/* Online Classes & Tutorial Web Portal: tabs, filters, lists and the learner pages. Mobile first (390 px), GetXtra
   tokens only (Emerald, sharp corners); loaded by the product's pages ("styles" of layouts/admin.php and layouts/app.php). */

.oc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.oc-tabs {
  display: flex;
  gap: var(--space-1);
  margin: var(--space-4) 0;
  overflow-x: auto;
  border-bottom: 1px solid var(--border);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.oc-tabs a {
  flex: 0 0 auto;
  padding: var(--space-2) var(--space-3);
  color: var(--text-muted);
  font-size: var(--text-sm);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
}

.oc-tabs a[aria-current="page"],
.oc-tabs a:hover {
  color: var(--brand-text);
  border-bottom-color: var(--brand);
}

.oc-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: flex-end;
  margin: var(--space-4) 0;
}

.oc-filter .input,
.oc-filter .select,
.oc-filter .field {
  flex: 1 1 160px;
  min-width: 0;
}

.oc-list {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  padding-left: var(--space-4);
}

.oc-list li {
  overflow-wrap: anywhere;
}

.oc-inline,
.oc-inline-form {
  display: inline-flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

.oc-inline-form {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3);
  border: 1px solid var(--border);
  width: 100%;
}

.oc-section-head {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  justify-content: space-between;
}

.oc-fieldset {
  margin: 0;
  padding: var(--space-3);
  border: 1px solid var(--border);
  min-width: 0;
}

.oc-fieldset legend {
  padding: 0 var(--space-2);
  font-weight: 600;
}

.oc-checks {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  margin: 0;
  padding: 0;
  border: 0;
  min-width: 0;
}

.oc-checks legend {
  width: 100%;
  margin-bottom: var(--space-2);
}

.oc-pre {
  white-space: pre-line;
  overflow-wrap: anywhere;
}

.oc-notice {
  padding: var(--space-3);
  border: 1px solid var(--border);
  background: var(--surface-2, transparent);
}

.oc-notice summary {
  cursor: pointer;
  font-weight: 600;
}

.oc-learn,
.oc-public {
  padding-block: var(--space-6);
  max-width: 960px;
}

.oc-cards {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.oc-join .form-grid {
  grid-template-columns: 1fr;
}

/* Phase 2: the course builder, the learner's outline and lessons, the printable syllabus (390 px first). */
.oc-lessons {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding-left: var(--space-5);
}

.oc-lessons li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
  overflow-wrap: anywhere;
}

.oc-lessons .oc-actions {
  margin-left: auto;
}

.oc-drip {
  border: 1px solid var(--border);
  padding: var(--space-3);
}

.oc-lesson-text {
  line-height: 1.7;
  overflow-wrap: anywhere;
}

.oc-embed {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--surface-2, var(--border));
}

.oc-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.oc-learn progress {
  width: 100%;
  max-width: 28rem;
  height: 0.75rem;
  accent-color: var(--primary, #047857);
}

.oc-syllabus h2 {
  margin-top: var(--space-5);
}

@media print {
  .oc-noprint,
  .oc-tabs,
  .admin-page-head .oc-actions {
    display: none !important;
  }
}

/* Phase 3: the video library and the own player (R5.6, R5.10, R5.12). */
.oc-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.oc-chips li {
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-sm);
  border: 1px solid var(--border);
}

.oc-facts {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: var(--space-1) var(--space-3);
  margin: 0 0 var(--space-4);
}

.oc-facts dt {
  color: var(--text-muted);
}

.oc-facts dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.oc-check {
  display: inline-flex;
  gap: var(--space-1);
  align-items: center;
  margin-right: var(--space-3);
}

.oc-wide {
  grid-column: 1 / -1;
}

.oc-player {
  position: relative;
  display: grid;
  gap: var(--space-2);
  outline: none;
}

.oc-player:focus-visible {
  box-shadow: 0 0 0 2px var(--brand);
}

.oc-stage {
  position: relative;
  overflow: hidden;
  background: #000;
  aspect-ratio: 16 / 9;
}

