/* ==========================================================================
   DESIGN SYSTEM & VARIABLES (LIGHT THEME)
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Outfit:wght@500;700;800&display=swap');

:root {
  /* Colors */
  --bg-primary: #fbfbfd;
  --bg-secondary: #f4f4f7;
  --card-bg: #ffffff;
  --card-border: #e2e8f0;
  
  --color-primary: #2563eb;      /* Cobalt Blue */
  --color-primary-light: #eff6ff;
  --color-primary-glow: rgba(37, 99, 235, 0.08);
  --color-accent: #e11d48;       /* Crimson Red */
  --color-accent-light: #fff1f2;
  
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-light: #64748b;
  
  /* Typography */
  --font-display: 'Outfit', 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  
  /* Transitions */
  --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
  
  /* Border Radius & Spacing */
  --radius-lg: 16px;
  --radius-md: 10px;
  --max-width: 1140px;
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.25;
}

h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 800;
  color: var(--text-main);
}

h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  margin-bottom: 2rem;
  color: var(--text-main);
}

h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

p {
  color: var(--text-muted);
  font-size: 0.975rem;
}

/* ==========================================================================
   LAYOUTS & SECTIONS
   ========================================================================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 6rem 0;
}

/* ==========================================================================
   NAVBAR
   ========================================================================== */
.navbar {
  position: sticky;
  top: 0;
  width: 100%;
  background: rgba(251, 251, 253, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--card-border);
  z-index: 100;
  height: 64px;
  display: flex;
  align-items: center;
}

.navbar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-main);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-accent {
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

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

/* ==========================================================================
   HERO SPLIT SECTION
   ========================================================================== */
.hero-split {
  padding-top: 5rem;
  padding-bottom: 5rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 4rem;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-title {
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 2.25rem;
  line-height: 1.6;
}

/* CTA Group */
.cta-group {
  display: flex;
  gap: 1rem;
  width: 100%;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-smooth);
  border: 1px solid transparent;
}

.btn-primary {
  background-color: #0f172a;
  color: #ffffff;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.btn-primary:hover {
  background-color: #1e293b;
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: #ffffff;
  color: #0f172a;
  border-color: #cbd5e1;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.btn-secondary:hover {
  background-color: #f8fafc;
  border-color: #94a3b8;
  transform: translateY(-1px);
}

.btn-navbar {
  border: 1.5px solid #0f172a;
  color: #0f172a;
  background-color: transparent;
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem;
  border-radius: 6px;
  font-weight: 600;
  text-decoration: none;
  font-family: var(--font-display);
  transition: var(--transition-fast);
}

.btn-navbar:hover {
  background-color: #0f172a;
  color: #ffffff;
}

.btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* ==========================================================================
   APP INTERFACE MOCKUP (REAL SCREENSHOT IN PHONE WRAPPER)
   ========================================================================== */
.phone-mockup {
  position: relative;
  width: 100%;
  max-width: 290px;
  margin: 0 auto;
  border: 10px solid #0f172a;
  border-radius: 36px;
  box-shadow: 0 20px 40px -15px rgba(0,0,0,0.12), 0 15px 25px -10px rgba(0,0,0,0.08);
  overflow: hidden;
  background-color: #000000;
  justify-self: center;
  transition: var(--transition-smooth);
}

.phone-mockup:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: 0 30px 50px -20px rgba(0,0,0,0.18);
}

.phone-mockup img {
  display: block;
  width: 100%;
  height: auto;
}

/* Secondary showcase screenshot card */
.screenshot-card {
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.03);
  overflow: hidden;
  background-color: #ffffff;
}

.screenshot-card img {
  display: block;
  width: 100%;
  height: auto;
}

/* ==========================================================================
   WALKTHROUGH FEATURE SHOWCASE (ASYMMETRIC)
   ========================================================================== */
.feature-showcase {
  background-color: #ffffff;
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
  padding: 7rem 0;
}

.showcase-row {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 5rem;
  align-items: center;
  margin-bottom: 6rem;
}

.showcase-row:nth-child(even) {
  grid-template-columns: 1.2fr 1fr;
}

.showcase-row:last-child {
  margin-bottom: 0;
}

.showcase-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.showcase-label {
  color: var(--color-primary);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.showcase-desc {
  font-size: 1rem;
  margin-top: 1rem;
  line-height: 1.6;
}

/* Asymmetric details display */
.showcase-visual {
  background-color: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 250px;
}

.showcase-row:nth-child(even) .showcase-visual {
  grid-column: 1;
}

.showcase-row:nth-child(even) .showcase-content {
  grid-column: 2;
  grid-row: 1;
}

/* Flat SP engine list mockup */
.stat-points-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.stat-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #ffffff;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
}

.stat-label {
  font-weight: 600;
  color: var(--text-main);
}

.stat-points-display {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.stat-value {
  font-weight: 700;
  color: var(--color-primary);
}

.stat-point-tag {
  background-color: var(--bg-secondary);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--text-light);
}

/* Grid for smaller feature items */
.grid-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.grid-feature-item {
  background-color: #ffffff;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.grid-feature-item h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.grid-feature-item p {
  font-size: 0.85rem;
  line-height: 1.5;
}

/* ==========================================================================
   MINIMAL DOCS-STYLE FAQ SECTION
   ========================================================================== */
.faq-docs {
  background-color: var(--bg-primary);
}

.faq-docs-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-docs-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.faq-docs-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.faq-docs-item {
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 2rem;
}

.faq-docs-item:last-child {
  border-bottom: none;
}

.faq-docs-question {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}

.faq-docs-answer {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  background-color: #ffffff;
  border-top: 1px solid var(--card-border);
  padding: 4rem 0 3rem;
  text-align: center;
}

.footer-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-main);
  margin-bottom: 1rem;
}

.footer-logo span {
  color: var(--color-primary);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
  list-style: none;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-disclaimer {
  max-width: 680px;
  margin: 0 auto;
  font-size: 0.775rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ==========================================================================
   MEDIA QUERIES (RESPONSIVENESS)
   ========================================================================== */
@media (max-width: 900px) {
  .hero-split {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
    padding-top: 3rem;
  }
  
  .hero-content {
    align-items: center;
  }
  
  .cta-group {
    justify-content: center;
  }
  
  .showcase-row,
  .showcase-row:nth-child(even) {
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 4rem;
  }
  
  .showcase-row:nth-child(even) .showcase-visual {
    grid-column: 1;
    grid-row: auto;
  }
  
  .showcase-row:nth-child(even) .showcase-content {
    grid-column: 1;
    grid-row: auto;
  }
}

@media (max-width: 500px) {
  .section {
    padding: 4rem 0;
  }
  
  .cta-group {
    flex-direction: column;
    align-items: stretch;
  }
  
  .btn {
    width: 100%;
  }
  
  .grid-features {
    grid-template-columns: 1fr;
  }
  
  .showcase-visual {
    padding: 1.25rem;
  }
  
  .navbar-container {
    justify-content: center;
  }
  
  .nav-links {
    display: none;
  }
}