body {
  background-color: #EAEAEA;
  color: #000000;
  min-height: 100vh;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}
.hero { min-height: 100vh; }
.brand { font-weight: 700; color: #000000; letter-spacing: .5px; }
.brand-logo { height: 48px; width: auto; object-fit: contain; }

.search-wrap { width: 100%; max-width: 680px; }
.search-group {
  border-radius: 16px;
  overflow: hidden;
  background-color: #FFFFFF;
}
.search-group .form-control {
  border: none;
  box-shadow: none;
}
.search-group .input-group-text {
  border: none;
}
.search-group .btn-light {
  border-color: #EAEAEA !important;
  background-color: #FFFFFF;
}
.search-group .btn-light:hover {
  background-color: #F8F9FA;
}

/* Оранжевая кнопка */
.btn-orange {
  background-color: #FFA000 !important;
  border-color: #FFA000 !important;
  color: #FFFFFF !important;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}
.btn-orange:hover, .btn-orange:active, .btn-orange:focus {
  background-color: #E68F00 !important;
  border-color: #E68F00 !important;
  color: #FFFFFF !important;
}

/* Кастомизация скачивания */
.btn-outline-orange {
  color: #FFA000;
  border-color: #FFA000;
  background-color: transparent;
  transition: all 0.2s ease;
}
.btn-outline-orange:hover, .btn-outline-orange:active {
  background-color: #FFA000;
  color: #FFFFFF;
  border-color: #FFA000;
}

.result-wrap { width: 100%; max-width: 760px; }
.answer-card {
  border: none;
  border-radius: 16px;
  background-color: #FFFFFF;
  color: #000000;
}
.source-item {
  border-radius: 12px;
  background-color: #FFFFFF !important;
  border: 1px solid #EAEAEA;
}
.spinner-border { width: 1.2rem; height: 1.2rem; }

/* Адаптивность для мобильных устройств */
@media (max-width: 576px) {
  .brand-logo { height: 38px; }
  .brand { font-size: 1.75rem; }
  .search-group {
    flex-direction: column;
    background: transparent;
    box-shadow: none !important;
  }
  .search-group > * {
    width: 100% !important;
    border-radius: 12px !important;
    margin-bottom: 8px;
    border: 1px solid #D9D9D9 !important;
  }
  .search-group .input-group-text {
    display: none; /* Скрываем лупу на мобилке для экономии места */
  }
  .search-group #question {
    padding: 14px 16px !important;
  }
  .search-group #uploadBtn {
    background-color: #FFFFFF;
    padding: 12px !important;
  }
  .search-group .btn-orange {
    margin-bottom: 0;
    padding: 14px !important;
  }
  .answer-card {
    padding: 20px !important;
    font-size: 0.95rem;
  }
  .source-item {
    padding: 12px !important;
  }
  .source-item .btn-sm {
    padding: 4px 10px !important;
    font-size: 0.75rem;
  }
}