/* Runary — app.css
   Theme colors are injected server-side as :root { --bt-xxx } via themes.json + ThemeCatalog.
   This file contains only component styles that reference those CSS variables.
*/

/* ========================================
   BASE
   ======================================== */

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bt-bg);
  color: var(--bt-text);
  line-height: 1.5;
}

/* Focus indicators for keyboard navigation */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--bt-accent);
  outline-offset: 2px;
}

/* Scrollbars */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bt-scroll-track); }
::-webkit-scrollbar-thumb { background: var(--bt-scroll-thumb); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--bt-scroll-hover); }

/* Form inputs — theme-aware defaults */
input, select, textarea {
  background-color: var(--bt-input-bg);
  border: 1px solid var(--bt-border-input);
  color: var(--bt-text);
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
}
input::placeholder, textarea::placeholder { color: var(--bt-subtle); }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--bt-accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--bt-accent) 25%, transparent);
}

/* ========================================
   LAYOUT
   ======================================== */

.bt-app { min-height: 100vh; display: flex; flex-direction: column; }

.bt-header {
  background: var(--bt-surface);
  border-bottom: 1px solid var(--bt-border);
  flex-shrink: 0;
}

.bt-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.5rem;
  padding: 0 1.25rem;
}

.bt-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  flex-shrink: 0;
  text-decoration: none;
}
.bt-logo i { font-size: 1.25rem; color: var(--bt-accent-dim); }
.bt-logo span { font-weight: 700; color: var(--bt-text); font-size: 1rem; }

.bt-search-form { flex: 1; max-width: 28rem; margin: 0 1.5rem; }
.bt-search-wrap { position: relative; }
.bt-search-icon {
  position: absolute; left: 0.625rem; top: 50%; transform: translateY(-50%);
  color: var(--bt-muted); pointer-events: none; font-size: 0.875rem;
}
.bt-search-input {
  width: 100%;
  padding: 0.4rem 0.75rem 0.4rem 2rem;
  border-radius: 0.5rem;
  border: 1px solid var(--bt-border-input);
  background: var(--bt-bg);
  color: var(--bt-text);
  font-size: 0.8rem;
  outline: none;
  transition: border-color 0.15s;
}
.bt-search-input:focus { border-color: var(--bt-accent-dim); }

.bt-header-actions { display: flex; align-items: center; gap: 0.75rem; flex-shrink: 0; }

.bt-body { display: flex; flex: 1; min-height: 0; overflow: hidden; }

/* Sidebar */
.bt-sidebar {
  width: 14rem;
  background: var(--bt-surface);
  border-right: 1px solid var(--bt-border);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}
.bt-sidebar-nav {
  flex: 1; padding: 1.25rem 0.875rem;
  display: flex; flex-direction: column; gap: 0.25rem;
  overflow-y: auto;
}
.bt-sidebar-section {
  font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--bt-subtle); padding: 0 0.5rem; margin: 0 0 0.625rem; font-weight: 600;
}
.bt-sidebar-version {
  padding: 0.5rem 0.875rem; border-top: 1px solid var(--bt-border);
}
.bt-sidebar-version p {
  font-size: 0.6rem; color: var(--bt-faint); text-align: center; margin: 0;
}

.sidebar-link i { font-size: 1rem; width: 1rem; text-align: center; }

/* Main content */
.bt-main { flex: 1; overflow: auto; background: var(--bt-bg); }

/* Footer */
.bt-footer {
  background: var(--bt-surface);
  border-top: 1px solid var(--bt-border);
  flex-shrink: 0;
}
.bt-footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.625rem 1.5rem; font-size: 0.75rem; color: var(--bt-subtle);
}

/* ========================================
   COMPONENTS
   ======================================== */

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
  color: var(--bt-muted);
  background: transparent;
}
.sidebar-link:hover { background-color: var(--bt-border); color: var(--bt-text); }
.sidebar-link.active { background-color: var(--bt-border); color: var(--bt-text); }

.card {
  background-color: var(--bt-surface);
  border: 1px solid var(--bt-border);
  border-radius: 0.75rem;
  transition: border-color 0.15s;
}
.card:hover { border-color: var(--bt-border-input); }

/* Book card hover */
.book-card {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border-radius: 0.5rem;
  overflow: hidden;
  background: var(--bt-surface);
}
.book-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

