/* ═══════════════════════════════════════════════════════════
   ELVN:11 — Blog Styles
   Listing page + individual post pages
═══════════════════════════════════════════════════════════ */

/* Full-page background: systems.png fades into page colour */
html {
  background-color: var(--clr-bg);
  background-image:
    /* Fade to solid at ~600px */
    linear-gradient(to bottom,
      rgba(4, 13, 24, 0.25) 0%,
      rgba(4, 13, 24, 0.80) 40%,
      var(--clr-bg) 70%
    ),
    url('../assets/images/systems/systems.webp');
  background-repeat: no-repeat;
  background-position: top center;
  background-size: 100% 700px, cover;
  background-attachment: scroll, scroll;
}

body {
  background-color: transparent;
}

/* Fade keyframes kept for scroll animation if needed elsewhere */
@keyframes fade-bg {
  to {
    opacity: 0;
    transform: translateY(40px);
  }
}

/* ── Shared Layout ───────────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--sp-24);
}

.accent { color: var(--clr-accent); }

.section-label {
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.75rem;
  font-weight: var(--fw-semibold);
  color: var(--clr-accent);
  margin-bottom: var(--sp-12);
}

/* ── Blog Hero ───────────────────────────────────────────── */
.blog-hero {
  padding: 160px 0 var(--sp-48);
  text-align: center;
  background: radial-gradient(ellipse 80% 50% at 50% 40%, rgba(78, 205, 196, 0.05) 0%, transparent 70%);
}

.blog-hero-headline {
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  font-weight: var(--fw-extrabold);
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--clr-white);
  margin-bottom: var(--sp-16);
}

.blog-hero-sub {
  font-size: 1.05rem;
  color: var(--clr-white-55);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ── Blog Section / Grid ─────────────────────────────────── */
.blog-section {
  padding: var(--sp-64) 0 var(--sp-80);
  background: var(--clr-bg);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--sp-24);
}

.blog-loading,
.blog-empty {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--clr-white-45);
  font-size: 0.9rem;
  padding: var(--sp-48) 0;
}

/* ── Blog Filters & Search ───────────────────────────────── */
.blog-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--sp-48);
  align-items: start;
}

.blog-filters {
  display: flex;
  flex-direction: column;
  gap: var(--sp-32);
  margin-bottom: var(--sp-48);
}

.search-bar {
  position: relative;
  max-width: 500px;
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--clr-white-45);
}

#blog-search {
  width: 100%;
  padding: 14px 16px 14px 44px;
  background: var(--clr-white-05);
  border: 1px solid var(--clr-white-10);
  border-radius: var(--radius-lg);
  color: var(--clr-white);
  font-family: var(--font-base);
  font-size: 1rem;
  transition: border-color var(--ease-fast), box-shadow var(--ease-fast);
}

#blog-search:focus {
  outline: none;
  border-color: rgba(78, 205, 196, 0.4);
  box-shadow: 0 0 0 2px rgba(78, 205, 196, 0.15);
  background: var(--clr-white-08);
}

#blog-search::placeholder {
  color: var(--clr-white-35);
}

.search-bar--large {
  max-width: 100%;
  margin: 0 auto;
}

.search-bar--large .search-icon {
  width: 24px;
  height: 24px;
  left: 20px;
}

.search-bar--large #blog-search {
  padding: 20px 24px 20px 60px;
  font-size: 1.25rem;
  border-radius: 100px; /* fully rounded pill shape */
  background: var(--clr-white-05);
}

.filter-group {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-12);
  flex-wrap: wrap;
}

.filter-group--vertical {
  flex-direction: column;
}

.filter-label {
  font-size: 0.8rem;
  color: var(--clr-white-55);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: var(--fw-semibold);
  margin-top: 6px;
  min-width: 90px;
}

.filter-group--vertical .filter-label {
  margin-top: 0;
  margin-bottom: 4px;
  min-width: auto;
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-8);
  flex: 1;
}

