/* ======================== */
/* 1. CUSTOM PROPERTIES      */
/* ======================== */

:root {
  /* Colors */
  --color-bg-dark: #111827;
  --color-bg-darker: #0B0F1A;
  --color-bg-light: #F8F9FA;
  --color-bg-white: #FFFFFF;
  --color-text-primary: #111827;
  --color-text-secondary: #4B5563;
  --color-text-muted: #9CA3AF;
  --color-text-white: #FFFFFF;
  --color-text-light: #D1D5DB;
  --color-accent-cyan: #06C1ED;
  --color-accent-lime: #B8FF00;
  --color-accent-cyan-hover: #00B0E0;
  --color-accent-lime-hover: #A6E600;
  --color-border: #E5E7EB;
  --color-card-shadow: rgba(0, 0, 0, 0.08);
  --color-input-bg: #1F2937;
  --color-input-border: #374151;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 720px;
  --border-radius: 12px;
  --border-radius-lg: 16px;
  --border-radius-full: 9999px;

  /* Transitions */
  --transition: 0.2s ease;
}


/* ======================== */
/* 2. RESET & BASE           */
/* ======================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg-white);
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}


/* ======================== */
/* 3. TYPOGRAPHY             */
/* ======================== */

h1 {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

h2 {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.3;
}

h4 {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.4;
}

p {
  color: var(--color-text-secondary);
}

.eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #999;
}

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


/* ======================== */
/* 4. LAYOUT                 */
/* ======================== */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container--narrow {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-padding {
  padding: 5rem 0;
}


/* ======================== */
/* 5. COMPONENTS             */
/* ======================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-family);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  border-radius: var(--border-radius-full);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--color-accent-cyan);
  color: #000;
  padding: 0.875rem 2rem;
}

.btn--primary:hover {
  background: var(--color-accent-cyan-hover);
}

.btn--primary-lg {
  background: var(--color-accent-lime);
  color: #000;
  padding: 1rem 2.5rem;
  font-size: 1.0625rem;
}

.btn--primary-lg:hover {
  background: var(--color-accent-lime-hover);
}

.btn--nav {
  background: var(--color-accent-lime);
  color: #000;
  padding: 0.625rem 1.5rem;
  font-size: 0.875rem;
}

.btn--nav:hover {
  background: var(--color-accent-cyan-hover);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-secondary);
  padding: 0.875rem 0;
  font-weight: 500;
}

.btn--ghost:hover {
  color: var(--color-accent-cyan);
  transform: none;
}

.btn--ghost svg {
  transition: transform var(--transition);
}

.btn--ghost:hover svg {
  transform: translateY(3px);
}

/* Step Badge */
.step-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--color-accent-lime);
  color: #000;
  font-size: 0.8125rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* Check List */
.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.375rem 0;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.5;
}

.check-list li svg {
  flex-shrink: 0;
  margin-top: 0.2rem;
}

/* Card */
.card {
  background: var(--color-bg-white);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: 0 1px 3px var(--color-card-shadow);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.card__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.card__border--cyan {
  border-bottom: 3px solid var(--color-accent-cyan);
}

.card__border--lime {
  border-bottom: 3px solid var(--color-accent-lime);
}

/* Stat Block */
.stat-block {
  text-align: center;
}

.stat-block__number {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat-block__number--cyan {
  color: var(--color-accent-cyan);
}

.stat-block__number--lime {
  color: var(--color-accent-lime);
}

.stat-block__label {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-top: 0.5rem;
  max-width: 220px;
  margin-left: auto;
  margin-right: auto;
}

/* Benefit Block */
.benefit {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.benefit__icon {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.06);
}

.benefit__icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

.benefit h4 {
  color: var(--color-text-white);
}

.benefit p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* Email Form */
.email-form {
  display: flex;
  max-width: 480px;
  margin: 0 auto;
  border-radius: var(--border-radius-full);
  overflow: hidden;
  border: 1px solid var(--color-input-border);
  background: var(--color-input-bg);
}

.email-form__input {
  flex: 1;
  padding: 1rem 1.5rem;
  background: transparent;
  border: none;
  color: var(--color-text-white);
  font-family: var(--font-family);
  font-size: 0.9375rem;
  outline: none;
  min-width: 0;
}

.email-form__input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.email-form__btn {
  padding: 1rem 1.75rem;
  background: var(--color-accent-lime);
  color: #000;
  font-family: var(--font-family);
  font-weight: 600;
  font-size: 0.9375rem;
  border: none;
  cursor: pointer;
  transition: background var(--transition);
  white-space: nowrap;
}

.email-form__btn:hover {
  background: var(--color-accent-lime-hover);
}

.email-form__btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Form Success */
.form-success {
  display: none;
  text-align: center;
  padding: 1rem;
}

