/* AI ACADEMY (top menu > AI ACADEMY). Styled to match the 2ADVANCED STUDIOS archive:
   near-black navy, thin steel-blue frames, widely tracked uppercase labels, muted blue-grey body text,
   and a cool cyan-blue accent. Pages sit to the right of the left menu, like the Explore pages. */

:root {
  --aca-bg: #03070c;
  --aca-panel: rgba(7, 14, 24, 0.92);
  --aca-panel-2: rgba(11, 22, 36, 0.92);
  --aca-line: #1c3450;
  --aca-line-strong: #3d6d96;
  --aca-accent: #7cc4ff;
  --aca-accent-soft: rgba(124, 196, 255, 0.14);
  --aca-text: #d3e2f0;
  --aca-muted: #839bb1;
  --aca-title: #eef6ff;
}

/* ---------- left menu: buttons grow to fit their titles, and the list scrolls if it is long ---------- */

#academySubmenu {
  bottom: 76px;
  max-height: calc(100vh - 126px - 76px);
  overflow-y: auto;
  scrollbar-width: none;
  padding: 2px 6px 2px 0;
}

#academySubmenu::-webkit-scrollbar {
  display: none;
}

#academySubmenu button {
  flex-shrink: 0;
  height: auto;
  min-height: 36px;
  padding: 8px 14px 8px 20px;
  line-height: 1.3;
  font-size: 10.5px;
  letter-spacing: 0.1em;
  white-space: normal;
  text-align: left;
}

#academySubmenu button.is-active {
  line-height: 1.3;
}

/* ---------- pages ---------- */

.aca-page {
  position: fixed;
  z-index: 16;
  top: 110px;
  right: 26px;
  bottom: 76px;
  left: 248px;
  transition: opacity 320ms ease, visibility 320ms ease;
}

.aca-page.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.aca-inner {
  box-sizing: border-box;
  height: 100%;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--aca-line-strong) transparent;
  padding: 28px 34px;
  background:
    radial-gradient(ellipse at 50% -20%, rgba(60, 120, 180, 0.18), transparent 60%),
    var(--aca-panel);
  border: 1px solid var(--aca-line-strong);
  box-shadow: 0 0 0 1px rgba(124, 196, 255, 0.06), 0 18px 48px rgba(0, 0, 0, 0.55);
  font-family: "Trebuchet MS", "Segoe UI", Arial, sans-serif;
  color: var(--aca-text);
}

/* ---------- type ---------- */

.aca-kicker {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--aca-accent);
  margin-bottom: 18px;
}

.aca-h1 {
  margin: 0 0 12px;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.18em;
  line-height: 1.2;
  text-transform: uppercase;
  color: var(--aca-title);
}

.aca-h2 {
  margin: 28px 0 10px;
  padding-top: 14px;
  border-top: 1px solid var(--aca-line);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--aca-accent);
}

.aca-h3 {
  margin: 24px 0 8px;
  font-size: 15px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--aca-title);
}

.aca-lead {
  margin: 0 0 16px;
  font-size: 17px;
  line-height: 1.5;
  color: var(--aca-title);
}

.aca-text {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--aca-text);
}

.aca-small {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--aca-muted);
}

.aca-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 4px;
}

.aca-meta span {
  padding: 5px 10px;
  border: 1px solid var(--aca-line-strong);
  background: var(--aca-accent-soft);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aca-title);
}

.aca-list {
  margin: 0 0 12px;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--aca-text);
}

.aca-list li {
  margin-bottom: 6px;
}

/* ---------- introduction layout ---------- */

.aca-intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 34px;
  margin-top: 8px;
}

.aca-col {
  min-width: 0;
}

.aca-weeks {
  margin: 0 0 8px;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.aca-weeks li {
  padding: 10px 0;
  border-bottom: 1px dashed var(--aca-line);
}

.aca-week-link {
  display: block;
  padding: 0;
  border: 0;
  background: none;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aca-title);
  cursor: pointer;
  text-align: left;
}

.aca-week-link:hover,
.aca-week-link:focus-visible {
  color: var(--aca-accent);
}

.aca-week-sum {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--aca-muted);
}

.aca-table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 12px;
  font-size: 13px;
}

.aca-table th,
.aca-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--aca-line);
  text-align: left;
  vertical-align: top;
  color: var(--aca-text);
}

.aca-table th {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--aca-accent);
  background: var(--aca-panel-2);
}

