/* =========================================================
   THEME TOKENS (Light / Dark)
   ========================================================= */

/* Светлая тема */
:root{
  /* База */
  --bg: #f7f9fc;
  --surface: #ffffff;
  --text: #1f2a37;
  --muted: #6b7280;

  /* Акценты / бренд */
  --accent: #0ea5b7;
  --accent-hover: #0b90a0;
  --brand-title: #0ea5b7;
  --brand-underline: #0ea5b7;

  /* Навигация */
  --nav-bg: #ffffff;
  --nav-link: #1f2a37;
  --nav-link-hover: #0b90a0;

  /* Границы / тени */
  --border: #e5e7eb;
  --shadow: 0 12px 28px rgba(0,0,0,.10);

  /* Формы */
  --input-bg: #ffffff;
  --input-text: #1f2a37;
  --input-border: #cfd6de;
  --input-ph: #8a93a1;

  /* Dropdown */
  --dropdown-bg: #ffffff;
  --dropdown-border: #e5e7eb;

  /* Кнопка поиска */
  --search-btn-bg: #1b2753;
  --search-btn-text: #ffffff;
  --search-btn-border: #1b2753;

  /* Тумблер темы */
  --toggle-bg: #1b2753;
  --toggle-icon: #ffffff;

  /* Общая высота превью */
  --thumb-h: 200px;

  /* ===== стеклянный режим ===== */
  --nav-bg-rgb: 255,255,255;
  --nav-bg-alpha: .82;
  --surface-rgb: 255,255,255;
  --glass-alpha: .72;
  --glass-blur: 10px;

  /* ===== СИНИЙ ТИНТ (светлая) ===== */
  --tint-rgb: 14,165,183;
  --tint-alpha: .18;
  --tint-alpha-strong: .28;
}

/* Тёмная тема */
html.theme-dark,
body.theme-dark{
  --bg: #1b2753;
  --surface: #121826;
  --text: #f3f7fd;
  --muted: #b5c1d1;

  --accent: #67e8f9;
  --accent-hover: #22d3ee;

  --nav-bg: #1b2753;
  --nav-link: #ffffff;
  --nav-link-hover: #67e8f9;

  --brand-title: #67e8f9;
  --brand-underline: #67e8f9;

  --border: #2a344a;
  --shadow: 0 12px 28px rgba(0,0,0,.35);

  --input-bg: #0e1324;
  --input-text: #eaf2ff;
  --input-border: #2a344a;
  --input-ph: #96a3ba;

  --dropdown-bg: #111a33;
  --dropdown-border: #2a344a;

  --search-btn-bg: #67e8f9;
  --search-btn-text: #1b2753;
  --search-btn-border: #67e8f9;

  --toggle-bg: #ffffff;
  --toggle-icon: #1b2753;

  /* стеклянный режим */
  --nav-bg-rgb: 27,39,83;
  --nav-bg-alpha: .88;
  --surface-rgb: 18,24,38;
  --glass-alpha: .58;
  --glass-blur: 12px;

  /* СИНИЙ ТИНТ (тёмная) */
  --tint-rgb: 27,39,83;
  --tint-alpha: .22;
  --tint-alpha-strong: .32;
}


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

html,
body{
  background: var(--bg);
  color: var(--text);
  margin: 0;
  padding: 0;
}

html.theme-dark body,
body.theme-dark{
  background-color: var(--bg) !important;
  color: var(--text);
}

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

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

.text-title{
  color: var(--brand-title) !important;
}

.text-title-underline{
  position: relative;
}

.text-title-underline::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-2px;
  height:2px;
  border-radius:2px;
  background: var(--brand-underline);
}

.navbar,
.card,
.dropdown-menu,
.modal-content,
.form-control,
body,
html{
  transition:
    background-color .18s ease,
    color .18s ease,
    border-color .18s ease,
    box-shadow .18s ease;
}

.theme-hr{
  border: 0;
  border-top: 1px solid var(--border);
  opacity: .7;
  margin: .75rem 0 1.25rem;
}


/* =========================================================
   SURFACES
   ========================================================= */

.card,
.modal-content{
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.dropdown-menu{
  background: var(--dropdown-bg);
  border-color: var(--dropdown-border);
  box-shadow: var(--shadow);
}

.dropdown-item{
  color: var(--text);
}

.dropdown-item:hover{
  background: rgba(0,227,248,.08);
}

.form-control,
.custom-select{
  background: var(--input-bg);
  color: var(--input-text);
  border-color: var(--input-border);
}

