/* ==========================================================================
   KAWAKI STUDIOS — PHASE 1 SEO ARCHITECTURE STYLESHEET
   Clean, bespoke editorial typography and layout inspired by Volume.in & Dieter Rams.
   ========================================================================== */

:root {
  --seo-bg: #FFFFFF;
  --seo-surface: #FAFAFA;
  --seo-border: rgba(0, 0, 0, 0.08);
  --seo-border-strong: rgba(0, 0, 0, 0.15);
  --seo-text-primary: #111111;
  --seo-text-secondary: #555555;
  --seo-text-muted: #767676;
  --seo-accent: #ea580c;
  --seo-accent-hover: #c2410c;
  --seo-font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --seo-font-mono: "SF Mono", Monaco, Consolas, monospace;
}

body.seo-page-body {
  background-color: var(--seo-bg);
  color: var(--seo-text-primary);
  font-family: var(--seo-font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  margin: 0;
  padding: 0;
  padding-top: 110px;
}

.seo-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
  box-sizing: border-box;
}

/* Breadcrumbs */
.seo-breadcrumb-nav {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--seo-border);
  font-size: 0.85rem;
  color: var(--seo-text-muted);
}
.seo-breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.seo-breadcrumb-item a {
  color: var(--seo-text-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
}
.seo-breadcrumb-item a:hover {
  color: var(--seo-text-primary);
}
.seo-breadcrumb-sep {
  color: var(--seo-border-strong);
}
.seo-breadcrumb-item.active {
  color: var(--seo-text-primary);
  font-weight: 500;
}

/* Hero Section */
.seo-hero {
  padding: 5rem 0 4rem;
  border-bottom: 1px solid var(--seo-border);
}
.seo-badge-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.seo-badge {
  font-family: var(--seo-font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  background: var(--seo-surface);
  border: 1px solid var(--seo-border);
  color: var(--seo-text-secondary);
  font-weight: 600;
}
.seo-badge.accent {
  background: rgba(234, 88, 12, 0.08);
  border-color: rgba(234, 88, 12, 0.25);
  color: var(--seo-accent);
}
.seo-hero-title {
  font-size: clamp(2.25rem, 4.5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0 0 1.5rem 0;
  color: var(--seo-text-primary);
  max-width: 980px;
}
.seo-hero-desc {
  font-size: 1.15rem;
  color: var(--seo-text-secondary);
  line-height: 1.65;
  max-width: 820px;
  margin: 0 0 2.5rem 0;
}
.seo-hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.seo-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--seo-text-primary);
  color: #FFFFFF;
  padding: 0.85rem 1.75rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.seo-btn-primary:hover {
  background: var(--seo-accent);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(234, 88, 12, 0.25);
}
.seo-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--seo-surface);
  color: var(--seo-text-primary);
  padding: 0.85rem 1.75rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid var(--seo-border);
  transition: all 0.2s ease;
}
.seo-btn-secondary:hover {
  background: #EEEEEE;
  border-color: var(--seo-border-strong);
}

/* Section Framework */
.seo-section {
  padding: 5rem 0;
  border-bottom: 1px solid var(--seo-border);
}
.seo-section-tag {
  font-family: var(--seo-font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--seo-accent);
  margin-bottom: 0.75rem;
  display: block;
}
.seo-section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 750;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 1rem 0;
  color: var(--seo-text-primary);
}
.seo-section-desc {
  font-size: 1.05rem;
  color: var(--seo-text-secondary);
  max-width: 800px;
  margin: 0 0 3rem 0;
  line-height: 1.6;
}

