/* =====================================================================
   BookPilot AI — application shell
   Desktop: a sidebar SaaS dashboard. Mobile: a modern app with bottom
   navigation. Same markup, different layout.
   ===================================================================== */

.bp-app {
  display: grid;
  grid-template-columns: var(--bp-sidebar-width) minmax(0, 1fr);
  min-height: 100vh;
}

/* ---- Sidebar ------------------------------------------------------- */

.bp-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: var(--bp-2);
  padding: var(--bp-4) var(--bp-3);
  border-right: 1px solid var(--bp-border);
  background: var(--bp-surface);
  overflow-y: auto;
}
.bp-sidebar__brand {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: var(--bp-2) var(--bp-3) var(--bp-4);
  font-family: var(--bp-font-serif);
  font-size: 1.08rem;
  color: var(--bp-text);
}
.bp-sidebar__brand:hover { text-decoration: none; }
.bp-sidebar__mark {
  display: inline-block;
  width: 25px;
  height: 25px;
  background: url('/assets/brand/logo-mark.svg') center / contain no-repeat;
}
/* Two-tone artwork cannot be recoloured with currentColor, so the dark
   theme gets its own file — same selector pair the tokens use. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) .bp-sidebar__mark {
    background-image: url('/assets/brand/logo-mark-dark.svg');
  }
}
:root[data-theme='dark'] .bp-sidebar__mark {
  background-image: url('/assets/brand/logo-mark-dark.svg');
}
.bp-nav-group { display: flex; flex-direction: column; gap: 2px; }
.bp-nav-item {
  display: flex;
  align-items: center;
  gap: var(--bp-3);
  padding: 8px var(--bp-3);
  border-radius: var(--bp-radius);
  color: var(--bp-text-muted);
  font-size: 0.9rem;
  transition: background-color 0.12s ease, color 0.12s ease;
}
.bp-nav-item:hover { background: var(--bp-sunken); color: var(--bp-text); text-decoration: none; }
.bp-nav-item--active { background: var(--bp-primary-soft); color: var(--bp-primary-text); font-weight: 500; }
.bp-nav-item__icon { width: 18px; text-align: center; flex: none; opacity: 0.85; }
.bp-nav-item__count {
  margin-left: auto;
  font-size: 0.72rem;
  padding: 0 6px;
  border-radius: var(--bp-radius-pill);
  background: var(--bp-primary);
  color: var(--bp-text-inverse);
}
.bp-sidebar__foot { margin-top: auto; padding-top: var(--bp-4); }

.bp-credits {
  padding: var(--bp-3);
  border: 1px solid var(--bp-border);
  border-radius: var(--bp-radius);
  background: var(--bp-sunken);
  font-size: 0.82rem;
}
.bp-credits__row { display: flex; justify-content: space-between; margin-bottom: 6px; }

/* ---- Topbar -------------------------------------------------------- */

.bp-main { display: flex; flex-direction: column; min-width: 0; }

.bp-topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: var(--bp-3);
  height: var(--bp-topbar-height);
  padding: 0 var(--bp-6);
  border-bottom: 1px solid var(--bp-border);
  background: color-mix(in srgb, var(--bp-page) 90%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
}
.bp-topbar__title { font-size: 1.02rem; font-weight: 600; }
.bp-topbar__actions { display: flex; align-items: center; gap: var(--bp-2); margin-left: auto; }

.bp-icon-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid transparent;
  border-radius: var(--bp-radius);
  background: none;
  color: var(--bp-text-muted);
  font-size: 0.95rem;
  cursor: pointer;
}
.bp-icon-btn:hover { background: var(--bp-sunken); color: var(--bp-text); }
.bp-icon-btn__dot {
  position: absolute;
  top: 6px;
  right: 7px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--bp-danger);
  border: 1.5px solid var(--bp-page);
}

.bp-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bp-primary-soft);
  border: 1px solid var(--bp-primary-border);
  color: var(--bp-primary-text);
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
}

.bp-menu {
  position: absolute;
  top: calc(var(--bp-topbar-height) - 8px);
  right: var(--bp-6);
  z-index: 60;
  min-width: 220px;
  padding: var(--bp-2);
  border: 1px solid var(--bp-border);
  border-radius: var(--bp-radius-lg);
  background: var(--bp-raised);
  box-shadow: var(--bp-shadow-lg);
}
.bp-menu__item {
  display: flex;
  align-items: center;
  gap: var(--bp-3);
  width: 100%;
  padding: 8px var(--bp-3);
  border: 0;
  border-radius: var(--bp-radius-sm);
  background: none;
  color: var(--bp-text);
  font: inherit;
  font-size: 0.9rem;
  text-align: left;
  cursor: pointer;
}
.bp-menu__item:hover { background: var(--bp-sunken); text-decoration: none; }
.bp-menu__head { padding: var(--bp-2) var(--bp-3); border-bottom: 1px solid var(--bp-border); margin-bottom: var(--bp-2); }

