/* Crittr AI — shared styles for GitHub Pages */

:root {
  --color-bg: #fbfbfd;
  --color-bg-elevated: #ffffff;
  --color-text: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-accent: #0071e3;
  --color-accent-hover: #0077ed;
  --color-border: rgba(0, 0, 0, 0.08);
  --color-hero-gradient-start: #f5f5f7;
  --color-hero-gradient-end: #e8e8ed;
  --color-brand-green: #b4f04a;
  --color-showcase-bg: #0b1610;
  --color-showcase-text: #f5f7f4;
  --color-showcase-muted: #a8b5a8;
  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --max-width: 980px;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.08);
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 5.5rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-system);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
}

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

a:hover {
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius);
  z-index: 100;
}

.skip-link:focus {
  top: var(--space-sm);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 251, 253, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-sm) var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.site-logo {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

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

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-text);
  text-decoration: none;
}

.site-nav a[aria-current="page"] {
  font-weight: 500;
}

/* Main layout */
main {
  min-height: 50vh;
}

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

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

.section--tight {
  padding: var(--space-lg) 0;
}

.section-title {
  margin: 0 0 var(--space-md);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.15;
  text-align: center;
}

.section-lead {
  margin: 0 auto var(--space-lg);
  max-width: 42rem;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 1.125rem;
}

/* Hero */
.hero {
  padding: var(--space-2xl) 0 var(--space-xl);
  background: linear-gradient(180deg, var(--color-hero-gradient-start) 0%, var(--color-hero-gradient-end) 100%);
  text-align: center;
}

.hero__badge {
  display: inline-block;
  margin-bottom: var(--space-md);
  padding: 0.35rem 0.85rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 999px;
}

.hero__title {
  margin: 0 0 var(--space-md);
  font-size: clamp(2.25rem, 6vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.hero__subtitle {
  margin: 0 auto var(--space-lg);
  max-width: 36rem;
  font-size: clamp(1.125rem, 2.5vw, 1.375rem);
  color: var(--color-text-secondary);
  line-height: 1.45;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  font-family: inherit;
  line-height: 1.25;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s ease, transform 0.15s ease;
}

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

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

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

.btn--secondary {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

.btn--secondary:hover {
  background: rgba(0, 113, 227, 0.06);
  color: var(--color-accent);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 600px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .feature-grid--three {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  padding: var(--space-md);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.feature-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-bottom: var(--space-sm);
  font-size: 1.35rem;
  background: var(--color-hero-gradient-start);
  border-radius: var(--radius);
}

.feature-card__title {
  margin: 0 0 var(--space-xs);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.feature-card__text {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* Built for iPhone */
.iphone-section {
  text-align: center;
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.iphone-section__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-sm);
}

.iphone-section p {
  margin: 0 auto;
  max-width: 32rem;
  color: var(--color-text-secondary);
}

/* Legal / support content */
.page-header {
  padding: var(--space-xl) 0 var(--space-md);
  text-align: center;
}

.page-header h1 {
  margin: 0 0 var(--space-sm);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.page-header p {
  margin: 0 auto;
  max-width: 40rem;
  color: var(--color-text-secondary);
}

.content-prose {
  max-width: 42rem;
  margin: 0 auto;
  padding-bottom: var(--space-xl);
}

.content-prose h2 {
  margin: var(--space-lg) 0 var(--space-sm);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.content-prose h3 {
  margin: var(--space-md) 0 var(--space-xs);
  font-size: 1.0625rem;
  font-weight: 600;
}

.content-prose p,
.content-prose li {
  color: var(--color-text);
}

.content-prose ul,
.content-prose ol {
  padding-left: 1.35rem;
}

.content-prose li {
  margin-bottom: var(--space-xs);
}

.content-prose li strong {
  color: var(--color-text);
}

.effective-date {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

/* FAQ */
.faq-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.faq-item:first-child {
  padding-top: 0;
}

.faq-item__question {
  margin: 0 0 var(--space-xs);
  font-size: 1.0625rem;
  font-weight: 600;
}

.faq-item__answer {
  margin: 0;
  color: var(--color-text-secondary);
}

/* Callout */
.callout {
  margin: var(--space-lg) 0;
  padding: var(--space-md);
  background: #fff8e6;
  border: 1px solid #f0e0b0;
  border-radius: var(--radius);
  font-size: 0.9375rem;
}

.callout--info {
  background: #f0f7ff;
  border-color: #c8ddf5;
}

.callout strong {
  display: block;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

/* Contact block */
.contact-block {
  margin: var(--space-lg) 0;
  padding: var(--space-md);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
}

.contact-block a {
  font-weight: 500;
  font-size: 1.125rem;
}

/* Footer */
.site-footer {
  margin-top: auto;
  padding: var(--space-lg) 0;
  background: var(--color-text);
  color: #a1a1a6;
  font-size: 0.875rem;
}

.site-footer a {
  color: #f5f5f7;
}

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

.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  text-align: center;
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm) var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer__nav a {
  text-decoration: none;
}

.site-footer__nav a:hover {
  text-decoration: underline;
}

.site-footer__copy {
  margin: 0;
}

/* App showcase (screenshots) */
.showcase {
  padding: var(--space-xl) 0;
  background: var(--color-showcase-bg);
  color: var(--color-showcase-text);
}

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

.showcase .section-lead {
  color: var(--color-showcase-muted);
}

.showcase-steps {
  margin: var(--space-lg) 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.showcase-step {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: center;
}

@media (min-width: 768px) {
  .showcase-step {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }

  .showcase-step--reverse .showcase-step__content {
    order: 2;
  }

  .showcase-step--reverse .showcase-step__figure {
    order: 1;
  }
}

.showcase-step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  margin-bottom: var(--space-sm);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-showcase-bg);
  background: var(--color-brand-green);
  border-radius: 6px;
}

.showcase-step__title {
  margin: 0 0 var(--space-sm);
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  text-transform: uppercase;
}

.showcase-step__title em {
  font-style: normal;
  color: var(--color-brand-green);
}

.showcase-step__text {
  margin: 0;
  color: var(--color-showcase-muted);
  font-size: 1.0625rem;
  line-height: 1.55;
  max-width: 28rem;
}

.showcase-step__figure {
  margin: 0;
  text-align: center;
}

.showcase-step__figure img {
  display: block;
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.45);
}