@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:ital,wght@0,400;0,500;0,600;1,400&family=IBM+Plex+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
  --bg-primary:      #0e0e0e;
  --bg-secondary:    #141414;
  --bg-surface:      #1a1a1a;
  --bg-elevated:     #202020;
  --text-primary:    #f0f0f0;
  --text-secondary:  #a0a8b0;
  --text-muted:      #505860;
  --text-inverse:    #0e0e0e;
  --accent-primary:  #00e5ff;
  --accent-hover:    #33eaff;
  --accent-active:   #00b8cc;
  --accent-glow:     rgba(0, 229, 255, 0.08);
  --accent-blue:     #3498db;
  --border-subtle:   #1e1e1e;
  --border-default:  #2a2a2a;
  --border-strong:   #404040;
  --border-accent:   rgba(0, 229, 255, 0.3);
  --font-sans:       'IBM Plex Sans', sans-serif;
  --font-mono:       'IBM Plex Mono', monospace;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color 150ms ease;
}

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

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

/* ─── NAVBAR ─────────────────────────────────────────────────── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(14, 14, 14, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.navbar-brand span {
  color: var(--accent-primary);
}

.navbar-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* ─── PAGE LAYOUT ─────────────────────────────────────────────── */
.page-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── BLOG INDEX ──────────────────────────────────────────────── */
.index-header {
  padding: 60px 0 40px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 40px;
}

.index-header h1 {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.index-header .subtitle {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* ─── FILTER BAR ──────────────────────────────────────────────── */
.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 36px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  padding: 5px 12px;
  cursor: pointer;
  border-radius: 2px;
  transition: all 150ms ease;
}

.filter-btn:hover,
.filter-btn.active {
  color: var(--accent-primary);
  border-color: var(--border-accent);
  background: var(--accent-glow);
}

/* ─── POST CARDS GRID ─────────────────────────────────────────── */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
  margin-bottom: 60px;
}

.post-card {
  background: var(--bg-secondary);
  transition: background 150ms ease, border-left-color 150ms ease;
  border-left: 2px solid transparent;
  display: flex;
  flex-direction: column;
  cursor: pointer;
}

.post-card:hover {
  background: var(--bg-elevated);
  border-left-color: var(--accent-primary);
}

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

.post-card-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}

.post-card-image-placeholder {
  width: 100%;
  height: 180px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
}

.post-card-image-placeholder-inner {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.post-card-body {
  padding: 20px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.post-card-category {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-primary);
  margin-bottom: 10px;
}

.post-card-title {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.post-card-excerpt {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 16px;
}

.post-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.post-card-date {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

.post-card-readmore {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--accent-primary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ─── EMPTY STATE ─────────────────────────────────────────────── */
.empty-state {
  padding: 80px 24px;
  text-align: center;
  border: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
  margin-bottom: 60px;
}

.empty-state h2 {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.empty-state p {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ─── ERROR STATE ─────────────────────────────────────────────── */
.error-state {
  padding: 60px 24px;
  text-align: center;
  border: 1px solid #3a1a1a;
  background: #1a0e0e;
  margin: 40px 0;
}

.error-state h2 {
  font-size: 1.1rem;
  font-weight: 500;
  color: #ff6b6b;
  margin-bottom: 8px;
}

.error-state p {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ─── SINGLE POST PAGE ────────────────────────────────────────── */
.post-back {
  padding: 20px 0;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 0;
}

.back-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color 150ms ease;
}

.back-link::before {
  content: '← ';
}

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

.post-cover {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  border-bottom: 1px solid var(--border-default);
  display: block;
}

.post-header {
  padding: 40px 0 28px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 40px;
}

.post-meta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.post-category-chip {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-inverse);
  background: var(--accent-primary);
  padding: 3px 8px;
  border-radius: 2px;
}

.post-date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

.post-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--text-primary);
}

/* ─── POST BODY TYPOGRAPHY ────────────────────────────────────── */
.post-body {
  max-width: 740px;
  margin: 0 auto;
  padding-bottom: 80px;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

.post-body p {
  margin-bottom: 1.4em;
}

.post-body h2 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 2.5em 0 0.75em;
  padding-top: 0.5em;
  border-top: 1px solid var(--border-subtle);
}

.post-body h3 {
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin: 2em 0 0.6em;
}

.post-body h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 1.5em 0 0.4em;
}

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

.post-body em {
  color: var(--text-secondary);
  font-style: italic;
}

.post-body blockquote {
  border-left: 3px solid var(--accent-primary);
  background: var(--bg-surface);
  margin: 1.5em 0;
  padding: 16px 20px;
  border-radius: 0 2px 2px 0;
}

.post-body blockquote p {
  margin-bottom: 0;
  color: var(--text-secondary);
  font-style: italic;
}

.post-body code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  color: var(--accent-primary);
  background: var(--bg-elevated);
  padding: 2px 6px;
  border-radius: 2px;
  border: 1px solid var(--border-default);
}

.post-body pre {
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: 2px;
  padding: 20px;
  overflow-x: auto;
  margin: 1.5em 0;
}

.post-body pre code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-primary);
  background: none;
  padding: 0;
  border: none;
  border-radius: 0;
}

