/* ============================================================
   IESA LAYOUT CSS - Сетка, навигация, футер
   Версия: 2.0
   
   Содержит:
   - Контейнеры
   - Header/Navbar
   - Footer
   - Main content area
   ============================================================ */

/* ====================================================
   1. КОНТЕЙНЕРЫ
   ==================================================== */

.container-limited {
  width: 100%;
  max-width: var(--container-limited);
  margin-left: auto;
  margin-right: auto;
  padding-left: max(var(--space-4), env(safe-area-inset-left));
  padding-right: max(var(--space-4), env(safe-area-inset-right));
}

@media (max-width: 575.98px) {
  .container-limited {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }
}

@media (min-width: 768px) {
  .container-limited {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

/* Контейнер для профиля (шире) */
.container-profile {
  max-width: 1400px;
}

/* ====================================================
   2. HEADER / NAVBAR
   ==================================================== */

.dev-banner {
  background: rgba(8,8,14,0.97);
  color: rgba(255,255,255,.55);
  padding: 6px 48px 6px 20px;
  text-align: center;
  font-size: .75rem;
  font-weight: 500;
  position: relative;
  z-index: calc(var(--z-fixed) + 1);
  letter-spacing: .02em;
  border-bottom: 1px solid rgba(220,38,38,.25);
}
.dev-banner strong { color: rgba(248,113,113,.9); }
.dev-banner-close {
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  background: none; border: none; color: rgba(255,255,255,.3);
  font-size: 1rem; line-height: 1; cursor: pointer; padding: 2px 4px;
  transition: color .2s; border-radius: 4px;
}
.dev-banner-close:hover { color: rgba(255,255,255,.8); background: rgba(255,255,255,.06); }

header, .iesa-header {
  background: rgba(8,8,14,0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,.06);
  position: sticky;
  top: 0;
  z-index: var(--z-fixed);
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  isolation: isolate;
  transition: background .3s;
}

/* Navbar Brand (Logo) */
.navbar-brand {
  display: flex;
  align-items: center;
  font-weight: var(--font-bold);
  color: var(--text-primary);
  transition: transform var(--transition-fast);
}

.navbar-brand img {
  height: 34px;
  margin-right: var(--space-2);
  vertical-align: middle;
  transition: transform var(--transition-smooth);
}

@media (hover: hover) and (pointer: fine) {
  .navbar-brand:hover {
    color: var(--text-primary);
    transform: translateX(2px);
  }

  .navbar-brand:hover img {
    transform: scale(1.05);
  }
}

/* Nav Links — dark navbar */
.navbar-nav .nav-link {
  color: rgba(255,255,255,.65);
  font-weight: var(--font-medium);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  position: relative;
  font-size: .9rem;
  letter-spacing: .01em;
}

.navbar-nav .nav-link::after {
  display: none;
}

@media (hover: hover) and (pointer: fine) {
  .navbar-nav .nav-link:hover {
    color: #fff;
    background: rgba(255,255,255,.07);
  }
}

.navbar-nav .nav-link.active {
  color: #f87171;
  font-weight: var(--font-semibold);
  background: rgba(220,38,38,.1);
}

/* Navbar brand — light logo on dark */
.navbar-brand {
  color: #fff !important;
}
.navbar-brand:hover {
  color: #fff !important;
}

/* Dropdown — dark */
.dropdown-menu {
  background: #0f0f1a;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-xl);
  box-shadow: 0 16px 48px rgba(0,0,0,.6);
  padding: var(--space-2);
  min-width: 200px;
  z-index: 50;
}

.dropdown-item {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  color: rgba(255,255,255,.65);
  font-weight: var(--font-medium);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  font-size: .875rem;
}

.dropdown-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 3px;
  background: var(--primary);
  transform: scaleY(0);
  transition: transform var(--transition-smooth);
}

.dropdown-item:hover {
  background: rgba(220,38,38,.1);
  color: #fff;
  transform: translateX(4px);
}

.dropdown-item:hover::before {
  transform: scaleY(1);
}

.dropdown-item:focus {
  background: rgba(220,38,38,.08);
  color: #fff;
}

.dropdown-divider {
  border-color: rgba(255,255,255,.08);
  margin: var(--space-2) 0;
}

.dropdown-header {
  color: rgba(255,255,255,.35) !important;
  font-size: .7rem !important;
  letter-spacing: .08em;
  text-transform: uppercase;
}

/* Navbar Toggler — dark */
.navbar-toggler {
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  color: rgba(255,255,255,.7);
}

