/*
 * SemiMatrix — Design Tokens & Utility Classes
 * Loaded automatically for all pages via page-head.js.
 *
 * Use these classes instead of inline styles:
 *   <div class="u-mono u-text-accent u-fs-10 u-ls-2">LABEL</div>
 *   <div class="u-border-left-accent u-bg-accent-dim u-radius-8 u-p-18">Card</div>
 *
 * Also defines shared structural classes:
 *   .roadmap-context — used in fab/ and topic/ pages
 */

/* ── Typography ───────────────────────────────────────── */
.u-mono    { font-family: var(--mono, 'Share Tech Mono', monospace) !important; }
.u-display { font-family: var(--display, 'Kanit', sans-serif) !important; }
.u-body    { font-family: var(--body, 'Kanit', sans-serif) !important; }

.u-fs-8   { font-size: 8px !important; }
.u-fs-9   { font-size: 9px !important; }
.u-fs-10  { font-size: 10px !important; }
.u-fs-11  { font-size: 11px !important; }
.u-fs-12  { font-size: 12px !important; }
.u-fs-13  { font-size: 13px !important; }
.u-fs-14  { font-size: 14px !important; }

.u-fw-400 { font-weight: 400 !important; }
.u-fw-600 { font-weight: 600 !important; }
.u-fw-700 { font-weight: 700 !important; }

.u-ls-1   { letter-spacing: 1px !important; }
.u-ls-2   { letter-spacing: 2px !important; }
.u-ls-3   { letter-spacing: 3px !important; }
.u-ls-4   { letter-spacing: 4px !important; }
.u-ls-5   { letter-spacing: 5px !important; }

.u-uppercase { text-transform: uppercase !important; }
.u-lh-16     { line-height: 1.6 !important; }
.u-lh-17     { line-height: 1.7 !important; }

/* ── Colors ───────────────────────────────────────────── */
.u-text-accent  { color: var(--accent) !important; }
.u-text-accent2 { color: var(--accent2) !important; }
.u-text-accent3 { color: var(--accent3) !important; }
.u-text-accent4 { color: var(--accent4) !important; }
.u-text-dim     { color: var(--text-dim) !important; }
.u-text-mid     { color: var(--text-mid) !important; }
.u-text         { color: var(--text) !important; }

/* ── Backgrounds ──────────────────────────────────────── */
.u-bg-accent-dim  { background: var(--accent-dim) !important; }
.u-bg-bg          { background: var(--bg) !important; }
.u-bg-bg2         { background: var(--bg2) !important; }
.u-bg-transparent { background: transparent !important; }

/* ── Borders ──────────────────────────────────────────── */
.u-border              { border: 1px solid var(--border) !important; }
.u-border-accent       { border: 1px solid var(--accent) !important; }
.u-border-none         { border: none !important; }
.u-border-left-accent  { border-left: 3px solid var(--accent) !important; }

/* ── Spacing ──────────────────────────────────────────── */
.u-mt-0  { margin-top: 0 !important; }
.u-mt-8  { margin-top: 8px !important; }
.u-mt-12 { margin-top: 12px !important; }
.u-mt-16 { margin-top: 16px !important; }
.u-mt-24 { margin-top: 24px !important; }
.u-mb-0  { margin-bottom: 0 !important; }
.u-mb-8  { margin-bottom: 8px !important; }
.u-mb-12 { margin-bottom: 12px !important; }
.u-mb-16 { margin-bottom: 16px !important; }
.u-mb-24 { margin-bottom: 24px !important; }
.u-p-0   { padding: 0 !important; }

/* ── Layout ───────────────────────────────────────────── */
.u-flex         { display: flex !important; }
.u-flex-col     { flex-direction: column !important; }
.u-items-center { align-items: center !important; }
.u-gap-6        { gap: 6px !important; }
.u-gap-8        { gap: 8px !important; }
.u-gap-12       { gap: 12px !important; }
.u-gap-16       { gap: 16px !important; }
.u-wrap         { flex-wrap: wrap !important; }

