/* Delphra Developer API Marketing Website Stylesheet
 * Brand tokens extracted from live store at www.delphra.com (Horizon theme)
 */

:root {
  /* Typography */
  --font-heading: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --letter-spacing-sm: 0.06em;
  --letter-spacing-md: 0.13em;

  /* Colour scheme (Light) */
  --color-background: #FFFFFF;
  --color-foreground: #000000;
  --color-heading: #000000;
  --color-primary-muted: #666666;
  --color-primary-hover: #000000;
  --color-border: #E6E6E6;

  /* Buttons */
  --color-btn-primary-bg: #000000;
  --color-btn-primary-text: #FFFFFF;
  --color-btn-primary-hover: #383838;

  --color-btn-secondary-bg: #EFEFEF;
  --color-btn-secondary-text: #000000;
  --color-btn-secondary-hover: #DEDEDE;

  /* Inputs & Surfaces */
  --color-input-border: rgb(0 0 0 / 0.13);
  --color-input-hover-bg: #F5F5F5;
  --color-surface-quiet: #F5F5F5;
  --color-code-bg: #FAFAFA;
  --color-code-border: #E6E6E6;

  /* Status */
  --color-error: #8B0000;
  --color-success: #006400;

  /* Shape & Metrics */
  --style-border-radius-buttons-primary: 0px;
  --style-border-radius-buttons-secondary: 0px;
  --style-border-radius-inputs: 0px;
  --style-border-width-primary: 0px;
  --style-border-width-secondary: 1px;
  --button-text-case-primary: uppercase;
  --button-text-case-secondary: uppercase;
  --button-padding-inline: 24px;
  --button-padding-block: 16px;
  --minimum-touch-target: 44px;

  /* Focus Indicator (WCAG AA) */
  --focus-outline-width: 0.09375rem;
  --focus-outline-offset: 0.2em;

  /* Layout */
  --normal-page-width: 120rem;
  --narrow-page-width: 90rem;
  --max-width--body-normal: 50ch;
  --max-width--heading-narrow: 30ch;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1.0rem;
  line-height: 1.6;
  color: var(--color-foreground);
  background-color: var(--color-background);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
}

/* Typography Hierarchy */
h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 400;
  font-style: normal;
  color: var(--color-heading);
}

h1 {
  font-size: clamp(2.25rem, 4.8vw, 3.0rem);
  line-height: 1;
  letter-spacing: 0;
  max-width: var(--max-width--heading-narrow);
}

h2 {
  font-size: 2.0rem;
  line-height: 1.1;
  letter-spacing: 0;
}

h3 {
  font-size: 1.5rem;
  line-height: 1.2;
}

h4 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.5rem;
  line-height: 1.3;
  color: var(--color-heading);
}

h5, h6, .eyebrow {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.75rem;
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-md);
  color: var(--color-primary-muted);
}

p {
  font-size: 1.0rem;
  line-height: 1.6;
  color: var(--color-primary-muted);
}

.text-foreground {
  color: var(--color-foreground);
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25em;
  transition: color 0.15s ease;
}

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

:focus-visible {
  outline: var(--focus-outline-width) solid var(--color-foreground);
  outline-offset: var(--focus-outline-offset);
}

/* Container & Layout */
.container {
  width: 100%;
  max-width: var(--narrow-page-width);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.container-wide {
  width: 100%;
  max-width: var(--normal-page-width);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.hairline-divider {
  border: 0;
  border-top: 1px solid var(--color-border);
  width: 100%;
  margin: 0;
}

/* Header & Navigation */
.site-header {
  background-color: var(--color-background);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-wordmark {
  display: inline-flex;
  align-items: center;
}

.brand-wordmark img {
  height: 30px;
  width: auto;
  display: block;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-md);
  text-decoration: none;
  color: var(--color-primary-muted);
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--color-foreground);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  min-height: var(--minimum-touch-target);
  min-width: var(--minimum-touch-target);
}

.mobile-toggle svg {
  display: block;
  width: 24px;
  height: 24px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--minimum-touch-target);
  padding: var(--button-padding-block) var(--button-padding-inline);
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: var(--letter-spacing-md);
  text-decoration: none;
  cursor: pointer;
  border-radius: var(--style-border-radius-buttons-primary);
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-btn-primary-bg);
  color: var(--color-btn-primary-text);
  border: var(--style-border-width-primary) solid transparent;
  text-transform: var(--button-text-case-primary);
}

