/* Canonical visual foundation for authenticated Academy surfaces and the shared shell. */
:root {
  --academy-page: #f7f7fa;
  --academy-surface: #ffffff;
  --academy-surface-soft: #f5f4fd;
  --academy-primary: #6865d8;
  --academy-primary-hover: #5753c7;
  --academy-primary-soft: #eeeefb;
  --academy-text: #20212a;
  --academy-secondary: #686b78;
  --academy-muted: #9497a3;
  --academy-border: #e6e7ec;
  --academy-gold: #c9a866;
  --academy-success: #3f8468;
  --academy-warning: #9a6a20;
  --academy-error: #b8525e;

  --academy-font-sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --academy-content-wide: 1280px;
  --academy-content-standard: 1180px;
  --academy-content-reading: 760px;
  --academy-gutter: clamp(16px, 3vw, 24px);

  --academy-space-1: 4px;
  --academy-space-2: 8px;
  --academy-space-3: 12px;
  --academy-space-4: 16px;
  --academy-space-5: 24px;
  --academy-space-6: 32px;
  --academy-space-7: 48px;

  --academy-radius-small: 8px;
  --academy-radius-control: 10px;
  --academy-radius-card: 16px;
  --academy-radius-hero: 24px;
  --academy-shadow-subtle: 0 8px 24px rgba(32, 33, 42, 0.05);
  --academy-shadow-elevated: 0 14px 34px rgba(32, 33, 42, 0.08);
  --academy-focus-ring: 0 0 0 3px rgba(104, 101, 216, 0.3);
  --academy-transition-fast: 150ms ease;
  --academy-transition-standard: 220ms ease;

  /* Compatibility aliases while route-level V2 styles migrate to semantic tokens. */
  --dashboard-page: var(--academy-page);
  --dashboard-surface: var(--academy-surface);
  --dashboard-soft: var(--academy-surface-soft);
  --dashboard-primary: var(--academy-primary);
  --dashboard-primary-hover: var(--academy-primary-hover);
  --dashboard-primary-soft: var(--academy-primary-soft);
  --dashboard-text: var(--academy-text);
  --dashboard-secondary: var(--academy-secondary);
  --dashboard-muted: var(--academy-muted);
  --dashboard-border: var(--academy-border);
  --dashboard-gold: var(--academy-gold);
}

html {
  color-scheme: light;
  background: var(--academy-page);
}

body[data-surface="academy"] {
  min-height: 100vh;
  color: var(--academy-text);
  background: var(--academy-page);
  font-family: var(--academy-font-sans);
}

body[data-surface="academy"] #app-shell {
  min-height: 100vh;
  margin-left: 0;
  color: var(--academy-text);
  background: var(--academy-page);
  font-family: var(--academy-font-sans);
}

body[data-surface="academy"] :is(button, input, select, textarea) {
  font-family: inherit;
}

body[data-surface="academy"] :is(h1, h2, h3, h4) {
  color: var(--academy-text);
  font-family: inherit;
  font-style: normal;
}

body[data-surface="academy"] .section-heading {
  max-width: var(--academy-content-reading);
  margin-bottom: var(--academy-space-5);
}

body[data-surface="academy"] .section-heading h1 {
  margin: var(--academy-space-2) 0 var(--academy-space-3);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

body[data-surface="academy"] .section-heading p:not(.eyebrow) {
  color: var(--academy-secondary);
}

body[data-surface="academy"] .eyebrow {
  color: var(--academy-primary);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

body[data-surface="academy"] .eyebrow.gold {
  color: #806329;
}

body[data-surface="academy"]:not(.immersive-game-active) :is(.primary-button, .ghost-button, .danger-button) {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--academy-space-2);
  padding: 0 var(--academy-space-4);
  border: 1px solid transparent;
  border-radius: var(--academy-radius-control);
  box-shadow: none;
  font-weight: 750;
  transition: color var(--academy-transition-fast), background-color var(--academy-transition-fast), border-color var(--academy-transition-fast), box-shadow var(--academy-transition-fast);
}

body[data-surface="academy"]:not(.immersive-game-active) .primary-button {
  color: #ffffff;
  background: var(--academy-primary);
  border-color: var(--academy-primary);
}

