/* ========== ПОЛНЫЕ СТИЛИ ПЛАТФОРМЫ (ВКЛЮЧАЯ ФУТЕР И КОМПОНЕНТЫ) ========== */

/* Переменные (дополнение к :root из HEAD) */
@media (prefers-color-scheme: dark) {
  :root {
    --app-bg: #0B1120;
    --app-bg-rgb: 11, 17, 32;
    --app-card: #1E293B;
    --app-card-hover: #334155;
    --app-border: #334155;
    --app-text: #F8FAFC;
    --app-text-muted: #94A3B8;
    --app-primary: #5BA3D0;
    --app-primary-dark: #4A8FB8;
    --app-primary-light: #1E3A4D;
    --app-success-bg: #064E3B;
    --app-warning-bg: #78350F;
    --app-danger-bg: #7F1D1D;
  }
}
html.dark {
  --app-bg: #0B1120;
  --app-bg-rgb: 11, 17, 32;
  --app-card: #1E293B;
  --app-card-hover: #334155;
  --app-border: #334155;
  --app-text: #F8FAFC;
  --app-text-muted: #94A3B8;
  --app-primary: #5BA3D0;
  --app-primary-dark: #4A8FB8;
  --app-primary-light: #1E3A4D;
  --app-success-bg: #064E3B;
  --app-warning-bg: #78350F;
  --app-danger-bg: #7F1D1D;
}

/* Базовые стили (дополнение) */
body {
  font-weight: 500;
  overflow-x: hidden;
}
a { color: var(--app-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- ПЛАТФОРМЕННЫЙ ХЕДЕР ---------- */
.platform-header {
  position: sticky;
  top: 0;
  z-index: 1002;
  background: rgba(var(--app-bg-rgb), 0.85);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  border-bottom: 1px solid var(--app-border);
}
.platform-header-inner {
  max-width: var(--platform-max-width);
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.platform-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.platform-logo-badge {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--app-primary) 0%, var(--app-accent) 100%);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 800; font-size: 18px;
  box-shadow: 0 4px 8px rgba(5,83,151,0.2);
}
.platform-logo-text {
  height: 36px;
  background: linear-gradient(135deg, var(--app-primary) 0%, var(--app-accent) 100%);
  border-radius: 10px;
  padding: 0 16px;
  display: flex; align-items: center;
  color: white; font-weight: 700; font-size: 14px;
  letter-spacing: 1px;
  box-shadow: 0 4px 8px rgba(5,83,151,0.2);
}
.platform-nav { display: flex; gap: 8px; }
.platform-nav-btn {
  padding: 8px 18px;
  background: transparent;
  color: var(--app-text-muted);
  border-radius: 40px;
  font-size: 13px; font-weight: 600;
  text-decoration: none;
  transition: var(--app-transition);
  border: 1px solid transparent;
}
.platform-nav-btn:hover {
  background: var(--app-primary);
  color: white;
  border-color: var(--app-primary-dark);
}
.platform-actions { display: flex; gap: 6px; align-items: center; }
.platform-action-btn {
  width: 40px; height: 40px;
  border-radius: 40px;
  border: 1px solid var(--app-border);
  background: transparent;
  color: var(--app-text);
  font-size: 18px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: var(--app-transition);
}
.platform-action-btn:hover {
  background: var(--app-primary-light);
  border-color: var(--app-primary);
  color: var(--app-primary);
}
.platform-action-btn.disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}
#ys-lang-slot { display: inline-block; margin-right: 10px; }

