/* ============================================================
   LOOKSMAXX LAB - Landing Page Styles
   Dark, masculine, premium fitness aesthetic
   Accent: Electric Blue (#3b82f6) on Near-Black (#0a0a0a)
   ============================================================ */

/* ============================================================
   1. CSS RESET + CUSTOM PROPERTIES
   ============================================================ */

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

:root {
  /* Core palette */
  --color-bg:           #0a0a0a;
  --color-bg-2:         #111111;
  --color-bg-3:         #161616;
  --color-bg-card:      #141414;
  --color-border:       #1e1e1e;
  --color-border-hover: #2a2a2a;

  /* Accent */
  --color-blue:         #3b82f6;
  --color-blue-dark:    #2563eb;
  --color-blue-glow:    rgba(59, 130, 246, 0.15);
  --color-blue-glow-2:  rgba(59, 130, 246, 0.08);

  /* Text */
  --color-text-primary:   #ffffff;
  --color-text-secondary: #a1a1aa;
  --color-text-muted:     #52525b;
  --color-text-accent:    #3b82f6;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', Helvetica, Arial, sans-serif;
  --font-mono: 'Courier New', Courier, monospace;

  /* Spacing scale */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  40px;
  --space-2xl: 64px;
  --space-3xl: 96px;
  --space-4xl: 128px;

  /* Border radius */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast:   0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow:   0.4s ease;

  /* Shadows */
  --shadow-card:  0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-glow:  0 0 40px rgba(59, 130, 246, 0.2);
  --shadow-btn:   0 4px 16px rgba(59, 130, 246, 0.35);
  --shadow-btn-hover: 0 8px 28px rgba(59, 130, 246, 0.5);

  /* Layout */
  --container-max: 1120px;
  --container-narrow: 720px;
}

/* ============================================================
   2. BASE STYLES
   ============================================================ */

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-text-primary);
}

ul {
  list-style: none;
}

/* ============================================================
   3. LAYOUT UTILITIES
   ============================================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-xl);
  padding-right: var(--space-xl);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-top: var(--space-4xl);
  padding-bottom: var(--space-4xl);
}

.section--tight {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

/* ============================================================
   4. TYPOGRAPHY
   ============================================================ */

.heading-xl {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.025em;
}

.heading-lg {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.heading-md {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 600;
  line-height: 1.25;
}

.heading-sm {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.3;
}

.text-lg {
  font-size: 1.125rem;
  line-height: 1.7;
}

.text-md {
  font-size: 1rem;
  line-height: 1.65;
}

.text-sm {
  font-size: 0.875rem;
  line-height: 1.6;
}

.text-xs {
  font-size: 0.75rem;
  line-height: 1.5;
}

.text-muted {
  color: var(--color-text-secondary);
}

.text-blue {
  color: var(--color-blue);
}

.text-center {
  text-align: center;
}

/* Gradient text effect */
.text-gradient {
  background: linear-gradient(135deg, #ffffff 30%, #3b82f6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ============================================================
   5. NAVIGATION
   ============================================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-md) 0;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-normal);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.nav__logo span {
  color: var(--color-blue);
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-blue);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: var(--radius-full);
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
  border: none;
  cursor: pointer;
}

.nav__cta:hover {
  background: var(--color-blue-dark);
  box-shadow: var(--shadow-btn-hover);
  color: #fff;
}

/* ============================================================
   6. HERO SECTION
   ============================================================ */

.hero {
  position: relative;
  padding-top: calc(var(--space-4xl) + 80px);
  padding-bottom: var(--space-4xl);
  overflow: hidden;
}

.hero__bg-glow {
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 840px;
  margin: 0 auto;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-blue-glow);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--color-blue);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-lg);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.hero__title {
  margin-bottom: var(--space-lg);
}

.hero__subtitle {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================================
   7. EMAIL CAPTURE FORM
   ============================================================ */

.email-form {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  max-width: 480px;
  margin: 0 auto;
}

.email-form__input {
  flex: 1;
  background: var(--color-bg-2);
  border: 1px solid var(--color-border-hover);
  color: var(--color-text-primary);
  font-size: 0.9375rem;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  font-family: var(--font-sans);
}

.email-form__input::placeholder {
  color: var(--color-text-muted);
}

.email-form__input:focus {
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px var(--color-blue-glow);
}

.email-form__btn {
  flex-shrink: 0;
  background: var(--color-blue);
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 700;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
  font-family: var(--font-sans);
  white-space: nowrap;
}

.email-form__btn:hover {
  background: var(--color-blue-dark);
  box-shadow: var(--shadow-btn-hover);
  transform: translateY(-1px);
}

.email-form__btn:active {
  transform: translateY(0);
}

.email-form__note {
  margin-top: var(--space-sm);
  text-align: center;
  color: var(--color-text-muted);
}

/* ============================================================
   8. STATS BAR
   ============================================================ */

.stats-bar {
  padding: var(--space-xl) 0;
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.stats-bar__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  text-align: center;
}