.form-control::placeholder{
  color: var(--input-ph);
}

.page-link{
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}

.page-link:hover{
  background: rgba(0,227,248,.08);
}


/* =========================================================
   SEARCH WIDGET STYLES (подсказки)
   ========================================================= */

.btk-suggest-wrap{
  position: relative;
  width: 100%;
  overflow: visible !important;
}

.btk-suggest{
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 2px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  z-index: 9999;
  max-height: 400px;
  overflow-y: auto;
  border-radius: 8px;
  padding: 0;
}

.suggest-list{
  list-style: none;
  margin: 0;
  padding: 0;
}

.suggest-item{
  padding: 6px 8px;
}

.suggest-item + .suggest-item{
  border-top: 1px solid rgba(0,0,0,.06);
}

.suggest-item a{
  color: var(--text);
  display: flex;
  align-items: center;
  text-decoration: none;
}

.suggest-item:hover{
  background: rgba(0,227,248,.08);
}

.suggest-item .thumb{
  width:40px;
  height:56px;
  flex:0 0 40px;
  border-radius:4px;
  overflow:hidden;
  background:#e9eef5;
  margin-right:.5rem;
  display:flex;
  align-items:center;
  justify-content:center;
}

.suggest-item .thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}

.suggest-item .meta{
  min-width: 0;
}

.suggest-item .title{
  font-weight:600;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.suggest-item .sg-year{
  color: var(--muted);
  font-weight: 500;
  margin-left: 6px;
}

.suggest-empty{
  padding: 6px 8px;
}

.suggest-footer{
  position: sticky;
  bottom: 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 8px 10px;
}

.all-results-link{
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
}

.all-results-link:hover{
  color: var(--accent-hover);
}

/* Подсветка совпадений */
.suggest-list .sg-hl{
  background: #ffe58f;
  color: inherit;
  padding: 0 .12rem;
  border-radius: .2rem;
  font-weight: 600;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.06);
}

html.theme-dark .suggest-list .sg-hl{
  background:#6b5b00;
  color:#fff;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.1);
}


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

.thumb-fixed{
  width:100%;
  height:200px;
  object-fit:cover;
  object-position:center;
}

.page-background{
  position: relative;
  background-size: cover;
  background-position: center;
}

.page-overlay{
  position: absolute;
  inset:0;
  background: rgba(var(--tint-rgb), .16);
}

html.theme-dark .page-overlay{
  background: rgba(var(--tint-rgb), .22);
}

.page-content{
  position: relative;
  z-index: 2;
}

.categories-section{
  margin: 2rem 0;
  position: relative;
  z-index: 2;
}

.theme-section-parallax{
  background-attachment: fixed;
  background-size: cover;
  background-position: center;
  position: relative;
  color: #fff;
}

.theme-section-parallax .overlay{
  position: absolute;
  inset:0;
  background: linear-gradient(180deg, rgba(var(--tint-rgb), .32), rgba(var(--tint-rgb), .46));
}

html.theme-dark .theme-section-parallax .overlay{
  background: linear-gradient(180deg, rgba(var(--tint-rgb), .38), rgba(var(--tint-rgb), .54));
}

.live-content .live-counter{
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

.live-content .count-label{
  font-size: 0.95rem;
  color: var(--muted);
}

.live-events{
  overflow: hidden;
  position: relative;
  height: 2rem;
}

.live-events .events-wrapper{
  display: flex;
  flex-direction: column;
  animation: scrollEvents 12s linear infinite;
}

.live-events .event-item{
  color: var(--text);
  font-size: 0.9rem;
  padding: 0.2rem 0;
  text-align: center;
}

@keyframes scrollEvents{
  0%{
    transform: translateY(0);
  }

  100%{
    transform: translateY(-100%);
  }
}


/* =========================================================
   GLOBAL GLASS MODE (включается классом body.use-glass)
   ========================================================= */

body.use-glass{
  position: relative;
  background-attachment: fixed;
}

body.use-glass::before{
  content:"";
  position: fixed;
  inset: 0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(1100px 380px at 10% -10%, rgba(0,227,248,.14), transparent 60%),
    radial-gradient(900px 300px at 100% 110%, rgba(0,227,248,.08), transparent 60%);
}

body.use-glass::after{
  content:"";
  position: fixed;
  inset:0;
  z-index:0;
  background: rgba(var(--tint-rgb), var(--tint-alpha));
  backdrop-filter: saturate(1.06) blur(6px);
  -webkit-backdrop-filter: saturate(1.06) blur(6px);
}

body.use-glass .page-content,
body.use-glass main,
body.use-glass #content,
body.use-glass .wrap{
  position: relative;
  z-index:1;
}