.filter-chip {
  background: var(--clr-white-05);
  border: 1px solid var(--clr-white-10);
  color: var(--clr-white-70);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--ease-fast);
  font-family: var(--font-base);
}

.filter-chip:hover {
  background: var(--clr-white-10);
  color: var(--clr-white);
}

.filter-chip.active {
  background: rgba(78, 205, 196, 0.15);
  border-color: rgba(78, 205, 196, 0.3);
  color: var(--clr-accent);
}

/* ── Blog Card ───────────────────────────────────────────── */
.blog-card {
  display: block;
  text-decoration: none;
  background: var(--clr-white-05);
  border: 1px solid var(--clr-white-08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--ease-base), transform var(--ease-base);
}

.blog-card:hover {
  border-color: rgba(78, 205, 196, 0.25);
  transform: translateY(-3px);
}

.blog-card--featured {
  grid-column: 1 / -1;
  border-color: rgba(78, 205, 196, 0.15);
  background: linear-gradient(135deg, rgba(78, 205, 196, 0.06) 0%, var(--clr-white-05) 100%);
}

.blog-card-inner {
  padding: var(--sp-32);
}

.blog-card--featured .blog-card-inner {
  padding: var(--sp-40) var(--sp-48);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: var(--sp-12);
  margin-bottom: var(--sp-16);
}

.blog-card-cat {
  font-size: 0.7rem;
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-accent);
  background: var(--clr-accent-dim);
  padding: var(--sp-4) var(--sp-8);
  border-radius: var(--radius-sm);
}

.blog-card-time {
  font-size: 0.75rem;
  color: var(--clr-white-45);
}

.blog-card-title {
  font-size: 1.25rem;
  font-weight: var(--fw-bold);
  color: var(--clr-white);
  line-height: 1.35;
  margin-bottom: var(--sp-12);
  transition: color var(--ease-fast);
}

.blog-card--featured .blog-card-title {
  font-size: 1.6rem;
}

.blog-card:hover .blog-card-title {
  color: var(--clr-accent);
}

.blog-card-desc {
  font-size: 0.88rem;
  color: var(--clr-white-55);
  line-height: 1.65;
  margin-bottom: var(--sp-24);
}

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

.blog-card-date {
  font-size: 0.75rem;
  color: var(--clr-white-20);
}

.blog-card-arrow {
  font-size: 1.2rem;
  color: var(--clr-accent);
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity var(--ease-fast), transform var(--ease-fast);
}

.blog-card:hover .blog-card-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ── Blog CTA Section ────────────────────────────────────── */
.blog-cta-section {
  padding: var(--sp-80) 0;
  background:
    linear-gradient(135deg, rgba(78, 205, 196, 0.06) 0%, rgba(14, 165, 233, 0.04) 50%, var(--clr-bg) 100%);
  border-top: 1px solid var(--clr-white-05);
}

.blog-cta-title {
  font-size: 1.6rem;
  font-weight: var(--fw-extrabold);
  color: var(--clr-white);
  margin-bottom: var(--sp-12);
}

.blog-cta-sub {
  font-size: 0.95rem;
  color: var(--clr-white-55);
  margin-bottom: var(--sp-32);
  line-height: 1.65;
}

.blog-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-8);
  padding: var(--sp-12) var(--sp-32);
  background: var(--clr-accent);
  color: #040d18 !important;
  font-family: var(--font-base);
  font-size: 0.9rem;
  font-weight: var(--fw-semibold);
  text-decoration: none;
  border-radius: var(--radius-pill);
  transition: background var(--ease-fast), transform var(--ease-fast);
}