.navbar-toggler-icon {
  filter: invert(1) brightness(2);
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 2px rgba(220,38,38,.35);
  border-color: rgba(220,38,38,.4);
}

/* ─── Navbar dark action buttons ─── */
.btn-nav-icon {
  width: 38px; height: 38px;
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.1);
  color: rgba(255,255,255,.65); border-radius: 10px;
  transition: background .2s, color .2s, border-color .2s; padding: 0;
  font-size: .9rem; flex-shrink: 0;
}
.btn-nav-icon:hover, .btn-nav-icon:focus {
  background: rgba(255,255,255,.13); color: #fff;
  border-color: rgba(255,255,255,.22);
}
.btn-nav-icon.position-relative { display: inline-flex !important; }

.btn-nav-profile {
  display: inline-flex; align-items: center; gap: .5rem;
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.1);
  color: rgba(255,255,255,.8); border-radius: 10px;
  padding: .38rem .9rem; font-size: .88rem; font-weight: 600;
  transition: background .2s, border-color .2s, color .2s;
  text-decoration: none;
}
.btn-nav-profile:hover {
  background: rgba(255,255,255,.13); border-color: rgba(255,255,255,.22); color: #fff;
}

.btn-nav-outline {
  display: inline-flex; align-items: center; gap: .4rem;
  background: transparent; border: 1px solid rgba(255,255,255,.2);
  color: rgba(255,255,255,.7); border-radius: 10px;
  padding: .38rem .9rem; font-size: .88rem; font-weight: 600;
  transition: background .2s, border-color .2s, color .2s;
  text-decoration: none; cursor: pointer;
}
.btn-nav-outline:hover {
  background: rgba(255,255,255,.07); border-color: rgba(255,255,255,.38); color: #fff;
}

/* ====================================================
   3. MAIN CONTENT
   ==================================================== */

main {
  flex: 1;
  position: relative;
  z-index: 1;
}

/* Default padding for pages that use container-limited wrap */
.container-limited-main-pad {
  padding-top: 2.5rem;
  padding-bottom: 4rem;
}

/* ====================================================
   4. FOOTER
   ==================================================== */

.footer-enhanced {
  background: var(--bg-dark);
  color: var(--gray-300);
  margin-top: auto;
}

.footer-title {
  color: var(--white);
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  margin-bottom: var(--space-4);
}

.footer-text {
  color: var(--gray-400);
  font-size: var(--text-sm);
}

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

.footer-links li {
  margin-bottom: var(--space-2);
}

.footer-links a {
  color: var(--gray-400);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
  display: inline-flex;
  align-items: center;
}

.footer-links a:hover {
  color: var(--white);
}

/* Footer Social Icons */
.footer-social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  color: var(--gray-400);
  font-size: var(--text-lg);
  transition: all var(--transition-fast);
}

.footer-social:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

/* ====================================================
   5. BACK TO TOP BUTTON
   ==================================================== */

#back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: var(--white);
  border: none;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-smooth);
  box-shadow: var(--shadow-primary);
  z-index: var(--z-back-to-top);
}

#back-to-top:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-primary-lg);
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ====================================================
   6. NAV PILLS (вкладки навигации)
   ==================================================== */

.nav-pills {
  gap: var(--space-2);
}

.nav-pills .nav-link {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-weight: var(--font-medium);
  background: transparent;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.nav-pills .nav-link:hover {
  background: var(--gray-100);
  color: var(--text-primary);
}

.nav-pills .nav-link.active {
  background: var(--primary);
  color: var(--white);
  font-weight: var(--font-semibold);
}

/* ====================================================
   7. SECTION TITLE (заголовки секций)
   ==================================================== */

.section-title {
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.section-title::before,
.section-title::after {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: var(--radius-full);
}

/* ====================================================
   8. PAGE HEADER (заголовок страницы)
   ==================================================== */

.page-header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.page-header h1 {
  margin-bottom: var(--space-3);
}

.page-header p {
  color: var(--text-muted);
  font-size: var(--text-lg);
  max-width: 600px;
  margin: 0 auto;
}

/* ====================================================
   9. MODALS (улучшения Bootstrap модалок)
   ==================================================== */

.modal-content {
  border: none;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
}

.modal-header {
  border-bottom: 1px solid var(--border-color);
  padding: var(--space-5) var(--space-6);
}

.modal-title {
  font-weight: var(--font-bold);
  font-size: var(--text-lg);
}

.modal-body {
  padding: var(--space-6);
}

.modal-footer {
  border-top: 1px solid var(--border-color);
  padding: var(--space-4) var(--space-6);
}

