/* ==========================================================================
   Help section — layout, sidebar, demo stages, lifecycle clock, campaigns, tokens
   ========================================================================== */

/* ---------- Layout ---------- */
.help-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--sp-6);
  align-items: start;
}

.help-content {
  max-width: 800px;
  min-width: 0;
}

/* ---------- Sidebar ---------- */
.help-sidebar {
  position: sticky;
  top: calc(var(--header-h) + var(--sp-3));
}

.help-sidebar nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.help-sidebar nav li {
  margin-bottom: 2px;
}

.help-sidebar nav a {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  font-size: var(--fs-sm);
  transition: background .15s ease;
}

.help-sidebar nav a:hover {
  background: var(--surface-alt);
}

.help-sidebar nav a[aria-current="page"] {
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
}

.help-sidebar .help-topic-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Desktop: show plain nav, hide collapsible details */
.help-sidebar-nav { display: block; }
.help-sidebar-toggle { display: none; }

/* ---------- Breadcrumb ---------- */
.help-breadcrumb {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin-bottom: var(--sp-4);
}

.help-breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}

.help-breadcrumb a:hover {
  color: var(--color-primary);
}

.help-breadcrumb .sep {
  margin: 0 var(--sp-1);
}

/* ---------- Index grid ---------- */
.help-index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--sp-4);
}

.help-topic-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  text-decoration: none;
  color: var(--text);
  transition: border-color .15s ease, box-shadow .15s ease;
}

.help-topic-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
}

.help-topic-card .card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--color-primary) 12%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-3);
  color: var(--color-primary);
}

.help-topic-card h3 {
  margin: 0 0 var(--sp-1);
  font-size: var(--fs-base);
}

.help-topic-card p {
  margin: 0;
  font-size: var(--fs-sm);
  color: var(--text-muted);
  line-height: 1.5;
}

/* ---------- Demo block ---------- */
.help-demo {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  margin: var(--sp-6) 0;
  background: var(--surface);
}

.help-demo .demo-title {
  font-size: var(--fs-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--text-muted);
  margin: 0 0 var(--sp-4);
}

.help-demo-stage {
  min-height: 140px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-4);
}

.help-demo-controls {
  display: flex;
  gap: var(--sp-2);
  justify-content: center;
  margin-top: var(--sp-4);
  flex-wrap: wrap;
}

/* ---------- Lifecycle status bar ---------- */
.lifecycle-bar {
  display: flex;
  gap: 4px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.lifecycle-step {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: var(--fs-sm);
  color: var(--text-muted);
  border: 1px solid var(--border);
  transition: all .3s ease;
  white-space: nowrap;
}

.lifecycle-step.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.lifecycle-step.current {
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 35%, transparent);
}

.lifecycle-sep {
  color: var(--border);
  font-size: var(--fs-sm);
  margin: 0 2px;
}

/* ---------- Clock demo ---------- */
.help-demo-clock {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  border: 4px solid var(--border);
  position: relative;
  background: var(--surface);
}

.help-demo-clock .clock-face {
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  border: 1px dashed var(--border);
}

.help-demo-clock .hand {
  position: absolute;
  bottom: 50%;
  left: 50%;
  width: 3px;
  height: 42%;
  background: var(--color-primary);
  transform-origin: bottom center;
  border-radius: 2px;
  transform: translateX(-50%) rotate(0deg);
}

.help-demo-stage.clock-running .help-demo-clock .hand {
  animation: clock-sweep 15s linear forwards;
}

@keyframes clock-sweep {
  from { transform: translateX(-50%) rotate(0deg); }
  to   { transform: translateX(-50%) rotate(360deg); }
}

.help-demo-clock .center-dot {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

/* ---------- URL input row ---------- */
.help-url-row {
  display: flex;
  gap: var(--sp-2);
  width: 100%;
  max-width: 480px;
}

.help-url-row input {
  flex: 1;
  padding: var(--sp-2) var(--sp-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: var(--fs-sm);
  font-family: inherit;
}

.help-url-row input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 25%, transparent);
}

/* ---------- Mock backlink card ---------- */
.mock-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--sp-3) var(--sp-4);
  text-align: left;
  width: 100%;
  max-width: 420px;
  font-size: var(--fs-sm);
}

.mock-card .card-url {
  font-weight: 600;
  color: var(--color-primary);
  word-break: break-all;
}

.mock-card .card-meta {
  color: var(--text-muted);
  margin-top: 4px;
  font-size: .85em;
}

/* ---------- Campaign cards ---------- */
.campaign-grid {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
  justify-content: center;
}

.campaign-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--sp-4);
  min-width: 170px;
  text-align: center;
  transition: border-color .15s ease;
}

.campaign-card .campaign-icon {
  font-size: 1.5em;
  margin-bottom: var(--sp-1);
}

.campaign-card .campaign-name {
  font-weight: 600;
  margin: 0 0 var(--sp-2);
}

.campaign-card .campaign-stat {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin: 2px 0;
}

.unassigned-list {
  width: 100%;
  max-width: 480px;
}

.unassigned-list .mock-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-2) var(--sp-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: var(--sp-1);
  font-size: var(--fs-sm);
}

.unassigned-list .mock-row .link-url {
  color: var(--color-primary);
  word-break: break-all;
  flex: 1;
  margin-right: var(--sp-2);
}

/* ---------- Billing calculator ---------- */
.billing-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  text-align: center;
  width: 100%;
  max-width: 420px;
}