.blog-cta-btn svg {
  flex-shrink: 0;
  stroke: #040d18;
}

.blog-cta-btn:hover {
  background: #3dbdb5;
}

.blog-cta-btn:active {
  transform: scale(0.97);
}

/* ═══════════════════════════════════════════════════════════
   BLOG POST PAGE
═══════════════════════════════════════════════════════════ */
.post-hero {
  position: relative;
  padding: 160px 0 var(--sp-32);
  text-align: center;
  overflow: hidden;
  background: radial-gradient(ellipse 80% 50% at 50% 40%, rgba(78, 205, 196, 0.04) 0%, transparent 70%);
}

/* Subtle background image — sits behind the gradient glow */
.post-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('../assets/images/bg/secure.webp');
  background-size: cover;
  background-position: center 40%;
  background-repeat: no-repeat;
  opacity: 0.07;
  /* Fade edges so it blends seamlessly with the page */
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 45%, black 30%, transparent 80%);
  mask-image: radial-gradient(ellipse 90% 80% at 50% 45%, black 30%, transparent 80%);
  pointer-events: none;
  z-index: 0;
}

/* Keep all hero content above the image layer */
.post-hero > * {
  position: relative;
  z-index: 1;
}


.post-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-16);
  margin-bottom: var(--sp-24);
  flex-wrap: wrap;
}

.post-meta-item {
  font-size: 0.75rem;
  color: var(--clr-white-45);
}

.post-meta-cat {
  font-size: 0.7rem;
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-accent);
  background: var(--clr-accent-dim);
  padding: var(--sp-4) var(--sp-8);
  border-radius: var(--radius-sm);
}

.post-hero-headline {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: var(--fw-extrabold);
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--clr-white);
  max-width: 800px;
  margin: 0 auto var(--sp-16);
}

.post-hero-desc {
  font-size: 1.05rem;
  color: var(--clr-white-55);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ── Post Body ───────────────────────────────────────────── */
.post-body {
  padding: var(--sp-48) 0 var(--sp-80);
  background: var(--clr-bg);
}

.post-content {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 var(--sp-24);
}

.post-content h2 {
  font-size: 1.5rem;
  font-weight: var(--fw-bold);
  color: var(--clr-white);
  margin: var(--sp-48) 0 var(--sp-16);
  line-height: 1.3;
}

.post-content h3 {
  font-size: 1.15rem;
  font-weight: var(--fw-semibold);
  color: var(--clr-white-90);
  margin: var(--sp-32) 0 var(--sp-12);
}

.post-content p {
  font-size: 1rem;
  color: var(--clr-white-70);
  line-height: 1.8;
  margin-bottom: var(--sp-24);
}

.post-content ul,
.post-content ol {
  margin: 0 0 var(--sp-24) var(--sp-24);
  color: var(--clr-white-70);
}

.post-content li {
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: var(--sp-8);
}

.post-content strong {
  color: var(--clr-white);
  font-weight: var(--fw-semibold);
}

.post-content a {
  color: var(--clr-accent);
  text-decoration: underline;
  text-decoration-color: rgba(78, 205, 196, 0.3);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--ease-fast);
}

.post-content a:hover {
  text-decoration-color: var(--clr-accent);
}

.post-content blockquote {
  margin: var(--sp-32) 0;
  padding: var(--sp-24) var(--sp-32);
  border-left: 3px solid var(--clr-accent);
  background: var(--clr-white-05);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.post-content blockquote p {
  color: var(--clr-white-90);
  font-style: italic;
  margin-bottom: 0;
}

/* ── Post Table ──────────────────────────────────────────── */
.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--sp-32) 0;
  font-size: 0.9rem;
  background: var(--clr-white-02);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--clr-white-05);
}

.post-content th {
  background: var(--clr-white-05);
  color: var(--clr-white);
  font-weight: var(--fw-semibold);
  text-align: left;
  padding: var(--sp-12) var(--sp-16);
  border-bottom: 1px solid var(--clr-white-10);
}

.post-content td {
  padding: var(--sp-12) var(--sp-16);
  color: var(--clr-white-70);
  border-bottom: 1px solid var(--clr-white-05);
}

