/* ============================================================
   RevisitIQ — Styles
   Marketing Site
   ============================================================ */

/* --- Tokens --- */
:root {
  --teal: #0F7B6C;
  --teal-dark: #0A5C51;
  --teal-light: #14A890;
  --blue: #2563EB;
  --blue-dark: #1D4ED8;
  --slate: #475569;
  --mint: #F0FAF8;
  --mint-dark: #D5F0EC;
  --white: #FFFFFF;
  --gray-50: #F8FAFC;
  --gray-100: #F1F5F9;
  --gray-200: #E2E8F0;
  --gray-600: #64748B;
  --gray-800: #1E293B;
  --gray-900: #0F172A;

  --font-heading: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --max-width: 960px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  --radius: 6px;
  --radius-lg: 10px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
}

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--gray-800);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--teal-light);
  outline-offset: 2px;
}

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section-heading {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  color: var(--gray-900);
  text-align: center;
  margin-bottom: var(--space-lg);
}

.section-intro {
  font-size: 1.05rem;
  color: var(--gray-600);
  text-align: center;
  max-width: 620px;
  margin: calc(-1 * var(--space-sm)) auto var(--space-lg);
  line-height: 1.65;
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  padding: var(--space-sm) 0;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  text-decoration: none;
  color: var(--gray-900);
}
.logo-icon { font-size: 1.4rem; }
.logo-text {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.header-login {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-800);
  text-decoration: none;
  padding: 0.5rem 0.6rem;
}
.header-login:hover {
  color: var(--teal);
  text-decoration: none;
}
.header-cta {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--white);
  background: var(--teal);
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.2s;
}
.header-cta:hover {
  background: var(--teal-dark);
  text-decoration: none;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  padding: 0.85rem 1.8rem;
  border-radius: var(--radius);
  text-decoration: none;
  text-align: center;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
  cursor: pointer;
  border: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  color: var(--white);
  background: var(--teal);
  box-shadow: 0 2px 8px rgba(15,123,108,0.3);
}
.btn-primary:hover {
  background: var(--teal-dark);
  box-shadow: 0 4px 16px rgba(15,123,108,0.35);
}

.btn-secondary {
  color: var(--teal);
  background: transparent;
  border: 2px solid var(--teal);
}
.btn-secondary:hover {
  background: var(--teal);
  color: var(--white);
}

/* --- Hero --- */
.hero {
  padding: var(--space-2xl) 0 var(--space-xl);
  background: linear-gradient(170deg, var(--mint) 0%, var(--white) 60%);
  text-align: center;
}
.hero-inner { max-width: 680px; margin: 0 auto; }
.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
  background: rgba(15,123,108,0.08);
  padding: 0.3rem 0.9rem;
  border-radius: 100px;
  margin-bottom: var(--space-sm);
}
.hero-headline {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5.5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--gray-900);
  margin-bottom: var(--space-md);
}
.hero-sub {
  font-size: 1.1rem;
  color: var(--gray-600);
  max-width: 560px;
  margin: 0 auto var(--space-lg);
  line-height: 1.7;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  margin-bottom: var(--space-sm);
}
.hero-note {
  font-size: 0.82rem;
  color: var(--gray-600);
  margin-top: var(--space-xs);
}

/* --- Problem Section --- */
.problems {
  padding: var(--space-xl) 0;
  background: var(--white);
}
.problems-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}
.problem-card {
  background: var(--gray-50);
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
}
.problem-card h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.4rem;
}
.problem-card p {
  font-size: 0.92rem;
  color: var(--gray-600);
  line-height: 1.55;
  margin: 0;
}

/* --- How It Works --- */
.how-it-works {
  padding: var(--space-xl) 0;
  background: var(--gray-50);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}
.step-card {
  text-align: center;
  padding: var(--space-md);
}
.step-card .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.8rem;
  height: 2.8rem;
  border-radius: 50%;
  background: var(--mint);
  color: var(--teal);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  border: 2px solid var(--teal);
}
.step-card h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.step-card p {
  font-size: 0.92rem;
  color: var(--gray-600);
  max-width: 280px;
  margin: 0 auto;
  line-height: 1.55;
}

/* --- Who It's For --- */
.built-for {
  padding: var(--space-xl) 0;
  background: var(--white);
}
.built-for-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}
.built-for-item {
  text-align: center;
  padding: var(--space-sm);
}
.built-for-icon {
  font-size: 1.8rem;
  margin-bottom: var(--space-xs);
}
.built-for-item h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.built-for-item p {
  font-size: 0.92rem;
  color: var(--gray-600);
  max-width: 280px;
  margin: 0 auto;
  line-height: 1.55;
}
.built-for-note {
  font-size: 0.88rem;
  font-style: italic;
  color: var(--gray-600);
  text-align: center;
  margin-top: var(--space-lg);
}

/* --- Workaround Section --- */
.workaround {
  padding: var(--space-xl) 0;
  background: var(--gray-50);
}
.workaround-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}
.workaround-card {
  background: var(--white);
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
}
.workaround-card h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.4rem;
}
.workaround-card p {
  font-size: 0.92rem;
  color: var(--gray-600);
  line-height: 1.55;
  margin: 0;
}
.workaround-bottom {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-800);
  text-align: center;
  margin-top: var(--space-lg);
  max-width: 580px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Credibility --- */
.credibility {
  padding: var(--space-lg) 0;
  background: var(--white);
  border-top: 1px solid var(--gray-200);
}
.credibility-note {
  font-size: 0.88rem;
  font-style: italic;
  color: var(--gray-600);
  text-align: center;
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.6;
}

/* --- Final CTA --- */
.final-cta {
  padding: var(--space-2xl) 0;
  text-align: center;
  background: linear-gradient(170deg, var(--white) 0%, var(--mint) 100%);
}
.final-cta h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 4.5vw, 2.4rem);
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: var(--space-sm);
}
.final-cta p {
  font-size: 1.05rem;
  color: var(--gray-600);
  margin-bottom: var(--space-lg);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Footer --- */
.site-footer {
  padding: var(--space-lg) 0;
  background: var(--gray-900);
  color: var(--gray-200);
  text-align: center;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}
.footer-brand {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
}
.footer-contact { font-size: 0.88rem; }
.footer-contact a { color: var(--teal-light); }
.footer-contact a:hover { color: var(--mint); }
.footer-legal { font-size: 0.78rem; color: var(--gray-600); }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 768px) {
  .problems-grid,
  .workaround-grid {
    grid-template-columns: 1fr;
  }
  .steps-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  .built-for-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  .hero {
    padding: var(--space-xl) 0 var(--space-lg);
  }
  .hero-ctas {
    flex-direction: column;
    align-items: center;
  }
  .hero-ctas .btn {
    width: 100%;
    max-width: 320px;
  }
  .header-cta {
    font-size: 0.78rem;
    padding: 0.45rem 0.9rem;
  }
  .header-login {
    font-size: 0.78rem;
    padding: 0.45rem 0.5rem;
  }
}

@media (max-width: 480px) {
  .hero-headline {
    font-size: 1.7rem;
  }
  .section-heading {
    font-size: 1.4rem;
  }
}

/* --- Print --- */
@media print {
  .site-header, .hero-ctas, .header-cta, .header-login, .final-cta {
    display: none;
  }
}