:root {
  --bg: #ffffff;
  --surface: #f7f7f7;
  --text: #121212;
  --muted: #5d5d5d;
  --border: #e8e8e8;
  --shadow: 0 14px 36px rgba(0, 0, 0, 0.06);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

.blog-shell {
  max-width: 1160px;
  margin: 0 auto;
  padding: 96px 20px 0;
}

.blog-nav {
  background: rgba(250, 249, 251, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.blog-nav-inner {
  max-width: 1536px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-links a {
  text-decoration: none;
}

.blog-hero {
  padding: 44px 0 20px;
}

.blog-hero h1 {
  margin: 0 0 10px;
  font-family: Poppins, sans-serif;
  font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.blog-hero p {
  margin: 0;
  max-width: 740px;
  color: var(--muted);
  font-size: 1.03rem;
}

.filter-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
}

.filter-btn {
  border: 1px solid var(--border);
  background: #fff;
  color: #181818;
  border-radius: 999px;
  padding: 9px 16px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
}

.filter-btn.active {
  background: #111;
  color: #fff;
  border-color: #111;
}

.blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  padding: 30px 0 70px;
}

.blog-card {
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}

.blog-card-media {
  aspect-ratio: 16 / 9;
  width: 100%;
  object-fit: cover;
}

.blog-card-body {
  padding: 20px;
  display: grid;
  gap: 10px;
}

.blog-category {
  font-size: 0.73rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
}

.blog-card-title {
  margin: 0;
  font-family: Poppins, sans-serif;
  font-size: 1.25rem;
  line-height: 1.3;
}

.blog-card-desc {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.read-more {
  margin-top: 6px;
  justify-self: start;
  text-decoration: none;
  border: 1px solid #111;
  color: #111;
  background: #fff;
  border-radius: 12px;
  padding: 9px 14px;
  font-size: 0.83rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.read-more:hover {
  background: #111;
  color: #fff;
}

.post-wrap {
  max-width: 840px;
  margin: 0 auto;
  padding: 120px 20px 120px;
}

.post-title {
  margin: 0;
  font-family: Poppins, sans-serif;
  font-size: clamp(2rem, 4.8vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.post-subtitle {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 1.06rem;
}

.post-meta {
  margin-top: 16px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #2e2e2e;
}

.post-featured {
  width: 100%;
  aspect-ratio: 16 / 8;
  object-fit: cover;
  border-radius: 18px;
  margin: 24px 0 30px;
  border: 1px solid var(--border);
}

.post-section {
  margin-bottom: 28px;
}

.post-section h2 {
  margin: 0 0 10px;
  font-family: Poppins, sans-serif;
  font-size: 1.55rem;
  line-height: 1.2;
}

.post-section h3 {
  margin: 4px 0 12px;
  font-family: Poppins, sans-serif;
  font-size: 1.1rem;
  color: #2f2f2f;
}

.post-section p {
  margin: 0 0 12px;
  color: #2f2f2f;
}

.post-section ul {
  margin: 0;
  padding-left: 20px;
}

.post-section li {
  margin: 0 0 8px;
}

.cta-box {
  border: 1px solid #111;
  border-radius: 16px;
  padding: 20px;
  background: #fafafa;
  margin: 30px 0;
}

.cta-box h4 {
  margin: 0 0 10px;
  font-family: Poppins, sans-serif;
  font-size: 1.25rem;
  line-height: 1.25;
}

.cta-box p {
  margin: 0;
  color: #3c3c3c;
}

.cta-actions {
  margin-top: 16px;
}

.cta-btn {
  display: inline-block;
  text-decoration: none;
  border-radius: 12px;
  padding: 11px 16px;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: 1px solid #111;
  background: #111;
  color: #fff;
}

.trainer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 16px;
}

.trainer-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.trainer-name {
  margin: 0;
  font-weight: 800;
}

.trainer-meta {
  margin: 2px 0 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.view-profile-btn {
  text-decoration: none;
  border: 1px solid #111;
  color: #111;
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}

.view-profile-btn:hover {
  background: #111;
  color: #fff;
}

.mobile-sticky-cta {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 60;
}

.mobile-sticky-cta .cta-btn {
  width: 100%;
  text-align: center;
}

@media (min-width: 640px) {
  .blog-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .trainer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .blog-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .mobile-sticky-cta {
    display: none;
  }
}