.post-body ul,
.post-body ol {
  margin: 1em 0 1.4em;
  padding-left: 1.5em;
}

.post-body li {
  margin-bottom: 0.4em;
}

.post-body ul li::marker {
  color: var(--accent-primary);
}

.post-body ol li::marker {
  color: var(--accent-primary);
  font-family: var(--font-mono);
  font-size: 0.85em;
}

.post-body hr {
  border: none;
  border-top: 1px solid var(--border-default);
  margin: 2.5em 0;
}

/* Images in post body */
.post-body img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border-default);
  border-radius: 2px;
  margin: 1.5em auto;
  display: block;
}

.post-body figure {
  margin: 1.5em 0;
}

.post-body figure img {
  margin-bottom: 0;
}

.post-body figcaption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: center;
  padding: 8px 0;
  letter-spacing: 0.03em;
  border-bottom: 1px solid var(--border-subtle);
}

/* Chart/screenshot specific — horizontal scroll on mobile, never overflow */
.post-body .chart-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.post-body a {
  color: var(--accent-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ─── POST FOOTER ─────────────────────────────────────────────── */
.post-footer {
  padding: 24px 0;
  border-top: 1px solid var(--border-subtle);
  margin-top: 40px;
  max-width: 740px;
  margin-left: auto;
  margin-right: auto;
}

/* ─── SITE FOOTER ─────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 24px;
  text-align: center;
}

.site-footer p {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* ─── LOADING STATE ───────────────────────────────────────────── */
.loading-state {
  padding: 80px 24px;
  text-align: center;
}

.loading-state p {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  animation: pulse 1.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

/* ─── RESPONSIVE ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  .navbar-inner {
    padding: 0 16px;
  }

  .page-container {
    padding: 0 16px;
  }

  .index-header {
    padding: 36px 0 28px;
  }

  .index-header h1 {
    font-size: 1.6rem;
  }

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

  .post-title {
    font-size: 1.6rem;
  }

  .post-body h2 {
    font-size: 1.5rem;
  }

  .post-body h3 {
    font-size: 1.2rem;
  }

  .post-body {
    font-size: 0.95rem;
  }

  .post-meta-row {
    flex-wrap: wrap;
    gap: 10px;
  }
}

/* ─── SHARE BUTTONS ───────────────────────────────────────────── */
.share-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 20px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  margin: 32px 0 0;
}

.share-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  margin-right: 4px;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: 2px;
  padding: 5px 10px;
  cursor: pointer;
  text-decoration: none;
  transition: all 150ms ease;
  letter-spacing: 0.03em;
}

.share-btn:hover {
  color: var(--accent-primary);
  border-color: var(--border-accent);
  background: var(--accent-glow);
}

/* ─── POST CTA ────────────────────────────────────────────────── */
.post-cta {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-default);
  border-bottom: 1px solid var(--border-default);
  margin: 40px 0 0;
  padding: 36px 0;
}

.post-cta-inner {
  max-width: 740px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.post-cta-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent-primary);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.post-cta-heading {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.post-cta-sub {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 480px;
}

.post-cta-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-shrink: 0;
}

.post-cta-btn-primary {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-inverse);
  background: var(--accent-primary);
  border: 1px solid var(--accent-primary);
  border-radius: 2px;
  padding: 9px 18px;
  text-decoration: none;
  white-space: nowrap;
  transition: all 150ms ease;
  text-align: center;
}

.post-cta-btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--text-inverse);
}

.post-cta-btn-secondary {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  text-decoration: none;
  text-align: center;
  transition: color 150ms ease;
}

.post-cta-btn-secondary:hover {
  color: var(--accent-primary);
}

/* ─── BLOG FOOTER SUBSCRIBE NUDGE ────────────────────────────── */
.blog-subscribe-bar {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 28px 24px;
  text-align: center;
}

.blog-subscribe-bar p {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  letter-spacing: 0.03em;
}

.blog-subscribe-bar a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-inverse);
  background: var(--accent-primary);
  border-radius: 2px;
  padding: 7px 16px;
  text-decoration: none;
  transition: background 150ms ease;
  display: inline-block;
}

.blog-subscribe-bar a:hover {
  background: var(--accent-hover);
}

@media (max-width: 768px) {
  .post-cta-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 0 16px;
  }

  .post-cta-actions {
    flex-direction: row;
    align-items: center;
    width: 100%;
  }

  .post-cta-btn-primary {
    flex: 1;
    text-align: center;
  }

  .share-row {
    gap: 6px;
  }
}

/* ─── TRADINGVIEW EMBEDS ──────────────────────────────────────── */
.tv-embed-wrap {
  width: 100%;
  margin: 1.5em 0;
  border: 1px solid var(--border-default);
  border-radius: 2px;
  overflow: hidden;
  background: var(--bg-surface);
}

.tv-embed-wrap iframe {
  display: block;
  width: 100%;
  min-height: 400px;
  border: none;
}

.tv-embed-wrap p {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: center;
  padding: 8px 0;
  margin: 0;
  border-top: 1px solid var(--border-subtle);
  letter-spacing: 0.03em;
}

/* Mobile: shorter height so chart doesn't dominate */
@media (max-width: 768px) {
  .tv-embed-wrap iframe {
    min-height: 300px;
  }
}