/* =========================================================
   COMPONENTS
   ========================================================= */

/* ---- Site Header ---- */
.aa-header {
  background: var(--aa-bg-panel);
  border-bottom: 1px solid var(--aa-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.aa-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--aa-space-4) 0;
  gap: var(--aa-space-6);
}

.aa-logo {
  display: flex;
  align-items: center;
  gap: var(--aa-space-2);
  font-family: var(--aa-font-mono);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--aa-text-primary);
}
.aa-logo:hover { color: var(--aa-text-primary); }

.aa-logo__mark {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--aa-teal-dim);
  border-radius: var(--aa-radius-sm);
  color: var(--aa-teal);
  background: var(--aa-teal-glow);
  flex-shrink: 0;
}
.aa-logo__mark svg { width: 16px; height: 16px; }

.aa-logo__text .aa-logo__sub {
  display: block;
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: var(--aa-text-muted);
  font-weight: 400;
  text-transform: uppercase;
}

.aa-nav { display: flex; gap: var(--aa-space-6); align-items: center; }
.aa-nav a {
  font-family: var(--aa-font-mono);
  font-size: 0.85rem;
  color: var(--aa-text-secondary);
  letter-spacing: 0.01em;
}
.aa-nav a:hover { color: var(--aa-amber); }
.aa-nav a.is-active { color: var(--aa-teal); }

.aa-nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--aa-border-strong);
  border-radius: var(--aa-radius-sm);
  color: var(--aa-text-primary);
  padding: var(--aa-space-2);
  cursor: pointer;
}

@media (max-width: 820px) {
  .aa-nav { display: none; }
  .aa-nav.is-open {
    display: flex;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    background: var(--aa-bg-panel);
    border-bottom: 1px solid var(--aa-border);
    padding: var(--aa-space-4) var(--aa-space-6);
    gap: var(--aa-space-3);
  }
  .aa-nav-toggle { display: inline-flex; }
}

/* ---- HMI Status Bar — signature element ---- */
.aa-statusbar {
  background: var(--aa-bg-inset);
  border-bottom: 1px solid var(--aa-border);
  font-family: var(--aa-font-mono);
  font-size: 0.72rem;
  color: var(--aa-text-muted);
}
.aa-statusbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--aa-space-2) 0;
  gap: var(--aa-space-4);
  flex-wrap: wrap;
}
.aa-statusbar__group {
  display: flex;
  align-items: center;
  gap: var(--aa-space-6);
}
.aa-statusbar__item {
  display: flex;
  align-items: center;
  gap: var(--aa-space-2);
  white-space: nowrap;
}
.aa-status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--aa-status-ok);
  box-shadow: 0 0 6px var(--aa-status-ok);
  flex-shrink: 0;
}
.aa-status-dot.is-pulse {
  animation: aa-pulse 2s ease-in-out infinite;
}
@keyframes aa-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
@media (prefers-reduced-motion: reduce) {
  .aa-status-dot.is-pulse { animation: none; }
}
.aa-statusbar__clock {
  color: var(--aa-teal);
  letter-spacing: 0.03em;
  font-weight: 500;
}

@media (max-width: 700px) {
  .aa-statusbar__group:nth-child(2) .aa-statusbar__item:not(:last-child) { display: none; }
}

/* ---- Buttons ---- */
.aa-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--aa-space-2);
  font-family: var(--aa-font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: var(--aa-space-3) var(--aa-space-6);
  border-radius: var(--aa-radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
}
.aa-btn--primary {
  background: var(--aa-teal);
  color: #06231f;
}
.aa-btn--primary:hover { background: var(--aa-amber); color: #2a1a02; }
.aa-btn--ghost {
  background: transparent;
  border-color: var(--aa-border-strong);
  color: var(--aa-text-primary);
}
.aa-btn--ghost:hover { border-color: var(--aa-teal); color: var(--aa-teal); }

/* ---- Category badges ---- */
.aa-badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--aa-font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3em 0.65em;
  border-radius: var(--aa-radius-sm);
  border: 1px solid var(--aa-border-strong);
  color: var(--aa-text-secondary);
}
.aa-badge--plc { color: var(--aa-teal); border-color: var(--aa-teal-dim); }
.aa-badge--instrumentation { color: #6fb8e0; border-color: #2f6280; }
.aa-badge--scada-hmi { color: var(--aa-amber); border-color: var(--aa-amber-dim); }
.aa-badge--iiot { color: #b89af0; border-color: #6450a0; }