.billing-card .progress-wrap {
  background: var(--border);
  border-radius: 10px;
  height: 14px;
  overflow: hidden;
  margin: var(--sp-3) 0;
}

.billing-card .progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 10px;
  transition: width .35s ease;
  width: 0%;
}

.billing-card .billing-amount {
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-primary);
}

.billing-rate-row {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  justify-content: center;
  font-size: var(--fs-sm);
  margin: var(--sp-2) 0;
}

.billing-rate-row input {
  width: 70px;
  padding: 2px 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  text-align: center;
}

/* ---------- Token economy ---------- */
.token-balance {
  font-size: var(--fs-xl);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.token-balance .coin-icon {
  font-size: 1.3em;
}

.action-list {
  width: 100%;
  max-width: 400px;
}

.action-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-2) var(--sp-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: var(--sp-1);
  font-size: var(--fs-sm);
}

.action-row .cost {
  color: var(--text-muted);
  font-weight: 500;
}

.activity-log {
  width: 100%;
  max-width: 420px;
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin-top: var(--sp-3);
}

.activity-log .log-entry {
  padding: var(--sp-1) 0;
  border-bottom: 1px dashed var(--border);
}

/* ---------- Prev / Next nav ---------- */
.help-prev-next {
  display: flex;
  justify-content: space-between;
  margin-top: var(--sp-8);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--border);
  font-size: var(--fs-sm);
}

.help-prev-next a {
  color: var(--color-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}

.help-prev-next a:hover {
  text-decoration: underline;
}

.help-prev-next .spacer {
  flex: 1;
}

/* ---------- Backlink arrow diagram ---------- */
.backlink-diagram {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  font-weight: 600;
}

.backlink-diagram .site-box {
  padding: var(--sp-3) var(--sp-5);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--color-primary) 8%, transparent);
  font-size: var(--fs-sm);
}

.backlink-diagram .arrow-line {
  position: relative;
  height: 3px;
  background: var(--color-primary);
  width: 80px;
  transition: width .3s ease;
}

.backlink-diagram .arrow-line::after {
  content: '';
  position: absolute;
  right: -8px;
  top: -6px;
  border: 7px solid transparent;
  border-left-color: var(--color-primary);
  border-right: 0;
}

/* ---------- Form simulator ---------- */
.help-form {
  width: 100%;
  max-width: 460px;
  text-align: left;
}

.help-form .field {
  margin-bottom: var(--sp-3);
}

.help-form label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 600;
  margin-bottom: 4px;
}

.help-form input {
  width: 100%;
  padding: var(--sp-2) var(--sp-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: var(--fs-sm);
  font-family: inherit;
  box-sizing: border-box;
}

.help-form input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 25%, transparent);
}

.help-form .field-error {
  font-size: .8em;
  color: #ef4444;
  margin-top: 2px;
  display: none;
}

.help-form .field-error.visible {
  display: block;
}

.help-form .field input.input-error {
  border-color: #ef4444;
}

/* ---------- Shared table styles ---------- */
.help-table { width: 100%; max-width: 420px; border-collapse: collapse; font-size: var(--fs-sm); margin-inline: auto; }
.help-table th { padding: var(--sp-2) 0; border-bottom: 2px solid var(--border); text-align: left; }
.help-table th:last-child { text-align: right; }
.help-table td { padding: var(--sp-2) 0; border-bottom: 1px solid var(--border); }
.help-table td:last-child { text-align: right; font-weight: 600; }

/* ---------- Shared select styles ---------- */
.help-select { font-size: var(--fs-sm); padding: 4px 8px; border: 1px solid var(--border); border-radius: var(--radius-sm); font-family: inherit; background: var(--surface); }

/* ---------- Prose typography for help content ---------- */
.help-prose { font-size: var(--fs-base); line-height: 1.75; color: var(--text); }
.help-prose h1 { margin-bottom: var(--sp-2); }
.help-prose h2 { margin-top: var(--sp-7); margin-bottom: var(--sp-3); font-size: var(--fs-2xl); }
.help-prose h3 { margin-top: var(--sp-5); margin-bottom: var(--sp-2); }
.help-prose p, .help-prose ul, .help-prose ol { margin-bottom: var(--sp-4); }
.help-prose ul, .help-prose ol { padding-left: 1.25rem; }
.help-prose li { margin-bottom: var(--sp-1); }
.help-prose a { color: var(--color-primary); }
.help-prose strong { color: var(--heading); }

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .help-layout {
    grid-template-columns: 1fr;
  }

  .help-sidebar {
    position: static;
    margin-bottom: var(--sp-4);
  }

  .help-sidebar-nav { display: none; }

  .help-sidebar-toggle {
    display: block;
    width: 100%;
  }

  .help-sidebar-toggle summary {
    display: flex;
    padding: var(--sp-2) var(--sp-3);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: var(--fs-sm);
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    align-items: center;
    gap: var(--sp-2);
  }

  .help-sidebar-toggle summary::-webkit-details-marker {
    display: none;
  }

  .help-sidebar-toggle nav {
    margin-top: var(--sp-2);
  }

  .backlink-diagram {
    flex-direction: column;
    gap: var(--sp-2);
  }

  .backlink-diagram .arrow-line {
    width: 3px;
    height: 40px;
  }

  .backlink-diagram .arrow-line::after {
    right: -6px;
    top: auto;
    bottom: -8px;
    border: 7px solid transparent;
    border-top-color: var(--color-primary);
    border-bottom: 0;
  }
}