/* Stat cards on dashboard */
.stat-card { display: flex; align-items: center; gap: 1rem; padding: 1.25rem; }
.stat-card-goal { flex-direction: column; text-align: center; }
.stat-goal-value { font-size: 1.5rem; font-weight: 700; color: var(--bt-accent); line-height: 1; }
.stat-icon {
  background: var(--bt-icon-bg); color: var(--bt-icon-text);
  border-radius: 0.625rem; padding: 0.75rem; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.stat-icon i { font-size: 1.25rem; }
.stat-value { font-size: 1.5rem; font-weight: 700; color: var(--bt-text); line-height: 1; }
.stat-label { font-size: 0.75rem; color: var(--bt-muted); margin-top: 0.25rem; }
.panel { background: var(--bt-surface); border: 1px solid var(--bt-border); border-radius: 0.75rem; padding: 1.25rem; }
.panel-title { font-size: 0.9rem; font-weight: 600; color: var(--bt-text); margin: 0 0 0.75rem; }

.modal-panel { background-color: var(--bt-surface); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.5rem 1rem; border-radius: 0.5rem; font-size: 0.875rem; font-weight: 500;
  border: none; cursor: pointer; text-decoration: none; transition: all 0.15s;
}
.btn-primary {
  background-color: var(--bt-accent-dark); color: #fff;
  border-radius: 0.5rem; padding: 0.5rem 1rem; font-size: 0.875rem; font-weight: 500;
  border: none; cursor: pointer; transition: filter 0.15s;
}
.btn-primary:hover { filter: brightness(1.15); }

.btn-secondary {
  background-color: var(--bt-border); color: var(--bt-text-dim);
  border-radius: 0.5rem; padding: 0.5rem 1rem; font-size: 0.875rem;
  border: none; cursor: pointer; transition: background 0.15s;
}
.btn-secondary:hover { background-color: var(--bt-border-input); }

.btn-outline {
  font-size: 0.75rem; color: var(--bt-muted);
  padding: 0.375rem 0.75rem; border-radius: 0.5rem;
  border: 1px solid var(--bt-border-input); background: transparent;
  cursor: pointer; transition: color 0.15s, border-color 0.15s;
}
.btn-outline:hover { color: var(--bt-text); border-color: var(--bt-text); }

.btn-danger:hover { color: var(--bt-danger); border-color: var(--bt-danger); }

.btn-icon {
  position: relative; background: transparent; border: none; cursor: pointer;
  color: var(--bt-muted); font-size: 1.1rem; padding: 0.25rem;
  display: flex; align-items: center;
}
.btn-icon:hover { color: var(--bt-text); }

/* Notification badge */
.notif-badge {
  display: none; position: absolute; top: -2px; right: -4px;
  background: var(--bt-danger); color: #fff;
  font-size: 0.6rem; font-weight: 700; min-width: 1rem; height: 1rem;
  border-radius: 0.5rem; line-height: 1rem; text-align: center; padding: 0 0.2rem;
}

/* User avatar link */
.bt-user-link {
  display: flex; align-items: center; gap: 0.5rem;
  text-decoration: none; color: var(--bt-text);
}
.bt-avatar { width: 28px; height: 28px; border-radius: 50%; }
.bt-username { font-size: 0.85rem; font-weight: 500; }

/* Notification panel */
.bt-notif-panel {
  display: none; position: fixed; top: 3.75rem; right: 1rem;
  width: 22rem; max-height: 28rem; overflow-y: auto;
  background: var(--bt-surface); border: 1px solid var(--bt-border);
  border-radius: 0.625rem; box-shadow: 0 8px 24px rgba(0,0,0,0.25); z-index: 1000;
}
.bt-notif-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.75rem 1rem; border-bottom: 1px solid var(--bt-border);
}
.bt-notif-title { font-size: 0.8rem; font-weight: 600; color: var(--bt-text); }
.bt-notif-action { font-size: 0.7rem; color: var(--bt-accent-dim); background: none; border: none; cursor: pointer; }

