-size: 14px;
  transition: transform var(--transition-snappy);
}

.mode-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.mode-btn:hover .mode-icon {
  transform: scale(1.2);
}

.mode-btn.active {
  background: linear-gradient(135deg, rgba(0, 243, 255, 0.25), rgba(0, 119, 255, 0.3));
  border: 1px solid var(--accent-cyan);
  color: #ffffff;
  box-shadow: 0 0 16px rgba(0, 243, 255, 0.4), inset 0 0 8px rgba(0, 243, 255, 0.2);
}

/* Status & Quick Action Buttons */
.status-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-btn {
  background: var(--bg-glass-panel);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  cursor: pointer;
  backdrop-filter: blur(var(--blur-base));
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.35);
  transition: all var(--transition-snappy);
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  transform: scale(1.08);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5);
}

.action-badge-btn {
  background: var(--bg-glass-panel);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-family: var(--font-main);
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  backdrop-filter: blur(var(--blur-base));
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.35);
  transition: all var(--transition-snappy);
}

.action-badge-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 16px rgba(0, 243, 255, 0.3);
  transform: translateY(-1px);
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 700;
  backdrop-filter: blur(var(--blur-base));
  border: 1px solid var(--border-glass);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
  transition: all var(--transition-smooth);
}

.badge-loading {
  background: rgba(255, 184, 0, 0.15);
  border-color: rgba(255, 184, 0, 0.45);
  color: #ffd043;
}

.badge-searching {
  background: rgba(0, 170, 255, 0.15);
  border-color: rgba(0, 170, 255, 0.45);
  color: #5ed2ff;
}

.badge-tracking {
  background: rgba(0, 255, 136, 0.18);
  border-color: rgba(0, 255, 136, 0.55);
  color: #4eff9f;
  box-shadow: 0 0 20px rgba(0, 255, 136, 0.35);
}

.badge-error {
  background: rgba(255, 51, 102, 0.18);
  border-color: rgba(255, 51, 102, 0.5);
  color: #ff668c;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: currentColor;
  box-shadow: 0 0 10px currentColor;
  animation: pulse-dot 1.4s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.35); opacity: 0.5; }
}

.badge-fps {
  background: var(--bg-glass-panel);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
}

.fps-label {
  font-size: 10px;
  font-weight: 800;
  color: var(--text-dim);
  letter-spacing: 1px;
}

.fps-num {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 13px;
  color: var(--accent-green);
  text-shadow: 0 0 8px rgba(0, 255, 136, 0.4);
}

/* ==========================================================================
   Center Stage Gameplay HUD (Score, Multipliers & Lives)
   ========================================================================== */

.gameplay-hud {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-top: 10px;
}

/* Holographic Score Pod */
.score-card {
  background: linear-gradient(150deg, rgba(20, 28, 48, 0.85), rgba(10, 15, 26, 0.85));
  border: 1.5px solid var(--border-neon-cyan);
  padding: 14px 28px;
  border-radius: var(--radius-md);
  backdrop-filter: blur(var(--blur-base));
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6), 0 0 24px rgba(0, 243, 255, 0.15);
  display: flex;
  flex-direction: column;
  min-width: 170px;
  position: relative;
  overflow: hidden;
}

.score-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 200%;
  height: 2px;
  background: linear-gradient(90deg, transparent, #00f3ff, transparent);
  animation: score-scan 4s linear infinite;
}

@keyframes score-scan {
  0% { transform: translateX(0); }
  100% { transform: translateX(100%); }
}

.score-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  gap: 16px;
}

.score-label {
  font-family: var(--font-arcade);
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--accent-cyan);
  text-shadow: 0 0 8px rgba(0, 243, 255, 0.4);
}

.high-score-tag {
  font-size: 11px;
  font-weight: 800;
  color: var(--accent-gold);
  display: flex;
  align-items: center;
  gap: 4px;
  letter-spacing: 0.5px;
}

.trophy-icon {
  font-size: 12px;
  filter: drop-shadow(0 0 6px rgba(255, 215, 0, 0.5));
}

.score-number-wrapper {
  margin-top: 4px;
}

.score-number {
  font-family: var(--font-mono);
  font-size: 52px;
  font-weight: 900;
  line-height: 1;
  color: #ffffff;
  text-shadow: 0 0 20px rgba(0, 243, 255, 0.75), 0 2px 4px rgba(0, 0, 0, 0.8);
  display: inline-block;
  transition: transform 0.1s ease;
}

/* Classic Mode Lives Pod */
.lives-container {
  display: flex;
  gap: 10px;
  background: var(--bg-glass-panel);
  border: 1px solid var(--border-glass-bright);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  backdrop-filter: blur(var(--blur-base));
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

.life-slot {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-snappy);
}

.strike-svg {
  width: 18px;
  height: 18px;
  stroke: rgba(255, 255, 255, 0.2);
  stroke-width: 2.5;
  stroke-linecap: round;
  transition: all var(--transition-snappy);
  display: block;
}