.oc-player-audio .oc-stage {
  aspect-ratio: auto;
  min-height: 3rem;
  background: var(--surface-2, var(--border));
}

.oc-stage video,
.oc-stage audio {
  display: block;
  width: 100%;
  height: 100%;
}

.oc-controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  align-items: center;
}

.oc-controls .select {
  width: auto;
  min-width: 0;
  padding-block: var(--space-1);
}

.oc-seek-wrap {
  position: relative;
  flex: 1 1 100%;
  order: -1;
}

.oc-seek {
  width: 100%;
  accent-color: var(--brand);
}

.oc-mark {
  position: absolute;
  top: 0;
  width: 2px;
  height: 0.5rem;
  background: var(--warning);
  pointer-events: none;
}

.oc-time {
  font-variant-numeric: tabular-nums;
  font-size: var(--text-sm);
}

.oc-watched progress {
  width: 8rem;
  vertical-align: middle;
}

.oc-transcript ol,
.oc-chapters {
  display: grid;
  gap: var(--space-1);
  max-height: 18rem;
  margin: 0;
  padding: 0;
  overflow-y: auto;
  list-style: none;
}

.oc-cue {
  width: 100%;
  padding: var(--space-1) var(--space-2);
  color: inherit;
  font: inherit;
  text-align: left;
  background: none;
  border: 0;
  cursor: pointer;
}

.oc-cue-now .oc-cue,
.oc-cue:hover {
  background: var(--brand-soft, var(--success-soft));
}

@media (min-width: 48rem) {
  .oc-seek-wrap {
    flex: 1 1 12rem;
    order: 0;
  }
}

/* Phase 4: embeds, the watermark, in-video questions, notes, the protection table (R5.8, R18.1–R18.4). */
.oc-stage iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.oc-wm {
  position: absolute;
  inset: 0;
  z-index: 2;
  overflow: hidden;
  pointer-events: none;
  user-select: none;
}

.oc-wm-text,
.oc-wm-code {
  position: absolute;
  color: #fff;
  font-size: 0.8rem;
  line-height: 1.2;
  white-space: nowrap;
  text-shadow: 0 0 2px #000, 0 0 4px #000;
  transition: left 1.2s ease, top 1.2s ease;
}

.oc-wm-code {
  font-family: ui-monospace, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  opacity: 0;
}

.oc-wm-code-on {
  opacity: 0.3;
}

.oc-quiz {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: grid;
  gap: var(--space-2);
  align-content: center;
  padding: var(--space-4);
  overflow-y: auto;
  color: var(--text);
  background: var(--surface, #fff);
}

