/* ==========================================================================
   Reputix Landing Page — Professional Dark SaaS Theme
   Modern, clean design with subtle animations and strong typography
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ---------- Design Tokens ---------- */
:root {
  --landing-bg: #09090b;
  --landing-surface: #18181b;
  --landing-card: #1c1c21;
  --landing-card-hover: #222228;
  --landing-card-border: #27272a;
  --landing-card-border-hover: #3f3f46;
  --landing-text: #fafafa;
  --landing-text-secondary: #a1a1aa;
  --landing-text-muted: #71717a;
  --landing-accent: #4f6ef7;
  --landing-accent-soft: rgba(79, 110, 247, 0.12);
  --landing-green: #34d399;
  --landing-green-soft: rgba(52, 211, 153, 0.12);
  --landing-purple: #a78bfa;
  --landing-purple-soft: rgba(167, 139, 250, 0.12);
  --landing-orange: #fb923c;
  --landing-orange-soft: rgba(251, 146, 60, 0.12);
  --landing-blue: #60a5fa;
  --landing-blue-soft: rgba(96, 165, 250, 0.12);
  --landing-teal: #2dd4bf;
  --landing-teal-soft: rgba(45, 212, 191, 0.12);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-glow: 0 0 80px rgba(79, 110, 247, 0.08);
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; }

body.landing-body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  background: var(--landing-bg);
  color: var(--landing-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ---------- Scroll Reveal Animation ---------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.landing-hero, .landing-how, .landing-features, .landing-value {
  animation: fadeInUp 0.6s ease-out both;
}

.landing-how { animation-delay: 0.1s; }
.landing-features { animation-delay: 0.15s; }
.landing-value { animation-delay: 0.2s; }

/* ---------- Layout Container ---------- */
.landing-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- Header ---------- */
.landing-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  max-width: 1120px;
  margin: 0 auto;
  width: 100%;
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}

.landing-header:hover {
  border-bottom-color: var(--landing-card-border);
}

.landing-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--landing-text);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.landing-brand .sparkle {
  color: var(--landing-accent);
  font-size: 1.1rem;
}

.landing-brand .badge-beta {
  font-size: 0.6rem;
  font-weight: 700;
  background: var(--landing-green);
  color: var(--landing-bg);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Logo switching for dark/light mode */
.brand-logo-light { display: none; }
.brand-logo-dark { display: inline-block; }

[data-theme="light"] .brand-logo-light { display: inline-block; }
[data-theme="light"] .brand-logo-dark { display: none; }

.landing-nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  text-decoration: none;
  color: var(--landing-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.55rem 1.1rem;
  border: 1px solid var(--landing-card-border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.landing-nav-link:hover {
  color: var(--landing-text);
  border-color: var(--landing-card-border-hover);
  background: var(--landing-surface);
}

/* ---------- Hero Section ---------- */
.landing-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
  max-width: 820px;
  margin: 0 auto;
  position: relative;
}

/* Ambient glow */
.landing-hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(
    circle,
    rgba(79, 110, 247, 0.08) 0%,
    rgba(52, 211, 153, 0.03) 40%,
    transparent 70%
  );
  border-radius: 50%;
  pointer-events: none;
}

.landing-hero h1 {
  font-weight: 800;
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin: 0 0 1.5rem;
  position: relative;
}

.landing-hero h1 .highlight {
  background: linear-gradient(135deg, var(--landing-green), var(--landing-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.landing-hero .subtitle {
  font-size: 1.125rem;
  color: var(--landing-text-secondary);
  line-height: 1.75;
  max-width: 600px;
  margin: 0;
  position: relative;
}

/* ---------- Section Titles ---------- */
.section-title {
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  text-align: center;
  margin: 0 0 2.5rem;
}

/* ---------- How It Works ---------- */
.landing-how {
  padding: 4rem 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.landing-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.landing-step {
  text-align: center;
  padding: 2rem 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--landing-card-border);
  background: var(--landing-card);
  transition: all var(--transition);
}

.landing-step:hover {
  border-color: var(--landing-card-border-hover);
  background: var(--landing-card-hover);
  transform: translateY(-2px);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--landing-accent-soft);
  color: var(--landing-accent);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.landing-step h3 {
  font-weight: 700;
  font-size: 1rem;
  margin: 0 0 0.5rem;
  color: var(--landing-text);
  letter-spacing: -0.01em;
}

.landing-step p {
  font-size: 0.9rem;
  color: var(--landing-text-secondary);
  margin: 0;
  line-height: 1.6;
}

/* ---------- Features Grid ---------- */
.landing-features {
  padding: 4rem 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.landing-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.landing-feature-card {
  background: var(--landing-card);
  border: 1px solid var(--landing-card-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all var(--transition);
}

.landing-feature-card:hover {
  border-color: var(--landing-card-border-hover);
  background: var(--landing-card-hover);
  transform: translateY(-2px);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--landing-accent-soft);
  color: var(--landing-accent);
  margin-bottom: 1rem;
}

.feature-icon.icon-green {
  background: var(--landing-green-soft);
  color: var(--landing-green);
}

.feature-icon.icon-purple {
  background: var(--landing-purple-soft);
  color: var(--landing-purple);
}

