/*═══════════════════════════════════════════════════════════════════════════════
  MODERN MINDREADER - CSS VARIABLES & DESIGN SYSTEM
═══════════════════════════════════════════════════════════════════════════════*/

:root {
  /* Modern Color Palette */
  --primary-50: #f0f9ff;
  --primary-100: #e0f2fe;
  --primary-200: #bae6fd;
  --primary-300: #7dd3fc;
  --primary-400: #38bdf8;
  --primary-500: #0ea5e9;
  --primary-600: #0284c7;
  --primary-700: #0369a1;
  --primary-800: #075985;
  --primary-900: #0c4a6e;

  --accent-50: #fdf4ff;
  --accent-100: #fae8ff;
  --accent-200: #f5d0fe;
  --accent-300: #f0abfc;
  --accent-400: #e879f9;
  --accent-500: #d946ef;
  --accent-600: #c026d3;
  --accent-700: #a21caf;
  --accent-800: #86198f;
  --accent-900: #701a75;

  --success-50: #f0fdf4;
  --success-100: #dcfce7;
  --success-200: #bbf7d0;
  --success-300: #86efac;
  --success-400: #4ade80;
  --success-500: #22c55e;
  --success-600: #16a34a;
  --success-700: #15803d;
  --success-800: #166534;
  --success-900: #14532d;

  --neutral-50: #fafafa;
  --neutral-100: #f5f5f5;
  --neutral-200: #e5e5e5;
  --neutral-300: #d4d4d4;
  --neutral-400: #a3a3a3;
  --neutral-500: #737373;
  --neutral-600: #525252;
  --neutral-700: #404040;
  --neutral-800: #262626;
  --neutral-900: #171717;
  --neutral-950: #0a0a0a;

  /* Dark Theme Colors */
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --bg-glass: rgba(255, 255, 255, 0.05);
  --bg-glass-strong: rgba(255, 255, 255, 0.08);

  --text-primary: #ffffff;
  --text-secondary: #a3a3a3;
  --text-muted: #737373;
  --text-accent: var(--primary-400);

  --border-primary: rgba(255, 255, 255, 0.1);
  --border-secondary: rgba(255, 255, 255, 0.05);
  --border-accent: rgba(56, 189, 248, 0.3);

  /* Spacing System (8px base) */
  --space-1: 0.25rem; /* 4px */
  --space-2: 0.5rem; /* 8px */
  --space-3: 0.75rem; /* 12px */
  --space-4: 1rem; /* 16px */
  --space-5: 1.25rem; /* 20px */
  --space-6: 1.5rem; /* 24px */
  --space-8: 2rem; /* 32px */
  --space-10: 2.5rem; /* 40px */
  --space-12: 3rem; /* 48px */
  --space-16: 4rem; /* 64px */
  --space-20: 5rem; /* 80px */
  --space-24: 6rem; /* 96px */

  /* Typography Scale */
  --font-family-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --font-family-mono: "JetBrains Mono", "Fira Code", "Consolas", monospace;

  --text-xs: 0.75rem; /* 12px */
  --text-sm: 0.875rem; /* 14px */
  --text-base: 1rem; /* 16px */
  --text-lg: 1.125rem; /* 18px */
  --text-xl: 1.25rem; /* 20px */
  --text-2xl: 1.5rem; /* 24px */
  --text-3xl: 1.875rem; /* 30px */
  --text-4xl: 2.25rem; /* 36px */
  --text-5xl: 3rem; /* 48px */
  --text-6xl: 3.75rem; /* 60px */
  --text-7xl: 4.5rem; /* 72px */

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 40px rgba(56, 189, 248, 0.15);
  --shadow-glow-strong: 0 0 60px rgba(56, 189, 248, 0.25);
  --shadow-success: 0 0 40px rgba(34, 197, 94, 0.15);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* Z-index Scale */
  --z-background: -1;
  --z-base: 0;
  --z-elevated: 10;
  --z-overlay: 50;
  --z-modal: 100;
}