body[data-surface="academy"]:not(.immersive-game-active) .primary-button:hover:not(:disabled) {
  background: var(--academy-primary-hover);
  border-color: var(--academy-primary-hover);
}

body[data-surface="academy"]:not(.immersive-game-active) .ghost-button {
  color: var(--academy-secondary);
  background: var(--academy-surface);
  border-color: var(--academy-border);
}

body[data-surface="academy"]:not(.immersive-game-active) .ghost-button:hover:not(:disabled) {
  color: var(--academy-primary-hover);
  background: var(--academy-primary-soft);
  border-color: #d8d7f2;
}

body[data-surface="academy"]:not(.immersive-game-active) .danger-button {
  color: var(--academy-error);
  background: #fff7f8;
  border-color: #efd0d4;
}

body[data-surface="academy"]:not(.immersive-game-active) .danger-button:hover:not(:disabled) {
  color: #963c47;
  background: #fcedef;
  border-color: #e5b8be;
}

body[data-surface="academy"]:not(.immersive-game-active) .text-button {
  min-height: 44px;
  color: var(--academy-primary-hover);
}

body[data-surface="academy"]:not(.immersive-game-active) :is(input:not([type="checkbox"]):not([type="radio"]), select, textarea) {
  min-height: 44px;
  color: var(--academy-text);
  background: var(--academy-surface);
  border: 1px solid var(--academy-border);
  border-radius: var(--academy-radius-control);
  box-shadow: none;
}

body[data-surface="academy"]:not(.immersive-game-active) textarea {
  min-height: 112px;
  padding-block: var(--academy-space-3);
  resize: vertical;
}

body[data-surface="academy"]:not(.immersive-game-active) :is(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 0;
  box-shadow: var(--academy-focus-ring);
}

body[data-surface="academy"]:not(.immersive-game-active) :is(.content-card, .stat-card, .detail-panel, .onboarding-card) {
  color: var(--academy-text);
  background: var(--academy-surface);
  border: 1px solid var(--academy-border);
  border-radius: var(--academy-radius-card);
  box-shadow: var(--academy-shadow-subtle);
}

body[data-surface="academy"]:not(.immersive-game-active) :is(.status-pill, .reward-pill, .duration-pill) {
  min-height: 28px;
  color: var(--academy-primary-hover);
  background: var(--academy-primary-soft);
  border: 1px solid #deddf4;
  border-radius: 999px;
}

body[data-surface="academy"] .form-message {
  color: var(--academy-secondary);
}

body[data-surface="academy"] .form-message.error {
  color: var(--academy-error);
}

body[data-surface="academy"] .form-message.success {
  color: var(--academy-success);
}

.academy-loading {
  min-height: 160px;
  display: grid;
  place-items: center;
  color: var(--academy-secondary);
}

.academy-skeleton {
  overflow: hidden;
  background: linear-gradient(90deg, var(--academy-surface-soft), #ffffff, var(--academy-surface-soft));
  background-size: 220% 100%;
  border-radius: var(--academy-radius-small);
  animation: academy-skeleton-shift 1.4s ease-in-out infinite;
}

/* Shared horizontal application shell. Immersive game routes intentionally do not match. */
#app-shell {
  margin-left: 0;
}

body:not(.immersive-game-active) .app-top-bar {
  position: sticky;
  z-index: 30;
  top: 0;
  width: 100%;
  min-height: 70px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas: "brand navigation actions";
  align-items: center;
  gap: clamp(18px, 2.6vw, 40px);
  margin: 0;
  padding: 10px max(24px, calc((100% - var(--academy-content-wide)) / 2));
  color: var(--academy-text);
  background: var(--academy-surface);
  border: 0;
  border-bottom: 1px solid var(--academy-border);
  border-radius: 0;
  box-shadow: 0 2px 12px rgba(32, 33, 42, 0.035);
  backdrop-filter: none;
}

.app-brand {
  grid-area: brand;
  width: clamp(130px, 11vw, 154px);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border-radius: var(--academy-radius-small);
}

.app-brand img {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 1px 1px rgba(32, 33, 42, 0.42));
}

.top-nav {
  grid-area: navigation;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 3px;
}

