/* FieldCraft Studio — Modern, clean, warm */

:root {
  --color-bg: #FAFAF8;
  --color-bg-alt: #F2F0EC;
  --color-text: #1A1A1A;
  --color-text-secondary: #5A5A58;
  --color-accent: #2C2C2C;
  --color-accent-warm: #B8845C;
  --color-accent-warm-light: #D4A97A;
  --color-border: #E2DFD9;
  --color-white: #FFFFFF;
  --color-card: #FFFFFF;

  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --max-width: 1120px;
  --max-content: 720px;
  --spacing-section: clamp(80px, 10vw, 140px);
  --radius: 12px;
  --radius-sm: 8px;
}

/* 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-sans);
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.content-narrow {
  max-width: var(--max-content);
  margin: 0 auto;
  text-align: center;
}

.section {
  padding: var(--spacing-section) 0;
}

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

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

/* Typography */
h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin-bottom: 20px; }
h3 { font-size: 1.25rem; margin-bottom: 12px; }

.text-lg {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.section-sub {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 0;
  transition: all 0.3s ease;
}

.nav.scrolled {
  background: rgba(250, 250, 248, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: 14px 0;
}

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

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

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

.nav-link {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--color-text);
}

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

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: 0.2s;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 50px;
  background: var(--color-accent);
  color: var(--color-white);
  border: 2px solid var(--color-accent);
  cursor: pointer;
  transition: all 0.25s ease;
  text-decoration: none;
}

.btn:hover {
  background: var(--color-accent-warm);
  border-color: var(--color-accent-warm);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-outline:hover {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn-sm {
  padding: 10px 24px;
  font-size: 0.875rem;
}

/* Hero */
.hero {
  padding: 180px 0 var(--spacing-section);
  text-align: center;
}

.hero-title {
  max-width: 800px;
  margin: 0 auto 24px;
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

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

.step-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px 32px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.step-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

.step-number {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent-warm-light);
  margin-bottom: 16px;
  line-height: 1;
}

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

/* Deliverables */
.deliverables-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}

.deliverable {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 24px;
}

.deliverable-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-warm);
  color: white;
  border-radius: 50%;
  font-size: 0.85rem;
  font-weight: 700;
  margin-top: 2px;
}

.deliverable p {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.6;
}

/* Case Studies */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.case-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

.case-card blockquote {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 500;
  font-style: italic;
  color: var(--color-accent-warm);
  margin-bottom: 20px;
  line-height: 1.5;
}

.case-card h3 {
  font-size: 1rem;
  font-family: var(--font-sans);
  font-weight: 600;
  margin-bottom: 12px;
}

.case-card p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.case-tags {
  display: flex;
  gap: 8px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.tag {
  display: inline-block;
  padding: 4px 14px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-accent-warm);
  border: 1px solid var(--color-accent-warm-light);
  border-radius: 50px;
}

/* About CTA */
.about-cta {
  margin-top: 36px;
}

.content-narrow p + p {
  margin-top: 16px;
}

/* FAQ */
.faq-list {
  text-align: left;
  margin-top: 40px;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 20px 0;
}

.faq-item summary {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--color-text-secondary);
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  margin-top: 12px;
  color: var(--color-text-secondary);
  max-width: 600px;
}

/* CTA Section */
.section-cta {
  background: var(--color-accent);
  color: var(--color-white);
  text-align: center;
}

.section-cta h2 {
  color: var(--color-white);
}

.section-cta .text-lg {
  color: rgba(255, 255, 255, 0.75);
  max-width: 500px;
  margin: 0 auto 36px;
}

.section-cta .btn {
  background: var(--color-accent-warm);
  border-color: var(--color-accent-warm);
  color: var(--color-white);
}

.section-cta .btn:hover {
  background: var(--color-accent-warm-light);
  border-color: var(--color-accent-warm-light);
}

.section-cta .btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--color-white);
}

.section-cta .btn-outline:hover {
  background: var(--color-white);
  border-color: var(--color-white);
  color: var(--color-accent);
}

/* Footer */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

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

.footer p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--color-text);
}

/* Responsive */
@media (max-width: 768px) {
  body { font-size: 16px; }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 24px;
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

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

  .hero { padding: 140px 0 80px; }

  .steps-grid,
  .cases-grid {
    grid-template-columns: 1fr;
  }

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

  .hero-ctas {
    flex-direction: column;
    align-items: center;
  }

  .btn { width: 100%; max-width: 320px; }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero { padding: 120px 0 60px; }

  .step-card,
  .case-card {
    padding: 28px 20px;
  }

  .deliverable {
    padding: 18px;
  }
}