/* Главная страница: переключатель разделов и оформление карточек */

/* Примечание: оттенки градиента карточек под светлую и тёмную тему */
:root {
  --home-card-grad-1: rgba(74, 111, 165, 0.14);
  --home-card-grad-2: rgba(212, 196, 176, 0.35);
  --home-card-grad-3: rgba(255, 255, 255, 0.98);
  --home-card-border: rgba(74, 111, 165, 0.22);
  --home-card-accent: linear-gradient(
    90deg,
    var(--color-blue) 0%,
    var(--color-light-blue) 45%,
    var(--color-orange) 100%
  );
  --home-card-shadow: 0 4px 14px rgba(74, 111, 165, 0.1);
  --home-card-shadow-hover: 0 12px 28px rgba(74, 111, 165, 0.18);
}

[data-theme="dark"] {
  --home-card-grad-1: rgba(107, 157, 217, 0.2);
  --home-card-grad-2: rgba(58, 74, 90, 0.95);
  --home-card-grad-3: rgba(69, 90, 110, 0.98);
  --home-card-border: rgba(143, 184, 232, 0.28);
  --home-card-accent: linear-gradient(
    90deg,
    #6b9dd9 0%,
    #8fb8e8 50%,
    #e8b88a 100%
  );
  --home-card-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  --home-card-shadow-hover: 0 14px 32px rgba(0, 0, 0, 0.35);
}

.home-choose-hint {
  margin: 0 0 12px 0;
}

.home-sections-switch {
  display: inline-flex;
  gap: 8px;
  margin: 0 0 22px;
  padding: 6px;
  border-radius: 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  box-shadow: var(--home-card-shadow);
}

.home-switch-btn {
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 10px 16px;
  font-weight: 600;
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.home-switch-btn:hover {
  border-color: var(--border-color-hover);
}

.home-switch-btn--active {
  background: var(--color-blue);
  color: #fff;
  box-shadow: 0 2px 10px rgba(74, 111, 165, 0.35);
}

.home-section {
  display: none;
}

.home-section--active {
  display: block;
  animation: homeSectionIn 0.35s ease;
}

@keyframes homeSectionIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.home-section-header {
  margin-bottom: 18px;
}

/* Сетка карточек на главной */
.home-section .groups-grid {
  gap: 26px;
  margin-bottom: 40px;
}

.home-section .group-card {
  position: relative;
  border-radius: 14px;
  border: 1px solid var(--home-card-border);
  background: linear-gradient(
    155deg,
    var(--home-card-grad-1) 0%,
    var(--home-card-grad-2) 42%,
    var(--home-card-grad-3) 100%
  );
  box-shadow: var(--home-card-shadow);
  overflow: hidden;
  transition:
    transform 0.28s ease,
    box-shadow 0.28s ease,
    border-color 0.28s ease;
}

/* Примечание: лёгкий сдвиг оттенка у соседних карточек */
.home-section .group-card:nth-child(3n + 2) {
  background: linear-gradient(
    155deg,
    var(--home-card-grad-2) 0%,
    var(--home-card-grad-1) 38%,
    var(--home-card-grad-3) 100%
  );
}

.home-section .group-card:nth-child(3n) {
  background: linear-gradient(
    155deg,
    var(--home-card-grad-3) 0%,
    var(--home-card-grad-1) 55%,
    var(--home-card-grad-2) 100%
  );
}

.home-section .group-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--home-card-accent);
  opacity: 0.85;
  z-index: 1;
}

.home-section .group-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-color-hover);
  box-shadow: var(--home-card-shadow-hover);
}

.home-section .group-card-image {
  height: 190px;
  background: linear-gradient(
    180deg,
    var(--home-card-grad-1) 0%,
    var(--home-card-grad-2) 100%
  );
}

.home-section .group-card-content {
  padding: 24px 26px 26px;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(255, 255, 255, 0.04) 100%
  );
}

[data-theme="dark"] .home-section .group-card-content {
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(0, 0, 0, 0.08) 100%
  );
}

.home-section .group-card h2 {
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.home-section .group-card--locked {
  border-style: dashed;
  opacity: 0.92;
}

.home-section .group-card--locked::before {
  opacity: 0.55;
  background: linear-gradient(
    90deg,
    var(--color-light-brown) 0%,
    var(--color-gray) 100%
  );
}

.home-section .group-actions {
  gap: 10px;
}

.home-section .group-actions .btn {
  border-radius: 8px;
}

/* Нижние информационные карточки (только главная подключает этот файл) */
.info-section {
  gap: 26px;
  margin-top: 8px;
}

.info-section .info-card {
  position: relative;
  border-radius: 14px;
  border: 1px solid var(--home-card-border);
  background: linear-gradient(
    145deg,
    var(--home-card-grad-1) 0%,
    var(--home-card-grad-2) 50%,
    var(--home-card-grad-3) 100%
  );
  box-shadow: var(--home-card-shadow);
  padding: 26px 28px;
  overflow: hidden;
  transition:
    transform 0.28s ease,
    box-shadow 0.28s ease,
    border-color 0.28s ease;
}

.info-section .info-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--home-card-accent);
  opacity: 0.75;
}

.info-section .info-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-color-hover);
  box-shadow: var(--home-card-shadow-hover);
}

.info-section .info-card h3 {
  color: var(--color-blue);
  margin-bottom: 12px;
}

@media (max-width: 768px) {
  .home-section .groups-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .home-section .group-card-content {
    padding: 20px 18px 22px;
  }
}