/* ========================================
   Cardboard Social LLC — Business Site
   ======================================== */

:root {
  --color-primary: #b8622e;
  --color-primary-dark: #2c2017;
  --color-primary-light: #d4854a;
  --color-background: #faf6f1;
  --color-surface: #ffffff;
  --color-accent: #5a7c65;
  --color-accent-light: #8aab94;
  --color-text: #2c2017;
  --color-text-secondary: #6b5e54;
  --color-text-inverse: #ffffff;
  --color-border: #e5ddd4;

  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --max-width: 1100px;
  --nav-height: 60px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: var(--nav-height); }

body {
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-background);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ========================================
   Nav
   ======================================== */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  height: var(--nav-height);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.15s;
}

.nav-links a:hover { color: var(--color-primary); }

.nav-cta {
  background: var(--color-primary);
  color: var(--color-text-inverse) !important;
  padding: 8px 18px;
  border-radius: 6px;
  font-weight: 600 !important;
  transition: background 0.15s !important;
}

.nav-cta:hover { background: var(--color-primary-light) !important; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

/* ========================================
   Hero
   ======================================== */

.hero {
  padding: 80px 0 60px;
  text-align: center;
}

.hero-inner { max-width: 700px; margin: 0 auto; }

.hero h1 {
  font-size: 40px;
  line-height: 1.15;
  color: var(--color-primary-dark);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-sub {
  font-size: 18px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ========================================
   About
   ======================================== */

.about {
  padding: 80px 0;
  background: var(--color-surface);
}

.section-title {
  text-align: center;
  font-size: 30px;
  color: var(--color-primary-dark);
  margin-bottom: 48px;
  letter-spacing: -0.3px;
}

.section-title--light { color: var(--color-text-inverse); }

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.about-point {
  padding: 32px 24px;
  background: var(--color-background);
  border-radius: 12px;
  transition: transform 0.15s;
}

.about-point:hover { transform: translateY(-3px); }

.about-point h3 {
  font-size: 18px;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.about-point p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* ========================================
   Products
   ======================================== */

.products {
  padding: 80px 0;
  background: var(--color-background);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 800px;
  margin: 0 auto;
}

.product-card {
  display: block;
  padding: 40px 32px;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: 16px;
  transition: transform 0.15s, border-color 0.15s;
  text-decoration: none;
}

.product-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary-light);
}

.product-icon {
  font-size: 40px;
  margin-bottom: 16px;
}

.product-icon-img {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  margin-bottom: 16px;
}

.product-card h3 {
  font-size: 22px;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
}

.product-card p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: 16px;
}

.product-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

.product-link--soon {
  color: var(--color-accent);
}

.product-privacy {
  display: block;
  margin-top: 8px;
  font-size: 13px;
}

.product-privacy a {
  color: var(--color-text-secondary);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.15s;
}

.product-privacy a:hover {
  color: var(--color-primary);
}

/* ========================================
   Contact
   ======================================== */

.contact {
  padding: 80px 0;
  background: var(--color-primary-dark);
  color: var(--color-text-inverse);
}

.contact-inner {
  text-align: center;
  max-width: 500px;
  margin: 0 auto;
}

.contact-inner p {
  font-size: 17px;
  opacity: 0.85;
  margin-bottom: 24px;
  line-height: 1.7;
}

.contact-email {
  display: inline-block;
  padding: 14px 32px;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-size: 16px;
  font-weight: 600;
  border-radius: 8px;
  transition: background 0.15s, transform 0.1s;
}

.contact-email:hover { background: var(--color-primary-light); }
.contact-email:active { transform: scale(0.97); }

/* ========================================
   Footer
   ======================================== */

.footer {
  padding: 28px 0;
  background: var(--color-primary-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
  text-align: center;
}

.footer a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer a:hover { color: #fff; }

/* ========================================
   Mobile (< 768px)
   ======================================== */

@media (max-width: 767px) {
  .nav-toggle { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 8px 0;
  }

  .nav-links.open { display: flex; }

  .nav-links li { width: 100%; }

  .nav-links a {
    display: block;
    padding: 14px 20px;
    font-size: 16px;
  }

  .nav-cta {
    margin: 8px 20px;
    text-align: center;
    border-radius: 6px;
  }

  .hero { padding: 48px 0 40px; }

  .hero h1 { font-size: 30px; }

  .hero-sub { font-size: 16px; }

  .section-title { font-size: 24px; margin-bottom: 32px; }

  .about-grid { grid-template-columns: 1fr; gap: 20px; }

  .product-grid { grid-template-columns: 1fr; gap: 20px; }

  .product-card { padding: 32px 24px; }
}

/* Tablet (768-1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
  .about-grid { grid-template-columns: repeat(2, 1fr); }
}