/* BellerCreatives studio layouts, token-driven. */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  background: var(--bc-color-bg);
}

body {
  background: var(--bc-color-bg);
  color: var(--bc-color-text);
  font-family: var(--bc-font-sans);
  line-height: var(--bc-line-base);
  margin: var(--bc-space-0);
}

a {
  color: var(--bc-color-accent);
}

a:hover {
  color: var(--bc-color-accent-hover);
}

@media (prefers-color-scheme: dark) {
  body {
    background: var(--bc-color-bg);
    color: var(--bc-color-text);
  }
}

.bc-skip,
.skip-to-content {
  background: var(--bc-color-accent);
  border-radius: var(--bc-radius-0) var(--bc-radius-0) var(--bc-radius-3) var(--bc-radius-0);
  color: var(--bc-color-inverse);
  left: var(--bc-space-0);
  padding: var(--bc-space-2) var(--bc-space-4);
  position: absolute;
  text-decoration: none;
  top: calc(var(--bc-space-10) * -1);
  transition: top var(--bc-duration-base) var(--bc-ease-standard);
  z-index: var(--bc-z-skip);
}

.bc-skip:focus,
.skip-to-content:focus {
  top: var(--bc-space-0);
}

.bc-topbar {
  align-items: center;
  /* Opaque: page content must never show through the sticky topbar. */
  background: var(--bc-color-surface);
  border-bottom: var(--bc-border-width) solid var(--bc-color-border);
  display: flex;
  min-height: var(--bc-topbar-height);
  padding: var(--bc-space-0) var(--bc-space-6);
  position: sticky;
  top: var(--bc-space-0);
  z-index: var(--bc-z-header);
}

.bc-topbar-inner {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin: var(--bc-space-0) auto;
  max-width: var(--bc-layout-xl);
  width: 100%;
}

.bc-brand {
  color: var(--bc-color-text);
  font-size: var(--bc-font-size-4);
  font-weight: 900;
  text-decoration: none;
}

.bc-brand span {
  color: var(--bc-color-accent);
}

.bc-nav {
  align-items: center;
  display: flex;
  gap: var(--bc-space-1);
  list-style: none;
  margin: var(--bc-space-0);
  padding: var(--bc-space-0);
}

.bc-nav a {
  border-radius: var(--bc-radius-2);
  color: var(--bc-color-text-muted);
  display: inline-flex;
  font-size: var(--bc-font-size-1);
  font-weight: 700;
  padding: var(--bc-space-2) var(--bc-space-3);
  text-decoration: none;
  transition:
    background-color var(--bc-duration-fast) var(--bc-ease-standard),
    color var(--bc-duration-fast) var(--bc-ease-standard);
}

.bc-nav a:hover,
.bc-nav a.active {
  background: var(--bc-color-accent-soft);
  color: var(--bc-color-accent);
}

.bc-nav-cta {
  background: var(--bc-color-accent);
  /* a11y: !important so .bc-nav a (0,1,1) can't repaint CTA text muted-on-purple (1.06:1) */
  color: var(--bc-color-inverse) !important;
}

.bc-nav-cta:hover {
  background: var(--bc-color-accent-hover);
  color: var(--bc-color-inverse) !important;
}

.bc-hamburger {
  background: transparent;
  border: var(--bc-border-width) solid transparent;
  border-radius: var(--bc-radius-2);
  cursor: pointer;
  display: none;
  padding: var(--bc-space-2);
}

.bc-hamburger span {
  background: var(--bc-color-text);
  display: block;
  height: var(--bc-border-width-strong);
  margin: var(--bc-space-1) var(--bc-space-0);
  transition: background-color var(--bc-duration-fast) var(--bc-ease-standard);
  width: var(--bc-space-7);
}

.bc-container,
.container {
  margin: var(--bc-space-0) auto;
  max-width: var(--bc-layout-lg);
  padding: var(--bc-space-0) var(--bc-space-6);
  width: 100%;
}

.bc-container-narrow {
  margin: var(--bc-space-0) auto;
  max-width: var(--bc-layout-sm);
  padding: var(--bc-space-0) var(--bc-space-6);
  width: 100%;
}

.bc-studio-header {
  background: var(--bc-gradient-hero);
  padding: var(--bc-space-9) var(--bc-space-6) var(--bc-space-7);
  text-align: center;
}

