/* ===== CSS Переменные ===== */
:root {
  --color-bg: #0f0f14;
  --color-surface: #1a1a24;
  --color-text: #eaeaea;
  --color-text-muted: #999;
  --color-accent: #c084fc;
  --color-accent-hover: #a855f7;
  --color-btn-disabled-bg: #2a2a35;
  --color-btn-disabled-text: #666;
  --color-card-bg: #222230;
  --font-main: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --header-height: 30vh; /* Высота шапки на мобильных */
  --max-width: 1000px;
  --radius: 12px;
}

/* ===== Базовые стили ===== */
body {
  font-family: var(--font-main);
  background-color: var(--color-bg);
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ===== Основной контейнер ===== */
.main {
  width: 100%;
  max-width: var(--max-width);
  padding: 2rem 1rem 4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.main-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-align: center;
  text-transform: uppercase;
  color: var(--color-accent);
}

/* ===== Выбор базы данных ===== */
.db-selector {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.db-selector__btn {
  padding: 0.75rem 1.8rem;
  border: 2px solid var(--color-accent);
  border-radius: var(--radius);
  background: transparent;
  color: var(--color-accent);
  font-weight: 700;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all 0.2s;
  opacity: 0.5;
  position: relative;
}

.db-selector__btn:hover:not(:disabled) {
  opacity: 0.8;
}

.db-selector__btn--active {
  opacity: 1;
  background-color: var(--color-accent);
  color: var(--color-bg);
}

.db-selector__btn--planned::after {
  content: "⚙️";
  margin-left: 0.4em;
  font-size: 0.9em;
  opacity: 0.7;
}

/* ===== Фильтры и кнопка Generate ===== */
.filters {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.filters__group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  justify-content: center;
}

.filters__select {
  padding: 0.65rem 1rem;
  border: 1px solid var(--color-text-muted);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.95rem;
  cursor: pointer;
  transition: opacity 0.2s, border-color 0.2s;
  min-width: 150px;
  opacity: 0.5;
}

.filters__select:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.filters__select:enabled {
  opacity: 1;
  border-color: var(--color-accent);
}

.generate-btn {
  padding: 0.65rem 2rem;
  border: none;
  border-radius: var(--radius);
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
}

.generate-btn:disabled {
  background: var(--color-btn-disabled-bg);
  color: var(--color-btn-disabled-text);
  cursor: not-allowed;
}

.generate-btn:enabled:hover {
  background: var(--color-accent-hover);
}

/* ===== Карточка релиза ===== */
.release-card {
  width: 100%;
  margin-top: 1rem;
}

/* Карточка отображается как блок, скрыт, когда пуст */
.release-card:empty {
  display: none;
}

.card {
  background: var(--color-card-bg);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.card__cover {
  width: 100%;
  max-width: 300px;
  align-self: center;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}

.card__id {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  text-align: center;
  font-family: monospace;
}

.card__field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.card__label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.card__value {
  font-size: 1.1rem;
  word-break: break-word;
}

.card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.card__link {
  background: var(--color-surface);
  padding: 0.4rem 0.9rem;
  border-radius: 2rem;
  font-size: 0.9rem;
  color: var(--color-accent);
  transition: background 0.2s;
}

.card__link:hover {
  background: #33334a;
}

/* ===== Утилиты ===== */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ===== Адаптивность ===== */
@media (min-width: 600px) {
  .main-title {
    font-size: 3.5rem;
  }

  .filters {
    justify-content: space-between;
  }
}

@media (min-width: 900px) {
  :root {
    --header-height: 40vh;
  }

  .card {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-start;
  }

  .card__cover {
    max-width: 250px;
    margin-right: 2rem;
  }

  .card__details {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }
}