.bp-notifications {
  position: absolute;
  top: calc(var(--bp-topbar-height) - 8px);
  right: var(--bp-6);
  z-index: 60;
  width: min(380px, calc(100vw - 32px));
  max-height: 70vh;
  overflow-y: auto;
  border: 1px solid var(--bp-border);
  border-radius: var(--bp-radius-lg);
  background: var(--bp-raised);
  box-shadow: var(--bp-shadow-lg);
}
.bp-notification {
  display: block;
  padding: var(--bp-3) var(--bp-4);
  border-bottom: 1px solid var(--bp-border);
  color: inherit;
}
.bp-notification:hover { background: var(--bp-sunken); text-decoration: none; }
.bp-notification--unread { background: var(--bp-primary-soft); }
.bp-notification:last-child { border-bottom: 0; }

/* ---- Content ------------------------------------------------------- */

.bp-view {
  flex: 1;
  width: 100%;
  max-width: var(--bp-content-max);
  margin: 0 auto;
  padding: var(--bp-6);
}
.bp-page-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--bp-4);
  flex-wrap: wrap;
  margin-bottom: var(--bp-6);
}
.bp-page-head h1 { font-size: 1.55rem; font-family: var(--bp-font-serif); font-weight: 400; }
.bp-page-head p { margin: 4px 0 0; color: var(--bp-text-muted); font-size: 0.92rem; max-width: 62ch; }

/* The demo ribbon at the top of every screen in the demo workspace. */
.bp-demo-bar {
  display: flex;
  align-items: center;
  gap: var(--bp-3);
  flex-wrap: wrap;
  padding: 10px var(--bp-6);
  background: var(--bp-accent-soft);
  border-bottom: 1px solid var(--bp-accent-border);
  color: var(--bp-accent);
  font-size: 0.85rem;
}

/* ---- Mobile -------------------------------------------------------- */

.bp-bottom-nav { display: none; }

@media (max-width: 900px) {
  .bp-app { grid-template-columns: 1fr; }
  .bp-sidebar { display: none; }
  .bp-view { padding: var(--bp-4) var(--bp-4) calc(var(--bp-16) + var(--bp-6)); }
  .bp-topbar { padding: 0 var(--bp-4); }
  .bp-menu, .bp-notifications { right: var(--bp-4); }
  /* The ribbon is a row of three things on desktop; on a phone that
     squeezes the sentence into a column two words wide. Stack it. */
  .bp-demo-bar {
    padding: 10px var(--bp-4);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--bp-2);
  }
  .bp-demo-bar > span:not(.bp-demo-badge) { flex: none; }

  /* The bottom nav and each page's own primary button already cover
     this, and dropping it stops the topbar crowding. */
  .bp-topbar__actions .bp-btn--primary { display: none; }

  .bp-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 50;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    border-top: 1px solid var(--bp-border);
    background: var(--bp-surface);
    padding-bottom: env(safe-area-inset-bottom, 0);
  }
  .bp-bottom-nav__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 9px 4px;
    color: var(--bp-text-subtle);
    font-size: 0.66rem;
  }
  .bp-bottom-nav__item:hover { text-decoration: none; }
  .bp-bottom-nav__item--active { color: var(--bp-primary); }
  .bp-bottom-nav__icon { font-size: 1.05rem; line-height: 1; }
}

/* ---- Auth screens -------------------------------------------------- */

.bp-auth {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: var(--bp-6) var(--bp-4);
}
.bp-auth__card {
  width: 100%;
  max-width: 420px;
  padding: var(--bp-8);
  border: 1px solid var(--bp-border);
  border-radius: var(--bp-radius-xl);
  background: var(--bp-surface);
  box-shadow: var(--bp-shadow);
}
.bp-auth__brand { display: flex; align-items: center; gap: 8px; justify-content: center; margin-bottom: var(--bp-5); font-family: var(--bp-font-serif); font-size: 1.2rem; }

/* ---- Onboarding ---------------------------------------------------- */

.bp-onboarding { max-width: 680px; margin: 0 auto; padding: var(--bp-10) var(--bp-4) var(--bp-16); }
.bp-onboarding__steps { display: flex; gap: 6px; margin-bottom: var(--bp-8); }
.bp-onboarding__pip { flex: 1; height: 3px; border-radius: 2px; background: var(--bp-border); }
.bp-onboarding__pip--done { background: var(--bp-primary); }

/* ---- Book cards ---------------------------------------------------- */

.bp-book-card { display: flex; gap: var(--bp-4); padding: var(--bp-4); }
.bp-book-card__cover { width: 74px; flex: none; }
.bp-book-card__body { min-width: 0; flex: 1; }

.bp-book-hero { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: var(--bp-6); }
@media (max-width: 640px) {
  .bp-book-hero { grid-template-columns: 92px minmax(0, 1fr); gap: var(--bp-4); }
}

/* ---- Personas and angles ------------------------------------------- */

.bp-persona { padding: var(--bp-5); }
.bp-persona__name { font-family: var(--bp-font-serif); font-size: 1.22rem; margin-bottom: var(--bp-1); }
.bp-persona dl { display: grid; gap: var(--bp-3); margin: var(--bp-4) 0 0; }
.bp-persona dt { font-size: 0.72rem; letter-spacing: 0.07em; text-transform: uppercase; color: var(--bp-text-subtle); font-weight: 600; }
.bp-persona dd { margin: 3px 0 0; font-size: 0.9rem; color: var(--bp-text-muted); }

