/* Go Vanilla Website - Ice Cream Flavors & Privacy Control */

:root {
  /* Ice Cream Color Palette - Vibrant Flavors */
  --pink: #FF6B9D;           /* Strawberry */
  --coral: #FF8B6B;          /* Peach */
  --yellow: #FFD93D;         /* Lemon */
  --mint: #6BCF9F;           /* Mint Chip */
  --blue: #6BB6FF;           /* Blueberry */
  --purple: #A66BFF;         /* Lavender */
  --peach: #FFB4A2;          /* Creamsicle */

  /* Neutrals & B/W */
  --white: #FFFFFF;
  --cream: #FFF9F5;
  --gray-light: #F5F5F5;
  --gray: #A0A0A0;
  --gray-dark: #666666;
  --dark: #2A2A2A;
  --black: #000000;

  /* Gradients */
  --gradient-main: linear-gradient(135deg, var(--pink) 0%, var(--coral) 50%, var(--yellow) 100%);
  --gradient-alt: linear-gradient(135deg, var(--blue) 0%, var(--purple) 100%);
  --gradient-mint: linear-gradient(135deg, var(--mint) 0%, var(--blue) 100%);

  /* Spacing */
  --section-padding: 100px;
  --container-width: 1200px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--dark);
  background: var(--cream);
  overflow-x: hidden;
  line-height: 1.6;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--white);
  border-bottom: 3px solid var(--dark);
  z-index: 1000;
  padding: 20px 0;
}

.nav-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo {
  width: 40px;
  height: 40px;
  border: 3px solid var(--dark);
  border-radius: 12px;
  padding: 4px;
  background: var(--white);
}

.nav-title {
  font-size: 24px;
  font-weight: 800;
  color: var(--dark);
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--dark);
  font-weight: 600;
  font-size: 16px;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: var(--pink);
}

.btn-nav {
  background: var(--gradient-main);
  color: var(--dark);
  padding: 12px 24px;
  border-radius: 100px;
  border: 3px solid var(--dark);
  font-weight: 800;
  transition: transform 0.2s;
}

.btn-nav:hover {
  transform: translateY(-2px);
}

/* Hero Section */
.hero {
  padding: 160px 0 80px;
  background: var(--cream);
  position: relative;
  overflow: hidden;
}

.hero-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  background: var(--yellow);
  color: var(--dark);
  padding: 8px 20px;
  border-radius: 100px;
  border: 3px solid var(--dark);
  font-weight: 800;
  font-size: 14px;
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero-title {
  font-size: 56px;
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 16px;
  color: var(--dark);
}

.hero-subtitle {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 24px;
  color: var(--dark);
}

.gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.hero-description {
  font-size: 18px;
  line-height: 1.7;
  color: var(--dark);
  margin-bottom: 40px;
  opacity: 0.8;
}

/* Mode Toggle Demo */
.mode-toggle-demo {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 40px;
  padding: 32px;
  background: var(--white);
  border: 3px solid var(--dark);
  border-radius: 24px;
  box-shadow: 4px 4px 0 var(--dark);
}

.toggle-option {
  flex: 1;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  padding: 20px;
  border-radius: 16px;
  border: 3px solid transparent;
  position: relative;
}

.toggle-option.active-demo {
  background: var(--cream);
  border: 3px solid var(--dark);
  box-shadow: 6px 6px 0 var(--dark);
  transform: scale(1.02);
}

.toggle-option:not(.active-demo) {
  opacity: 0.5;
  transform: scale(0.98);
}

.toggle-option:hover {
  opacity: 1;
}

.toggle-visual {
  width: 100%;
  height: 120px;
  border: 3px solid var(--dark);
  border-radius: 16px;
  padding: 12px;
  margin-bottom: 16px;
  overflow: hidden;
}

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

.visual-block {
  border: 2px solid var(--dark);
  border-radius: 8px;
  transition: all 0.3s;
}

/* Colorful blocks for "For Me" mode */
.colorful .visual-block.pink { background: var(--pink); }
.colorful .visual-block.yellow { background: var(--yellow); }
.colorful .visual-block.mint { background: var(--mint); }
.colorful .visual-block.coral { background: var(--coral); }
.colorful .visual-block.blue { background: var(--blue); }
.colorful .visual-block.purple { background: var(--purple); }

/* Grayscale blocks for "Go Vanilla" mode */
.bw .visual-block.gray1 { background: #FFFFFF; }
.bw .visual-block.gray2 { background: #E0E0E0; }
.bw .visual-block.gray3 { background: #C0C0C0; }
.bw .visual-block.gray4 { background: #A0A0A0; }
.bw .visual-block.gray5 { background: #808080; }
.bw .visual-block.gray6 { background: #606060; }

.toggle-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 8px;
}

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

.toggle-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--dark);
}

.toggle-desc {
  font-size: 13px;
  color: var(--gray-dark);
  font-weight: 600;
}

