/* ============================================
   FormAPI — Styles (Redesigned)
   ============================================ */

:root {
  --color-primary: #2B5C8A;
  --color-primary-dark: #1E3A5F;
  --color-primary-light: #E8F0F8;
  --color-accent: #34B87A;
  --color-accent-dark: #2A9A65;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-border: #e2e8f0;
  --color-code-bg: #0f172a;
  --color-code-text: #e2e8f0;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans JP", sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", Consolas, monospace;
  --max-width: 1080px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  font-size: 16px;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ---- Header ---- */
.header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  display: flex;
  align-items: center;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  letter-spacing: -0.02em;
}

.logo:hover {
  text-decoration: none;
  color: var(--color-primary);
}

.nav {
  display: flex;
  gap: 24px;
}

.nav a {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.15s ease;
  cursor: pointer;
  border: none;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-cta {
  background: var(--color-accent);
  color: #fff;
}

.btn-cta:hover {
  background: var(--color-accent-dark);
}

.btn-outline {
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}

.btn-disabled {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  background: var(--color-border);
  color: var(--color-text-muted);
  cursor: not-allowed;
}

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

.hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: var(--color-primary-dark);
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  line-height: 1.8;
}

.code-block {
  margin: 48px auto 0;
  max-width: 640px;
  background: var(--color-code-bg);
  border-radius: 12px;
  padding: 24px 28px;
  text-align: left;
  overflow-x: auto;
}

.code-block pre {
  margin: 0;
}

.code-block code {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--color-code-text);
  line-height: 1.7;
}

/* ---- 3 Steps ---- */
.steps {
  padding: 80px 0;
  background: var(--color-primary-light);
}

.steps h2 {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 48px;
  color: var(--color-primary-dark);
}

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

.step-card {
  text-align: center;
  padding: 32px 24px;
}

.step-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.step-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-text);
}

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

/* ---- Features ---- */
.features {
  padding: 80px 0;
  background: var(--color-bg-alt);
}

.features h2,
.pricing h2 {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 48px;
  color: var(--color-primary-dark);
}

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

.feature-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 32px 28px;
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

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

/* ---- Demo ---- */
.demo {
  padding: 80px 0;
}

.demo h2 {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-primary-dark);
}

.demo-desc {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin-bottom: 40px;
}

.demo-area {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 560px;
  margin: 0 auto;
}

.demo-form-wrapper,
.demo-response-wrapper {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 28px;
}

.demo-form-wrapper h3,
.demo-response-wrapper h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--color-primary);
}

.demo-form {
  display: flex;
  flex-direction: column;
}

.demo-form label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}

.demo-form input,
.demo-form textarea {
  display: block;
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 1rem;
  margin-bottom: 16px;
  background: var(--color-bg);
  color: var(--color-text);
  box-sizing: border-box;
}

.demo-form textarea {
  resize: vertical;
  min-height: 80px;
}

.demo-form input:focus,
.demo-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.demo-form .btn {
  width: 100%;
  text-align: center;
  margin-top: 4px;
  padding: 14px;
  font-size: 1rem;
}

.demo-notice {
  margin-top: 16px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  text-align: center;
}

.demo-response {
  background: var(--color-code-bg);
  color: var(--color-code-text);
  border-radius: 8px;
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
  overflow-x: auto;
  white-space: pre-wrap;
  min-height: 120px;
  margin: 0;
}

/* ---- Pricing ---- */
.pricing {
  padding: 80px 0;
  background: var(--color-bg-alt);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 700px;
  margin: 0 auto;
}

.pricing-card {
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 36px 32px;
  text-align: center;
  position: relative;
  background: var(--color-bg);
}

.pricing-card-pro {
  border-color: var(--color-primary);
  border-width: 2px;
}

.badge {
  position: absolute;
  top: -12px;
  right: 20px;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
}

.pricing-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.price {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.pricing-card ul {
  list-style: none;
  margin-bottom: 28px;
  text-align: left;
}