/* Modal backdrop */
.modal-backdrop.show {
  opacity: 0.5;
}

/* ====================================================
   10. PAGINATION
   ==================================================== */

.pagination {
  gap: var(--space-1);
}

.page-item .page-link {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-weight: var(--font-medium);
  padding: var(--space-2) var(--space-4);
  transition: all var(--transition-fast);
}

.page-item .page-link:hover {
  background: var(--gray-100);
  border-color: var(--border-color-hover);
  color: var(--text-primary);
}

.page-item.active .page-link {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}

.page-item.disabled .page-link {
  background: var(--gray-50);
  color: var(--text-light);
}

/* ====================================================
   10. NAVBAR SPECIFIC ELEMENTS
   ==================================================== */

/* Navbar Logo */
.navbar-logo {
  height: 34px;
  margin-right: 10px;
  vertical-align: middle;
}

/* Navbar Buttons */
.navbar-btn {
  padding: 0.4rem 0.75rem;
  font-size: 0.9rem;
}

/* Header Avatar - Keep compact */
.navbar-btn .avatar {
  width: 26px !important;
  height: 26px !important;
}

.navbar-btn .avatar-fallback {
  font-size: 0.7rem !important;
}

/* Navbar Search Dropdown */
.navbar-search-dropdown {
  min-width: 360px;
  background: #111118 !important;
  border: 1.5px solid rgba(255,255,255,.1) !important;
  border-radius: 16px !important;
  box-shadow: 0 24px 64px rgba(0,0,0,.55) !important;
  padding: 1rem !important;
}
.navbar-search-dropdown .form-label { color: rgba(255,255,255,.55); }
.navbar-search-dropdown .form-control {
  background: rgba(255,255,255,.07) !important;
  border: 1.5px solid rgba(255,255,255,.1) !important;
  color: #fff !important;
  border-radius: 10px !important;
}
.navbar-search-dropdown .form-control::placeholder { color: rgba(255,255,255,.3) !important; }
.navbar-search-dropdown .form-control:focus {
  background: rgba(255,255,255,.1) !important;
  border-color: rgba(220,38,38,.4) !important;
  box-shadow: 0 0 0 3px rgba(220,38,38,.12) !important;
}
/* Search results inside the navbar dropdown */
.navbar-search-results .search-section { margin-bottom: .75rem; }
.navbar-search-results .section-title {
  font-size: .68rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: rgba(220,38,38,.9);
  display: flex; align-items: center; gap: .4rem;
  margin-bottom: .4rem;
}
.navbar-search-results .section-title i { color: inherit; }
.navbar-search-results .section-title::before,
.navbar-search-results .section-title::after { content: none; }
.navbar-search-results .list-group { gap: 2px; display: flex; flex-direction: column; }
.navbar-search-results .search-item {
  background: rgba(255,255,255,.04) !important;
  border: 1px solid rgba(255,255,255,.07) !important;
  border-radius: 10px !important;
  color: rgba(255,255,255,.85) !important;
  padding: .55rem .75rem !important;
  transition: background .15s !important;
}
.navbar-search-results .search-item:hover {
  background: rgba(255,255,255,.09) !important;
  border-color: rgba(220,38,38,.25) !important;
  color: #fff !important;
}
.navbar-search-results .text-dark  { color: rgba(255,255,255,.9) !important; }
.navbar-search-results .text-muted  { color: rgba(255,255,255,.38) !important; }
.navbar-search-results h6 { color: rgba(255,255,255,.92) !important; }
.navbar-search-results .fa-chevron-right { color: rgba(255,255,255,.2) !important; }
.navbar-search-results .rounded-circle.bg-primary {
  background: rgba(220,38,38,.25) !important;
  border: 1.5px solid rgba(220,38,38,.35) !important;
  color: #f87171 !important;
}
.navbar-search-results .search-results > .text-center {
  color: rgba(255,255,255,.35) !important;
}
.navbar-search-results .search-results > .text-center h5 { color: rgba(255,255,255,.6) !important; }

.notifications-dropdown {
  min-width: 320px;
  max-height: 400px;
  overflow-y: auto;
}