/*═══════════════════════════════════════════════════════════════════════════════
  RESET & BASE STYLES
═══════════════════════════════════════════════════════════════════════════════*/

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  height: 100%;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  min-height: 100vh;
  overflow-x: hidden;
  user-select: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

/*═══════════════════════════════════════════════════════════════════════════════
  MODERN ANIMATED BACKGROUND
═══════════════════════════════════════════════════════════════════════════════*/

.bg-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-background);
  pointer-events: none;
  overflow: hidden;
}

.mesh-gradient {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
      circle at 20% 80%,
      rgba(56, 189, 248, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 20%,
      rgba(217, 70, 239, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 40% 40%,
      rgba(34, 197, 94, 0.05) 0%,
      transparent 50%
    );
  animation: meshFloat 20s ease-in-out infinite;
}

.gradient-orb {
  position: absolute;
  border-radius: var(--radius-full);
  filter: blur(80px);
  opacity: 0.6;
  animation: orbFloat 25s ease-in-out infinite;
}

.orb-1 {
  width: 400px;
  height: 400px;
  background: linear-gradient(135deg, var(--primary-500), var(--accent-500));
  top: -10%;
  left: -10%;
  animation-delay: 0s;
}

.orb-2 {
  width: 300px;
  height: 300px;
  background: linear-gradient(135deg, var(--accent-500), var(--success-500));
  top: 60%;
  right: -10%;
  animation-delay: -8s;
}

.orb-3 {
  width: 350px;
  height: 350px;
  background: linear-gradient(135deg, var(--success-500), var(--primary-500));
  bottom: -10%;
  left: 30%;
  animation-delay: -16s;
}

.orb-4 {
  width: 250px;
  height: 250px;
  background: linear-gradient(135deg, var(--primary-400), var(--accent-400));
  top: 30%;
  left: 70%;
  animation-delay: -12s;
}

@keyframes orbFloat {
  0%,
  100% {
    transform: translate(0, 0) rotate(0deg) scale(1);
  }
  25% {
    transform: translate(50px, -50px) rotate(90deg) scale(1.1);
  }
  50% {
    transform: translate(-30px, 40px) rotate(180deg) scale(0.9);
  }
  75% {
    transform: translate(40px, 30px) rotate(270deg) scale(1.05);
  }
}

@keyframes meshFloat {
  0%,
  100% {
    transform: scale(1) rotate(0deg);
  }
  50% {
    transform: scale(1.1) rotate(180deg);
  }
}

/*═══════════════════════════════════════════════════════════════════════════════
  LAYOUT STRUCTURE
═══════════════════════════════════════════════════════════════════════════════*/

.app-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-6);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: var(--z-base);
}

/*═══════════════════════════════════════════════════════════════════════════════
  MODERN HEADER DESIGN
═══════════════════════════════════════════════════════════════════════════════*/

.app-header {
  text-align: center;
  margin-bottom: var(--space-16);
  animation: fadeInUp 1s ease forwards;
}

.bismillah-text {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-8);
  font-family: var(--font-family-mono);
  opacity: 0.8;
  letter-spacing: 0.05em;
  transition: all var(--transition-normal);
}

.bismillah-text:hover {
  opacity: 1;
  color: var(--text-accent);
  transform: translateY(-2px);
}

.brand-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.brand-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-500), var(--accent-500));
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
  animation: iconPulse 3s ease-in-out infinite;
}

.brand-icon svg {
  width: 32px;
  height: 32px;
  color: white;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.brand-title {
  font-size: clamp(3rem, 8vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
}

.brand-mind {
  background: linear-gradient(135deg, var(--primary-400), var(--primary-600));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.brand-reader {
  background: linear-gradient(135deg, var(--accent-400), var(--accent-600));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.brand-subtitle {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  font-weight: 400;
  line-height: 1.7;
}