.life-slot.struck {
  background: rgba(255, 45, 96, 0.2);
  border-color: var(--accent-pink);
  box-shadow: 0 0 16px rgba(255, 45, 96, 0.4);
  animation: strike-pop 0.35s ease-out;
}

.life-slot.struck .strike-svg {
  stroke: var(--accent-pink);
  filter: drop-shadow(0 0 8px var(--accent-pink));
  transform: scale(1.15);
}

@keyframes strike-pop {
  0% { transform: scale(1.5) rotate(0deg); }
  25% { transform: scale(1.3) rotate(-15deg); }
  50% { transform: scale(1.15) rotate(15deg); }
  100% { transform: scale(1) rotate(0deg); }
}

/* Zen / Arcade Timer Pod */
.timer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--bg-glass-panel);
  border: 1.5px solid var(--border-neon-gold);
  padding: 10px 24px;
  border-radius: var(--radius-md);
  backdrop-filter: blur(var(--blur-base));
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45), 0 0 16px rgba(255, 210, 0, 0.15);
  min-width: 120px;
}

.timer-label {
  font-size: 10px;
  font-weight: 900;
  color: var(--accent-gold);
  letter-spacing: 1.5px;
}

.timer-number {
  font-family: var(--font-mono);
  font-size: 38px;
  font-weight: 800;
  line-height: 1;
  color: #fff;
  text-shadow: 0 0 14px rgba(255, 210, 0, 0.6);
}

/* ==========================================================================
   Bottom Controls Bar & Blade Picker
   ========================================================================== */

.hud-controls {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 18px;
  width: 100%;
}

.control-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-glass-bright);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  backdrop-filter: blur(var(--blur-base));
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.5), inset 0 1px 1px rgba(255, 255, 255, 0.15);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

.control-label {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-primary);
}

.control-sublabel {
  font-size: 10px;
  font-weight: 700;
  color: var(--accent-cyan);
  letter-spacing: 0.5px;
}

.blade-selector {
  display: flex;
  gap: 8px;
}

.blade-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-snappy);
}

.blade-btn:hover {
  background: rgba(255, 255, 255, 0.14);
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.35);
}

.blade-btn.active {
  background: rgba(0, 243, 255, 0.18);
  border-color: var(--accent-cyan);
  color: #fff;
  box-shadow: 0 0 16px rgba(0, 243, 255, 0.35);
}

.swatch {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  display: inline-block;
}

.action-card {
  flex-direction: row;
  align-items: center;
  gap: 12px;
}

.action-btn {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 11px 18px;
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-snappy);
}

.action-btn:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-2px);
}

.action-btn.active {
  background: rgba(0, 255, 136, 0.15);
  border-color: var(--accent-green);
  color: var(--accent-green);
  box-shadow: 0 0 14px rgba(0, 255, 136, 0.3);
}

.start-action-btn {
  background: linear-gradient(135deg, #ffea00, #ff5252);
  border: none;
  color: #050811;
  padding: 11px 20px;
  border-radius: var(--radius-sm);
  font-family: var(--font-arcade);
  font-size: 15px;
  letter-spacing: 1px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 8px 24px rgba(255, 82, 82, 0.45);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-snappy);
}

.start-action-btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 10px 30px rgba(255, 82, 82, 0.6);
  filter: brightness(1.1);
}

/* ==========================================================================
   Instruction Toast
   ========================================================================== */

.guide-toast {
  display: flex;
  align-items: center;
  gap: 14px;
  background: linear-gradient(135deg, rgba(16, 24, 42, 0.95), rgba(24, 36, 64, 0.95));
  border: 1px solid var(--border-neon-cyan);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  backdrop-filter: blur(var(--blur-base));
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.6), 0 0 20px rgba(0, 243, 255, 0.18);
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  max-width: 520px;
  animation: slide-up 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slide-up {
  from { transform: translate(-50%, 40px); opacity: 0; }
  to { transform: translate(-50%, 0); opacity: 1; }
}

.toast-indicator {
  font-family: var(--font-arcade);
  font-size: 11px;
  letter-spacing: 1.5px;
  color: var(--accent-cyan);
  background: rgba(0, 243, 255, 0.15);
  border: 1px solid var(--border-neon-cyan);
  padding: 4px 8px;
  border-radius: 6px;
  flex-shrink: 0;
}

.toast-content strong {
  display: block;
  font-size: 13px;
  color: #fff;
  font-weight: 800;
}

.toast-content p {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-top: 2px;
}

.toast-close {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 16px;
  cursor: pointer;
  padding: 6px;
  border-radius: 50%;
  transition: all var(--transition-snappy);
}

.toast-close:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   Modals (Welcome / Permission & Game Over)
   ========================================================================== */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(4, 7, 14, 0.88);
  backdrop-filter: blur(20px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  transition: opacity 0.25s ease;
}