.bc-studio-header h1 {
  color: var(--bc-color-text);
  font-size: var(--bc-font-size-6);
  font-weight: 900;
  line-height: var(--bc-line-tight);
  margin: var(--bc-space-2) auto var(--bc-space-3);
  max-width: var(--bc-layout-md);
}

.bc-studio-header p {
  color: var(--bc-color-text-muted);
  font-size: var(--bc-font-size-4);
  line-height: var(--bc-line-relaxed);
  margin: var(--bc-space-0) auto;
  max-width: var(--bc-layout-sm);
}

.bc-studio-badge {
  background: var(--bc-color-accent);
  border-radius: var(--bc-radius-pill);
  color: var(--bc-color-inverse);
  display: inline-flex;
  font-size: var(--bc-font-size-0);
  font-weight: 900;
  letter-spacing: var(--bc-letter-caps);
  padding: var(--bc-space-1) var(--bc-space-3);
  text-transform: uppercase;
}

.bc-steps {
  display: flex;
  justify-content: center;
  margin: var(--bc-space-7) auto;
  max-width: var(--bc-layout-sm);
  position: relative;
}

.bc-step {
  align-items: center;
  display: flex;
  flex: 1;
  flex-direction: column;
  position: relative;
}

.bc-step-num {
  align-items: center;
  background: var(--bc-color-bg-subtle);
  border: var(--bc-border-width-strong) solid var(--bc-color-border);
  border-radius: var(--bc-radius-round);
  color: var(--bc-color-text-muted);
  display: flex;
  font-size: var(--bc-font-size-1);
  font-weight: 800;
  height: var(--bc-control-height);
  justify-content: center;
  transition:
    background-color var(--bc-duration-base) var(--bc-ease-standard),
    border-color var(--bc-duration-base) var(--bc-ease-standard),
    box-shadow var(--bc-duration-base) var(--bc-ease-standard);
  width: var(--bc-control-height);
  z-index: var(--bc-z-base);
}

.bc-step-label {
  color: var(--bc-color-text-muted);
  font-size: var(--bc-font-size-0);
  font-weight: 700;
  margin-top: var(--bc-space-2);
}

.bc-step.active .bc-step-num {
  background: var(--bc-color-accent);
  border-color: var(--bc-color-accent);
  box-shadow: var(--bc-shadow-focus);
  color: var(--bc-color-inverse);
}

.bc-step.active .bc-step-label {
  color: var(--bc-color-accent);
}

.bc-step.done .bc-step-num {
  background: var(--bc-color-success);
  border-color: var(--bc-color-success);
  color: var(--bc-color-inverse);
}

.bc-step.done:not(:last-child)::after {
  background: var(--bc-color-success);
}

.bc-step:not(:last-child)::after {
  background: var(--bc-color-border);
  content: "";
  height: var(--bc-border-width-strong);
  left: calc(50% + var(--bc-space-6));
  position: absolute;
  top: calc(var(--bc-control-height) / 2);
  width: calc(100% - var(--bc-space-12));
}

.bc-panel {
  animation: bcFadeIn var(--bc-duration-slow) var(--bc-ease-standard);
  display: none;
}

.bc-panel.active {
  display: block;
}

@keyframes bcFadeIn {
  from {
    opacity: 0;
    transform: translateY(var(--bc-space-2));
  }
  to {
    opacity: 1;
    transform: translateY(var(--bc-space-0));
  }
}

.bc-card-grid,
.bc-option-grid,
.bc-preview-grid,
.bc-voice-grid {
  display: grid;
  gap: var(--bc-space-5);
  margin: var(--bc-space-6) var(--bc-space-0);
}

.bc-card-grid,
.bc-voice-grid {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, var(--bc-layout-xs) / 2), 1fr));
}

.bc-option-grid {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 12rem), 1fr));
}

.bc-preview-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.bc-option,
.bc-preview-card {
  background: var(--bc-color-surface);
  border: var(--bc-border-width-strong) solid var(--bc-color-border);
  border-radius: var(--bc-radius-3);
  cursor: pointer;
  overflow: hidden;
  padding: var(--bc-space-5);
  text-align: center;
  transition:
    background-color var(--bc-duration-base) var(--bc-ease-standard),
    border-color var(--bc-duration-base) var(--bc-ease-standard),
    box-shadow var(--bc-duration-base) var(--bc-ease-standard),
    transform var(--bc-duration-base) var(--bc-ease-standard);
}