/* Download indicator */
.bt-dl-indicator { position: fixed; bottom: 1rem; right: 1rem; z-index: 100; display: none; }
.bt-dl-btn {
  background: var(--bt-accent); color: #fff; border: none; border-radius: 50%;
  width: 3rem; height: 3rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3); position: relative;
}
.bt-dl-btn i { font-size: 1.25rem; }
.bt-dl-count {
  position: absolute; top: -4px; right: -4px;
  background: var(--bt-danger); color: #fff;
  font-size: 0.6rem; font-weight: 700; min-width: 1.1rem; height: 1.1rem;
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
}
.bt-dl-panel {
  display: none; position: absolute; bottom: 3.5rem; right: 0;
  width: 20rem; max-height: 16rem; overflow-y: auto;
  background: var(--bt-surface); border: 1px solid var(--bt-border);
  border-radius: 0.75rem; box-shadow: 0 4px 16px rgba(0,0,0,0.3); padding: 0.75rem;
}
.bt-dl-title { font-size: 0.75rem; font-weight: 600; color: var(--bt-text); margin: 0 0 0.5rem; }

/* Global progress bar */
.bt-progress-bar {
  height: 3px; background: transparent;
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
}
.bt-progress-fill { height: 100%; background: var(--bt-accent); width: 0%; transition: width 0.3s; }

/* Progress bars (generic) */
.progress-bar {
  width: 100%; height: 0.375rem;
  background-color: var(--bt-border); border-radius: 9999px; overflow: hidden;
}
.progress-bar-fill {
  height: 100%; background-color: var(--bt-accent);
  border-radius: 9999px; transition: width 0.3s ease;
}

/* ========================================
   TOASTS
   ======================================== */

#toast-container {
  position: fixed; bottom: 1.5rem; right: 1.5rem;
  display: flex; flex-direction: column; gap: 0.5rem;
  z-index: 9999; pointer-events: none;
}

.bt-toast {
  display: flex; align-items: center; gap: 0.625rem;
  padding: 0.625rem 1rem; border-radius: 0.5rem;
  font-size: 0.825rem; font-weight: 500;
  background: var(--bt-surface); border: 1px solid var(--bt-border);
  color: var(--bt-text); box-shadow: 0 4px 12px rgba(0,0,0,0.25);
  pointer-events: auto; animation: bt-toast-in 0.2s ease; max-width: 22rem;
}
.bt-toast.success { border-left: 3px solid var(--bt-accent); }
.bt-toast.error   { border-left: 3px solid var(--bt-danger); }
.bt-toast.info    { border-left: 3px solid var(--bt-muted); }

@keyframes bt-toast-in {
  from { opacity: 0; transform: translateY(0.5rem); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ========================================
   AUTH PAGES
   ======================================== */

.auth-page {
  min-height: 100vh; display: flex; align-items: center;
  justify-content: center; background: var(--bt-bg); padding: 1rem;
}
.auth-card-wrap { width: 100%; max-width: 22rem; }
.auth-header { text-align: center; margin-bottom: 1.5rem; }
.auth-header i { font-size: 2rem; color: var(--bt-accent-dim); }
.auth-header h1 { font-size: 1.25rem; font-weight: 700; color: var(--bt-text); margin: 0.5rem 0 0.25rem; }
.auth-header p { font-size: 0.8rem; color: var(--bt-subtle); }
.auth-form { display: flex; flex-direction: column; gap: 1rem; }
.auth-form label { display: block; font-size: 0.8rem; color: var(--bt-text-dim); margin-bottom: 0.375rem; }
.auth-form input {
  width: 100%; border-radius: 0.5rem; border: 1px solid var(--bt-border-input);
  padding: 0.625rem 0.875rem; font-size: 0.875rem; background: var(--bt-bg); color: var(--bt-text);
}
.auth-msg { display: none; margin-bottom: 1rem; padding: 0.75rem; border-radius: 0.5rem; font-size: 0.85rem; }
.auth-msg-success { background: rgba(52,211,153,0.1); border: 1px solid rgba(52,211,153,0.3); color: #34d399; }
.auth-msg-error { background: rgba(248,113,113,0.1); border: 1px solid rgba(248,113,113,0.3); color: #f87171; }
.auth-back { text-align: center; margin-top: 1rem; font-size: 0.85rem; color: var(--bt-subtle); }
.auth-back a { color: var(--bt-accent-dim); text-decoration: none; }
.auth-back a:hover { text-decoration: underline; }

/* ========================================
   PAGE COMPONENTS
   ======================================== */

/* Section header: title on left, "view all" link on right */
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1rem;
}
.section-heading {
  font-size: 1rem; font-weight: 700; color: var(--bt-text);
  display: flex; align-items: center; gap: 0.5rem; margin: 0;
}
.section-heading i { color: var(--bt-accent-dim); }
.section-link {
  font-size: 0.8rem; color: var(--bt-accent-dim); text-decoration: none;
}
.section-link:hover { text-decoration: underline; }