.bp-angle { padding: var(--bp-5); display: flex; flex-direction: column; gap: var(--bp-3); }
.bp-angle__hook {
  font-family: var(--bp-font-serif);
  font-size: 1.06rem;
  line-height: 1.35;
  padding: var(--bp-3) var(--bp-4);
  border-left: 3px solid var(--bp-primary);
  background: var(--bp-sunken);
  border-radius: 0 var(--bp-radius) var(--bp-radius) 0;
}

/* ---- Creatives ----------------------------------------------------- */

.bp-creative { display: flex; flex-direction: column; overflow: hidden; }
.bp-creative__preview {
  aspect-ratio: 4 / 5;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: var(--bp-2);
  padding: var(--bp-4);
  background: linear-gradient(160deg, var(--bp-primary-soft), var(--bp-accent-soft));
  border-bottom: 1px solid var(--bp-border);
}
.bp-creative__preview--reel { aspect-ratio: 9 / 16; }
.bp-creative__headline { font-family: var(--bp-font-serif); font-size: 1.04rem; line-height: 1.28; }
.bp-creative__body { padding: var(--bp-4); display: flex; flex-direction: column; gap: var(--bp-3); flex: 1; }
.bp-creative__footer { margin-top: auto; display: flex; gap: var(--bp-2); flex-wrap: wrap; }

.bp-score {
  display: inline-flex;
  align-items: baseline;
  gap: 3px;
  font-variant-numeric: tabular-nums;
}
.bp-score b { font-size: 1.05rem; font-weight: 600; }
.bp-score-bars { display: grid; gap: 7px; }
.bp-score-bar { display: grid; grid-template-columns: 116px 1fr 34px; gap: var(--bp-3); align-items: center; font-size: 0.8rem; }

/* ---- Wizard -------------------------------------------------------- */

.bp-wizard { max-width: 780px; margin: 0 auto; }
.bp-wizard__rail { display: flex; gap: var(--bp-2); flex-wrap: wrap; margin-bottom: var(--bp-6); }
.bp-wizard__step {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--bp-border);
  border-radius: var(--bp-radius-pill);
  font-size: 0.78rem;
  color: var(--bp-text-subtle);
}
.bp-wizard__step--active { border-color: var(--bp-primary); background: var(--bp-primary-soft); color: var(--bp-primary-text); font-weight: 500; }
.bp-wizard__step--done { border-color: var(--bp-success-border); background: var(--bp-success-soft); color: var(--bp-success); }
.bp-wizard__footer {
  display: flex;
  justify-content: space-between;
  gap: var(--bp-3);
  margin-top: var(--bp-8);
  padding-top: var(--bp-5);
  border-top: 1px solid var(--bp-border);
}

/* ---- Advisor ------------------------------------------------------- */

.bp-advisor { display: flex; flex-direction: column; gap: var(--bp-4); }
.bp-advisor__thread { display: flex; flex-direction: column; gap: var(--bp-4); min-height: 220px; }
.bp-bubble { max-width: 88%; padding: var(--bp-4); border-radius: var(--bp-radius-lg); font-size: 0.94rem; }
.bp-bubble--user {
  align-self: flex-end;
  background: var(--bp-primary-soft);
  border: 1px solid var(--bp-primary-border);
  color: var(--bp-primary-text);
}
.bp-bubble--ai { align-self: flex-start; background: var(--bp-surface); border: 1px solid var(--bp-border); }
.bp-advisor__composer { display: flex; gap: var(--bp-2); }

/* ---- Insight cards ------------------------------------------------- */

.bp-insight {
  display: flex;
  gap: var(--bp-3);
  padding: var(--bp-4);
  border: 1px solid var(--bp-border);
  border-radius: var(--bp-radius);
  background: var(--bp-surface);
}
.bp-insight__icon { font-size: 1.05rem; flex: none; }
.bp-insight--winner { border-left: 3px solid var(--bp-success); }
.bp-insight--weak { border-left: 3px solid var(--bp-warning); }
.bp-insight--opportunity { border-left: 3px solid var(--bp-primary); }
.bp-insight--test { border-left: 3px solid var(--bp-info); }
.bp-insight--warning { border-left: 3px solid var(--bp-danger); }

/* ---- Misc ---------------------------------------------------------- */

.bp-kv { display: grid; grid-template-columns: minmax(120px, auto) 1fr; gap: var(--bp-2) var(--bp-4); font-size: 0.9rem; }
.bp-kv dt { color: var(--bp-text-subtle); }
.bp-kv dd { margin: 0; }

.bp-code {
  display: block;
  padding: var(--bp-3);
  border: 1px solid var(--bp-border);
  border-radius: var(--bp-radius);
  background: var(--bp-sunken);
  font-family: var(--bp-font-mono);
  font-size: 0.8rem;
  overflow-x: auto;
  white-space: pre;
}

.bp-loading { display: grid; gap: var(--bp-4); }
.bp-loading__row { height: 74px; border-radius: var(--bp-radius); }