.bc-option:hover,
.bc-option.selected,
.bc-preview-card:hover,
.bc-preview-card.selected {
  background: var(--bc-color-accent-soft);
  border-color: var(--bc-color-accent);
  box-shadow: var(--bc-shadow-focus);
}

.bc-preview-card:hover {
  transform: translateY(calc(var(--bc-space-1) * -1));
}

.bc-option-icon {
  font-size: var(--bc-font-size-6);
  margin-bottom: var(--bc-space-2);
}

.bc-option-title {
  color: var(--bc-color-text);
  font-size: var(--bc-font-size-2);
  font-weight: 800;
}

.bc-option-desc {
  color: var(--bc-color-text-muted);
  font-size: var(--bc-font-size-1);
  margin-top: var(--bc-space-1);
}

.bc-preview-card {
  padding: var(--bc-space-0);
  position: relative;
}

.bc-preview-card img,
.bc-preview-card svg,
.bc-cover-proof svg {
  display: block;
  max-width: 100%;
  width: 100%;
}

.bc-preview-card img {
  aspect-ratio: 2 / 3;
  object-fit: cover;
}

.bc-preview-label {
  background: linear-gradient(transparent, var(--bc-color-overlay));
  bottom: var(--bc-space-0);
  color: var(--bc-color-inverse);
  font-size: var(--bc-font-size-0);
  font-weight: 800;
  left: var(--bc-space-0);
  padding: var(--bc-space-2);
  position: absolute;
  right: var(--bc-space-0);
  text-align: center;
}

.bc-audio-player {
  align-items: center;
  background: var(--bc-color-bg-alt);
  border: var(--bc-border-width) solid var(--bc-color-border);
  border-radius: var(--bc-radius-3);
  display: flex;
  gap: var(--bc-space-3);
  margin: var(--bc-space-2) var(--bc-space-0);
  padding: var(--bc-space-3) var(--bc-space-4);
}

.bc-audio-play {
  align-items: center;
  background: var(--bc-color-accent);
  border: var(--bc-border-width) solid transparent;
  border-radius: var(--bc-radius-round);
  color: var(--bc-color-inverse);
  cursor: pointer;
  display: flex;
  flex-shrink: 0;
  height: var(--bc-control-height);
  justify-content: center;
  width: var(--bc-control-height);
}

.bc-audio-name,
.bc-price {
  color: var(--bc-color-text);
  font-weight: 800;
}

.bc-audio-meta,
.bc-price-period,
.bc-price-note,
.bc-progress-label {
  color: var(--bc-color-text-muted);
  font-size: var(--bc-font-size-1);
}

.bc-progress {
  margin: var(--bc-space-7) var(--bc-space-0);
}

.bc-progress-label {
  display: flex;
  justify-content: space-between;
  margin-top: var(--bc-space-2);
}

.bc-price {
  font-size: var(--bc-font-size-6);
}

.bc-features {
  list-style: none;
  margin: var(--bc-space-4) var(--bc-space-0);
  padding: var(--bc-space-0);
}

.bc-features li {
  align-items: baseline;
  display: flex;
  font-size: var(--bc-font-size-2);
  gap: var(--bc-space-2);
  padding: var(--bc-space-2) var(--bc-space-0);
}

.bc-footer {
  background: var(--bc-color-bg-alt);
  border-top: var(--bc-border-width) solid var(--bc-color-border);
  color: var(--bc-color-text-muted);
  font-size: var(--bc-font-size-1);
  margin-top: var(--bc-space-10);
  padding: var(--bc-space-9) var(--bc-space-6) var(--bc-space-7);
  text-align: center;
}

.bc-footer a {
  color: var(--bc-color-text);
  text-decoration: none;
}

.bc-footer-links,
.bc-footer-ecosystem {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: var(--bc-space-4);
  justify-content: center;
  list-style: none;
  margin: var(--bc-space-4) var(--bc-space-0);
  padding: var(--bc-space-0);
}

.bc-loading,
.bc-empty {
  color: var(--bc-color-text-muted);
  padding: var(--bc-space-9);
  text-align: center;
}

.bc-spinner {
  animation: bcSpin var(--bc-duration-slow) linear infinite;
  border: var(--bc-border-width-strong) solid var(--bc-color-border);
  border-radius: var(--bc-radius-round);
  border-top-color: var(--bc-color-accent);
  height: var(--bc-control-height);
  margin: var(--bc-space-0) auto var(--bc-space-4);
  width: var(--bc-control-height);
}