/* ── Custom Language Picker ─────────────────────────────── */
.lang-picker-wrap { position: relative; }
.btn-lang-pick {
  display: flex; align-items: center; gap: .5rem;
  background: rgba(255,255,255,.07);
  border: 1.5px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.7);
  border-radius: 10px;
  padding: .38rem .85rem;
  font-size: .82rem; font-weight: 600;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
  white-space: nowrap;
  height: 38px; line-height: 1;
}
.btn-lang-pick:hover { background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.2); color: #fff; }
.lang-pick-arrow { flex-shrink: 0; transition: transform .2s; }
.btn-lang-pick[aria-expanded="true"] .lang-pick-arrow { transform: rotate(180deg); }
.lang-pick-dropdown {
  position: absolute; top: calc(100% + 8px); right: 0;
  background: #111118;
  border: 1.5px solid rgba(255,255,255,.1);
  border-radius: 14px; padding: .4rem;
  min-width: 158px; z-index: 9999;
  opacity: 0; transform: translateY(-8px); pointer-events: none;
  transition: opacity .18s, transform .18s;
  box-shadow: 0 16px 44px rgba(0,0,0,.55);
}
.lang-pick-dropdown.lp-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
.lang-pick-item {
  display: block; width: 100%; background: none; border: none;
  padding: .55rem 1rem; border-radius: 9px;
  color: rgba(255,255,255,.65); font-size: .88rem; font-weight: 500;
  text-align: left; cursor: pointer;
  transition: background .12s, color .12s;
}
.lang-pick-item:hover { background: rgba(255,255,255,.07); color: #fff; }
.lang-pick-item.lp-active { background: rgba(220,38,38,.15); color: #f87171; font-weight: 700; }

/* ── Global Dark Modals ─────────────────────────────────── */
.modal-content {
  background: #111118;
  border: 1.5px solid rgba(255,255,255,.1);
  border-radius: 18px;
  color: #e2e8f0;
}
.modal-header {
  background: transparent;
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.modal-footer { border-top: 1px solid rgba(255,255,255,.07); }
/* Light modal variant — override dark defaults */
.modal-light .modal-content {
  background: #fff;
  border: 1px solid rgba(0,0,0,.1);
  color: var(--gray-900);
}
.modal-light .modal-header { border-bottom: 1px solid rgba(0,0,0,.1); }
.modal-light .modal-footer { border-top: 1px solid rgba(0,0,0,.1); }
.modal .btn-close { filter: invert(1) brightness(2); }
.modal-light .btn-close { filter: none; }
.modal-body { color: var(--text-secondary); }

/* Fix: search button positioning on mobile */
@media (max-width: 991px) {
  .navbar-collapse .d-flex.align-items-center {
    margin-top: 1rem;
  }
}

@media (max-width: 576px) {
  .navbar-brand img {
    height: 32px;
  }
}

@media (max-width: 991.98px) {
  .lang-picker-wrap { width: 100%; }
  .btn-lang-pick { width: 100%; justify-content: space-between; }
  .lang-pick-dropdown { left: 0; right: 0; min-width: 0; }
  .dev-banner {
    padding: 10px 12px;
    font-size: 0.85rem;
    line-height: 1.35;
  }
}

/* Navbar Notification Badge */
.navbar-notification-badge {
  font-size: 0.65rem;
}

/* Messaging Button Styles */
.messaging-btn {
  position: relative;
  transition: all 0.2s ease;
}

.messaging-btn:hover {
  transform: scale(1.1);
  background-color: #ede9fe !important;
}

.messaging-btn.active {
  background-color: #667eea;
  color: white;
}

.messaging-btn.active i {
  color: white;
}

/* ====================================================
   11. FOOTER SPECIFIC ELEMENTS
   ==================================================== */

/* Footer About Text */
.footer-about-text {
  line-height: 1.7;
  max-width: 360px;
}

/* Footer Copyright */
.footer-copyright {
  opacity: 0.7;
}

/* Footer Link Icons */
.footer-link-icon {
  opacity: 0.6;
  font-size: 0.875rem;
}

/* Footer Contact Icons */
.footer-contact-icon {
  opacity: 0.6;
}

/* ====================================================
   12. MOBILE SAFE-AREA + BODY OVERFLOW
   ==================================================== */

/* Предотвращаем горизонтальный скролл на всём сайте */
body {
  overflow-x: hidden;
}

/* header фиксированная высота не перекрывает контент */
@media (max-width: 767.98px) {
  /* Navbar collapse не вызывает горизонтальный скролл */
  #navbarNav {
    overflow-x: hidden;
  }

  /* Notifications / search dropdown не вылезают за экран */
  .notifications-dropdown,
  .navbar-search-dropdown {
    max-width: calc(100vw - 1rem) !important;
    right: 0 !important;
    left: auto !important;
  }

  /* Сжимаем padding главного блока под bottom nav */
  main#main-content {
    padding-top: 0.5rem !important;
  }
}