/* =========================================================
   BLOG — terminal-themed blog styles
   ========================================================= */

.blog-nav {
  display: flex;
  gap: 24px;
  flex-shrink: 0;
}

.blog-nav a {
  text-decoration: none;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

.blog-nav a:hover,
.blog-nav a.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

/* ---- Main ---- */
.blog-main {
  padding: 64px 0 80px;
  min-height: 80vh;
}

/* ---- Header ---- */
.blog-title {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text);
}

.blog-subtitle {
  font-size: clamp(1rem, 0.3vw + 0.92rem, 1.12rem);
  color: var(--text-muted);
  line-height: 1.65;
  margin: 0 0 2.25rem;
}

/* ---- Filters ---- */
.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 2.5rem;
}

.blog-filter-btn {
  padding: var(--btn-pad-sm);
  border-radius: var(--btn-radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: var(--btn-weight);
  cursor: pointer;
  transition:
    background-color var(--btn-t),
    border-color var(--btn-t),
    color var(--btn-t),
    transform var(--btn-t),
    box-shadow var(--btn-t);
}

.blog-filter-btn:hover {
  border-color: var(--accent);
  color: var(--text);
  transform: translateY(var(--btn-lift));
  box-shadow: var(--btn-shadow);
}
.blog-filter-btn:active {
  transform: translateY(0) scale(0.98);
  box-shadow: none;
}
.blog-filter-btn:disabled {
  opacity: 0.55;
  pointer-events: none;
}

.blog-filter-btn.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-btn-text);
}

/* ---- Post list ---- */
.blog-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.blog-list-empty {
  text-align: center;
  padding: 4rem 0;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 1rem;
}

.blog-card {
  display: block;
  text-decoration: none;
  padding: 20px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  transition: border-color 0.15s, transform 0.1s;
}

.blog-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.blog-card-top {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.blog-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.blog-card-icon svg {
  width: 22px;
  height: 22px;
}

.blog-card-icon.icon-docker {
  background: #1e2a3a;
  color: #60a5fa;
}

.blog-card-icon.icon-terminal {
  background: #0f2b0f;
  color: #4ade80;
}

.blog-card-body {
  flex: 1;
  min-width: 0;
}

.blog-card-head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.blog-card-title {
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 0.25vw + 0.98rem, 1.18rem);
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
  flex: 1;
  min-width: 200px;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.blog-card-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ---- Type badge ---- */
.blog-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

.blog-badge.is-learning {
  background: var(--accent-soft);
  color: var(--accent-contrast);
}

.blog-badge.is-problem-solved {
  background: #e9efe6;
  color: #46704f;
}

html[data-theme="dark"] .blog-badge.is-problem-solved {
  background: #13251a;
  color: #4ade80;
}

/* ---- Category chip ---- */
.blog-category {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-contrast);
  font-weight: 500;
}

.blog-card-summary {
  font-size: clamp(0.98rem, 0.2vw + 0.93rem, 1.06rem);
  color: var(--text-muted);
  line-height: 1.65;
  margin: 0;
}

.blog-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.blog-card-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  background: var(--surface-2);
  padding: 3px 10px;
  border-radius: 6px;
}

/* ---- Single post ---- */
.blog-post {
  width: 100%;
  max-width: none;
  padding: 0 clamp(0px, 3vw, 56px);
}

.blog-post-header,
.blog-md {
  max-width: 1200px;
}

.blog-post-back {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  margin-bottom: 2rem;
}

.blog-post-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.blog-post-title {
  font-family: var(--font-body);
  font-size: clamp(1.7rem, 3.2vw, 2.35rem);
  font-weight: 700;
  margin: 0 0 12px;
  line-height: 1.3;
}

.blog-post-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.blog-post-summary {
  font-size: clamp(1.04rem, 0.35vw + 0.95rem, 1.18rem);
  color: var(--text-muted);
  line-height: 1.7;
  margin: 0;
}

.blog-post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.blog-post-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-contrast);
  background: var(--accent-soft);
  padding: 3px 10px;
  border-radius: 6px;
}

/* ---- Markdown body ---- */
.blog-md {
  font-size: clamp(1rem, 0.3vw + 0.93rem, 1.12rem);
  line-height: 1.8;
  color: var(--text);
}

.blog-md h2 {
  font-family: var(--font-body);
  font-size: clamp(1.35rem, 1.1vw + 1rem, 1.75rem);
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

.blog-md h3 {
  font-size: clamp(1.12rem, 0.7vw + 0.95rem, 1.4rem);
  font-weight: 600;
  line-height: 1.4;
  margin: 2rem 0 0.75rem;
}