.aca-table tr:nth-child(even) td {
  background: rgba(124, 196, 255, 0.03);
}

/* ---------- buy and buttons ---------- */

.aca-buy {
  margin-top: 26px;
  padding: 18px 20px;
  border: 1px solid var(--aca-line-strong);
  background: var(--aca-panel-2);
  box-shadow: inset 0 0 0 1px rgba(124, 196, 255, 0.05);
}

.aca-price {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.aca-price-label {
  font-size: 11px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--aca-muted);
}

.aca-price-value {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--aca-title);
}

.aca-btn {
  display: inline-block;
  padding: 11px 20px;
  border: 1px solid var(--aca-line-strong);
  background: linear-gradient(180deg, rgba(30, 58, 88, 0.9), rgba(12, 24, 38, 0.95));
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--aca-title);
  cursor: pointer;
  transition: border-color 200ms ease, box-shadow 200ms ease, color 200ms ease;
}

.aca-btn:hover:not(:disabled),
.aca-btn:focus-visible {
  border-color: var(--aca-accent);
  color: var(--aca-accent);
  box-shadow: 0 0 18px rgba(124, 196, 255, 0.25);
  outline: none;
}

.aca-btn:disabled {
  opacity: 0.5;
  cursor: default;
}

.aca-btn-primary {
  width: 100%;
  border-color: var(--aca-accent);
  box-shadow: 0 0 14px rgba(124, 196, 255, 0.18);
}

.aca-status {
  min-height: 1.2em;
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--aca-muted);
}

.aca-intro-cta {
  margin-top: 8px;
  max-width: 520px;
}

/* ---------- week pages: lesson beside the AI tutor ---------- */

.aca-week {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: 26px;
  padding: 0;
  overflow: hidden;
}

.aca-lesson {
  box-sizing: border-box;
  height: 100%;
  overflow-y: auto;
  padding: 28px 30px;
  scrollbar-width: thin;
  scrollbar-color: var(--aca-line-strong) transparent;
}

.aca-lesson-body .aca-h3 {
  margin-top: 26px;
}

.aca-tutor {
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  padding: 22px 22px 20px 0;
  border-left: 1px solid var(--aca-line);
}

.aca-tutor-head {
  padding: 10px 14px;
  margin-bottom: 14px;
  border: 1px solid var(--aca-line-strong);
  background: var(--aca-panel-2);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--aca-accent);
}

.aca-log {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 4px 4px 4px 0;
  scrollbar-width: thin;
  scrollbar-color: var(--aca-line-strong) transparent;
}

.aca-msg {
  max-width: 92%;
  padding: 11px 14px;
  border: 1px solid var(--aca-line);
  font-size: 14px;
  line-height: 1.6;
  color: var(--aca-text);
  background: rgba(10, 20, 34, 0.9);
}

.aca-msg p {
  margin: 0 0 8px;
}

.aca-msg p:last-child {
  margin-bottom: 0;
}

.aca-msg-tutor {
  align-self: flex-start;
  border-left: 2px solid var(--aca-accent);
}

.aca-msg-user {
  align-self: flex-end;
  background: var(--aca-accent-soft);
  border-color: var(--aca-line-strong);
  color: var(--aca-title);
}

.aca-msg-error {
  align-self: stretch;
  border-color: #7a3b3b;
  color: #f0c4c4;
}

.aca-msg.is-pending {
  color: var(--aca-muted);
  font-style: italic;
}

.aca-form {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  margin-top: 14px;
}

.aca-input {
  flex: 1 1 auto;
  box-sizing: border-box;
  min-height: 64px;
  max-height: 160px;
  resize: vertical;
  padding: 11px 12px;
  border: 1px solid var(--aca-line-strong);
  background: rgba(3, 8, 14, 0.9);
  font: inherit;
  font-size: 14px;
  line-height: 1.5;
  color: var(--aca-title);
}

.aca-input::placeholder {
  color: var(--aca-muted);
}

.aca-input:focus {
  outline: none;
  border-color: var(--aca-accent);
  box-shadow: 0 0 12px rgba(124, 196, 255, 0.2);
}

.aca-input:disabled {
  opacity: 0.55;
}

.aca-form .aca-btn {
  flex: 0 0 auto;
  padding: 12px 16px;
}

/* ---------- smaller screens ---------- */

@media (max-width: 1000px) {
  .aca-page {
    top: 96px;
    left: 16px;
    right: 16px;
    bottom: 24px;
  }

