/* ── Blog CSS — shares token names with the main site CSS ───────────────────── */

/* Custom properties mirroring src/styles/tokens.css */
:root {
  --bg-base: #13173c;
  --bg-elevated: #1b2050;
  --bg-surface: #222760;
  --accent-primary: #6ce5fe;
  --accent-secondary: #b57bff;
  --text-primary: #f0f4ff;
  --text-secondary: #9ba4c4;
  --text-muted: #6b7494;
  --border-subtle: rgba(255 255 255 / 0.08);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --font-heading: 'Geist Variable', 'Geist', system-ui, sans-serif;
  --font-body: 'DM Sans Variable', 'DM Sans', system-ui, sans-serif;
  --duration-fast: 150ms;
  --ease-out: cubic-bezier(0.2, 0, 0, 1);
  --max-w-blog: 720px;
  --max-w-wide: 1100px;
}

/* ── Reset / base ────────────────────────────────────────────────────────────── */

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

.blog-page {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ── Site header — mirrors marketing site layout.css + components.css ─────────
   Blog pages are standalone HTML so these rules live here, not in the Vite
   bundle. Values are hardcoded from tokens.css so they stay in sync. ── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding-block: var(--space-4);
  background: rgba(19, 23, 60, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
  text-decoration: none;
}

.nav__logo-img {
  height: 36px;
  width: auto;
  border-radius: 8px;
  flex-shrink: 0;
}

.nav__logo-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;   /* --type-4 */
  letter-spacing: -0.03em;
  color: #ffffff;       /* --fg-primary */
}

.nav__links {
  display: none;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
}

@media (min-width: 768px) {
  .nav__links { display: flex; }
}

.nav__links a {
  font-size: 0.8rem;              /* --type-2 */
  font-weight: 500;
  color: rgba(255, 255, 255, 0.72); /* --fg-secondary */
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav__links a:hover {
  color: #ffffff;
}

/* Active state on Blog link when viewing blog pages */
.nav__links a[aria-current="page"] {
  color: var(--accent-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.nav__cta {
  margin-inline-start: auto;
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

/* ── Badge sizing — mirrors components.css ──────────────────────────────────── */

.badge-link {
  --badge-h: 48px;
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  transition: transform var(--duration-fast) var(--ease-out),
              filter var(--duration-fast) var(--ease-out);
}

.badge-link:hover {
  transform: scale(1.03);
  filter: brightness(1.1);
}

.badge-link img,
.badge-link svg,
.badge-link picture {
  width: auto;
  display: block;
}

.badge-link--app-store img,
.badge-link--app-store svg,
.badge-link--app-store picture {
  height: var(--badge-h);
}

/* 1.42× compensates for Google Play's internal padding */
.badge-link--google-play img,
.badge-link--google-play svg,
.badge-link--google-play picture {
  height: calc(var(--badge-h) * 1.42);
}

/* Header context — compact */
.site-header .badge-link {
  --badge-h: 32px;
}

@media (max-width: 480px) {
  .badge-link              { --badge-h: 44px; }
  .site-header .badge-link { --badge-h: 28px; }
}

/* ── Main ────────────────────────────────────────────────────────────────────── */

.blog-main {
  flex: 1;
}

/* ── Blog index ──────────────────────────────────────────────────────────────── */

.blog-index {
  max-width: var(--max-w-wide);
  margin-inline: auto;
  padding: var(--space-9) var(--space-5);
}

.blog-index__header {
  margin-bottom: var(--space-8);
}

.blog-index__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: var(--space-3);
}

.blog-index__sub {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-5);
}

/* ── Post card ───────────────────────────────────────────────────────────────── */

.post-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
}

.post-card:hover {
  transform: translateY(-2px);
  border-color: rgba(108 229 254 / 0.3);
}

.post-card__link {
  display: flex;
  flex-direction: column;
  height: 100%;
  text-decoration: none;
  color: inherit;
}

.post-card__cover {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.post-card__cover--placeholder {
  background: linear-gradient(135deg, var(--bg-surface) 0%, var(--accent-secondary) 100%);
  opacity: 0.4;
}

.post-card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}

.post-card__date {
  font-size: 0.8rem;
  color: var(--accent-primary);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.post-card__title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.3;
}

.post-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-top: var(--space-1);
}

/* ── Post page ───────────────────────────────────────────────────────────────── */

.post-header {
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-subtle);
  padding-block: var(--space-8);
}