.feature-icon.icon-orange {
  background: var(--landing-orange-soft);
  color: var(--landing-orange);
}

.feature-icon.icon-blue {
  background: var(--landing-blue-soft);
  color: var(--landing-blue);
}

.feature-icon.icon-teal {
  background: var(--landing-teal-soft);
  color: var(--landing-teal);
}

.landing-feature-card h3 {
  font-weight: 700;
  font-size: 0.95rem;
  margin: 0 0 0.5rem;
  color: var(--landing-text);
  letter-spacing: -0.01em;
}

.landing-feature-card p {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--landing-text-secondary);
  margin: 0;
}

/* ---------- Value Proposition ---------- */
.landing-value {
  padding: 5rem 2rem;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.landing-value h2 {
  font-weight: 800;
  font-size: clamp(1.4rem, 3vw, 1.75rem);
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  line-height: 1.3;
}

.value-description {
  font-size: 1rem;
  color: var(--landing-text-secondary);
  line-height: 1.7;
  margin: 0 0 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.value-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.value-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  padding: 1.5rem 1rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--landing-card-border);
  background: var(--landing-card);
}

.stat-value {
  font-weight: 800;
  font-size: 2rem;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--landing-text), var(--landing-text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--landing-text-muted);
  text-align: center;
  line-height: 1.4;
}

/* ---------- Footer ---------- */
.landing-footer {
  padding: 2.5rem 2rem;
  border-top: 1px solid var(--landing-card-border);
  margin-top: 2rem;
}

.footer-content {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--landing-text);
  letter-spacing: -0.02em;
}

.footer-brand .sparkle {
  color: var(--landing-accent);
}

.footer-content p {
  font-size: 0.8rem;
  color: var(--landing-text-muted);
  margin: 0;
}

/* ---------- Light Theme Override (landing is dark by default) ---------- */
[data-theme="light"] .landing-body {
  background: #ffffff;
  color: #1a202c;
}

[data-theme="light"] .landing-header {
  background: rgba(255,255,255,0.92);
  border-bottom-color: #e2e8f0;
}

[data-theme="light"] .landing-brand { color: #1a202c; }
[data-theme="light"] .landing-nav-link { color: #4a5568; border-color: #e2e8f0; }
[data-theme="light"] .landing-nav-link:hover { color: #1a202c; background: #f7fafc; border-color: #cbd5e0; }

[data-theme="light"] .landing-hero h1 { color: #1a202c; }
[data-theme="light"] .landing-hero .subtitle { color: #4a5568; }
[data-theme="light"] .landing-hero::before {
  background: radial-gradient(circle, rgba(79,110,247,0.06) 0%, rgba(52,211,153,0.03) 40%, transparent 70%);
}

[data-theme="light"] .section-title { color: #1a202c; }

[data-theme="light"] .landing-step,
[data-theme="light"] .landing-feature-card,
[data-theme="light"] .value-stat {
  background: #f7fafc;
  border-color: #e2e8f0;
}

[data-theme="light"] .landing-step:hover,
[data-theme="light"] .landing-feature-card:hover {
  background: #edf2f7;
  border-color: #cbd5e0;
}

[data-theme="light"] .landing-step h3,
[data-theme="light"] .landing-feature-card h3 { color: #1a202c; }
[data-theme="light"] .landing-step p,
[data-theme="light"] .landing-feature-card p { color: #4a5568; }

[data-theme="light"] .landing-value h2 { color: #1a202c; }
[data-theme="light"] .value-description { color: #4a5568; }
[data-theme="light"] .stat-value {
  background: linear-gradient(135deg, #1a202c, #4a5568);
  -webkit-background-clip: text;
  background-clip: text;
}
[data-theme="light"] .stat-label { color: #718096; }

[data-theme="light"] .landing-footer { border-top-color: #e2e8f0; }
[data-theme="light"] .landing-footer p { color: #718096; }
[data-theme="light"] .footer-brand { color: #1a202c; }

/* Theme toggle on landing */
.theme-toggle-btn {
  background: transparent;
  border: 1px solid var(--landing-card-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  font-size: 1.1rem;
  cursor: pointer;
  min-height: 44px;
  min-width: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
  line-height: 1;
  color: var(--landing-text);
}

.theme-toggle-btn:hover {
  background: var(--landing-surface);
  border-color: var(--landing-card-border-hover);
}

[data-theme="light"] .theme-toggle-btn {
  border-color: #e2e8f0;
  color: #1a202c;
}

[data-theme="light"] .theme-toggle-btn:hover {
  background: #f7fafc;
  border-color: #cbd5e0;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .landing-features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .landing-steps {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }
  .value-stats {
    grid-template-columns: 1fr;
    max-width: 300px;
    margin: 0 auto;
  }
}

@media (max-width: 640px) {
  .landing-header {
    padding: 1rem 1.25rem;
  }
  .landing-hero {
    padding: 4rem 1.25rem 3rem;
  }
  .landing-how,
  .landing-features,
  .landing-value {
    padding: 3rem 1.25rem;
  }
  .landing-features-grid {
    grid-template-columns: 1fr;
  }
  .footer-content {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }
  .landing-nav-link {
    font-size: 0.8rem;
    padding: 0.45rem 0.9rem;
  }
}