.form-success.is-visible {
  display: block;
}

.form-success p {
  color: var(--color-accent-lime);
  font-weight: 600;
  font-size: 1.125rem;
}

.form-success span {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}


/* ======================== */
/* 6. NAVIGATION             */
/* ======================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}

.nav.scrolled {
  background: rgba(17, 24, 39, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  padding: 0.75rem 0;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.nav__logo {
  display: flex;
  align-items: center;
}

.nav__logo-dark {
  display: block;
}

.nav__logo-light {
  display: none;
}

.nav.scrolled .nav__logo-dark {
  display: none;
}

.nav.scrolled .nav__logo-light {
  display: block;
}


/* ======================== */
/* 7. HERO                   */
/* ======================== */

.hero {
  background: var(--color-bg-light);
  padding: 8rem 0 5rem;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

.hero__text {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero__subtitle {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  max-width: 520px;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.hero__proof {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.hero__image-wrap {
  overflow: hidden;
  border-radius: var(--border-radius-lg);
}

.hero__image {
  border-radius: var(--border-radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
  width: 100%;
  height: auto;
}


/* ======================== */
/* 8. TRUST BAR              */
/* ======================== */

.trust {
  padding: 3rem 0;
  background: var(--color-bg-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.trust__label {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.trust__logos {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2.5rem;
}

.trust__logo {
  height: 48px;
  width: auto;
  filter: grayscale(100%);
  opacity: 0.45;
  transition: filter var(--transition), opacity var(--transition);
}

.trust__logo:hover {
  filter: grayscale(0%);
  opacity: 1;
}


/* ======================== */
/* 9. PROBLEM SECTION        */
/* ======================== */

.problem {
  background: var(--color-bg-dark);
  text-align: center;
}

.problem h2 {
  color: var(--color-text-white);
  margin-bottom: 1rem;
}

.problem__answer {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-accent-lime);
  margin-bottom: 1.5rem;
}

.problem__body {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto 1.5rem;
}

.problem__kicker {
  color: var(--color-text-white);
  font-size: 1.125rem;
  font-weight: 600;
}


/* ======================== */
/* 10. HOW IT WORKS          */
/* ======================== */

.how-it-works {
  background: var(--color-bg-light);
}

.how-it-works__header {
  text-align: center;
  margin-bottom: 3rem;
}

.how-it-works__header .eyebrow {
  margin-bottom: 0.75rem;
}

.how-it-works__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.how-it-works .card h3 {
  margin: 0;
}


/* ======================== */
/* 11. BENEFITS              */
/* ======================== */

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

.benefits__header {
  text-align: center;
  margin-bottom: 3rem;
}

.benefits__header h2 {
  color: var(--color-text-white);
}

.benefits__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}


/* ======================== */
/* 12. SOCIAL PROOF          */
/* ======================== */

.social-proof {
  background: var(--color-bg-light);
}

.social-proof__header {
  text-align: center;
  margin-bottom: 3rem;
}

.social-proof__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}


/* ======================== */
/* 13. FINAL CTA             */
/* ======================== */

.final-cta {
  background: var(--color-bg-dark);
  text-align: center;
  padding: 6rem 0;
}

.final-cta h2 {
  color: var(--color-text-white);
  margin-bottom: 1rem;
}

.final-cta__body {
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto 2.5rem;
}

.final-cta__micro {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 1rem;
}


/* ======================== */
/* 14. FOOTER                */
/* ======================== */

.footer {
  background: var(--color-bg-darker);
  padding: 2.5rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
}

.footer__logo {
  width: 75px;
  height: 24px;
}

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

.footer__links {
  display: flex;
  gap: 1.5rem;
}

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

.footer__links a:hover {
  color: var(--color-text-white);
}


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

/* Tablet */
@media (min-width: 768px) {
  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.25rem;
  }

  .section-padding {
    padding: 6rem 0;
  }

  .how-it-works__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }

  .benefits__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem 3rem;
  }

  .social-proof__stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }

  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
    margin: 0 auto;
  }

  .footer__left {
    display: flex;
    align-items: center;
    gap: 1.5rem;
  }
}

/* Desktop */
@media (min-width: 1024px) {
  h1 {
    font-size: 3.25rem;
  }

  .hero {
    padding: 10rem 0 6rem;
  }

  .hero__inner {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
  }

  .problem__answer {
    font-size: 2rem;
  }

  .stat-block__number {
    font-size: 4rem;
  }

  .final-cta {
    padding: 8rem 0;
  }
}

/* Small mobile */
@media (max-width: 640px) {
  .email-form {
    flex-direction: column;
    border-radius: var(--border-radius);
  }

  .email-form__input {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--color-input-border);
  }

  .email-form__btn {
    padding: 1rem;
    border-radius: 0;
  }

  .trust__logos {
    gap: 1.5rem 2rem;
  }

  .trust__logo {
    height: 22px;
  }
}