.stat__number {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  color: var(--color-blue);
  letter-spacing: -0.03em;
  line-height: 1;
}

.stat__label {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
  font-weight: 500;
}

/* ============================================================
   9. FEATURES SECTION
   ============================================================ */

.features {
  background: var(--color-bg);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-blue);
  margin-bottom: var(--space-md);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-blue-glow-2) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.feature-card:hover {
  border-color: rgba(59, 130, 246, 0.35);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card__icon {
  font-size: 2.25rem;
  margin-bottom: var(--space-md);
  display: block;
  line-height: 1;
}

.feature-card__title {
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.feature-card__desc {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.65;
}

/* ============================================================
   10. SOCIAL PROOF SECTION
   ============================================================ */

.social-proof {
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.social-proof__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.proof-communities {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.proof-community-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  transition: border-color var(--transition-fast);
}

.proof-community-item:hover {
  border-color: var(--color-border-hover);
}

.proof-community-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.proof-community-sub {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.proof-community-count {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-blue);
  letter-spacing: -0.02em;
}

.proof-trend {
  text-align: center;
  padding: var(--space-xl);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.proof-trend__number {
  font-size: 5rem;
  font-weight: 800;
  color: var(--color-blue);
  letter-spacing: -0.05em;
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.proof-trend__label {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.proof-trend__sublabel {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

/* ============================================================
   11. PRICING SECTION
   ============================================================ */

.pricing {
  background: var(--color-bg);
}

.pricing__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  max-width: 780px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
}

.pricing-card--pro {
  border-color: var(--color-blue);
  background: linear-gradient(145deg, #0f1a2e 0%, var(--color-bg-card) 100%);
}

.pricing-card--pro::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-blue), transparent);
}

.pricing-badge {
  display: inline-flex;
  background: var(--color-blue);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
}

.pricing-tier {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: var(--space-md);
}

.pricing-price__amount {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
}

.pricing-price__currency {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  align-self: flex-start;
  margin-top: 6px;
}

.pricing-price__period {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.pricing-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.pricing-feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.pricing-feature-item--active {
  color: var(--color-text-primary);
}

.pricing-check {
  color: var(--color-blue);
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.pricing-check--muted {
  color: var(--color-text-muted);
}

.pricing-btn {
  display: block;
  width: 100%;
  text-align: center;
  padding: 14px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.pricing-btn--free {
  background: var(--color-bg-3);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-hover);
}

.pricing-btn--free:hover {
  background: #1c1c1c;
  border-color: var(--color-text-muted);
}

.pricing-btn--pro {
  background: var(--color-blue);
  color: #fff;
  box-shadow: var(--shadow-btn);
}

.pricing-btn--pro:hover {
  background: var(--color-blue-dark);
  box-shadow: var(--shadow-btn-hover);
  transform: translateY(-2px);
}

/* ============================================================
   12. FINAL CTA SECTION
   ============================================================ */

.final-cta {
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.final-cta__title {
  margin-bottom: var(--space-md);
}

.final-cta__subtitle {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================================
   13. FOOTER
   ============================================================ */

.footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer__logo {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.footer__logo span {
  color: var(--color-blue);
}

.footer__tagline {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ============================================================
   14. VARIANT OVERRIDES (for URL param ?v= A/B testing)
   ============================================================ */

/* Variant: blue-heavy */
[data-variant="blue-heavy"] .hero__bg-glow {
  opacity: 1.5;
}

[data-variant="blue-heavy"] .hero__title .text-gradient {
  background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Variant: minimal */
[data-variant="minimal"] .hero__bg-grid {
  display: none;
}

[data-variant="minimal"] .hero__bg-glow {
  display: none;
}

[data-variant="minimal"] .feature-card:hover {
  transform: none;
}

/* Variant: urgent (adds urgency cues) */
[data-variant="urgent"] .hero__badge {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.4);
  color: #f87171;
}

/* ============================================================
   15. RESPONSIVE
   ============================================================ */

@media (max-width: 900px) {
  :root {
    --space-4xl: 80px;
    --space-3xl: 60px;
  }

  .container {
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
  }

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

  .social-proof__grid {
    grid-template-columns: 1fr;
  }

  .proof-trend {
    display: none;
  }

  .stats-bar__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
  }
}

@media (max-width: 640px) {
  :root {
    --space-4xl: 64px;
    --space-3xl: 48px;
    --space-xl: 28px;
  }

  .container {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }

  .email-form {
    flex-direction: column;
  }

  .email-form__input,
  .email-form__btn {
    width: 100%;
  }

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

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

  .stats-bar__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
  }

  .stat__number {
    font-size: 1.5rem;
  }

  .proof-community-item {
    flex-wrap: wrap;
    gap: var(--space-xs);
  }

  .nav__cta {
    font-size: 0.8125rem;
    padding: 7px 14px;
  }
}

@media (max-width: 400px) {
  .stats-bar__grid {
    grid-template-columns: 1fr;
    text-align: left;
  }
}