.oc-quiz[hidden] {
  display: none;
}

.oc-quiz-q {
  font-weight: 600;
}

.oc-quiz-options {
  display: grid;
  gap: var(--space-2);
}

.oc-row-warn th {
  color: var(--danger);
}

/* Phase 5 (R6): the PDF viewer, downloads, SCORM / xAPI frames, rich text — usable at 390 px */
.oc-grid { display: grid; gap: var(--space-3, .75rem); grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); }
.oc-hash { word-break: break-all; font-size: .8em; }
.oc-pdf { display: grid; gap: .5rem; }
.oc-pdf-bar { display: flex; flex-wrap: wrap; align-items: center; gap: .35rem; position: sticky; top: 0; z-index: 3; background: var(--surface, #fff); padding: .35rem 0; }
.oc-pdf-pageno .input { width: 4.5rem; }
.oc-pdf-search { display: flex; flex-wrap: wrap; align-items: center; gap: .35rem; flex: 1 1 12rem; }
.oc-pdf-search .input { flex: 1 1 8rem; min-width: 0; }
.oc-pdf-pages { display: grid; gap: .75rem; justify-items: center; overflow-x: auto; outline: none; }
.oc-pdf-page { position: relative; width: 100%; max-width: 100%; background: #fff; box-shadow: 0 1px 4px rgba(0, 0, 0, .18); overflow: hidden; user-select: none; -webkit-user-select: none; }
.oc-pdf-page canvas { display: block; max-width: none; }
.oc-pdf-page[hidden] { display: none; }
.oc-pdf-wm { position: absolute; inset: 0; pointer-events: none; z-index: 2; color: #444; font-size: clamp(.7rem, 2.4vw, 1rem); font-weight: 600; }
.oc-pdf-wm span { position: absolute; white-space: nowrap; transform: rotate(-24deg); }
.oc-pdf-wm .oc-wm-a { top: 18%; left: 8%; }
.oc-pdf-wm .oc-wm-b { top: 50%; left: 30%; }
.oc-pdf-wm .oc-wm-c { top: 80%; left: 12%; }
.oc-pdf-wm .oc-wm-code { bottom: 4px; right: 6px; transform: none; font-size: .6rem; opacity: .35; letter-spacing: .1em; }
.oc-pdf-night .oc-pdf-page { background: #111; }
.oc-pdf-night .oc-pdf-page canvas { filter: invert(.92) hue-rotate(180deg); }
.oc-pdf-night .oc-pdf-wm { color: #ddd; }
.oc-pdf-print-note { display: none; }
@media print {
  .oc-pdf-pages, .oc-pdf-bar, .oc-package { display: none !important; }
  .oc-pdf-print-note { display: block; }
}
.oc-package iframe { width: 100%; height: min(80vh, 760px); min-height: 26rem; border: 1px solid var(--border, #ddd); border-radius: var(--radius, 8px); background: #fff; }
.oc-rich h2, .oc-rich h3, .oc-rich h4 { margin: 1rem 0 .4rem; }
.oc-rich blockquote { border-left: 3px solid var(--border, #ccc); margin: .5rem 0; padding-left: .75rem; color: var(--muted, #555); }
.oc-rich img { max-width: 100%; height: auto; }
.oc-rich code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .92em; }
.oc-code { position: relative; margin: .5rem 0; }
.oc-code pre { overflow-x: auto; padding: .75rem; background: var(--surface-2, #f5f5f5); border-radius: var(--radius, 8px); max-width: 100%; }
.oc-code[data-lang]::before { content: attr(data-lang); position: absolute; top: .25rem; left: .6rem; font-size: .7rem; color: var(--muted, #666); }
.oc-code[data-lang] pre { padding-top: 1.4rem; }
.oc-code-copy { position: absolute; top: .2rem; right: .2rem; }
@media (max-width: 420px) {
  .oc-hide-sm { display: none; }
  .oc-pdf-bar .btn { padding-inline: .5rem; }
  .oc-package iframe { min-height: 22rem; }
}

/* Phase 6.4 (R8): submissions, comment pins on pictures, the grade book */
.oc-sub-file {
  margin: 0;
  display: grid;
  gap: var(--space-2);
}

.oc-pin-wrap {
  position: relative;
  max-width: 100%;
  width: fit-content;
}

.oc-pin-wrap img {
  display: block;
  max-width: 100%;
  height: auto;
  cursor: crosshair;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm, 4px);
}

.oc-pin {
  position: absolute;
  transform: translate(-50%, -50%);
  min-width: 1.5rem;
  height: 1.5rem;
  padding: 0 var(--space-1);
  border-radius: 999px;
  background: var(--brand);
  color: var(--brand-contrast, #fff);
  font-size: 0.75rem;
  line-height: 1.5rem;
  text-align: center;
  pointer-events: none;
}

.oc-pin-new {
  background: var(--warning, #b45309);
}

.oc-book th[scope="col"] {
  white-space: nowrap;
}

@media (max-width: 480px) {
  .oc-pin {
    min-width: 1.25rem;
    height: 1.25rem;
    line-height: 1.25rem;
  }
}