/* ---- Post Card ---- */
.aa-card {
  background: var(--aa-bg-panel);
  border: 1px solid var(--aa-border);
  border-radius: var(--aa-radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.aa-card:hover {
  border-color: var(--aa-teal-dim);
  transform: translateY(-2px);
}
.aa-card__media {
  aspect-ratio: 16/9;
  background: var(--aa-bg-inset);
  overflow: hidden;
}
.aa-card__media img { width: 100%; height: 100%; object-fit: cover; }
.aa-card__body {
  padding: var(--aa-space-4) var(--aa-space-4) var(--aa-space-6);
  display: flex;
  flex-direction: column;
  gap: var(--aa-space-3);
  flex: 1;
}
.aa-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--aa-space-2);
}
.aa-card__title {
  font-size: 1.05rem;
  margin: 0;
}
.aa-card__title a { color: var(--aa-text-primary); }
.aa-card__title a:hover { color: var(--aa-teal); }
.aa-card__excerpt {
  font-size: 0.9rem;
  color: var(--aa-text-secondary);
  margin: 0;
  flex: 1;
}
.aa-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--aa-font-mono);
  font-size: 0.72rem;
  color: var(--aa-text-muted);
  padding-top: var(--aa-space-2);
  border-top: 1px solid var(--aa-border);
}
.aa-card__author { display: flex; align-items: center; gap: var(--aa-space-2); }
.aa-card__author img {
  width: 20px; height: 20px;
  border-radius: 50%;
  border: 1px solid var(--aa-border-strong);
}

/* ---- Card Grid (used site-wide: homepage, archives, author pages, related posts) ---- */
.aa-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--aa-space-6);
  transition: opacity 0.25s ease;
}
.aa-grid.is-loading { opacity: 0.35; pointer-events: none; }

@media (max-width: 980px) {
  .aa-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .aa-grid { grid-template-columns: 1fr; }
}

.aa-grid__empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--aa-space-16) var(--aa-space-4);
  color: var(--aa-text-muted);
  font-family: var(--aa-font-mono);
  font-size: 0.9rem;
}

.aa-loadmore {
  display: flex;
  justify-content: center;
  margin-top: var(--aa-space-8);
}

/* ---- Section heading with status-style marker ---- */
.aa-section__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--aa-space-6);
  flex-wrap: wrap;
  gap: var(--aa-space-3);
}
.aa-section__head h2 { margin: 0; }
.aa-section__head a {
  font-family: var(--aa-font-mono);
  font-size: 0.8rem;
}

/* ---- Post / page content (the_content() output) ---- */
.aa-post-content {
  font-size: 1.05rem;
  color: var(--aa-text-primary);
}
.aa-post-content > * + * { margin-top: var(--aa-space-4); }
.aa-post-content h2 {
  margin-top: var(--aa-space-12);
  padding-top: var(--aa-space-4);
  border-top: 1px solid var(--aa-border);
}
.aa-post-content h3 { margin-top: var(--aa-space-8); }
.aa-post-content p { color: var(--aa-text-primary); }
.aa-post-content ul, .aa-post-content ol {
  color: var(--aa-text-primary);
  padding-left: 1.4em;
}
.aa-post-content li + li { margin-top: var(--aa-space-2); }
.aa-post-content blockquote {
  border-left: 3px solid var(--aa-amber-dim);
  background: var(--aa-bg-panel);
  padding: var(--aa-space-4) var(--aa-space-6);
  margin: var(--aa-space-6) 0;
  color: var(--aa-text-secondary);
  font-style: italic;
}
.aa-post-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
.aa-post-content th, .aa-post-content td {
  border: 1px solid var(--aa-border);
  padding: var(--aa-space-2) var(--aa-space-3);
  text-align: left;
}
.aa-post-content th {
  background: var(--aa-bg-panel);
  font-family: var(--aa-font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--aa-text-muted);
}
.aa-post-content figure { margin: var(--aa-space-6) 0; }
.aa-post-content figcaption {
  font-family: var(--aa-font-mono);
  font-size: 0.78rem;
  color: var(--aa-text-muted);
  text-align: center;
  margin-top: var(--aa-space-2);
}
.aa-post-content img {
  border-radius: var(--aa-radius-md);
  border: 1px solid var(--aa-border);
}

/* ---- Footer ---- */
.aa-footer {
  background: var(--aa-bg-panel);
  border-top: 1px solid var(--aa-border);
  margin-top: var(--aa-space-16);
  padding: var(--aa-space-12) 0 var(--aa-space-8);
}
.aa-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--aa-space-8);
}
@media (max-width: 700px) {
  .aa-footer__grid { grid-template-columns: 1fr 1fr; }
}
.aa-footer__heading {
  font-family: var(--aa-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--aa-text-muted);
  margin-bottom: var(--aa-space-3);
}
.aa-footer__links { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--aa-space-2); }
.aa-footer__links a { color: var(--aa-text-secondary); font-size: 0.88rem; }
.aa-footer__bottom {
  margin-top: var(--aa-space-8);
  padding-top: var(--aa-space-6);
  border-top: 1px solid var(--aa-border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--aa-space-2);
  font-family: var(--aa-font-mono);
  font-size: 0.75rem;
  color: var(--aa-text-muted);
}