.section { margin-bottom: 2rem; }

/* Grids */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); gap: 1rem; }
.book-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 1rem; }
.library-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 0.75rem; }

/* Book grid card (thumbnail + title + author) */
.book-grid-card {
  text-decoration: none; background: var(--bt-surface);
  border: 1px solid var(--bt-border); border-radius: 0.75rem;
  display: flex; flex-direction: column; transition: border-color 0.15s;
}
.book-grid-card:hover { border-color: var(--bt-accent); }

.book-grid-cover {
  height: 10rem; background: var(--bt-bg);
  border-radius: 0.75rem 0.75rem 0 0; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.book-grid-cover img { width: 100%; height: 100%; object-fit: cover; }

.book-grid-info { padding: 0.625rem 0.75rem 0.75rem; }

.book-grid-title {
  font-size: 0.75rem; font-weight: 600; color: var(--bt-text);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.book-grid-author {
  font-size: 0.65rem; color: var(--bt-subtle);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  margin-top: 0.125rem;
}

/* Library quick-access card */
.library-card-link {
  text-decoration: none; background: var(--bt-surface);
  border: 1px solid var(--bt-border); border-radius: 0.75rem;
  padding: 1rem; display: flex; align-items: center; gap: 0.75rem;
  transition: border-color 0.15s;
}
.library-card-link:hover { border-color: var(--bt-accent); }

.library-card-icon {
  background: var(--bt-icon-bg); color: var(--bt-icon-text);
  border-radius: 0.375rem; padding: 0.5rem; flex-shrink: 0;
}
.library-card-name {
  font-size: 0.8rem; font-weight: 600; color: var(--bt-text);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.library-card-count { font-size: 0.7rem; color: var(--bt-subtle); margin-top: 0.125rem; }

/* Mini progress bar (reading progress on cards) */
.mini-progress { margin-top: 0.5rem; }
.mini-progress-bar {
  height: 0.2rem; background: var(--bt-border);
  border-radius: 9999px; overflow: hidden;
}
.mini-progress-fill {
  height: 100%; background: var(--bt-accent);
  border-radius: 9999px;
}
.mini-progress-text { font-size: 0.6rem; color: var(--bt-subtle); margin-top: 0.25rem; }

/* Goal progress bar */
.goal-bar { margin-top: 0.5rem; height: 0.25rem; background: var(--bt-border); border-radius: 9999px; overflow: hidden; }
.goal-bar-fill { height: 100%; background: var(--bt-accent); border-radius: 9999px; }

/* Text link button (underline on hover) */
.link-btn {
  font-size: 0.7rem; color: var(--bt-accent-dim); background: transparent;
  border: none; cursor: pointer; text-decoration: underline;
}

/* ========================================
   UTILITIES
   ======================================== */

.page-container { padding: 2rem; max-width: 80rem; margin: 0 auto; }
.page-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 1.5rem; }
.section-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 1rem; }

.flex-center { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-sm { gap: 0.5rem; }
.gap-md { gap: 1rem; }
.gap-lg { gap: 1.5rem; }

.text-muted { color: var(--bt-muted); }
.text-subtle { color: var(--bt-subtle); }
.text-sm { font-size: 0.85rem; }
.text-xs { font-size: 0.75rem; }
.text-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