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

.btn-secondary {
  background-color: var(--color-btn-secondary-bg);
  color: var(--color-btn-secondary-text);
  border: var(--style-border-width-secondary) solid var(--color-border);
  text-transform: var(--button-text-case-secondary);
}

.btn-secondary:hover {
  background-color: var(--color-btn-secondary-hover);
  color: var(--color-btn-secondary-text);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

/* Hero Section */
.hero-section {
  padding-block: 5rem 6rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-subtext {
  font-size: 1.125rem;
  line-height: 1.6;
  max-width: var(--max-width--body-normal);
}

/* Code Panel */
.code-panel {
  background-color: var(--color-background);
  border: 1px solid var(--color-code-border);
  border-radius: 0;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.5;
}

.code-panel-header {
  padding: 0.75rem 1rem;
  background-color: var(--color-code-bg);
  border-bottom: 1px solid var(--color-code-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.code-panel-title {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-md);
  color: var(--color-primary-muted);
}

.code-panel-body {
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  color: #111111;
  background-color: var(--color-background);
}

.code-panel-body pre {
  margin: 0;
  font-family: inherit;
}

.code-token-verb { color: #006400; font-weight: 700; }
.code-token-header { color: #555555; }
.code-token-string { color: #222222; }
.code-token-key { color: #555555; }
.code-token-bool { color: #006400; }

.code-panel-divider {
  border: 0;
  border-top: 1px dashed var(--color-border);
  margin: 1rem 0;
}

/* Statistics Band */
.stats-band {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding-block: 3.5rem;
  background-color: var(--color-background);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  line-height: 1;
  color: var(--color-foreground);
}

.stat-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-md);
  color: var(--color-primary-muted);
}

/* Feature Grid */
.features-section {
  padding-block: 6rem;
}

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

.feature-card {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.feature-icon-wrapper {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-foreground);
}

.feature-icon-wrapper svg {
  width: 28px;
  height: 28px;
  stroke: currentColor;
  stroke-width: 1.25;
  fill: none;
}

.feature-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  line-height: 1.2;
}

.feature-copy {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-primary-muted);
}

/* Pricing Grid */
.pricing-section {
  padding-block: 6rem;
}

.section-header {
  text-align: center;
  max-width: 60ch;
  margin-inline: auto;
  margin-bottom: 4rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.pricing-card {
  border: 1px solid var(--color-border);
  border-radius: 0;
  padding: 2.5rem 1.75rem;
  background-color: var(--color-background);
  display: flex;
  flex-direction: column;
  position: relative;
}

.pricing-card.emphasized {
  border: 1px solid #000000;
}

.popular-tag {
  position: absolute;
  top: -12px;
  right: 1.5rem;
  background-color: #000000;
  color: #FFFFFF;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: var(--letter-spacing-md);
  text-transform: uppercase;
  padding: 4px 10px;
}

.tier-name {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.tier-price {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  line-height: 1;
  color: var(--color-foreground);
  margin-bottom: 0.25rem;
}

.tier-price-sub {
  font-size: 0.75rem;
  color: var(--color-primary-muted);
  margin-bottom: 1.5rem;
}

.tier-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  margin-bottom: 2rem;
  flex: 1 0 auto;
}

.tier-features li {
  font-size: 0.875rem;
  color: var(--color-foreground);
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.tier-features li::before {
  content: "—";
  color: var(--color-primary-muted);
}

.tier-overage {
  font-size: 0.8125rem;
  color: var(--color-primary-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 0.75rem;
  margin-top: auto;
  margin-bottom: 1.5rem;
}

/* Quiet CTA Band */
.cta-band {
  background-color: var(--color-surface-quiet);
  padding-block: 6rem;
  text-align: center;
}

.cta-inner {
  max-width: 50ch;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

/* Forms */
.form-card {
  border: 1px solid var(--color-border);
  padding: 3rem;
  max-width: 650px;
  margin-inline: auto;
  background-color: var(--color-background);
}

