/**
 * CMTA Cyber - resources.css
 * Styles specific to the resource hub and individual resource pages
 * Inherits design tokens from main.css
 */

/* ── Resource Hub Layout ── */
.resources-hero {
  padding: 7rem 5% 4rem;
  background: var(--bg);
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.resources-hero-grid {
  position: absolute; inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}

.resources-hero-content { position: relative; z-index: 2; max-width: 700px; }

/* ── Search Bar ── */
.resource-search-wrap {
  position: relative;
  max-width: 520px;
  margin: 2rem 0;
}

.resource-search {
  width: 100%;
  background: var(--bg2);
  border: 1px solid var(--border-md);
  border-radius: var(--radius);
  padding: 0.85rem 1rem 0.85rem 2.8rem;
  color: var(--white);
  font-family: var(--mono);
  font-size: 0.82rem;
  outline: none;
  transition: border-color var(--transition);
  letter-spacing: 0.02em;
}

.resource-search::placeholder { color: var(--text-muted); }
.resource-search:focus { border-color: var(--accent); }

.resource-search-icon {
  position: absolute;
  left: 0.9rem; top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
  pointer-events: none;
}

/* ── Category Grid (Hub) ── */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.cat-card {
  background: var(--bg);
  padding: 1.8rem 1.6rem;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: background var(--transition);
  display: block;
}

.cat-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  height: 2px; width: 0;
  background: var(--accent);
  transition: width 0.35s ease;
}

.cat-card:hover { background: var(--surface); opacity: 1; }
.cat-card:hover::after { width: 100%; }

.cat-card-tag {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 0.7rem;
  opacity: 0.75;
}

.cat-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.45rem;
  letter-spacing: -0.01em;
}

.cat-card p {
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.65;
  margin-bottom: 0.9rem;
}

.cat-card-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.cat-topic {
  font-family: var(--mono);
  font-size: 0.58rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 0.12rem 0.45rem;
  border-radius: var(--radius);
  letter-spacing: 0.05em;
  transition: border-color var(--transition), color var(--transition);
}

.cat-card:hover .cat-topic {
  border-color: rgba(0,255,170,0.2);
  color: var(--text-dim);
}

.cat-card-arrow {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: color var(--transition), transform var(--transition);
}
.cat-card:hover .cat-card-arrow {
  color: var(--accent);
  transform: translate(2px, -2px);
}

/* ── Individual Resource Page Layout ── */
.resource-page {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 0;
  min-height: 100vh;
  padding-top: 60px;
}

/* Sidebar */
.resource-sidebar {
  position: sticky;
  top: 60px;
  height: calc(100vh - 60px);
  overflow-y: auto;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  padding: 2rem 0;
}

.sidebar-section {
  margin-bottom: 2rem;
}

.sidebar-label {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0 1.5rem;
  margin-bottom: 0.5rem;
}

.sidebar-link {
  display: block;
  font-size: 0.82rem;
  color: var(--text-dim);
  text-decoration: none;
  padding: 0.45rem 1.5rem;
  border-left: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.sidebar-link:hover {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--accent-dim);
  opacity: 1;
}

.sidebar-link.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--accent-dim);
  font-weight: 500;
}

.sidebar-back {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.5rem 1.5rem 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
  letter-spacing: 0.06em;
  transition: color var(--transition);
}
.sidebar-back:hover { color: var(--accent); opacity: 1; }

/* Main content area */
.resource-content {
  padding: 3rem 4%;
  max-width: 900px;
}

/* ── Breadcrumb ── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  letter-spacing: 0.05em;
}
.breadcrumb a { color: var(--text-muted); text-decoration: none; transition: color var(--transition); }
.breadcrumb a:hover { color: var(--accent); opacity: 1; }
.breadcrumb span { color: var(--text-muted); }
.breadcrumb-current { color: var(--accent); }

/* ── Resource Content Typography ── */
.resource-content h1 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin-bottom: 0.5rem;
}

.resource-content .page-meta {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.resource-content h2 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  margin: 2.5rem 0 1rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
  letter-spacing: -0.01em;
}

.resource-content h2:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.resource-content h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin: 1.8rem 0 0.75rem;
}

.resource-content p {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.85;
  margin-bottom: 1rem;
}

.resource-content ul,
.resource-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.resource-content li {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.8;
  margin-bottom: 0.3rem;
}

.resource-content li strong,
.resource-content p strong {
  color: var(--white);
  font-weight: 600;
}