@keyframes iconPulse {
  0%,
  100% {
    transform: scale(1);
    box-shadow: var(--shadow-glow);
  }
  50% {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow-strong);
  }
}

/*═══════════════════════════════════════════════════════════════════════════════
  GAME SCREENS
═══════════════════════════════════════════════════════════════════════════════*/

.game-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) 0;
}

.screen {
  display: none;
  width: 100%;
  max-width: 700px;
  margin: 0 auto;
  animation: screenEnter 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.screen.active {
  display: block;
}

@keyframes screenEnter {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/*═══════════════════════════════════════════════════════════════════════════════
  WELCOME SCREEN
═══════════════════════════════════════════════════════════════════════════════*/

.welcome-content {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-3xl);
  padding: var(--space-12);
  text-align: center;
  box-shadow: var(--shadow-2xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.welcome-content::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.1),
    rgba(255, 255, 255, 0.05)
  );
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.welcome-content:hover {
  background: var(--bg-card-hover);
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl), var(--shadow-glow);
  border-color: var(--border-accent);
}

.welcome-content:hover::before {
  opacity: 1;
}

.welcome-icon {
  width: 100px;
  height: 100px;
  margin: 0 auto var(--space-8);
  background: linear-gradient(135deg, var(--primary-500), var(--accent-500));
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  box-shadow: var(--shadow-glow);
  animation: welcomeIconFloat 4s ease-in-out infinite;
}

.icon-glow {
  position: absolute;
  top: -20px;
  left: -20px;
  right: -20px;
  bottom: -20px;
  background: linear-gradient(135deg, var(--primary-500), var(--accent-500));
  border-radius: inherit;
  opacity: 0.3;
  filter: blur(20px);
  z-index: -1;
  animation: glowPulse 3s ease-in-out infinite;
}

.welcome-icon svg {
  width: 60px;
  height: 60px;
  color: white;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.welcome-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-bottom: var(--space-6);
  color: var(--text-primary);
  line-height: 1.3;
}

.welcome-description {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-10);
  line-height: 1.8;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

@keyframes welcomeIconFloat {
  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-10px) rotate(180deg);
  }
}

@keyframes glowPulse {
  0%,
  100% {
    opacity: 0.3;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.1);
  }
}

/*═══════════════════════════════════════════════════════════════════════════════
  STEP SCREENS
═══════════════════════════════════════════════════════════════════════════════*/

.step-content {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-3xl);
  padding: var(--space-10);
  text-align: center;
  box-shadow: var(--shadow-2xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.step-content:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-2xl), var(--shadow-glow);
  border-color: var(--border-accent);
}

.step-progress {
  margin-bottom: var(--space-10);
}

.progress-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.current-step {
  font-size: var(--text-4xl);
  font-weight: 900;
  color: var(--primary-400);
  font-family: var(--font-family-mono);
  text-shadow: 0 0 20px rgba(56, 189, 248, 0.5);
  animation: stepPulse 2s ease-in-out infinite;
}

.step-divider {
  font-size: var(--text-2xl);
  color: var(--text-muted);
  font-family: var(--font-family-mono);
}

.total-steps {
  font-size: var(--text-2xl);
  color: var(--text-secondary);
  font-family: var(--font-family-mono);
  font-weight: 600;
}

.progress-track {
  width: 100%;
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.progress-fill {
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--primary-500),
    var(--accent-500),
    var(--success-500)
  );
  background-size: 200% 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
  animation: progressShimmer 3s ease-in-out infinite;
  position: relative;
}

.progress-fill::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
  animation: progressGlow 2s ease-in-out infinite;
}

.step-title {
  font-size: var(--text-2xl);
  font-weight: 600;
  margin-bottom: var(--space-8);
  color: var(--text-primary);
  line-height: 1.4;
}