/* ---------- ПЛАТФОРМЕННЫЙ ФУТЕР ---------- */
.platform-footer {
  background: var(--app-card);
  border-top: 2px solid var(--app-primary);
  padding: 40px 24px 20px;
  margin-top: 60px;
}
.platform-footer-inner {
  max-width: var(--platform-max-width);
  margin: 0 auto;
}
.platform-footer-flag { margin-bottom: 20px; }
.platform-footer-flag-stripes {
  display: flex;
  height: 6px;
  border-radius: 3px;
  overflow: hidden;
}
.platform-footer-flag-stripe.white { background: #FFFFFF; flex: 1; }
.platform-footer-flag-stripe.blue { background: #0039A6; flex: 1; }
.platform-footer-flag-stripe.red { background: #D52B1E; flex: 1; }
.platform-footer-content { padding: 20px 0; }
.platform-footer-block {
  padding: 20px 0;
  border-bottom: 1px solid var(--app-border);
}
.platform-footer-block:last-child { border-bottom: none; }
.platform-footer-brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}
.platform-footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.platform-footer-logo-badge {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--app-primary) 0%, var(--app-accent) 100%);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 800; font-size: 18px;
}
.platform-footer-logo-text {
  height: 36px;
  background: linear-gradient(135deg, var(--app-primary) 0%, var(--app-accent) 100%);
  border-radius: 10px;
  padding: 0 16px;
  display: flex; align-items: center;
  color: white; font-weight: 700; font-size: 14px;
  letter-spacing: 1px;
}
.platform-footer-logo-text-group {
  display: flex;
  flex-direction: column;
  margin-left: 8px;
}
.platform-footer-logo-main { font-size: 13px; font-weight: 600; color: var(--app-text); }
.platform-footer-logo-sub { font-size: 11px; color: var(--app-primary); }
.platform-footer-support-grid {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.platform-footer-support-group {
  display: flex;
  align-items: center;
  gap: 12px;
}
.platform-footer-support-label {
  font-size: 11px; font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--app-primary);
  background: var(--app-primary-light);
  padding: 6px 12px;
  border-radius: 40px;
}
.platform-footer-support-orgs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.platform-footer-support-org-btn {
  padding: 8px 16px;
  background: var(--app-card);
  border: 1px solid var(--app-border);
  border-radius: 40px;
  font-size: 12px; font-weight: 500;
  color: var(--app-text-muted);
  text-decoration: none;
  transition: var(--app-transition);
}
.platform-footer-support-org-btn:hover {
  background: var(--app-primary-light);
  border-color: var(--app-primary);
  color: var(--app-primary);
}
.platform-footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.platform-footer-section-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  cursor: pointer;
}
.platform-footer-section-icon { font-size: 20px; }
.platform-footer-section h3 {
  font-size: 14px; font-weight: 700;
  color: var(--app-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.platform-footer-section-header::after {
  content: "▼";
  font-size: 12px;
  color: var(--app-text-muted);
  margin-left: auto;
  transition: transform 0.2s;
}
.platform-footer-section.collapsed .platform-footer-section-header::after {
  transform: rotate(-90deg);
}
.platform-footer-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.platform-footer-section.collapsed .platform-footer-list {
  display: none;
}
.platform-footer-item {
  font-size: 13px;
  color: var(--app-text-muted);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 1px dashed transparent;
  transition: var(--app-transition);
}
.platform-footer-item:hover {
  color: var(--app-primary);
  border-bottom-color: var(--app-primary-light);
}
.platform-footer-item.inactive {
  color: var(--app-text-light);
  cursor: default;
}
.platform-footer-contacts-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}
.platform-footer-cmn-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}
.platform-footer-cmn-logo-badges {
  display: flex;
  align-items: center;
  gap: 10px;
}
.platform-footer-cmn-logo-mn {
  width: 40px; height: 40px;
  background: #2F4D99;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 800; font-size: 16px;
}
.platform-footer-cmn-logo-text {
  display: flex;
  flex-direction: column;
}
.platform-footer-cmn-logo-main {
  font-size: 13px; font-weight: 600;
  color: #2F4D99;
}
.platform-footer-cmn-logo-sub {
  font-size: 11px;
  color: var(--app-text-muted);
}
.platform-footer-cmn-operator-badge {
  font-size: 11px; font-weight: 600;
  color: #2F4D99;
  background: rgba(47,77,153,0.1);
  padding: 6px 12px;
  border-radius: 40px;
}
.platform-footer-contacts {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.platform-footer-contact-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--app-primary-light);
  border: 1px solid var(--app-border);
  border-radius: 40px;
  font-size: 12px; font-weight: 600;
  color: var(--app-primary);
  text-decoration: none;
  cursor: pointer;
  transition: var(--app-transition);
}
.platform-footer-contact-btn:hover {
  background: var(--app-primary);
  color: white;
  border-color: var(--app-primary);
}
.platform-footer-contact-icon {
  width: 20px; height: 20px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 6px;
  font-size: 14px;
}
.platform-footer-contact-icon.email { background: var(--app-primary); color: white; }
.platform-footer-contact-icon.vk { background: #0077FF; color: white; }
.platform-footer-contact-icon.tg { background: #229ED9; color: white; }
.platform-footer-contact-icon.max { background: #8F47D3; color: white; }
.platform-footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--app-border);
  font-size: 12px;
  color: var(--app-text-muted);
}
.platform-footer-copyright #year { color: var(--app-primary); font-weight: 700; }
.platform-footer-copyright #niit-accent { color: var(--app-accent); font-weight: 700; }
.platform-footer-developer a { color: var(--app-text-muted); }
.platform-footer-developer a:hover { color: var(--app-primary); }

