/* ==========================================================================
   Design Tokens & Variables
   ========================================================================== */
:root {
  --bg-primary: #050914;
  --bg-secondary: #07182b;
  --bg-card: rgba(7, 24, 43, 0.65);
  --border-card: rgba(56, 217, 255, 0.15);
  --border-card-hover: rgba(56, 217, 255, 0.4);
  
  --cyan-accent: #38d9ff;
  --blue-accent: #178cff;
  --gradient-accent: linear-gradient(135deg, #38d9ff 0%, #178cff 100%);
  --gradient-glow: radial-gradient(circle, rgba(56, 217, 255, 0.15) 0%, rgba(23, 140, 255, 0.05) 50%, transparent 70%);

  --text-main: #ffffff;
  --text-muted: #94a3b8;
  --text-dark: #050914;

  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  --container-max-width: 1100px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 9999px;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* ==========================================================================
   Base Styles & Reset
   ========================================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 20px 80px;
}

/* Background Ambient Glows */
.glow-bg {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  filter: blur(100px);
}

.glow-top {
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(circle, rgba(56, 217, 255, 0.12) 0%, rgba(23, 140, 255, 0.08) 50%, transparent 70%);
}

.glow-bottom {
  bottom: 5%;
  right: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(23, 140, 255, 0.1) 0%, rgba(56, 217, 255, 0.05) 50%, transparent 70%);
}

/* ==========================================================================
   Layout Container
   ========================================================================== */
.main-container {
  width: 100%;
  max-width: var(--container-max-width);
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 80px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  display: flex;
  align-items: center;
  gap: 50px;
  padding-top: 20px;
}

/* Cover Styling */
.hero-cover-wrapper {
  flex: 0 0 360px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.cover-glow {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background: radial-gradient(circle, rgba(56, 217, 255, 0.25) 0%, rgba(23, 140, 255, 0.1) 60%, transparent 80%);
  filter: blur(30px);
  z-index: -1;
  border-radius: var(--radius-lg);
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.hero-cover-wrapper:hover .cover-glow {
  transform: scale(1.05);
}

.ebook-cover {
  width: 100%;
  max-width: 360px;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), 0 0 20px rgba(56, 217, 255, 0.15);
  display: block;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  object-fit: cover;
}

.hero-cover-wrapper:hover .ebook-cover {
  transform: translateY(-6px);
  box-shadow: 0 28px 50px rgba(0, 0, 0, 0.7), 0 0 30px rgba(56, 217, 255, 0.3);
}

/* Hero Content Styling */
.hero-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background-color: rgba(56, 217, 255, 0.08);
  border: 1px solid rgba(56, 217, 255, 0.25);
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--cyan-accent);
  text-transform: uppercase;
}

.badge-dot {
  width: 7px;
  height: 7px;
  background-color: var(--cyan-accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--cyan-accent);
}

/* Main Heading */
.hero-title {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

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

/* Description */
.hero-description {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 620px;
}

/* Feature List */
.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 6px;
  margin-bottom: 10px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.02rem;
  color: var(--text-main);
  font-weight: 500;
}

.check-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(56, 217, 255, 0.12);
  color: var(--cyan-accent);
  flex-shrink: 0;
}

/* CTA Section */
.cta-wrapper {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  width: 100%;
  margin-top: 10px;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 36px;
  background: var(--gradient-accent);
  color: var(--text-dark);
  font-family: var(--font-family);
  font-size: 1.1rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  box-shadow: 0 0 25px rgba(56, 217, 255, 0.35);
  transition: all var(--transition-normal);
  text-decoration: none;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(56, 217, 255, 0.55);
  filter: brightness(1.08);
}

.cta-button:active {
  transform: translateY(0);
  box-shadow: 0 0 15px rgba(56, 217, 255, 0.3);
}

.btn-icon {
  transition: transform var(--transition-fast);
}

.cta-button:hover .btn-icon {
  transform: translateY(2px);
}

.cta-subtext {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Second Section (Choose the Right AI Opportunity)
   ========================================================================== */
.section {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.section-description {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  backdrop-filter: blur(12px);
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: var(--border-card-hover);
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 0 20px rgba(56, 217, 255, 0.1);
}

.card-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(56, 217, 255, 0.08);
  border: 1px solid rgba(56, 217, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}

.card-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   Trust Section (What You'll Get)
   ========================================================================== */
.trust-section {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 48px 36px;
  backdrop-filter: blur(12px);
}

.trust-container {
  display: flex;
  flex-direction: column;
  gap: 36px;
  align-items: center;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  width: 100%;
  max-width: 900px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(5, 9, 20, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-main);
}

.trust-check {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.trust-cta-bottom {
  margin-top: 10px;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

/* Tablet & Mobile Breakpoints */
@media (max-width: 900px) {
  .hero-section {
    flex-direction: column;
    text-align: center;
    gap: 36px;
  }

  /* Requirement: Mobile cover first, content below it */
  .hero-cover-wrapper {
    order: 1;
    flex: 0 0 auto;
  }

  .ebook-cover {
    max-width: 250px; /* Requirement: 220-260px on mobile */
  }

  .hero-content {
    order: 2;
    align-items: center;
    text-align: center;
  }

  .hero-title {
    font-size: 2.1rem;
  }

  .feature-list {
    align-items: flex-start;
    text-align: left;
    max-width: 420px;
    width: 100%;
  }

  .cta-wrapper {
    align-items: center;
  }

  .cta-button {
    width: 100%;
    max-width: 400px;
  }

  .cards-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

@media (max-width: 480px) {
  body {
    padding: 24px 16px 60px;
  }

  .main-container {
    gap: 60px;
  }

  .ebook-cover {
    max-width: 230px;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .hero-description {
    font-size: 1rem;
  }

  .feature-item {
    font-size: 0.95rem;
  }

  .cta-button {
    font-size: 1rem;
    padding: 15px 24px;
    width: 100%;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .trust-section {
    padding: 32px 20px;
  }

  .trust-grid {
    grid-template-columns: 1fr;
  }
}