.resource-content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(0,255,170,0.2);
  transition: border-color var(--transition);
}
.resource-content a:hover {
  border-color: var(--accent);
  opacity: 1;
}

/* ── Code Blocks ── */
.code-block {
  position: relative;
  margin: 1.2rem 0;
  background: var(--bg3);
  border: 1px solid var(--border-md);
  border-radius: var(--radius);
  overflow: hidden;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
}

.code-block-lang {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.75;
}

.copy-btn {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--text-muted);
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.2rem 0.6rem;
  cursor: pointer;
  letter-spacing: 0.06em;
  transition: color var(--transition), border-color var(--transition);
}

.copy-btn:hover {
  color: var(--accent);
  border-color: var(--border-md);
}

.copy-btn.copied {
  color: var(--green);
  border-color: rgba(39,201,63,0.3);
}

.code-block pre {
  padding: 1rem 1.2rem;
  overflow-x: auto;
  margin: 0;
}

.code-block code {
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.8;
  color: var(--text);
  white-space: pre;
}

/* Inline code */
.resource-content code:not(.code-block code) {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius);
}

/* ── Info / Warning / Tip Callouts ── */
.callout {
  padding: 1rem 1.2rem;
  border-radius: var(--radius);
  margin: 1.2rem 0;
  font-size: 0.86rem;
  line-height: 1.75;
}

.callout-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.callout-tip {
  background: rgba(0,255,170,0.05);
  border-left: 2px solid var(--accent);
  color: var(--text-dim);
}
.callout-tip .callout-label { color: var(--accent); }

.callout-warn {
  background: rgba(255,189,46,0.05);
  border-left: 2px solid var(--yellow);
  color: var(--text-dim);
}
.callout-warn .callout-label { color: var(--yellow); }

.callout-danger {
  background: rgba(255,71,87,0.05);
  border-left: 2px solid var(--red);
  color: var(--text-dim);
}
.callout-danger .callout-label { color: var(--red); }

.callout-info {
  background: rgba(74,158,255,0.05);
  border-left: 2px solid var(--blue);
  color: var(--text-dim);
}
.callout-info .callout-label { color: var(--blue); }

/* ── Reference Tables ── */
.ref-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.2rem 0;
  font-size: 0.84rem;
}

.ref-table th {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: left;
  padding: 0.6rem 1rem;
  background: var(--bg2);
  border-bottom: 1px solid var(--border-md);
}

.ref-table td {
  padding: 0.6rem 1rem;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  line-height: 1.65;
}

.ref-table tr:hover td { background: var(--surface); }

.ref-table td:first-child {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--white);
  white-space: nowrap;
}

.ref-table td code {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 0.1rem 0.35rem;
  border-radius: var(--radius);
}

/* ── Tags / Badges ── */
.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius);
  border: 1px solid;
}

.badge-green  { color: var(--green);  border-color: rgba(39,201,63,0.3);  background: rgba(39,201,63,0.05); }
.badge-yellow { color: var(--yellow); border-color: rgba(255,189,46,0.3); background: rgba(255,189,46,0.05); }
.badge-red    { color: var(--red);    border-color: rgba(255,71,87,0.3);  background: rgba(255,71,87,0.05); }
.badge-blue   { color: var(--blue);   border-color: rgba(74,158,255,0.3); background: rgba(74,158,255,0.05); }
.badge-accent { color: var(--accent); border-color: rgba(0,255,170,0.3);  background: var(--accent-dim); }

/* ── Related Resources ── */
.related-resources {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.related-card {
  display: block;
  padding: 1rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  transition: border-color var(--transition), background var(--transition);
}

.related-card:hover {
  border-color: var(--border-md);
  background: var(--surface);
  opacity: 1;
}

.related-card-tag {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 0.4rem;
  opacity: 0.7;
}

.related-card h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
}

/* ── Progress / TOC indicator ── */
.reading-progress {
  position: fixed;
  top: 60px; left: 0; right: 0;
  height: 2px;
  background: var(--border);
  z-index: 999;
}

.reading-progress-bar {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width 0.1s linear;
}

/* ── Responsive for resource pages ── */
@media (max-width: 900px) {
  .resource-page {
    grid-template-columns: 1fr;
  }

  .resource-sidebar {
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
  }

  .resource-content {
    padding: 2rem 5%;
  }
}

@media (max-width: 640px) {
  .cat-grid {
    grid-template-columns: 1fr;
  }

  .resource-content h2 {
    font-size: 1.15rem;
  }

  .ref-table {
    display: block;
    overflow-x: auto;
  }
}