  .aca-intro-grid,
  .aca-week {
    grid-template-columns: minmax(0, 1fr);
  }

  .aca-tutor {
    padding: 0;
    border-left: 0;
    border-top: 1px solid var(--aca-line);
    padding-top: 18px;
    min-height: 460px;
  }
}

/* ---------- tracks: left-menu switch and the four track cards ---------- */

#academySubmenu .aca-track-switch {
  display: grid;
  grid-template-columns: 1fr;
  gap: 5px;
  margin-bottom: 6px;
  flex-shrink: 0;
}

#academySubmenu .aca-track-btn {
  min-height: 30px;
  padding: 6px 14px 6px 20px;
  font-size: 10.5px;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.aca-tracks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin: 8px 0 4px;
}

.aca-track-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
  border: 1px solid var(--aca-line);
  background: var(--aca-panel-2);
}

.aca-track-card.is-active {
  border-color: var(--aca-accent);
  box-shadow: 0 0 16px rgba(124, 196, 255, 0.18);
}

.aca-track-name {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--aca-title);
}

.aca-track-audience {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--aca-muted);
}

.aca-track-price {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--aca-accent);
}

.aca-track-actions .aca-btn {
  width: 100%;
}

/* ---------- courses page: description on each card, and the back button on a course page ---------- */

.jn-desc {
  margin: 14px 0 6px;
  font-size: 15px;
  line-height: 1.55;
  color: rgba(240, 230, 200, 0.86);
  min-height: 96px;
}

.aca-back {
  margin-bottom: 18px;
}

/* ---------- courses page: the Tiers page uses a fixed four-row grid, so this page stacks its own content instead ---------- */

#academyIntro.ex101-page-inner {
  display: block !important;
  height: 100% !important;
  overflow-y: auto !important;
  box-sizing: border-box;
  padding: 30px 12px 40px;
  scrollbar-width: none;
}

#academyIntro.ex101-page-inner::-webkit-scrollbar {
  display: none;
}

#academyIntro .jn-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 26px;
}

#academyIntro .aca-small {
  margin-top: 18px;
  text-align: center;
}

/* ---------- courses page: everything fits on screen, nothing scrolls ---------- */

#academyIntro.ex101-page-inner {
  display: flex !important;
  flex-direction: column;
  overflow: hidden !important;
  padding: 18px 12px 22px;
}

#academyIntro .aca-kicker {
  margin-bottom: 6px;
}

#academyIntro .aca-h1 {
  margin-bottom: 4px;
  font-size: 24px;
}

#academyIntro .aca-lead {
  margin-bottom: 6px;
  font-size: 15px;
}

#academyIntro .jn-grid {
  flex: 1 1 auto;
  min-height: 0;
  margin-top: 12px;
  align-items: stretch;
}

#academyIntro .jn-tier {
  min-height: 0;
  height: 100%;
  padding: 20px 16px 18px;
}

#academyIntro .jn-price {
  margin: 8px 0 10px;
}

#academyIntro .jn-price span {
  font-size: 34px;
}

#academyIntro .jn-desc {
  min-height: 0;
  margin: 4px 0 8px;
  font-size: 14px;
  line-height: 1.45;
}

#academyIntro .jn-perks {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.35;
}

#academyIntro .jn-perks li {
  margin-bottom: 2px;
}

#academyIntro .jn-tier > .jn-cta,
#academyIntro .jn-tier > .aca-status {
  margin-top: auto;
}

#academyIntro .aca-small {
  margin: 10px 0 0;
  font-size: 12px;
}

/* Disclaimers, progress and certificate (added with the Terms and Certificate of Completion) */
.aca-disclaimer { margin-top: 18px; padding: 10px 12px; border: 1px solid rgba(201, 180, 122, 0.45); font-size: 11px; line-height: 1.5; }
.aca-disclaimer p { margin: 0 0 6px; }
.aca-disclaimer a { color: inherit; text-decoration: underline; }
.aca-progress { margin: 12px 0 8px; font-size: 12px; line-height: 1.5; }
.aca-cert { margin-top: 10px; }
.aca-cert:disabled { opacity: 0.45; cursor: not-allowed; }
.aca-done { margin: 16px 0 10px; }
.aca-done.is-done { opacity: 0.8; }
.aca-week-link.is-done { opacity: 0.85; }