/* Toggle Switch */
.toggle-switch {
  position: relative;
  flex-shrink: 0;
}

.toggle-input {
  display: none;
}

.toggle-slider {
  display: block;
  width: 100px;
  height: 100px;
  background: var(--gradient-main);
  border: 5px solid var(--dark);
  border-radius: 50%;
  cursor: pointer;
  position: relative;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 6px 6px 0 var(--dark);
}

.toggle-slider::before {
  content: '⇄';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(0deg);
  font-size: 40px;
  font-weight: 900;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.toggle-input:checked + .toggle-slider {
  background: linear-gradient(135deg, #E0E0E0 0%, #A0A0A0 100%);
}

.toggle-input:checked + .toggle-slider::before {
  transform: translate(-50%, -50%) rotate(180deg);
}

.toggle-slider:hover {
  transform: scale(1.08) rotate(5deg);
  box-shadow: 8px 8px 0 var(--dark);
}

.toggle-slider:active {
  transform: scale(0.95);
  box-shadow: 4px 4px 0 var(--dark);
}

.hero-buttons {
  display: flex;
  gap: 16px;
}

.btn {
  padding: 16px 32px;
  border-radius: 100px;
  border: 3px solid var(--dark);
  font-weight: 800;
  font-size: 16px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s;
  cursor: pointer;
}

.btn-primary {
  background: var(--gradient-main);
  color: var(--dark);
  box-shadow: 6px 6px 0 var(--dark);
}

.btn-primary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--dark);
}

.btn-secondary {
  background: var(--white);
  color: var(--dark);
  box-shadow: 4px 4px 0 var(--dark);
}

.btn-secondary:hover {
  background: var(--cream);
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--dark);
}

/* Hero Visual */
.hero-visual {
  position: relative;
  height: 500px;
}

.hero-image {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
}

.hero-icon {
  width: 200px;
  height: 200px;
  border: 5px solid var(--dark);
  border-radius: 50%;
  background: var(--white);
  padding: 30px;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

.hero-circle {
  position: absolute;
  border: 3px solid var(--dark);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.circle-1 {
  width: 280px;
  height: 280px;
  background: var(--yellow);
  opacity: 0.3;
  animation: pulse 2s ease-in-out infinite;
}

.circle-2 {
  width: 360px;
  height: 360px;
  background: var(--pink);
  opacity: 0.2;
  animation: pulse 2s ease-in-out infinite 0.5s;
}

.circle-3 {
  width: 440px;
  height: 440px;
  background: var(--blue);
  opacity: 0.15;
  animation: pulse 2s ease-in-out infinite 1s;
}

@keyframes pulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  50% { transform: translate(-50%, -50%) scale(1.05); }
}

/* Container */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 40px;
}

/* Section Header */
.section-header {
  text-align: center;
  margin-bottom: 80px;
}

.section-badge {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 100px;
  border: 3px solid var(--dark);
  font-weight: 800;
  font-size: 14px;
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.colorful-badge {
  background: var(--gradient-main);
  color: var(--dark);
}

.bw-badge {
  background: linear-gradient(135deg, #E0E0E0 0%, #A0A0A0 100%);
  color: var(--dark);
}

.section-title {
  font-size: 48px;
  font-weight: 900;
  margin-bottom: 16px;
  color: var(--dark);
}

.section-subtitle {
  font-size: 20px;
  color: var(--gray-dark);
  font-weight: 600;
}

/* Personalize Section - Colorful */
.personalize {
  padding: var(--section-padding) 0;
  background: var(--white);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-card {
  background: var(--cream);
  border: 3px solid var(--dark);
  border-radius: 24px;
  padding: 40px;
  transition: all 0.3s;
  position: relative;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 8px 8px 0 var(--dark);
}

.feature-card:nth-child(1) .feature-icon { background: var(--pink); }
.feature-card:nth-child(2) .feature-icon { background: var(--coral); }
.feature-card:nth-child(3) .feature-icon { background: var(--yellow); }
.feature-card:nth-child(4) .feature-icon { background: var(--mint); }
.feature-card:nth-child(5) .feature-icon { background: var(--blue); }
.feature-card:nth-child(6) .feature-icon { background: var(--purple); }

.feature-icon {
  font-size: 48px;
  width: 80px;
  height: 80px;
  border: 3px solid var(--dark);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.feature-title {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--dark);
}

.feature-description {
  font-size: 16px;
  line-height: 1.6;
  color: var(--dark);
  opacity: 0.7;
}

/* Control Section - Black & White */
.control {
  padding: var(--section-padding) 0;
  background: var(--cream);
}

.control-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.control-card {
  background: var(--white);
  border: 3px solid var(--dark);
  border-radius: 24px;
  padding: 40px;
  text-align: center;
  transition: all 0.3s;
}

.control-card:hover {
  transform: translateY(-8px);
  box-shadow: 8px 8px 0 var(--dark);
}