@keyframes stepPulse {
  0%,
  100% {
    transform: scale(1);
    text-shadow: 0 0 20px rgba(56, 189, 248, 0.5);
  }
  50% {
    transform: scale(1.05);
    text-shadow: 0 0 30px rgba(56, 189, 248, 0.8);
  }
}

@keyframes progressShimmer {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

@keyframes progressGlow {
  0%,
  100% {
    transform: translateX(-100%);
  }
  50% {
    transform: translateX(100%);
  }
}

/*═══════════════════════════════════════════════════════════════════════════════
  NUMBERS DISPLAY
═══════════════════════════════════════════════════════════════════════════════*/

.numbers-container {
  margin-bottom: var(--space-10);
}

.number-list {
  font-family: var(--font-family-mono);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-accent);
  background: var(--bg-glass-strong);
  padding: var(--space-8);
  border-radius: var(--radius-2xl);
  border: 2px solid var(--border-accent);
  letter-spacing: 0.1em;
  line-height: 1.8;
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
  text-shadow: 0 0 15px rgba(56, 189, 248, 0.6);
}

.number-list::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(56, 189, 248, 0.1),
    transparent
  );
  animation: scanLine 4s ease-in-out infinite;
}

.number-list:hover {
  border-color: var(--primary-300);
  background: var(--bg-card);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}
.number-item {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-block;
  margin: 0 0.3em;
  background-color: rgb(5, 1, 26);
  border: 1px solid rgba(255, 255, 255, 0.1);
  width: 60px;
  text-align: center;
  padding: 0.1em 0.3em;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);

  overflow: hidden;
}
.number-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(130, 122, 219, 0.199),
    transparent
  );
  animation: scanLine 3s ease-in-out infinite;
}

@keyframes scanLine {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

/*═══════════════════════════════════════════════════════════════════════════════
  MODERN BUTTON SYSTEM
═══════════════════════════════════════════════════════════════════════════════*/

.action-buttons {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: center;
}

.primary-btn,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-8);
  font-family: var(--font-family-primary);
  font-size: var(--text-lg);
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  min-width: 180px;
  backdrop-filter: blur(20px);
  transform-origin: center;
  user-select: none;
}

.primary-btn::before,
.secondary-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left var(--transition-slow);
}

.primary-btn:hover::before,
.secondary-btn:hover::before {
  left: 100%;
}

.primary-btn::after,
.secondary-btn::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-full);
  transform: translate(-50%, -50%);
  transition: all var(--transition-normal);
}

.primary-btn:active::after,
.secondary-btn:active::after {
  width: 300px;
  height: 300px;
}

.primary-btn {
  background: linear-gradient(135deg, var(--primary-500), var(--accent-500));
  color: white;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.primary-btn:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-2xl), var(--shadow-glow-strong);
  background: linear-gradient(135deg, var(--primary-400), var(--accent-400));
}

.primary-btn:active {
  transform: translateY(-2px) scale(0.98);
}

.secondary-btn {
  background: var(--bg-glass-strong);
  color: var(--text-primary);
  border: 1px solid var(--border-primary);
  box-shadow: var(--shadow-lg);
}

.secondary-btn:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-2xl);
  border-color: var(--border-accent);
}

.secondary-btn:active {
  transform: translateY(-2px) scale(0.98);
}

.btn-icon {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-normal);
}

.primary-btn:hover .btn-icon,
.secondary-btn:hover .btn-icon {
  transform: translateX(4px);
}

/*═══════════════════════════════════════════════════════════════════════════════
  LOADING SCREEN
═══════════════════════════════════════════════════════════════════════════════*/

.loading-content {
  text-align: center;
  padding: var(--space-12);
}

.loading-spinner {
  width: 100px;
  height: 100px;
  margin: 0 auto var(--space-8);
  position: relative;
}

.spinner-ring {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 3px solid transparent;
  border-radius: var(--radius-full);
}

.spinner-ring:nth-child(1) {
  border-top: 3px solid var(--primary-500);
  animation: spin 1s linear infinite;
}

