/* =========================================================================
   REGISTRAR GUIDE — /registrar-guide
   Documentation layout: hero + sticky TOC sidebar + long-form content.
   Uses the site design tokens from site.css.
   ========================================================================= */

/* ── Hero ────────────────────────────────────────────────────────────────── */
.guide-hero {
  background: var(--co-purple);
  color: var(--co-lime);
  position: relative;
  overflow: hidden;
  padding: 160px 0 96px;
}
.guide-hero-mark {
  position: absolute;
  right: -4%;
  bottom: -24%;
  width: min(560px, 34vw);
  height: auto;
  pointer-events: none;
  user-select: none;
}
.guide-hero-content { position: relative; z-index: 2; }
.guide-hero h1 {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: clamp(52px, 7.5vw, 132px);
  line-height: 0.88;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: #fff;
  margin: 0;
}
.guide-hero-meta {
  margin-top: 24px;
  font-family: var(--font-mono), ui-monospace, monospace;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.9;
}
.guide-hero-contacts {
  margin-top: 32px;
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  font-family: var(--font-body), system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.6;
}
.guide-hero-contacts a { text-decoration: underline; text-underline-offset: 3px; }

/* ── Layout ──────────────────────────────────────────────────────────────── */
.guide-section {
  background: var(--co-cream);
  color: var(--co-text);
  padding: 72px 0 120px;
}
.guide-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 56px;
  align-items: start;
}

/* ── TOC sidebar ─────────────────────────────────────────────────────────── */
.guide-toc {
  position: sticky;
  top: 96px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  padding: 24px 20px;
  background: #fff;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-1);
}
.guide-toc-title {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 26px;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}
.guide-toc-nav { display: flex; flex-direction: column; gap: 2px; }
.guide-toc-nav a {
  display: block;
  font-family: var(--font-body), system-ui, sans-serif;
  font-size: 13px;
  line-height: 1.35;
  padding: 6px 8px;
  border-radius: 8px;
  color: var(--co-text);
  transition: background var(--dur-fast), color var(--dur-fast);
}
.guide-toc-nav a:hover { background: var(--co-purple); color: var(--co-lime); }
.guide-toc-nav .toc-l2 { font-weight: 600; margin-top: 8px; }
.guide-toc-nav .toc-l3 { padding-left: 22px; opacity: 0.85; }
.guide-toc-nav .toc-num {
  font-family: var(--font-mono), ui-monospace, monospace;
  font-size: 11px;
  opacity: 0.6;
  margin-right: 2px;
}

/* ── Content ─────────────────────────────────────────────────────────────── */
.guide-content {
  font-family: var(--font-body), system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  max-width: 860px;
  color: #5a5068;
}
.guide-content h2,
.guide-content h3,
.guide-content h4 {
  font-family: var(--font-title);
  font-weight: 700;
  color: var(--co-purple);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  line-height: 0.9;
  scroll-margin-top: 96px;
}
.guide-content h2 {
  font-size: clamp(40px, 4.5vw, 64px);
  margin: 72px 0 20px;
  padding-top: 40px;
  border-top: 3px solid var(--co-purple);
}
.guide-content h2:first-child { margin-top: 0; padding-top: 0; border-top: none; }
.guide-content h3 { font-size: clamp(28px, 3vw, 40px); margin: 48px 0 14px; }
.guide-content h4 { font-size: clamp(21px, 2.2vw, 27px); margin: 36px 0 10px; }
.guide-content p { margin: 0 0 16px; }
.guide-content li,
.guide-content td,
.guide-content blockquote,
.guide-content figcaption {
  color: #5a5068;
}
.guide-content ul {
  margin: 0 0 16px;
  padding-left: 24px;
  list-style: disc;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.guide-content a { text-decoration: underline; text-decoration-color: rgba(107,57,255,0.4); text-underline-offset: 3px; }
.guide-content a:hover { text-decoration-color: currentColor; }

