/* ---- blog.css — ClearFlow Blog & Article Styles ---- */

:root {
  --bg-0: #060409;
  --bg-1: #0b0814;
  --bg-2: #110c1d;
  --ink-0: #ffffff;
  --ink-1: #e7e3ef;
  --ink-2: #a39db4;
  --ink-3: #6b6480;
  --ink-4: #3d3852;
  --accent-violet: #b18bff;
  --accent-magenta: #f3a3ff;
  --accent-emerald: #7df0c4;
  --accent-sky: #8ed4ff;
  --accent-amber: #ffc079;
  --accent-rose: #ff8aa6;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --font-display: "Instrument Serif", "Times New Roman", serif;
  --font-body: "Geist", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "Geist Mono", "SF Mono", Menlo, monospace;
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --max-w: 1280px;
  --content-w: 700px;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg-0);
  color: var(--ink-1);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ---- Grain ---- */
.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: 0.06;
  z-index: 100;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- Container ---- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
}

@media (max-width: 720px) {
  .container {
    padding: 0 22px;
  }
}

/* ---- Nav ---- */
nav {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  width: calc(100% - 40px);
  max-width: 920px;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px 12px 22px;
  background: rgba(11, 8, 20, 0.55);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  letter-spacing: -0.01em;
  font-size: 15px;
}

.nav-brand-mark {
  width: 22px;
  height: 22px;
  border-radius: 7px;
  object-fit: cover;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: 4px;
  align-items: center;
}

.nav-links a {
  font-size: 14px;
  color: var(--ink-2);
  padding: 8px 14px;
  border-radius: 999px;
  transition: color 0.2s, background 0.2s;
}

.nav-links a:hover,
.nav-links a.is-active {
  color: var(--ink-0);
  background: rgba(255, 255, 255, 0.04);
}

.nav-cta {
  font-size: 13px !important;
  font-weight: 500;
  padding: 9px 16px !important;
  background: var(--ink-0) !important;
  color: #0b0814 !important;
  transition: transform 0.2s !important;
}

.nav-cta:hover {
  transform: translateY(-1px);
  background: var(--ink-0) !important;
  color: #0b0814 !important;
}

@media (max-width: 720px) {
  .nav-links a:not(.nav-cta) {
    display: none;
  }
}

/* ---- Blog Hero (index page) ---- */
.blog-hero {
  padding: 148px 0 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.blog-hero-glow {
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(177, 139, 255, 0.28), transparent 65%);
  pointer-events: none;
}

.blog-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-violet);
  margin: 0 0 16px;
}

.blog-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 400;
  color: var(--ink-0);
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}

.blog-title em {
  font-style: italic;
  color: var(--accent-violet);
}

.blog-subtitle {
  font-size: 17px;
  color: var(--ink-2);
  max-width: 460px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ---- Blog Grid ---- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 52px 0 100px;
}

@media (max-width: 960px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 580px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
}

/* ---- Article Card ---- */
.article-card {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s;
  text-decoration: none;
  color: inherit;
}

.article-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-4px);
}

.article-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.article-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
}

.article-tag-emerald {
  color: var(--accent-emerald);
  background: rgba(125, 240, 196, 0.1);
}

.article-tag-violet {
  color: var(--accent-violet);
  background: rgba(177, 139, 255, 0.1);
}

.article-tag-amber {
  color: var(--accent-amber);
  background: rgba(255, 192, 121, 0.1);
}

.article-read-time {
  font-size: 12px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.article-card-title {
  font-family: var(--font-body);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--ink-0);
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin: 4px 0 0;
  flex: 1;
}

.article-card-excerpt {
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.65;
  margin: 0;
}

.article-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.article-date {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.05em;
}

.article-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-violet);
  display: flex;
  align-items: center;
  gap: 5px;
  transition: gap 0.2s, color 0.2s;
}

.article-card:hover .article-link {
  gap: 9px;
  color: var(--accent-magenta);
}

.article-card-glow {
  position: absolute;
  bottom: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  filter: blur(70px);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}

.article-card:hover .article-card-glow {
  opacity: 0.18;
}

.glow-emerald {
  background: var(--accent-emerald);
}

.glow-violet {
  background: var(--accent-violet);
}

.glow-amber {
  background: var(--accent-amber);
}

/* ---- Article Page Hero ---- */
.article-hero {
  padding: 132px 0 52px;
  position: relative;
  overflow: hidden;
}