.blog-md p {
  margin: 0 0 1.2rem;
}

.blog-md ul,
.blog-md ol {
  margin: 0 0 1rem;
  padding-left: 1.4rem;
}

.blog-md li {
  margin-bottom: 0.55rem;
}

.blog-md strong {
  font-weight: 600;
}

.blog-md a {
  color: var(--accent-contrast);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.blog-md a:hover {
  text-decoration-thickness: 2px;
}

.blog-md hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* ---- Code blocks ---- */
.blog-md pre {
  background: #0d1526;
  border: 1px solid #1e3a5f;
  border-radius: var(--radius-m);
  padding: 18px 20px;
  overflow-x: auto;
  margin: 0 0 1.2rem;
  font-size: 0.88rem;
  line-height: 1.55;
}

html:not([data-theme="dark"]) .blog-md pre {
  background: var(--code-bg);
  border-color: #38352e;
}

.blog-md pre code {
  background: none;
  padding: 0;
  border: none;
  font-size: inherit;
  color: #e8eef7;
}

html:not([data-theme="dark"]) .blog-md pre code {
  color: var(--code-text);
}

.blog-md code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--surface-2);
  padding: 2px 7px;
  border-radius: 5px;
  color: var(--accent-contrast);
}

/* ---- Tables ---- */
.blog-md table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1.2rem;
  font-size: 0.94em;
}

.blog-md th,
.blog-md td {
  text-align: left;
  padding: 10px 14px;
  border: 1px solid var(--border);
}

.blog-md th {
  background: var(--surface-2);
  font-weight: 600;
}

.blog-md tr:nth-child(even) td {
  background: color-mix(in srgb, var(--surface-2) 40%, transparent);
}

/* ---- Loading ---- */
.blog-loading {
  text-align: center;
  padding: 4rem 0;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.blog-loading::after {
  content: "";
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-left: 10px;
  vertical-align: middle;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ---- Responsive ---- */
@media (min-width: 481px) and (max-width: 960px) {
  .menu-toggle {
    display: none;
  }
}

@media (max-width: 480px) {
  .blog-nav {
    position: fixed;
    top: var(--topbar-height);
    left: 0;
    right: auto;
    height: calc(100dvh - var(--topbar-height));
    width: 240px;
    background: var(--surface);
    border-inline-end: 1px solid var(--border);
    flex-direction: column;
    gap: 0;
    padding-top: 20px;
    transform: translateX(-100%);
    visibility: hidden;
    pointer-events: none;
    transition:
      transform 0.3s ease,
      visibility 0.3s ease;
    box-shadow: var(--shadow);
    z-index: 60;
  }

  .blog-nav.open {
    transform: translateX(0);
    visibility: visible;
    pointer-events: auto;
  }

  .blog-nav a {
    position: relative;
    padding-block: 18px;
    padding-inline: 25px;
    border-bottom: 1px solid var(--border);
  }

  /* Keep the row separator. The active mark is the start-edge bar below,
     not the desktop underline (border-bottom-color). */
  .blog-nav a.active {
    border-bottom-color: var(--border);
  }

  .blog-nav a.active::after {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    height: auto;
    background: var(--accent);
    inset-inline-start: 0;
    inset-block: 0;
  }

  html[dir="rtl"] .blog-nav {
    left: auto;
    right: 0;
    transform: translateX(100%);
  }

  html[dir="rtl"] .blog-nav.open {
    transform: translateX(0);
  }
}

@media (max-width: 640px) {
  .blog-main {
    padding: 48px 0 64px;
  }

  .blog-card {
    padding: 16px 18px;
  }

  .blog-card-icon {
    width: 38px;
    height: 38px;
    border-radius: 8px;
  }

  .blog-card-icon svg {
    width: 18px;
    height: 18px;
  }

  .blog-card-title {
    font-size: 1.04rem;
  }

  .blog-post {
    max-width: 100%;
    padding: 0;
  }

  .blog-post-title {
    font-size: 1.7rem;
  }

  .blog-md {
    font-size: 1rem;
    line-height: 1.75;
  }

  .blog-md pre {
    padding: 14px 16px;
    font-size: 0.82rem;
  }
}

/* ---- RTL ---- */
html[dir="rtl"] .blog-md pre {
  direction: ltr;
  text-align: left;
}

html[dir="rtl"] .blog-md code {
  direction: ltr;
  unicode-bidi: isolate;
}

html[dir="rtl"] .blog-md table {
  direction: ltr;
}

html[dir="rtl"] .blog-md th,
html[dir="rtl"] .blog-md td {
  text-align: left;
}

html[dir="rtl"] .blog-md ul,
html[dir="rtl"] .blog-md ol {
  padding-left: 0;
  padding-right: 1.4rem;
}