/* ── Access gate ─────────────────────────────────────────────────────────── */
.guide-gate-section {
  padding: 132px 0 96px;
}
.guide-gate-shell {
  min-height: calc(100vh - 228px);
  display: grid;
  place-items: center;
}
.guide-gate-card {
  width: min(100%, 620px);
  padding: 40px;
  border-radius: var(--r-xl);
  background:
    radial-gradient(circle at top right, rgba(219,255,0,0.28), transparent 34%),
    linear-gradient(160deg, rgba(255,255,255,0.96), rgba(245,239,224,0.96));
  box-shadow: var(--shadow-2);
  color: var(--co-text);
}
.guide-gate-eyebrow {
  margin-bottom: 12px;
  font-family: var(--font-mono), ui-monospace, monospace;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--co-purple);
}
.guide-gate-card h1 {
  color: var(--co-purple);
  font-size: clamp(42px, 7vw, 72px);
  line-height: 0.9;
  text-transform: uppercase;
}
.guide-gate-copy {
  margin-top: 18px;
  font-size: 17px;
  line-height: 1.7;
}
.guide-gate-form {
  margin-top: 28px;
  display: grid;
  gap: 14px;
}
.guide-gate-label {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--co-purple);
}
.guide-gate-input {
  width: 100%;
  padding: 16px 18px;
  border: 1px solid rgba(107,57,255,0.18);
  border-radius: var(--r-md);
  background: rgba(255,255,255,0.92);
  color: var(--co-text);
  font: inherit;
}
.guide-gate-input::placeholder {
  color: rgba(63,53,87,0.55);
}
.guide-gate-validation {
  color: #8E1F3A;
  font-size: 14px;
  min-height: 20px;
}
.guide-gate-form button[disabled] {
  opacity: 0.72;
  cursor: wait;
}
.guide-gate-alert {
  margin-top: 20px;
  padding: 14px 16px;
  border-radius: var(--r-md);
  font-size: 14px;
  line-height: 1.5;
}
.guide-gate-alert-error {
  background: rgba(142,31,58,0.08);
  border: 1px solid rgba(142,31,58,0.18);
  color: #8E1F3A;
}
.guide-gate-alert-success {
  background: rgba(63,53,87,0.06);
  border: 1px solid rgba(63,53,87,0.16);
  color: var(--co-purple);
}

/* ── Magic-link verifying state ──────────────────────────────────────────── */
/* NOTE: `display` must only be set when the element is NOT [hidden] — author
   CSS always wins over the UA stylesheet's `[hidden]{display:none}`, so an
   unconditional `display: grid` here would show this block even while the
   `hidden` attribute is set. */
.guide-gate-verifying:not([hidden]) {
  display: grid;
  justify-items: center;
  gap: 18px;
  padding: 24px 0 8px;
  text-align: center;
}
.guide-gate-verifying p {
  font-size: 15px;
  color: var(--co-text);
}
.guide-gate-spinner {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 3px solid rgba(63,53,87,0.15);
  border-top-color: var(--co-purple);
  animation: guide-gate-spin 0.8s linear infinite;
}
.guide-gate-spinner-sm {
  width: 16px;
  height: 16px;
  border-width: 2px;
  vertical-align: -3px;
  margin-right: 8px;
}
.guide-gate-submit-loading:not([hidden]) {
  display: inline-flex;
  align-items: center;
}
@keyframes guide-gate-spin {
  to { transform: rotate(360deg); }
}

/* ── Code blocks ─────────────────────────────────────────────────────────── */
.guide-code {
  background: var(--co-purple);
  color: var(--co-lime);
  border-radius: var(--r-md);
  padding: 20px 24px;
  margin: 0 0 20px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.55;
}
.guide-code code { font-family: var(--font-mono), ui-monospace, monospace; }

/* ── Tables ──────────────────────────────────────────────────────────────── */
.guide-table-wrap {
  overflow-x: auto;
  border-radius: var(--r-md);
  box-shadow: var(--shadow-1);
  margin: 0 0 20px;
  background: #fff;
}
.guide-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  min-width: 480px;
}
.guide-table th {
  background: var(--co-purple);
  color: var(--co-lime);
  font-family: var(--font-mono), ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-align: left;
  padding: 14px 18px;
  vertical-align: top;
}
.guide-table td {
  padding: 14px 18px;
  border-bottom: 1px solid rgba(107,57,255,0.1);
  vertical-align: top;
}
.guide-table tbody tr:last-child td { border-bottom: none; }
.guide-table td p { margin: 10px 0 0; }
.guide-table td p:first-child { margin-top: 0; }

/* ── Notes ───────────────────────────────────────────────────────────────── */
.guide-note {
  background: rgba(219,255,0,0.35);
  border-left: 4px solid var(--co-purple);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  padding: 16px 20px;
  margin: 0 0 20px;
  font-size: 14.5px;
}
.guide-note p { margin: 0 0 8px; }
.guide-note p:last-child { margin-bottom: 0; }

/* ── Figures ─────────────────────────────────────────────────────────────── */
.guide-fig {
  margin: 28px 0;
  padding: 24px;
  background: #fff;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-1);
}
.guide-fig img { width: 100%; height: auto; display: block; }
.guide-fig figcaption {
  margin-top: 14px;
  text-align: center;
  font-family: var(--font-mono), ui-monospace, monospace;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.7;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .guide-layout { grid-template-columns: 1fr; gap: 40px; }
  .guide-toc { position: static; max-height: 320px; }
}
@media (max-width: 640px) {
  .guide-gate-section { padding: 112px 0 72px; }
  .guide-gate-card { padding: 28px 22px; }
  .guide-hero { padding: 120px 0 72px; }
  .guide-hero-mark { width: 52vw; right: -10%; bottom: -10%; }
  .guide-section { padding: 48px 0 80px; }
  .guide-content h2 { margin-top: 56px; padding-top: 28px; }
  .guide-code { font-size: 12px; padding: 16px; }
}