.spinner-ring:nth-child(2) {
  border-right: 3px solid var(--accent-500);
  animation: spin 1.5s linear infinite reverse;
  width: 80%;
  height: 80%;
  top: 10%;
  left: 10%;
}

.spinner-ring:nth-child(3) {
  border-bottom: 3px solid var(--success-500);
  animation: spin 2s linear infinite;
  width: 60%;
  height: 60%;
  top: 20%;
  left: 20%;
}

.loading-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
  animation: loadingPulse 2s ease-in-out infinite;
}

.loading-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes loadingPulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

/*═══════════════════════════════════════════════════════════════════════════════
  RESULT SCREEN
═══════════════════════════════════════════════════════════════════════════════*/

.result-content {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-3xl);
  padding: var(--space-12);
  text-align: center;
  box-shadow: var(--shadow-2xl);
  position: relative;
  overflow: hidden;
}

.result-icon {
  width: 140px;
  height: 140px;
  margin: 0 auto var(--space-8);
  background: linear-gradient(135deg, var(--success-500), var(--success-600));
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: resultBounce 1s cubic-bezier(0.68, -0.55, 0.265, 1.55) forwards;
  box-shadow: var(--shadow-success);
  position: relative;
}

.success-glow {
  position: absolute;
  top: -20px;
  left: -20px;
  right: -20px;
  bottom: -20px;
  background: linear-gradient(135deg, var(--success-500), var(--success-600));
  border-radius: inherit;
  opacity: 0.3;
  filter: blur(25px);
  z-index: -1;
  animation: successGlow 2s ease-in-out infinite;
}

.result-icon svg {
  width: 70px;
  height: 70px;
  color: white;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.result-title {
  font-size: var(--text-3xl);
  font-weight: 800;
  margin-bottom: var(--space-8);
  color: var(--text-primary);
  animation: fadeInUp 0.8s ease 0.5s both;
}

.result-reveal {
  margin-bottom: var(--space-10);
  animation: fadeInUp 0.8s ease 0.7s both;
}

.reveal-text {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  display: block;
  margin-bottom: var(--space-6);
  font-weight: 500;
}

.answer-number {
  font-family: var(--font-family-mono);
  font-size: var(--text-5xl);
  font-weight: 900;
  color: var(--success-400);
  text-shadow: 0 0 30px rgba(34, 197, 94, 0.6);
  animation: answerReveal 1s cubic-bezier(0.68, -0.55, 0.265, 1.55) 1s both;
  background: linear-gradient(135deg, var(--success-400), var(--accent-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
}
.answer-number::before {
  content: "";
  position: absolute;
  top: 0;

  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(180, 240, 207, 0.107),
    transparent
  );
  animation: scanLine 3s cubic-bezier(0, 1.63, 0.17, -0.38) infinite;
}
.answer-number::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle, rgba(34, 197, 94, 0.199), transparent);
  border-radius: var(--radius-lg);
  filter: blur(30px);
  z-index: -1;
}

@keyframes resultBounce {
  0% {
    opacity: 0;
    transform: scale(0.2);
  }
  60% {
    opacity: 1;
    transform: scale(1.15);
  }
  80% {
    transform: scale(0.9);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes successGlow {
  0%,
  100% {
    opacity: 0.3;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.1);
  }
}

@keyframes answerReveal {
  0% {
    opacity: 0;
    transform: scale(0.5) rotateY(90deg);
  }
  50% {
    opacity: 1;
    transform: scale(1.1) rotateY(0deg);
  }
  100% {
    opacity: 1;
    transform: scale(1) rotateY(0deg);
  }
}

/*═══════════════════════════════════════════════════════════════════════════════
  FOOTER
═══════════════════════════════════════════════════════════════════════════════*/

.app-footer {
  text-align: center;
  padding: var(--space-8) 0;
  color: var(--text-muted);
  font-size: var(--text-sm);
  border-top: 1px solid var(--border-secondary);
  margin-top: var(--space-16);
  position: relative;
}

