/* WithTheFlow marketing landing page — literary mobile style */
:root {
  --bg-color: #ffffff;
  --bg-warm: #f5f5f5;
  --text-primary: #0a0a0a;
  --text-secondary: #737373;
  --text-muted: #a3a3a3;
  --accent: #0a0a0a;
  --accent-light: #f5f5f5;
  --accent-dark: #0a0a0a;
  --border: #e5e5e5;
  --positive: #00ba7c;
  --font-serif: "IBM Plex Sans", sans-serif;
  --font-display: "IBM Plex Sans", sans-serif;
  --font-sans: "IBM Plex Sans", sans-serif;
}

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

body {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text-primary);
  background: #ffffff;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  padding: 32px 0;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: cover;
}

/* Hero */
.hero {
  padding: 80px 0 120px;
  text-align: center;
}

.hero-content {
  max-width: 720px;
  margin: 0 auto;
}

.eyebrow {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-secondary);
  margin: 0 0 20px;
}

.headline {
  font-family: var(--font-display);
  font-size: clamp(36px, 5.5vw, 56px);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
  color: var(--text-primary);
}

.subheadline {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin: 0 0 40px;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 12px;
  text-decoration: none;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.btn-primary {
  background-color: var(--accent-dark);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: #171717;
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border);
}

.btn-secondary:hover {
  background-color: var(--bg-warm);
  transform: translateY(-2px);
}

/* Sections */
.demo,
.testimonials,
.how-it-works,
.download {
  padding: 100px 0;
  border-top: 1px solid var(--border);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 500;
  text-align: center;
  margin: 0 0 16px;
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 17px;
  text-align: center;
  color: var(--text-secondary);
  margin: 0 0 56px;
}

/* Demo grid */
.demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.demo-card {
  position: relative;
  padding: 32px 24px;
  border-radius: 16px;
  background: var(--bg-warm);
  border: 1px solid var(--border);
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.demo-card.ig-reel,
.demo-card.yt-short,
.demo-card.rednote,
.demo-card.fb-reel {
  aspect-ratio: 9 / 16;
}

.demo-card.pinterest {
  aspect-ratio: 2 / 3;
}

.demo-label {
  position: absolute;
  top: 16px;
  left: 16px;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.demo-text {
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.35;
  color: var(--text-primary);
  margin: 0;
}

/* Testimonials */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.testimonial {
  margin: 0;
  padding: 28px;
  border-radius: 16px;
  background: #FFFFFF;
  border: 1px solid var(--border);
}

.testimonial p {
  font-size: 17px;
  line-height: 1.6;
  color: var(--text-primary);
  margin: 0 0 20px;
}

.testimonial cite {
  font-family: var(--font-sans);
  font-size: 14px;
  font-style: normal;
  color: var(--text-muted);
}

/* How it works */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 40px;
}

.step {
  text-align: center;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 20px;
}

.step h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 500;
  margin: 0 0 12px;
}

.step p {
  color: var(--text-secondary);
  margin: 0;
}

/* Download */
.download {
  text-align: center;
}

.download-note {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 16px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  text-align: center;
}

.site-footer p {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0;
}

@media (min-width: 640px) {
  .hero {
    padding: 120px 0 160px;
  }

  .demo,
  .testimonials,
  .how-it-works,
  .download {
    padding: 120px 0;
  }
}