/* ── Border radius ────────────────────────────────────── */
.u-radius-4    { border-radius: 4px !important; }
.u-radius-6    { border-radius: 6px !important; }
.u-radius-8    { border-radius: 8px !important; }
.u-radius-12   { border-radius: 12px !important; }
.u-radius-full { border-radius: 9999px !important; }

/* ── Elite Utilities ────────────────────────────────────── */
.glass {
  background: rgba(12, 23, 32, 0.65) !important;
  backdrop-filter: blur(16px) saturate(160%) !important;
  -webkit-backdrop-filter: blur(16px) saturate(160%) !important;
  border: 1px solid rgba(255,255,255,0.08) !important;
}

.glow-box {
  box-shadow: 0 0 24px var(--accent-glow) !important;
}

.text-gradient {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 50%, var(--accent4) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ─────────────────────────────────────────────────────────
   ROADMAP CONTEXT BLOCK
   Used in fab/ and topic/ pages.
   Replace long inline-style divs with these classes:

   <div class="roadmap-context">
     <div class="rc-label">📍 CAREER ROADMAP CONTEXT</div>
     <div class="rc-body">
       <strong>STAGE XX — TITLE</strong>: subtitle<br>
       <span class="rc-desc">...</span><br>
       <span class="rc-equipment">Equipment: ...</span><br>
       <span class="rc-related">Related: <a href="...">Link</a></span><br>
       <span class="rc-path">Path: ...</span>
     </div>
   </div>
   ───────────────────────────────────────────────────────── */
.roadmap-context {
  margin: 24px 0;
  padding: 16px 20px;
  border: 1px solid var(--border);
  background: var(--accent-dim);
  border-left: 3px solid var(--accent);
  border-radius: 0 10px 10px 0;
}

.rc-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.rc-body {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.7;
}
.rc-body strong {
  color: var(--text);
}
.rc-desc {
  font-size: 12px;
}
.rc-equipment {
  color: var(--accent4);
}
.rc-related {
  font-size: 11px;
  margin-top: 6px;
  display: inline-block;
}
.rc-related a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-dim);
  transition: border-color 0.2s;
}
.rc-related a:hover {
  border-color: var(--accent);
}
.rc-path {
  font-size: 10px;
  color: var(--text-dim);
  font-family: var(--mono);
}

/* ── Clean-up Utility & Skeleton Helper Classes ───────── */
.is-hidden { display: none !important; }
.primary { background: var(--accent) !important; color: #020617 !important; }
.icon { display: inline-flex; align-items: center; justify-content: center; }
.no-glossary { pointer-events: auto; }

.skeleton-row {
  display: block;
  width: 100%;
  height: 16px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 6px;
  position: relative;
  overflow: hidden;
  margin-bottom: 12px;
}
.skeleton-row::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.06), transparent);
  animation: design-tokens-shimmer 1.6s infinite;
}
.skeleton-text {
  color: transparent !important;
  user-select: none;
  pointer-events: none;
}
.skel-med { width: 50% !important; }
.skel-short { width: 30% !important; }
.skel-mt-8 { margin-top: 8px !important; }
.skel-full { width: 100% !important; }

@keyframes design-tokens-shimmer {
  100% { transform: translateX(100%); }
}

.toast {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  background: var(--surface-2, rgba(30,41,59,0.96));
  border: 1px solid var(--border, rgba(255,255,255,0.06));
  border-radius: 16px;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-float);
  transform: translateY(80px);
  opacity: 0;
  transition: all .3s cubic-bezier(.34,1.56,.64,1);
  pointer-events: none;
}
.toast.show {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.toast-icon {
  font-size: 16px;
  margin-right: 4px;
}
.toast-msg {
  font-size: 13px;
  font-weight: 500;
}
.toast-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: var(--accent);
  width: 100%;
}