.article-hero-glow {
  position: absolute;
  top: -180px;
  left: 50%;
  transform: translateX(-50%);
  width: 1000px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(177, 139, 255, 0.22), transparent 65%);
  pointer-events: none;
}

.article-breadcrumb {
  font-size: 13px;
  color: var(--ink-3);
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 8px;
  position: relative;
  z-index: 1;
}

.article-breadcrumb a {
  color: var(--accent-violet);
  transition: color 0.2s;
}

.article-breadcrumb a:hover {
  color: var(--accent-magenta);
}

.article-breadcrumb-sep {
  color: var(--ink-4);
}

.article-hero-tag {
  display: inline-block;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.article-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 400;
  color: var(--ink-0);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
  max-width: 820px;
  position: relative;
  z-index: 1;
}

.article-hero-title em {
  font-style: italic;
}

.article-hero-meta {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.article-meta-item {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.05em;
}

.article-meta-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--ink-4);
}

/* ---- Article Body ---- */
.article-body {
  max-width: var(--content-w);
  padding-bottom: 80px;
}

.article-divider {
  height: 1px;
  background: var(--line);
  margin: 44px 0;
  max-width: var(--content-w);
}

.article-body p {
  font-size: 17px;
  color: var(--ink-2);
  line-height: 1.8;
  margin: 0 0 24px;
}

.article-body h2 {
  font-family: var(--font-body);
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--ink-0);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 52px 0 18px;
}

.article-body h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--ink-0);
  margin: 32px 0 12px;
  letter-spacing: -0.01em;
}

.article-body ul {
  margin: 0 0 24px;
  padding-left: 1.25rem;
}

.article-body li {
  font-size: 17px;
  color: var(--ink-2);
  line-height: 1.75;
  margin-bottom: 10px;
}

.article-body li:last-child {
  margin-bottom: 0;
}

.article-body strong {
  color: var(--ink-1);
  font-weight: 600;
}

.article-body em {
  font-style: italic;
  color: var(--ink-0);
}

/* ---- Callout box (tip / insight) ---- */
.article-callout {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent-violet);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px 24px;
  margin: 32px 0;
}

.article-callout p {
  margin: 0;
  font-size: 15px;
  color: var(--ink-1);
  line-height: 1.65;
}

.article-callout p+p {
  margin-top: 10px;
}

.article-callout strong {
  color: var(--ink-0);
}

/* ---- App CTA block ---- */
.article-app-cta {
  background: linear-gradient(135deg, rgba(177, 139, 255, 0.1), rgba(243, 163, 255, 0.06));
  border: 1px solid rgba(177, 139, 255, 0.22);
  border-radius: var(--radius-md);
  padding: 32px 36px;
  margin: 52px 0;
  position: relative;
  overflow: hidden;
}

.article-app-cta-glow {
  position: absolute;
  top: -80px;
  right: -80px;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(177, 139, 255, 0.35), transparent 70%);
  pointer-events: none;
}

.article-app-cta h3 {
  font-family: var(--font-body);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--ink-0);
  margin: 0 0 10px;
  letter-spacing: -0.02em;
  position: relative;
  z-index: 1;
}

.article-app-cta p {
  font-size: 15px;
  color: var(--ink-2);
  margin: 0 0 24px;
  line-height: 1.65;
  max-width: 480px;
  position: relative;
  z-index: 1;
}

.btn-app-store {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  background: var(--ink-0);
  color: #0b0814;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: transform 0.2s, opacity 0.2s;
  position: relative;
  z-index: 1;
}

.btn-app-store:hover {
  transform: translateY(-2px);
}

.btn-app-store svg {
  width: 14px;
  height: 18px;
  flex-shrink: 0;
}

/* ---- More Articles (bottom of article page) ---- */
.article-more {
  padding: 60px 0 80px;
  border-top: 1px solid var(--line);
}

.article-more-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 28px;
}

.article-more-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

@media (max-width: 580px) {
  .article-more-grid {
    grid-template-columns: 1fr;
  }
}

/* ---- Footer ---- */
footer {
  background: var(--bg-0);
  padding: 60px 0 40px;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  color: var(--ink-1);
}

.footer-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.05em;
}

.footer-links {
  display: flex;
  gap: 24px;
  font-size: 14px;
  color: var(--ink-2);
}

.footer-links a:hover {
  color: var(--ink-0);
}

@media (max-width: 720px) {
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}