body.use-glass .card,
body.use-glass .modal-content,
body.use-glass .dropdown-menu,
body.use-glass .page-link,
body.use-glass .list-group,
body.use-glass .toast,
body.use-glass .popover,
body.use-glass .offcanvas{
  background: rgba(var(--surface-rgb), var(--glass-alpha)) !important;
  border-color: rgba(255,255,255,.18);
  backdrop-filter: blur(var(--glass-blur)) saturate(1.05);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(1.05);
  color: var(--text);
}

body.use-glass .card{
  box-shadow: 0 10px 30px rgba(0,0,0,.15);
}

body.use-glass .dropdown-menu,
body.use-glass .btk-suggest{
  z-index: 6000;
}

body.use-glass .glass-section{
  position: relative;
  background: rgba(var(--surface-rgb), calc(var(--glass-alpha) - .12));
  backdrop-filter: blur(calc(var(--glass-blur) - 2px)) saturate(1.05);
  -webkit-backdrop-filter: blur(calc(var(--glass-blur) - 2px)) saturate(1.05);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 16px;
  box-shadow: 0 14px 34px rgba(0,0,0,.16);
  overflow: hidden;
}

body.use-glass .glass-section::before{
  content:"";
  position:absolute;
  inset:0;
  background: linear-gradient(to bottom right, rgba(255,255,255,.06), rgba(255,255,255,0));
  pointer-events:none;
}


/* =========================================================
   FOOTER
   ========================================================= */

.site-footer{
  color:#fff;
  background: none;
  position: relative;
  overflow: hidden;
}

.site-footer .footer-hero{
  position: relative;
  padding: 48px 0 36px;
  background: rgba(var(--nav-bg-rgb), calc(var(--nav-bg-alpha) + .05));
  backdrop-filter: saturate(1.1) blur(8px);
  -webkit-backdrop-filter: saturate(1.1) blur(8px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
}

.site-footer .footer-hero-overlay{
  position:absolute;
  inset:0;
  background:
    radial-gradient(1200px 400px at 10% -10%, rgba(0,227,248,.15), transparent 60%),
    radial-gradient(800px 300px at 100% 110%, rgba(0,227,248,.08), transparent 60%);
  pointer-events:none;
}

.site-footer .footer-title{
  color: var(--brand-title);
  margin:0;
}

.site-footer .footer-subtitle{
  color: rgba(255,255,255,.85);
}

.site-footer .footer-newsletter .form-control{
  background: rgba(255,255,255,.9);
  border-color: rgba(255,255,255,.35);
}

html.theme-dark .site-footer .footer-newsletter .form-control{
  background: rgba(0,0,0,.35);
  color: #fff;
  border-color: rgba(255,255,255,.15);
}

.site-footer .app-promo{
  background: rgba(0,0,0,.18);
  border: 1px solid rgba(255,255,255,.12);
  color: #fff;
}

html.theme-dark .site-footer .app-promo{
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.12);
}

.site-footer .app-badge{
  width:54px;
  height:54px;
  border-radius:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  background: linear-gradient(135deg, rgba(0,227,248,.8), rgba(14,165,183,.8));
  box-shadow: var(--shadow);
  font-size: 1.35rem;
}

.site-footer .footer-links{
  background: rgba(0,0,0,.25);
  border-top: 1px solid rgba(255,255,255,.08);
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.site-footer .footer-links h6{
  color:#fff;
  margin-bottom:.25rem;
}

.site-footer .footer-underline{
  width:60px;
  height:2px;
  background:#fff;
  opacity:.9;
  border-radius:2px;
}

.site-footer .footer-links a{
  color:#fff;
  text-decoration:none;
}

.site-footer .footer-links a:hover{
  color: var(--brand-title);
}

.site-footer .footer-bottom{
  background: rgba(0,0,0,.2);
  border-top: 1px solid rgba(255,255,255,.08);
}

.site-footer .socials .btn{
  border-color: rgba(255,255,255,.6);
  color: #fff;
}

.site-footer .socials .btn:hover{
  background: var(--brand-title);
  border-color: var(--brand-title);
  color: #1b2753;
}

@media (max-width: 991.98px){
  .site-footer .footer-hero{
    padding: 36px 0 28px;
  }
}


/* =========================================================
   GLASS — только внутри секции
   ========================================================= */

.glass-scope{
  position: relative;
  isolation: isolate;
}

.glass-scope::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(1100px 380px at 10% -10%, rgba(0,227,248,.14), transparent 60%),
    radial-gradient(900px 300px at 100% 110%, rgba(0,227,248,.08), transparent 60%);
  z-index:0;
  pointer-events:none;
}