/* Feature & Architecture Grids */
.seo-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}
.seo-grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 2rem;
}
.seo-card {
  background: var(--seo-surface);
  border: 1px solid var(--seo-border);
  border-radius: 16px;
  padding: 2.25rem;
  box-sizing: border-box;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.seo-card:hover {
  border-color: var(--seo-border-strong);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.04);
}
.seo-card-number {
  font-family: var(--seo-font-mono);
  font-size: 0.85rem;
  color: var(--seo-text-muted);
  margin-bottom: 1rem;
  font-weight: 600;
}
.seo-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 0.75rem 0;
  color: var(--seo-text-primary);
  letter-spacing: -0.01em;
}
.seo-card-body {
  font-size: 0.95rem;
  color: var(--seo-text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* Process Timeline */
.seo-process-timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}
.seo-process-step {
  padding: 1.75rem;
  background: #FFFFFF;
  border: 1px solid var(--seo-border);
  border-radius: 14px;
}
.seo-step-num {
  font-family: var(--seo-font-mono);
  font-size: 0.85rem;
  color: var(--seo-accent);
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.seo-step-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 0.5rem 0;
}
.seo-step-desc {
  font-size: 0.88rem;
  color: var(--seo-text-secondary);
  line-height: 1.55;
  margin: 0;
}

/* Case Studies Showcase */
.seo-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
}
.seo-case-card {
  border: 1px solid var(--seo-border);
  border-radius: 16px;
  overflow: hidden;
  background: #FFFFFF;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}
.seo-case-card:hover {
  border-color: var(--seo-border-strong);
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
}
.seo-case-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  background: var(--seo-surface);
  display: block;
}
.seo-case-content {
  padding: 1.75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.seo-case-tag {
  font-family: var(--seo-font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--seo-accent);
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.seo-case-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 0.5rem 0;
  color: var(--seo-text-primary);
}
.seo-case-desc {
  font-size: 0.9rem;
  color: var(--seo-text-secondary);
  line-height: 1.55;
  margin-bottom: 1.25rem;
  flex: 1;
}
.seo-case-link {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--seo-text-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.seo-case-card:hover .seo-case-link {
  color: var(--seo-accent);
}

/* FAQ Accordion */
.seo-faq-container {
  max-width: 900px;
}
.seo-faq-item {
  border-bottom: 1px solid var(--seo-border);
}
.seo-faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 1.75rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  cursor: pointer;
  font-family: inherit;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--seo-text-primary);
  line-height: 1.4;
}
.seo-faq-question:hover {
  color: var(--seo-accent);
}
.seo-faq-icon {
  font-family: var(--seo-font-mono);
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1;
  color: var(--seo-text-muted);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}
.seo-faq-item.active .seo-faq-icon {
  transform: rotate(45deg);
  color: var(--seo-accent);
}
.seo-faq-answer {
  display: none;
  padding-bottom: 1.75rem;
  font-size: 0.98rem;
  color: var(--seo-text-secondary);
  line-height: 1.65;
}
.seo-faq-item.active .seo-faq-answer {
  display: block;
}

/* Callout Box */
.seo-callout-box {
  background: var(--seo-surface);
  border-left: 3px solid var(--seo-accent);
  padding: 1.5rem 1.75rem;
  border-radius: 0 12px 12px 0;
  margin: 2rem 0;
}
.seo-callout-box p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--seo-text-secondary);
}

/* Conversion CTA Bar */
.seo-cta-section {
  padding: 6rem 0;
  background: #111111;
  color: #FFFFFF;
  text-align: center;
  border-radius: 24px;
  margin: 4rem 1.5rem;
}
.seo-cta-section .seo-section-tag {
  color: var(--seo-accent);
}
.seo-cta-section h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin: 0 0 1.25rem 0;
  color: #FFFFFF;
  letter-spacing: -0.02em;
}
.seo-cta-section p {
  font-size: 1.15rem;
  color: #A3A3A3;
  max-width: 680px;
  margin: 0 auto 2.5rem;
  line-height: 1.6;
}

@media (max-width: 768px) {
  body.seo-page-body {
    padding-top: 90px;
  }
  .seo-hero {
    padding: 3.5rem 0 2.5rem;
  }
  .seo-section {
    padding: 3.5rem 0;
  }
  .seo-cta-section {
    margin: 3rem 1rem;
    padding: 4rem 1.5rem;
    border-radius: 18px;
  }
  .seo-grid-2, .seo-grid-3 {
    grid-template-columns: 1fr;
  }
}