.post-header__inner {
  max-width: var(--max-w-blog);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.post-back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  margin-bottom: var(--space-5);
  transition: color var(--duration-fast) var(--ease-out);
}

.post-back:hover {
  color: var(--accent-primary);
}

.post-date {
  display: block;
  font-size: 0.8rem;
  color: var(--accent-primary);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.post-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  line-height: 1.15;
  margin-bottom: var(--space-4);
}

.post-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: var(--space-4);
}

.post-author {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Cover image */

.post-cover {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  display: block;
}

/* ── Post body (markdown output) ──────────────────────────────────────────────── */

.post-body {
  max-width: var(--max-w-blog);
  margin-inline: auto;
  padding: var(--space-8) var(--space-5);
}

.post-body h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
  line-height: 1.2;
}

.post-body h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.post-body p {
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
  font-size: 1.05rem;
}

.post-body ul,
.post-body ol {
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
  padding-left: var(--space-6);
  font-size: 1.05rem;
}

.post-body li {
  margin-bottom: var(--space-2);
  line-height: 1.6;
}

.post-body li strong {
  color: var(--text-primary);
}

.post-body strong {
  color: var(--text-primary);
  font-weight: 600;
}

.post-body a {
  color: var(--accent-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.post-body a:hover {
  opacity: 0.8;
}

.post-body code {
  font-family: 'SF Mono', 'Fira Code', 'Menlo', monospace;
  font-size: 0.875em;
  background: var(--bg-surface);
  color: var(--accent-primary);
  padding: 2px 6px;
  border-radius: 4px;
}

.post-body pre {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  overflow-x: auto;
  margin-bottom: var(--space-5);
}

.post-body pre code {
  background: none;
  padding: 0;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.post-body blockquote {
  border-left: 3px solid var(--accent-primary);
  padding-left: var(--space-5);
  margin-bottom: var(--space-5);
  color: var(--text-muted);
  font-style: italic;
}

.post-body hr {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin-block: var(--space-7);
}

/* ── Post CTA ─────────────────────────────────────────────────────────────────── */

.post-cta {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  padding-block: var(--space-9);
}

.post-cta__inner {
  max-width: var(--max-w-blog);
  margin-inline: auto;
  padding-inline: var(--space-5);
  text-align: center;
}

.post-cta__label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.post-cta__headline {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: var(--space-6);
}

.post-cta__badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-4);
}

.post-cta__badge-link {
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  transition: transform var(--duration-fast) var(--ease-out),
              filter var(--duration-fast) var(--ease-out);
}

.post-cta__badge-link:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

/* ── Footer ──────────────────────────────────────────────────────────────────── */

.blog-footer {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  padding-block: var(--space-6);
}

.blog-footer__inner {
  max-width: var(--max-w-wide);
  margin-inline: auto;
  padding-inline: var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.blog-footer__copy {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.blog-footer__nav {
  display: flex;
  gap: var(--space-5);
}

.blog-footer__nav a {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

.blog-footer__nav a:hover {
  color: var(--text-primary);
}

/* ── Responsive ──────────────────────────────────────────────────────────────── */

@media (max-width: 640px) {
  .blog-footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

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

/* ── Legal pages ──────────────────────────────────────────────────────────────── */

.legal-page {
  max-width: 760px;
  margin: 4rem auto 6rem;
  padding: 0 1.5rem;
}

.legal-page > header {
  margin-bottom: 3rem;
}

.legal-page h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  margin: 0 0 0.5rem;
}

.legal-page .last-updated {
  color: var(--text-muted, #8a8fb0);
  font-size: 0.9rem;
  font-style: italic;
  margin: 0;
}

.legal-page .prose {
  line-height: 1.7;
  color: var(--text-secondary);
}

.legal-page .prose h2 {
  margin-top: 2.5rem;
  font-size: 1.4rem;
  color: var(--text-primary);
}

.legal-page .prose h3 {
  margin-top: 2rem;
  font-size: 1.15rem;
  color: var(--text-primary);
}

.legal-page .prose ul,
.legal-page .prose ol {
  padding-left: 1.5rem;
}

.legal-page .prose a {
  color: var(--accent-secondary, #036AE6);
}

/* ── Reduced motion ──────────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  .post-card,
  .post-cta__badge-link,
  .nav__links a,
  .badge-link,
  .post-back {
    transition: none;
  }
}