.app-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--primary-500),
    transparent
  );
}

.author-name {
  color: var(--text-accent);
  font-weight: 600;
}

/*═══════════════════════════════════════════════════════════════════════════════
  ANIMATIONS
═══════════════════════════════════════════════════════════════════════════════*/

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/*═══════════════════════════════════════════════════════════════════════════════
  RESPONSIVE DESIGN
═══════════════════════════════════════════════════════════════════════════════*/

@media (max-width: 768px) {
  .app-container {
    padding: var(--space-4);
  }

  .welcome-content,
  .step-content,
  .result-content {
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
  }

  .action-buttons {
    flex-direction: column;
    gap: var(--space-3);
  }

  .primary-btn,
  .secondary-btn {
    width: 100%;
    min-width: auto;
    padding: var(--space-4) var(--space-6);
  }

  .brand-container {
    flex-direction: column;
    gap: var(--space-3);
  }

  .brand-icon {
    width: 50px;
    height: 50px;
  }

  .brand-icon svg {
    width: 24px;
    height: 24px;
  }

  .brand-subtitle {
    font-size: var(--text-lg);
  }

  .number-list {
    font-size: var(--text-xl);
    padding: var(--space-6);
    min-height: 100px;
  }

  .welcome-icon,
  .result-icon {
    width: 100px;
    height: 100px;
  }

  .welcome-icon svg,
  .result-icon svg {
    width: 50px;
    height: 50px;
  }

  .current-step {
    font-size: var(--text-3xl);
  }

  .answer-number {
    font-size: var(--text-4xl);
  }

  .gradient-orb {
    opacity: 0.3;
  }

  .orb-1 {
    width: 250px;
    height: 250px;
  }

  .orb-2 {
    width: 200px;
    height: 200px;
  }

  .orb-3 {
    width: 220px;
    height: 220px;
  }

  .orb-4 {
    width: 180px;
    height: 180px;
  }
}

@media (max-width: 480px) {
  .app-header {
    margin-bottom: var(--space-12);
  }

  .welcome-content,
  .step-content,
  .result-content {
    padding: var(--space-6);
  }

  .progress-indicator {
    flex-direction: column;
    gap: var(--space-1);
  }

  .current-step {
    font-size: var(--text-2xl);
  }

  .step-divider,
  .total-steps {
    font-size: var(--text-base);
  }

  .number-list {
    font-size: var(--text-lg);
  }

  .answer-number {
    font-size: var(--text-3xl);
  }

  .primary-btn,
  .secondary-btn {
    font-size: var(--text-base);
    padding: var(--space-3) var(--space-5);
  }
}
@media (max-width: 540px) {
  .number-list {
    padding: var(--space-5);

    min-height: 20px;
    flex-wrap: wrap;
    justify-content: center;
    row-gap: 0.5em;
  }

  .number-list span {
    white-space: nowrap;
  }
}

/*═══════════════════════════════════════════════════════════════════════════════
  ACCESSIBILITY & PERFORMANCE
═══════════════════════════════════════════════════════════════════════════════*/

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .gradient-orb {
    animation: none;
  }

  .progress-fill {
    animation: none;
  }

  .mesh-gradient {
    animation: none;
  }
}

.primary-btn:focus-visible,
.secondary-btn:focus-visible {
  outline: 3px solid var(--primary-400);
  outline-offset: 3px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --bg-card: rgba(255, 255, 255, 0.15);
    --bg-card-hover: rgba(255, 255, 255, 0.25);
    --text-secondary: #e5e5e5;
    --border-primary: rgba(255, 255, 255, 0.3);
  }
}

/* Loading states */
.primary-btn.loading,
.secondary-btn.loading {
  pointer-events: none;
  opacity: 0.7;
}

.primary-btn.loading::after,
.secondary-btn.loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}