/* Phase 8 (R10.4): the classroom QR screen — a big code and the QR drawn as SVG, readable from the back row */
.oc-qr-screen .card-body { align-items: center; text-align: center; }
.oc-qr-box { width: min(80vw, 22rem); aspect-ratio: 1; }
.oc-qr-box svg { width: 100%; height: 100%; }
.oc-qr-code { font-size: clamp(2.5rem, 12vw, 5rem); font-weight: 700; letter-spacing: .2em; font-variant-numeric: tabular-nums; }
/* Phase 10 (R15.5, R15.7): fee receipts (A5, a named page), statements, the cash closing's denominations */
@page oc-a5 { size: A5; margin: 8mm; }
.oc-receipt { max-width: 148mm; }
.oc-receipt h1 { font-size: 1.3rem; text-align: center; margin: 0; }
.oc-receipt-c { text-align: center; margin: 0; }
.oc-receipt-meta { display: grid; grid-template-columns: max-content 1fr; gap: .2rem .75rem; margin: 0; }
.oc-receipt-meta dt { color: var(--muted, #555); }
.oc-receipt-meta dd { margin: 0; overflow-wrap: anywhere; }
.oc-total { font-weight: 700; }
.oc-denoms { display: grid; grid-template-columns: repeat(auto-fill, minmax(6.5rem, 1fr)); gap: .5rem; }
.oc-denoms .input { width: 100%; }
@media print {
  .oc-receipt { page: oc-a5; }
  .oc-no-print, .oc-tabs, .site-header, .site-footer, .admin-sidebar, .admin-topbar { display: none !important; }
  .oc-print-doc { border: 0; box-shadow: none; max-width: none; }
}
/* Phase 11 (R16): course choices of bundles and membership plans */
.oc-checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr)); gap: .25rem .75rem; max-height: 18rem; overflow: auto; }
.oc-share { overflow-wrap: anywhere; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
/* Phase 12 (R12–R13): doubts, messages, the transcript and verification */
.oc-doubt-img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
}
.oc-accepted {
  border-left: 4px solid #1a7f37;
}
.oc-thread .oc-msg-staff {
  background: #f3f6fb;
  padding: 0.5rem;
  border-radius: 6px;
}
.oc-dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.25rem 1rem;
}
.oc-dl dd {
  margin: 0;
  overflow-wrap: anywhere;
}
.oc-verify .oc-qr-box {
  width: 9rem;
}
@media (max-width: 480px) {
  .oc-dl {
    grid-template-columns: 1fr;
  }
}

/* Phase 14: the public site (390 px first; the "Enrol" bar stays at the bottom on a phone). */
.oc-site {
  padding-block: var(--space-6);
  max-width: 1080px;
}

.oc-site-block {
  padding-block: var(--space-5);
}

.oc-site-filters {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  align-items: end;
}

.oc-site-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.oc-site-crumbs {
  font-size: var(--text-sm, 0.875rem);
}

.oc-site-buy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.oc-site-price {
  margin: 0;
}

.oc-site-ticks,
.oc-site-people,
.oc-site-posts {
  display: grid;
  gap: var(--space-2);
  padding-left: var(--space-5);
}

.oc-site-section {
  border-bottom: 1px solid var(--border);
  padding-block: var(--space-2);
}

.oc-site-section summary {
  cursor: pointer;
  font-weight: 600;
}

.oc-site-facts {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: var(--space-2) var(--space-4);
}

.oc-site-sticky {
  display: none;
}

@media (max-width: 640px) {
  .oc-site-sticky {
    display: flex;
    position: sticky;
    bottom: 0;
    z-index: 5;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--surface, #fff);
    border-top: 1px solid var(--border);
  }

  .oc-site-facts {
    grid-template-columns: 1fr;
  }
}

/* Phase 15b: long addresses (take-downs) wrap at 390 px */
.oc-break { overflow-wrap: anywhere; }

/* Phase 15c (R21.1–R21.2): charts drawn on the server (SVG bars) and the engagement heatmap */
.oc-chart { margin: 0; }
.oc-chart svg { display: block; max-width: 100%; }
.oc-chart-bar { fill: var(--color-primary, #1f6feb); }
.oc-chart-legend { font-size: .875rem; }
.oc-heat td { min-width: 1.25rem; padding: .25rem; }
.oc-heat-0 { background: transparent; }
.oc-heat-1 { background: rgba(31, 111, 235, .2); }
.oc-heat-2 { background: rgba(31, 111, 235, .4); }
.oc-heat-3 { background: rgba(31, 111, 235, .65); }
.oc-heat-4 { background: var(--color-primary, #1f6feb); }