.control-icon {
  width: 80px;
  height: 80px;
  background: var(--gray-light);
  border: 3px solid var(--dark);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
}

.control-icon svg {
  stroke: var(--dark);
}

.control-title {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--dark);
}

.control-description {
  font-size: 16px;
  line-height: 1.6;
  color: var(--dark);
  opacity: 0.7;
}

/* Insights Section */
.insights {
  padding: var(--section-padding) 0;
  background: var(--white);
}

.insights-content {
  max-width: 800px;
  margin: 0 auto;
}

.insight-item {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  margin-bottom: 48px;
  padding: 32px;
  background: var(--cream);
  border: 3px solid var(--dark);
  border-radius: 20px;
  transition: all 0.3s;
}

.insight-item:hover {
  transform: translateX(8px);
  box-shadow: 8px 8px 0 var(--dark);
}

.insight-item:nth-child(1) .insight-number { background: var(--pink); }
.insight-item:nth-child(2) .insight-number { background: var(--mint); }
.insight-item:nth-child(3) .insight-number { background: var(--blue); }
.insight-item:nth-child(4) .insight-number { background: var(--yellow); }

.insight-number {
  width: 60px;
  height: 60px;
  border: 3px solid var(--dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 900;
  flex-shrink: 0;
  box-shadow: 4px 4px 0 var(--dark);
}

.insight-title {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--dark);
}

.insight-description {
  font-size: 16px;
  line-height: 1.7;
  color: var(--dark);
  opacity: 0.8;
}

/* How It Works Section */
.how-it-works {
  padding: var(--section-padding) 0;
  background: var(--cream);
}

.steps {
  display: flex;
  align-items: center;
  gap: 40px;
  max-width: 900px;
  margin: 0 auto 40px;
}

.step {
  flex: 1;
  text-align: center;
}

.step-number {
  width: 80px;
  height: 80px;
  background: var(--gradient-main);
  border: 4px solid var(--dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  font-weight: 900;
  margin: 0 auto 24px;
  box-shadow: 5px 5px 0 var(--dark);
}

.step-title {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--dark);
}

.step-description {
  font-size: 16px;
  line-height: 1.6;
  color: var(--dark);
  opacity: 0.7;
}

.step-line {
  width: 80px;
  height: 4px;
  background: var(--dark);
  flex-shrink: 0;
}

.timeline-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 20px 32px;
  background: var(--yellow);
  border: 3px solid var(--dark);
  border-radius: 100px;
  font-size: 16px;
  font-weight: 700;
  max-width: 600px;
  margin: 0 auto;
}

.timeline-note svg {
  stroke: var(--dark);
  flex-shrink: 0;
}

/* Download Section */
.download {
  padding: var(--section-padding) 0;
  background: var(--white);
}

.download-card {
  background: var(--gradient-main);
  border: 5px solid var(--dark);
  border-radius: 40px;
  padding: 80px 60px;
  text-align: center;
  box-shadow: 12px 12px 0 var(--dark);
}

.download-icon {
  width: 120px;
  height: 120px;
  border: 5px solid var(--dark);
  border-radius: 50%;
  background: var(--white);
  padding: 20px;
  margin-bottom: 32px;
  animation: float 3s ease-in-out infinite;
}

.download-title {
  font-size: 48px;
  font-weight: 900;
  margin-bottom: 16px;
  color: var(--dark);
}

.download-description {
  font-size: 20px;
  margin-bottom: 40px;
  color: var(--dark);
  opacity: 0.8;
}

.download-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-large {
  padding: 20px 40px;
  font-size: 18px;
}

.btn-outline {
  background: var(--white);
  color: var(--dark);
  box-shadow: 6px 6px 0 var(--dark);
}

.btn-outline:hover {
  background: var(--cream);
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--dark);
}

/* Footer */
.footer {
  background: var(--dark);
  color: var(--white);
  padding: 60px 0 30px;
  border-top: 5px solid var(--dark);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-logo {
  width: 50px;
  height: 50px;
  border: 3px solid var(--white);
  border-radius: 12px;
  padding: 6px;
  background: var(--white);
}

.footer-title {
  font-size: 24px;
  font-weight: 800;
  color: var(--white);
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-links a {
  color: var(--white);
  text-decoration: none;
  font-weight: 600;
  opacity: 0.8;
  transition: opacity 0.3s;
}

.footer-links a:hover {
  opacity: 1;
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 2px solid rgba(255, 255, 255, 0.2);
  opacity: 0.6;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-visual {
    height: 400px;
  }

  .hero-title {
    font-size: 36px;
  }

  .hero-subtitle {
    font-size: 24px;
  }

  .mode-toggle-demo {
    flex-direction: column;
  }

  .features-grid,
  .control-grid {
    grid-template-columns: 1fr;
  }

  .steps {
    flex-direction: column;
  }

  .step-line {
    width: 4px;
    height: 40px;
  }

  .nav-links {
    display: none;
  }
}