.glass-scope::after{
  content:"";
  position:absolute;
  inset:0;
  background: linear-gradient(
    180deg,
    rgba(var(--tint-rgb), var(--tint-alpha)) 0%,
    rgba(var(--tint-rgb), var(--tint-alpha-strong)) 100%
  );
  backdrop-filter: saturate(1.06) blur(6px);
  -webkit-backdrop-filter: saturate(1.06) blur(6px);
  z-index:0;
}

.glass-scope .glass-content{
  position: relative;
  z-index: 1;
}


/* =========================================================
   ХЛЕБНЫЕ КРОШКИ
   ========================================================= */

.crumbs-bar{
  margin:0;
  padding:.5rem .75rem;
  background: rgba(var(--surface-rgb), .65);
  border: 1px solid rgba(255,255,255,.20);
  backdrop-filter: blur(8px) saturate(1.05);
  -webkit-backdrop-filter: blur(8px) saturate(1.05);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.crumbs-bar .breadcrumb{
  background: transparent;
  padding: 0;
  margin: 0;
}

.crumbs-bar .breadcrumb-item a{
  color: var(--accent);
  text-decoration: none;
}

.crumbs-bar .breadcrumb-item a:hover{
  color: var(--accent-hover);
  text-decoration: underline;
}

.crumbs-bar .breadcrumb-item + .breadcrumb-item::before{
  color: var(--muted);
  opacity: .85;
}

.crumbs-bar .breadcrumb-item.active{
  color: var(--text);
  font-weight: 600;
}

html.theme-dark .crumbs-bar{
  background: rgba(var(--surface-rgb), .55);
  border-color: rgba(255,255,255,.14);
}


/* =========================================================
   BOOK VIEW (light/dark, glass)
   ========================================================= */

.book-hero .book-cover img{
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.book-hero .book-meta{
  gap: .5rem .75rem;
  margin-top: .5rem;
}

.book-hero .meta-chip{
  display: inline-flex;
  align-items: center;
  background: rgba(var(--surface-rgb), .65);
  border: 1px solid rgba(255,255,255,.2);
  backdrop-filter: blur(8px) saturate(1.05);
  -webkit-backdrop-filter: blur(8px) saturate(1.05);
  border-radius: 10px;
  padding: .35rem .5rem;
  font-size: .9rem;
}

html.theme-dark .book-hero .meta-chip{
  background: rgba(var(--surface-rgb), .55);
  border-color: rgba(255,255,255,.14);
}

.book-hero .meta-chip .label{
  color: var(--muted);
  margin-right: .4rem;
}

.book-hero .meta-chip.views{
  border-color: rgba(0,227,248,.25);
}

.book-desc,
.book-toc{
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
}

.book-toc h1,
.book-toc h2,
.book-toc h3{
  margin-top: 1rem;
}

.separator{
  opacity:.6;
  margin: 0 .25rem;
}

/* =========================================================
   USER AVATAR IN NAVBAR
   Аватар пользователя в верхнем меню
   ========================================================= */

.bt-user-pill {
    display: inline-flex;
    align-items: center;
    gap: 9px;
}

.bt-user-avatar-img,
.bt-user-avatar-fallback {
    flex: 0 0 auto;
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    color: var(--bg);
    background: var(--accent);
    border: 1px solid rgba(103, 232, 249, .45);
    font-size: 13px;
    font-weight: 950;
    line-height: 1;
    text-transform: uppercase;
}

.bt-user-avatar-img {
    object-fit: cover;
    background: rgba(var(--surface-rgb), .60);
}

.bt-user-name {
    display: inline-flex;
    align-items: center;
    min-width: 0;
}

.bt-user-pill:hover .bt-user-avatar-img,
.bt-user-pill:hover .bt-user-avatar-fallback,
.bt-user-pill:focus .bt-user-avatar-img,
.bt-user-pill:focus .bt-user-avatar-fallback {
    border-color: var(--accent);
    box-shadow: 0 0 16px rgba(103, 232, 249, .35);
}

html.theme-dark .bt-user-avatar-img,
body.theme-dark .bt-user-avatar-img {
    background: rgba(255, 255, 255, .06);
}

.bt-user-avatar-img,
.bt-user-avatar-fallback {
    border-radius: 50% !important;
}

@media (max-width: 575.98px) {
    .bt-user-avatar-img,
    .bt-user-avatar-fallback {
        width: 30px;
        height: 30px;
    }

    .bt-user-name {
        max-width: 120px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
}