/* ---------- ПЛАВАЮЩАЯ НАВИГАЦИЯ (МОБИЛЬНАЯ) ---------- */
.platform-floating-nav {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--app-card);
  border: 1px solid var(--app-border);
  border-radius: 60px;
  padding: 8px 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
  z-index: 9998;
  display: none;
  gap: 4px;
  backdrop-filter: blur(8px);
}
.platform-floating-nav-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 12px;
  border-radius: 40px;
  background: transparent;
  border: none;
  text-decoration: none;
  color: var(--app-text-muted);
  transition: var(--app-transition);
  min-width: 60px;
}
.platform-floating-nav-btn:hover,
.platform-floating-nav-btn.active {
  background: var(--app-primary-light);
  color: var(--app-primary);
}
.platform-floating-nav-icon { font-size: 20px; }
.platform-floating-nav-label { font-size: 10px; font-weight: 600; }

/* ---------- КОМПОНЕНТЫ (КНОПКИ, КАРТОЧКИ, ФОРМЫ, ТОСТЫ, ЛОАДЕР) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 40px;
  border: 1px solid var(--app-border);
  background: var(--app-card);
  color: var(--app-text);
  cursor: pointer;
  transition: var(--app-transition);
}
.btn:hover:not(:disabled) {
  background: var(--app-card-hover);
  transform: translateY(-1px);
}
.btn-primary {
  background: var(--app-primary);
  border-color: var(--app-primary);
  color: white;
}
.btn-primary:hover:not(:disabled) {
  background: var(--app-primary-dark);
}
.btn-success {
  background: var(--app-success);
  border-color: var(--app-success);
  color: white;
}
.btn-warning {
  background: var(--app-warning);
  border-color: var(--app-warning);
  color: white;
}
.btn-danger {
  background: var(--app-danger);
  border-color: var(--app-danger);
  color: white;
}
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-lg { padding: 12px 28px; font-size: 16px; }
.btn-icon { padding: 8px; border-radius: 40px; }

.card {
  background: var(--app-card);
  border: 1px solid var(--app-border);
  border-radius: 20px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
  transition: var(--app-transition);
  overflow: hidden;
}
.card:hover { box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1); }
.card-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--app-border);
  background: rgba(var(--app-bg-rgb), 0.5);
  font-weight: 700;
}
.card-body { padding: 24px; }
.card-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--app-border);
  background: rgba(var(--app-bg-rgb), 0.3);
}

.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  margin-bottom: 4px;
  font-weight: 600;
  font-size: 13px;
  color: var(--app-text-muted);
}
.form-control {
  width: 100%;
  padding: 10px 14px;
  font-size: 14px;
  font-family: inherit;
  background: var(--app-bg);
  border: 1px solid var(--app-border);
  border-radius: 12px;
  color: var(--app-text);
  transition: var(--app-transition);
}
.form-control:focus {
  outline: none;
  border-color: var(--app-primary);
  box-shadow: 0 0 0 3px rgba(5,83,151,0.2);
}
textarea.form-control { resize: vertical; min-height: 80px; }
select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%234B5563' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}
.checkbox-group, .radio-group {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.checkbox-group input, .radio-group input { width: 18px; height: 18px; }

.table {
  width: 100%;
  border-collapse: collapse;
}
.table th, .table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--app-border);
}
.table th {
  font-weight: 700;
  color: var(--app-text-muted);
  background: rgba(var(--app-bg-rgb), 0.5);
}
.table tr:hover td { background: var(--app-card-hover); }

.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.toast {
  background: var(--app-card);
  border-left: 4px solid var(--app-primary);
  border-radius: 12px;
  box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
  padding: 12px 20px;
  min-width: 280px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  animation: slideIn 0.3s ease;
}
.toast-success { border-left-color: var(--app-success); }
.toast-error { border-left-color: var(--app-danger); }
.toast-message { flex: 1; font-size: 14px; }
.toast-close {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--app-text-muted);
}
@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}
.loader {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--app-border);
  border-top-color: var(--app-primary);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Адаптив */
@media (max-width: 768px) {
  .platform-header-inner { padding: 8px 16px; }
  .platform-nav { display: none; }
  .platform-floating-nav { display: flex; }
  .card-body { padding: 16px; }
  .table th, .table td { padding: 8px 12px; }
  .toast-container { left: 16px; right: 16px; bottom: 16px; }
  .toast { min-width: auto; width: 100%; }
  .platform-footer-brand-row { flex-direction: column; align-items: flex-start; }
  .platform-footer-support-grid { flex-direction: column; gap: 16px; }
  .platform-footer-links { grid-template-columns: 1fr; }
  .platform-footer-section-header { margin-bottom: 8px; }
  .platform-footer-contacts-row { flex-direction: column; align-items: stretch; }
  .platform-footer-cmn-brand { flex-wrap: wrap; }
  .platform-footer-contacts { justify-content: center; }
  .platform-footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .btn { padding: 8px 16px; font-size: 13px; }
  .form-control { padding: 8px 12px; }
}