@keyframes bcSpin {
  to {
    transform: rotate(1turn);
  }
}

.bc-flow,
.bc-stack {
  display: flex;
  flex-direction: column;
  gap: var(--bc-space-4);
}

.bc-inline {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: var(--bc-space-3);
}

.bc-page-note {
  background: var(--bc-color-bg-alt);
  border: var(--bc-border-width) solid var(--bc-color-border);
  border-radius: var(--bc-radius-3);
  color: var(--bc-color-text-muted);
  padding: var(--bc-space-4);
}

#cover-gallery[hidden],
.is-hidden {
  display: none;
}

@media (max-width: 900px) {
  .bc-hamburger {
    display: block;
  }

  .bc-nav {
    background: var(--bc-color-surface);
    border: var(--bc-border-width) solid var(--bc-color-border);
    border-radius: var(--bc-radius-3);
    box-shadow: var(--bc-shadow-md);
    display: none;
    flex-direction: column;
    left: var(--bc-space-4);
    padding: var(--bc-space-2);
    position: absolute;
    right: var(--bc-space-4);
    top: var(--bc-topbar-height);
  }

  .bc-nav.open,
  .bc-nav[data-open="true"] {
    display: flex;
  }

  .bc-nav a {
    padding: var(--bc-space-3) var(--bc-space-4);
    width: 100%;
  }
}

@media (max-width: 760px) {
  .bc-topbar,
  .bc-studio-header,
  .bc-container,
  .bc-container-narrow,
  .container {
    padding-left: var(--bc-space-4);
    padding-right: var(--bc-space-4);
  }

  .bc-studio-header h1 {
    font-size: var(--bc-font-size-5);
  }

  .bc-preview-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .bc-step-label {
    display: none;
  }

  .bc-actions {
    align-items: stretch;
    flex-direction: column;
  }
}

/* ── Bibliography panel (Session 9) ──────────────────────────────────── */
.bc-bibliography-entry {
  padding-left: 2rem;
  text-indent: -2rem;
  margin-bottom: 0.75rem;
  line-height: 1.55;
  font-size: 0.85rem;
  color: var(--bc-text, #e2e8f0);
}

.bc-bibliography-entry a {
  color: var(--bc-accent, #315f72);
  word-break: break-all;
}

.bib-format-bar {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.bib-fmt-btn {
  padding: 0.2rem 0.55rem;
  font-size: 0.65rem;
  font-weight: 600;
  border: 1px solid var(--color-border, #1e293b);
  border-radius: 4px;
  background: rgba(255,255,255,0.04);
  color: var(--bc-text-muted, #8896ab);
  cursor: pointer;
  transition: background 0.15s;
}

.bib-fmt-btn:hover { background: rgba(49, 95, 114, 0.12); }

.bib-fmt-active {
  background: rgba(49, 95, 114, 0.22) !important;
  color: var(--bc-accent, #315f72) !important;
  border-color: var(--bc-accent, #315f72) !important;
}

.bib-entries {
  max-height: 320px;
  overflow-y: auto;
  margin-bottom: 0.5rem;
}

.bib-actions {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-top: 0.35rem;
}

.bib-btn {
  width: 100%;
  padding: 0.4rem 0.6rem;
  font-size: 0.75rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--color-border, #1e293b);
  border-radius: 6px;
  color: var(--bc-text, #e2e8f0);
  cursor: pointer;
  text-align: center;
}

.bib-btn:hover { background: rgba(255,255,255,0.1); }

.bib-btn-accent {
  background: rgba(49, 95, 114, 0.18);
  border-color: var(--bc-accent, #315f72);
  color: var(--bc-accent, #315f72);
  font-weight: 600;
}

.bib-btn-accent:hover { background: rgba(49, 95, 114, 0.3); }

.bib-btn-sm {
  font-size: 0.7rem;
  padding: 0.3rem 0.5rem;
}

.bib-empty, .bib-loading, .bib-error, .bib-note {
  font-size: 0.7rem;
  color: var(--bc-text-muted, #8896ab);
  padding: 0.4rem 0;
}

.bib-error { color: #ef4444; }

/* Inline citation mark in TipTap */
.bc-citation-mark {
  color: var(--bc-accent, #315f72);
  font-weight: 600;
  cursor: pointer;
  border-bottom: 1px dashed var(--bc-accent, #315f72);
}

/* Citation typeahead popup */
.bc-citation-popup {
  position: absolute;
  z-index: 9999;
  min-width: 280px;
  max-width: 380px;
  background: #ffffff;
  border: 1px solid var(--color-border, #1e293b);
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.6);
  padding: 0.5rem;
}