.modal-card {
  background: linear-gradient(150deg, rgba(22, 30, 52, 0.98), rgba(12, 16, 30, 0.98));
  border: 1.5px solid var(--border-glass-bright);
  border-radius: var(--radius-lg);
  padding: 34px 36px;
  max-width: 520px;
  width: 100%;
  text-align: center;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.8), 0 0 40px rgba(0, 243, 255, 0.15);
  animation: modal-pop 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

@keyframes modal-pop {
  from { transform: scale(0.92); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* Hero Logo in Welcome Modal */
.hero-logo-container {
  margin: -10px auto 14px auto;
  max-width: 250px;
  display: flex;
  justify-content: center;
  filter: drop-shadow(0 12px 28px rgba(255, 170, 0, 0.45));
  animation: floatHero 3.5s ease-in-out infinite;
}

@keyframes floatHero {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-8px) rotate(1deg); }
}

.hero-logo-img {
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 18px;
}

.welcome-title {
  font-family: var(--font-arcade);
  font-size: 24px;
  letter-spacing: 1px;
  color: #fff;
  margin-bottom: 8px;
  background: linear-gradient(180deg, #ffffff, #ffe600, #ff5252);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.welcome-desc {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.welcome-desc strong {
  color: var(--accent-cyan);
}

.feature-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-bottom: 24px;
}

.feature-pill {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #f1f5f9;
}

.pill-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
  display: inline-block;
  flex-shrink: 0;
}

.modal-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.start-btn {
  width: 100%;
  border: none;
  border-radius: var(--radius-md);
  padding: 14px 22px;
  font-family: var(--font-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-snappy);
}

.btn-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.btn-text-block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.btn-main-text {
  font-size: 16px;
  font-weight: 800;
  line-height: 1.2;
}

.btn-sub-text {
  font-size: 11px;
  font-weight: 600;
  opacity: 0.85;
}

.primary-start {
  background: linear-gradient(135deg, #00f3ff, #0077ff);
  color: #030814;
  box-shadow: 0 8px 25px rgba(0, 243, 255, 0.4);
}

.primary-start:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 34px rgba(0, 243, 255, 0.6);
  filter: brightness(1.08);
}

.btn-shine {
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transform: skewX(-20deg);
  animation: shine 3s infinite;
}

@keyframes shine {
  0% { left: -100%; }
  25%, 100% { left: 160%; }
}

.secondary-start {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-glass-bright);
  color: #ffffff;
}

.secondary-start:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-2px);
}

.modal-status-hint {
  margin-top: 16px;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-green);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.modal-status-hint .pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
}

.modal-error {
  margin-top: 14px;
  padding: 10px 14px;
  border-radius: 10px;
  background: rgba(255, 51, 102, 0.18);
  border: 1px solid var(--accent-pink);
  color: #ff668c;
  font-size: 13px;
  text-align: left;
}

/* ==========================================================================
   Game Over Modal
   ========================================================================== */

.gameover-card {
  max-width: 460px;
}

.gameover-header {
  margin-bottom: 22px;
  position: relative;
}

.gameover-logo-wrap {
  width: 80px;
  height: 80px;
  margin: -10px auto 10px auto;
  filter: drop-shadow(0 6px 16px rgba(255, 170, 0, 0.35));
}

.gameover-mini-logo {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.gameover-icon-circle {
  font-size: 42px;
  margin-bottom: 6px;
}

#gameOverTitle {
  font-family: var(--font-arcade);
  font-size: 32px;
  letter-spacing: 2px;
  color: #ff2d60;
  text-shadow: 0 0 20px rgba(255, 45, 96, 0.6);
  margin-bottom: 4px;
}

#gameOverSubtitle {
  font-size: 13px;
  color: var(--text-secondary);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 24px;
}

.stat-box {
  background: var(--bg-glass-panel);
  border: 1px solid var(--border-glass);
  padding: 14px;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
}

.stat-box.primary-stat {
  border-color: var(--border-neon-cyan);
  background: rgba(0, 243, 255, 0.08);
  box-shadow: 0 0 20px rgba(0, 243, 255, 0.15);
}

.stat-label {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--text-secondary);
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 900;
  color: #ffffff;
}

.stat-value.highlight {
  color: var(--accent-cyan);
  text-shadow: 0 0 16px rgba(0, 243, 255, 0.6);
}

.gameover-play-btn {
  background: linear-gradient(135deg, #ffea00, #ff2d60);
  color: #060913;
  box-shadow: 0 8px 28px rgba(255, 45, 96, 0.5);
  justify-content: center;
}

.gameover-play-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(255, 45, 96, 0.7);
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */

@media (max-width: 860px) {
  #hud {
    padding: 12px;
  }

  .hud-header {
    flex-wrap: wrap;
  }

  .brand-logo-frame {
    width: 44px;
    height: 44px;
  }

  .title {
    font-size: 20px;
  }

  .mode-selector {
    order: 3;
    width: 100%;
    justify-content: space-around;
    margin-top: 4px;
  }

  .hud-controls {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .blade-selector {
    flex-wrap: wrap;
  }

  .score-number {
    font-size: 38px;
  }

  .guide-toast {
    max-width: 92%;
    bottom: 110px;
  }
}