.form-group {
  margin-bottom: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-md);
  color: var(--color-foreground);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--color-foreground);
  background-color: var(--color-background);
  border: 1px solid var(--color-input-border);
  border-radius: var(--style-border-radius-inputs);
  transition: background-color 0.15s ease, border-color 0.15s ease;
  min-height: var(--minimum-touch-target);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  background-color: var(--color-input-hover-bg);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: var(--focus-outline-width) solid var(--color-foreground);
  outline-offset: var(--focus-outline-offset);
  background-color: var(--color-background);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* Documentation Layout */
.docs-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 4rem;
  padding-block: 4rem 6rem;
}

.docs-sidebar {
  position: sticky;
  top: 100px;
  height: fit-content;
}

.docs-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.docs-nav a {
  font-size: 0.875rem;
  color: var(--color-primary-muted);
  text-decoration: none;
}

.docs-nav a:hover {
  color: var(--color-foreground);
}

.docs-content {
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
  max-width: 800px;
}

.docs-section {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* Data Tables */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  margin-top: 1rem;
}

.data-table th,
.data-table td {
  padding: 1rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.data-table th {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-md);
  color: var(--color-primary-muted);
  background-color: var(--color-surface-quiet);
}

.data-table td code {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  background-color: var(--color-code-bg);
  padding: 2px 6px;
  border: 1px solid var(--color-border);
}

/* Legal Notice Banner */
.legal-banner {
  padding: 1.25rem 1.5rem;
  border: 1px solid #000000;
  background-color: var(--color-surface-quiet);
  margin-bottom: 2.5rem;
}

.legal-banner p {
  color: var(--color-foreground);
  font-size: 0.875rem;
  line-height: 1.5;
}

/* Footer */
.site-footer {
  background-color: var(--color-background);
  border-top: 1px solid var(--color-border);
  padding-block: 5rem 4rem;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-heading {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-md);
  color: var(--color-heading);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  font-size: 0.8125rem;
  color: var(--color-primary-muted);
  text-decoration: none;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--color-border);
  padding-top: 2rem;
  font-size: 0.75rem;
  color: var(--color-primary-muted);
}

/* Responsive Breakpoints (matching Horizon theme: 40em, 750px, 60em) */
@media (max-width: 60em) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .docs-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .docs-sidebar {
    position: static;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 1.5rem;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 750px) {
  .features-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .header-btn {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .site-nav {
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    padding: 2rem 1.5rem;
    flex-direction: column;
    align-items: flex-start;
    display: none;
  }
  .site-nav.is-active {
    display: flex;
  }
  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
    width: 100%;
  }
}

@media (max-width: 40em) {
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }
  .btn-group {
    flex-direction: column;
    align-items: stretch;
  }
  .btn {
    width: 100%;
  }
  .form-card {
    padding: 1.5rem;
  }
}

/* Classes migrated from inline styles to uphold strict style separation */
.tier-price-period {
  font-size: 1rem;
  font-family: var(--font-body);
}

.pricing-cta-wrap {
  text-align: center;
  margin-top: 3rem;
}

.pricing-cta-link {
  font-weight: 700;
  font-size: 0.8125rem;
  letter-spacing: var(--letter-spacing-md);
  text-transform: uppercase;
}

.footer-tagline {
  font-size: 0.875rem;
}

.section-mt-large {
  margin-top: 6rem;
}

.comparison-heading {
  font-family: var(--font-heading);
  margin-bottom: 2rem;
}

.faq-container {
  margin-top: 6rem;
  max-width: 800px;
}

.faq-heading {
  margin-top: 0.5rem;
  margin-bottom: 2.5rem;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.faq-question {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.docs-nav-eyebrow {
  display: block;
  margin-bottom: 1rem;
}

.docs-note {
  font-size: 0.875rem;
}

.docs-bullet-list {
  padding-left: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  color: var(--color-primary-muted);
}

.page-main-padded {
  padding-block: 5rem 6rem;
}

.btn-submit-full {
  width: 100%;
  margin-top: 1rem;
}

.form-alternate-contact {
  margin-top: 2rem;
  text-align: center;
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
}

.text-xs {
  font-size: 0.8125rem;
}

.text-sm {
  font-size: 0.875rem;
}

.direct-email-link {
  color: var(--color-foreground);
  font-weight: 700;
}

.container-legal {
  max-width: 800px;
}

.legal-title {
  margin-bottom: 2rem;
}

.legal-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  color: var(--color-primary-muted);
}

.legal-section-heading {
  font-size: 1.25rem;
  color: var(--color-foreground);
  margin-bottom: 0.5rem;
}