.top-nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  padding: 0 11px;
  color: var(--academy-secondary);
  border: 1px solid transparent;
  border-radius: 9px;
  font-family: var(--academy-font-sans);
  font-size: 0.86rem;
  font-weight: 700;
  transition: color var(--academy-transition-fast), background-color var(--academy-transition-fast);
}

.top-nav a:hover {
  color: var(--academy-text);
  background: var(--academy-page);
}

.top-nav a.active,
.top-nav a[aria-current="page"] {
  color: var(--academy-primary);
  background: var(--academy-primary-soft);
}

body:not(.immersive-game-active) .app-top-bar .top-actions {
  grid-area: actions;
  display: flex;
  align-items: center;
  gap: var(--academy-space-2);
  margin: 0;
}

body:not(.immersive-game-active) .app-top-bar .top-summary {
  display: flex;
  align-items: center;
  color: var(--academy-secondary);
  font-family: var(--academy-font-sans);
}

body:not(.immersive-game-active) .app-top-bar .top-summary-xp {
  padding: 5px 9px;
  color: #6a5326;
  background: #faf5e9;
  border: 1px solid #eee3ca;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 800;
  white-space: nowrap;
}

body:not(.immersive-game-active) .app-top-bar .language-select select {
  min-height: 44px;
  width: 168px;
  min-width: 160px;
  max-width: 180px;
  padding: 0 30px 0 11px;
  color: var(--academy-text);
  background: var(--academy-surface);
  border: 1px solid var(--academy-border);
  border-radius: 9px;
  font-weight: 700;
}

body:not(.immersive-game-active) .app-top-bar .avatar-button {
  width: 44px;
  height: 44px;
  min-width: 44px;
  color: var(--academy-text);
  background: var(--academy-primary-soft);
  border: 1px solid #d9d8f5;
  box-shadow: none;
}

body:not(.immersive-game-active) .app-top-bar .top-actions > .ghost-button {
  min-height: 44px;
  padding: 0 11px;
  color: var(--academy-secondary);
  background: transparent;
  border: 1px solid var(--academy-border);
  border-radius: 9px;
  box-shadow: none;
  font-size: 0.78rem;
  font-weight: 700;
}

.app-top-bar :is(a, button, select):focus-visible {
  outline: 0;
  box-shadow: var(--academy-focus-ring);
}

@keyframes academy-skeleton-shift {
  to {
    background-position: -220% 0;
  }
}

@media (min-width: 1000px) and (max-height: 820px) {
  body:not(.immersive-game-active) .app-top-bar {
    min-height: 60px;
    padding-block: 6px;
  }
}

@media (max-width: 1240px) {
  body:not(.immersive-game-active) .app-top-bar {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "brand actions"
      "navigation navigation";
    gap: 6px 18px;
    padding: 8px 20px 9px;
  }

  .top-nav {
    overflow-x: auto;
    scrollbar-width: thin;
    padding-bottom: 1px;
  }
}

@media (max-width: 620px) {
  body:not(.immersive-game-active) .app-top-bar {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "brand"
      "actions"
      "navigation";
    gap: 7px;
    padding-inline: 12px;
  }

  .app-brand {
    width: 122px;
  }

  body:not(.immersive-game-active) .app-top-bar .top-summary {
    display: none;
  }

  body:not(.immersive-game-active) .app-top-bar .language-select select {
    width: 168px;
    min-width: 160px;
    max-width: 180px;
    font-size: 0.8rem;
  }

  body:not(.immersive-game-active) .app-top-bar .top-actions {
    width: 100%;
    flex-wrap: wrap;
    gap: 6px;
  }

  body:not(.immersive-game-active) .app-top-bar .avatar-button {
    margin-left: auto;
  }

  body:not(.immersive-game-active) .app-top-bar .top-actions > .ghost-button {
    width: 44px;
    min-width: 44px;
    padding: 0;
    overflow: hidden;
    font-size: 0;
  }

  body:not(.immersive-game-active) .app-top-bar .top-actions > .ghost-button::before {
    content: "↪";
    font-size: 1rem;
  }

  .top-nav {
    margin-inline: -12px;
    padding-inline: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .academy-skeleton {
    animation: none;
  }

  body:not(.immersive-game-active) .app-top-bar * {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}