.min-w-0 { min-width: 0; }

/* ========================================
   BOOK DETAIL PAGE
   ======================================== */

.book-detail { padding: 2rem; max-width: 56rem; margin: 0 auto; }
.book-header-layout { display: flex; gap: 1.5rem; }
.book-cover-wrap {
  flex-shrink: 0; width: 8rem; height: 11rem;
  background: var(--bt-border); border-radius: 0.5rem;
  overflow: hidden; display: flex; align-items: center; justify-content: center;
}
.book-cover-wrap img { width: 100%; height: 100%; object-fit: cover; }
.book-title { font-size: 1.5rem; font-weight: 700; color: var(--bt-text); margin-bottom: 0.375rem; }
.book-author-link { color: var(--bt-accent-dim); text-decoration: none; font-size: 1rem; }
.book-author-link:hover { text-decoration: underline; }
.book-meta { display: flex; flex-wrap: wrap; gap: 1rem; font-size: 0.8rem; color: var(--bt-subtle); margin-bottom: 1rem; }
.book-meta i { margin-right: 0.25rem; }
.book-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.book-actions .btn-primary,
.book-actions .btn-secondary { display: inline-flex; align-items: center; gap: 0.5rem; }
.book-actions a { text-decoration: none; }
.btn-danger-outline {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: transparent; border: 1px solid var(--bt-danger); color: var(--bt-danger);
  border-radius: 0.5rem; padding: 0.5rem 0.875rem; font-size: 0.875rem; cursor: pointer;
}
.btn-danger-outline:hover { background: var(--bt-danger-bg); }
.field-row { display: flex; align-items: center; gap: 0.75rem; margin-top: 1rem; }
.field-label { font-size: 0.8rem; color: var(--bt-subtle); }
.star-btn {
  background: transparent; border: none; cursor: pointer;
  font-size: 1.25rem; padding: 0; line-height: 1; transition: color 0.15s;
}
.tag-chip {
  display: inline-flex; align-items: center; gap: 0.25rem;
  font-size: 0.75rem; background: var(--bt-bg); color: var(--bt-text-dim);
  border: 1px solid var(--bt-border); border-radius: 9999px;
  padding: 0.2rem 0.625rem; text-decoration: none; transition: border-color 0.15s;
}
.tag-chip:hover { border-color: var(--bt-accent-dim); }
.detail-panel {
  display: none; margin-top: 1rem; padding: 1.25rem;
  background: var(--bt-surface); border: 1px solid var(--bt-border); border-radius: 0.75rem;
}
.form-label {
  display: block; font-size: 0.8rem; font-weight: 500;
  color: var(--bt-muted); margin-bottom: 0.375rem;
}
.book-description { font-size: 0.875rem; color: var(--bt-subtle); margin-bottom: 1rem; }
.book-series { font-size: 0.8rem; color: var(--bt-subtle); margin-bottom: 0.75rem; display: flex; align-items: center; gap: 0.375rem; }
.detail-section { margin-bottom: 1.5rem; }

/* Filter selects (library page, search) */
.filter-select {
  border-radius: 0.5rem; border: 1px solid var(--bt-border-input);
  padding: 0.4rem 0.75rem; font-size: 0.8rem;
  background: var(--bt-input-bg); color: var(--bt-muted); cursor: pointer;
}

/* Profile definition list */
.profile-dl {
  display: grid; grid-template-columns: auto 1fr;
  gap: 0.5rem 1.5rem; font-size: 0.85rem;
}
.profile-dl dt { color: var(--bt-subtle); font-weight: 500; }
.profile-dl dd { color: var(--bt-text); margin: 0; }

/* Profile card section heading */
.profile-section-title {
  font-size: 0.9rem; color: var(--bt-text-dim); margin-bottom: 1rem;
  display: flex; align-items: center; gap: 0.5rem;
}
.profile-section-title i { color: var(--bt-accent-dim); }

/* Card padding variants */
.card-pad { padding: 1.5rem; margin-bottom: 1.25rem; }

/* Admin table */
.bt-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.bt-table thead tr { border-bottom: 2px solid var(--bt-border); }
.bt-table th {
  text-align: left; padding: 0.625rem 1rem; color: var(--bt-muted);
  font-weight: 600; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em;
}
.bt-table td { padding: 0.75rem 1rem; }
.bt-table tbody tr { border-bottom: 1px solid var(--bt-border); transition: background 0.12s; }
.bt-table tbody tr:hover { background: var(--bt-bg); }

/* Dialog / modal */
dialog {
  border: none; border-radius: 1rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  max-width: 28rem; width: 100%; padding: 1.5rem;
}
dialog::backdrop { background: rgba(0, 0, 0, 0.5); }

/* HTMX loading indicator */
.htmx-request .loading { display: inline-block; }
.htmx-request.loading { opacity: 0.5; }

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes bt-spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes bt-progress-pulse { 0%, 100% { width: 30%; } 50% { width: 70%; } }

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 768px) {
  .bt-sidebar { display: none; }
  .bt-search-form { margin: 0 0.75rem; }
  .bt-header-inner { padding: 0 0.75rem; }
  .bt-footer-inner { flex-direction: column; gap: 0.25rem; text-align: center; }
  .page-container { padding: 1rem; }
  .bt-username { display: none; }
}

@media (max-width: 480px) {
  .bt-search-form { display: none; }
  .bt-header-inner { height: 3rem; }
}