.pricing-card li {
  padding: 6px 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.pricing-card li::before {
  content: "\2713 ";
  color: var(--color-accent);
  font-weight: 700;
  margin-right: 6px;
}

/* ---- Trust ---- */
.trust {
  padding: 60px 0;
  text-align: center;
}

.trust h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-primary-dark);
}

.trust-stack {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.trust-badges {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.trust-badge {
  display: inline-block;
  padding: 8px 20px;
  border: 1px solid var(--color-border);
  border-radius: 24px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  background: var(--color-bg-alt);
}

/* ---- FAQ ---- */
.faq {
  padding: 80px 0;
  background: var(--color-bg-alt);
}

.faq h2 {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 48px;
  color: var(--color-primary-dark);
}

.faq-list {
  max-width: 700px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 12px;
  background: var(--color-bg);
}

.faq-item summary {
  padding: 16px 20px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::before {
  content: "+";
  display: inline-block;
  width: 20px;
  font-weight: 700;
  color: var(--color-primary);
  margin-right: 8px;
}

.faq-item[open] summary::before {
  content: "\2212";
}

.faq-item p {
  padding: 0 20px 16px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

.faq-item code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  padding: 2px 6px;
  border-radius: 4px;
}

/* ---- Final CTA ---- */
.final-cta {
  padding: 80px 0;
  text-align: center;
  background: var(--color-primary-dark);
  color: #fff;
}

.final-cta h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.final-cta p {
  font-size: 1.1rem;
  opacity: 0.85;
  margin-bottom: 32px;
}

.final-cta .btn-cta {
  font-size: 1.1rem;
  padding: 14px 36px;
}

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

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

.footer-inner p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-nav {
  display: flex;
  gap: 20px;
}

.footer-nav a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

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

/* ============================================
   Docs Styles
   ============================================ */
.docs-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  padding: 40px 0 80px;
}

.docs-sidebar {
  position: sticky;
  top: 80px;
  align-self: start;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}

.docs-sidebar ul {
  list-style: none;
}

.docs-sidebar > ul > li {
  margin-bottom: 20px;
}

.docs-sidebar .sidebar-heading {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.docs-sidebar li a {
  display: block;
  padding: 4px 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.docs-sidebar li a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.docs-content {
  min-width: 0;
}

.docs-content h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.docs-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 56px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.docs-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-top: 32px;
  margin-bottom: 12px;
}

.docs-content p {
  margin-bottom: 16px;
  color: var(--color-text);
  line-height: 1.8;
}

.docs-content ul,
.docs-content ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

.docs-content li {
  margin-bottom: 6px;
  line-height: 1.7;
}

.docs-content code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  padding: 2px 6px;
  border-radius: 4px;
}

.docs-content pre {
  background: var(--color-code-bg);
  border-radius: 8px;
  padding: 20px 24px;
  overflow-x: auto;
  margin-bottom: 20px;
}

.docs-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--color-code-text);
  font-size: 0.85rem;
  line-height: 1.7;
}

.endpoint {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 16px;
}

.endpoint .method {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  margin-right: 8px;
}

.method-get { background: #dcfce7; color: #166534; }
.method-post { background: #dbeafe; color: #1e40af; }
.method-patch { background: #fef3c7; color: #92400e; }
.method-delete { background: #fee2e2; color: #991b1b; }

.endpoint .path {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
}

.endpoint .desc {
  margin-top: 6px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.callout {
  background: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  padding: 16px 20px;
  border-radius: 0 8px 8px 0;
  margin-bottom: 20px;
}

.callout p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 1.75rem;
  }

  .hero-sub {
    font-size: 1rem;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

  .demo-area {
    max-width: 100%;
  }

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

  .trust-badges {
    flex-direction: column;
    align-items: center;
  }

  .final-cta h2 {
    font-size: 1.5rem;
  }

  .docs-layout {
    grid-template-columns: 1fr;
  }

  .docs-sidebar {
    position: static;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 24px;
    margin-bottom: 24px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}