.post-content tr:last-child td {
  border-bottom: none;
}

.post-content tr:hover td {
  background: var(--clr-white-05);
  color: var(--clr-white);
}

/* ── Key Takeaways Box ───────────────────────────────────── */
.post-key-takeaways {
  background: linear-gradient(135deg, rgba(78, 205, 196, 0.05) 0%, var(--clr-white-02) 100%);
  border-left: 4px solid var(--clr-accent);
  padding: var(--sp-24);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  margin: var(--sp-32) 0;
}

.post-key-takeaways h4 {
  font-size: 1.05rem;
  color: var(--clr-white);
  margin-top: 0;
  margin-bottom: var(--sp-12);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.post-key-takeaways ul {
  margin-bottom: 0;
  padding-left: var(--sp-20);
}

.post-key-takeaways li {
  color: var(--clr-white-80);
  margin-bottom: var(--sp-8);
}

.post-key-takeaways li:last-child {
  margin-bottom: 0;
}

/* ── Post CTA ────────────────────────────────────────────── */
.post-cta {
  max-width: 680px;
  margin: 0 auto var(--sp-64);
  padding: var(--sp-32);
  background: linear-gradient(135deg, rgba(78, 205, 196, 0.08) 0%, var(--clr-white-05) 100%);
  border: 1px solid rgba(78, 205, 196, 0.15);
  border-radius: var(--radius-lg);
  text-align: center;
}

.post-cta h3 {
  font-size: 1.2rem;
  font-weight: var(--fw-bold);
  color: var(--clr-white);
  margin-bottom: var(--sp-8);
}

.post-cta p {
  font-size: 0.9rem;
  color: var(--clr-white-55);
  margin-bottom: var(--sp-24);
}

.post-cta .blog-cta-btn {
  font-size: 0.85rem;
}

/* ── Back link ───────────────────────────────────────────── */
.post-back {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-8);
  font-size: 0.85rem;
  color: var(--clr-white-45);
  text-decoration: none;
  margin-bottom: var(--sp-32);
  transition: color var(--ease-fast);
}

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

/* ── Footer (shared) ─────────────────────────────────────── */
.footer {
  padding: var(--sp-48) 0;
  border-top: 1px solid var(--clr-white-05);
  background: var(--clr-bg);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-16);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--sp-24);
}

.footer-logo {
  font-size: 1.1rem;
  font-weight: var(--fw-extrabold);
  color: var(--clr-white);
  letter-spacing: 0.04em;
  text-decoration: none;
}

.footer-links {
  display: flex;
  gap: var(--sp-24);
}

.footer-link {
  font-size: 0.8rem;
  color: var(--clr-white-45);
  text-decoration: none;
  transition: color var(--ease-fast);
}

.footer-link:hover {
  color: var(--clr-accent);
}

.footer-link--social {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--clr-white-10);
  color: var(--clr-white-55);
  transition: color var(--ease-fast), border-color var(--ease-fast), background var(--ease-fast), box-shadow var(--ease-fast);
}

.footer-link--social:hover {
  color: var(--clr-accent);
  border-color: rgba(78, 205, 196, 0.4);
  background: rgba(78, 205, 196, 0.08);
  box-shadow: 0 0 16px rgba(78, 205, 196, 0.15);
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--clr-white-20);
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════════════════ */
@media (max-width: 640px) {
  .blog-hero {
    padding: 130px 0 var(--sp-32);
  }

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

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

  .blog-card--featured .blog-card-inner {
    padding: var(--sp-24);
  }

  .blog-card--featured .blog-card-title {
    font-size: 1.25rem;
  }

  .post-hero {
    padding: 130px 0 var(--sp-24);
  }

  .post-content {
    padding: 0 var(--sp-16);
  }

  .post-cta {
    margin-left: var(--sp-16);
    margin-right: var(--sp-16);
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    flex-direction: column;
    gap: var(--sp-8);
  }
}