.bc-citation-popup input {
  width: 100%;
  padding: 0.375rem 0.625rem;
  font-size: 0.8rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--color-border, #1e293b);
  border-radius: 5px;
  color: var(--bc-text, #e2e8f0);
  outline: none;
  margin-bottom: 0.4rem;
}

#bc-cit-results {
  max-height: 220px;
  overflow-y: auto;
}

.bc-cit-result {
  padding: 0.4rem 0.5rem;
  border-radius: 5px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.bc-cit-result:hover, .bc-cit-selected {
  background: rgba(49, 95, 114, 0.14);
}

.bc-cit-title { font-size: 0.8rem; color: var(--bc-text, #e2e8f0); }
.bc-cit-meta  { font-size: 0.65rem; color: var(--bc-text-muted, #8896ab); }
.bc-cit-no-results { font-size: 0.7rem; color: var(--bc-text-muted, #8896ab); padding: 0.4rem; }

/* ── Responsive breakpoints ───────────────────────────────────────────── */

@media (max-width: 768px) {
  /* Grid layouts → single column */
  .bc-card-grid,
  .bc-option-grid,
  .bc-voice-grid {
    grid-template-columns: 1fr;
  }

  .bc-preview-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  /* Multi-panel studio layouts → stacked */
  .bc-studio-layout,
  .bc-two-panel,
  .bc-editor-layout {
    flex-direction: column !important;
    grid-template-columns: 1fr !important;
  }

  /* Font sizes scale down ~10% */
  .bc-studio-header h1 {
    font-size: calc(var(--bc-font-size-6) * 0.9);
  }

  .bc-studio-header p {
    font-size: calc(var(--bc-font-size-4) * 0.9);
  }

  .bc-brand {
    font-size: calc(var(--bc-font-size-4) * 0.9);
  }

  /* Nav collapses to hamburger (hamburger already shown via bc-studio at 900px;
     here we hide the desktop nav links in favour of the drawer) */
  .bc-topbar-inner .bc-nav {
    display: none;
  }

  .bc-hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  /* Topbar padding uses safe area */
  .bc-topbar {
    padding-left: max(var(--bc-space-4), env(safe-area-inset-left, 0px));
    padding-right: max(var(--bc-space-4), env(safe-area-inset-right, 0px));
  }

  /* Container padding reduces */
  .bc-container,
  .bc-container-narrow,
  .container {
    padding-left: var(--bc-space-4);
    padding-right: var(--bc-space-4);
  }

  /* Studio header padding reduces */
  .bc-studio-header {
    padding: var(--bc-space-7) var(--bc-space-4) var(--bc-space-6);
  }

  /* Steps: hide labels on mobile */
  .bc-step-label {
    display: none;
  }

  /* Audio player stacks */
  .bc-audio-player {
    flex-direction: column;
    align-items: flex-start;
  }

  /* Actions stack */
  .bc-actions {
    align-items: stretch;
    flex-direction: column;
  }

  /* Footer collapses */
  .bc-footer-links,
  .bc-footer-ecosystem {
    gap: var(--bc-space-3);
  }
}

@media (max-width: 480px) {
  /* All panels go full-width, padding reduces to 1rem */
  .bc-container,
  .bc-container-narrow,
  .container,
  .bc-studio-header {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  /* Preview grid → single column */
  .bc-preview-grid {
    grid-template-columns: 1fr;
  }

  /* Inline row → column */
  .bc-inline {
    flex-direction: column;
    align-items: stretch;
  }

  /* Step numbers only on tiny phones */
  .bc-step:not(:last-child)::after {
    display: none;
  }

  /* Panel padding 1rem */
  .bc-page-note,
  .bc-option {
    padding: 1rem;
  }
}

/* Breadcrumb nav */
.bc-breadcrumb { font-size: 0.8125rem; padding: 0.5rem 1.5rem; }
.bc-breadcrumb ol { list-style: none; display: flex; gap: 0.5rem; margin: 0; padding: 0; }
.bc-breadcrumb li + li::before { content: "/"; opacity: 0.4; }
.bc-breadcrumb a { color: var(--bc-color-muted, #888); text-decoration: none; }
.bc-breadcrumb a:hover { color: var(--bc-color-text, #fff); }
.bc-breadcrumb [aria-current="page"] { color: var(--bc-color-text, #fff); }