/**
 * features.css
 * БЭМ-блок: features
 * Секция преимуществ с grid-сеткой
 */

/* ===========================
   Block: features
   =========================== */

.features {
  padding: var(--spacing-2xl) 0;
  background-color: var(--color-bg);
}

.features_alt {
  background-color: var(--color-bg-alt);
}

.features__header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.features__title {
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.features__subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ===========================
   Element: list (grid container)
   =========================== */

.features__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

/* ===========================
   Element: item (feature card)
   =========================== */

.features__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-lg);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.features_alt .features__item {
  background-color: var(--color-bg);
}

.features__item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.features__item_highlighted {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}

/* ===========================
   Element: icon
   =========================== */

.features__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin-bottom: var(--spacing-md);
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  color: var(--color-accent);
}

.features__icon svg {
  width: 32px;
  height: 32px;
  fill: currentColor;
}

/* For stroke-based SVG icons */
.features__icon svg[fill="none"] {
  fill: none;
  stroke: currentColor;
}

.features__icon_primary {
  background-color: var(--color-primary);
  color: var(--color-bg);
}

.features__icon_accent {
  background-color: var(--color-accent);
  color: var(--color-bg);
}

/* ===========================
   Element: title (item title)
   =========================== */

.features__item-title {
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
}

/* ===========================
   Element: text (item description)
   =========================== */

.features__text {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-muted);
}

/* ===========================
   Element: link
   =========================== */

.features__link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent);
  text-decoration: none;
  transition: gap var(--transition-fast);
}

.features__link:hover {
  gap: var(--spacing-sm);
}

.features__link-icon {
  width: 16px;
  height: 16px;
  fill: currentColor;
  transition: transform var(--transition-fast);
}

.features__link:hover .features__link-icon {
  transform: translateX(4px);
}

/* ===========================
   Modifier: horizontal layout
   =========================== */

.features__item_horizontal {
  flex-direction: row;
  align-items: flex-start;
  text-align: left;
  gap: var(--spacing-md);
}

.features__item_horizontal .features__icon {
  flex-shrink: 0;
  margin-bottom: 0;
}

.features__item_horizontal .features__content {
  flex: 1;
}

/* ===========================
   Media Queries
   =========================== */

/* Small devices (480px and up) */
@media (min-width: 480px) {
  .features__list {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }

  .features__item {
    padding: var(--spacing-xl);
  }
}

/* Medium devices (768px and up) */
@media (min-width: 768px) {
  .features {
    padding: var(--spacing-3xl) 0;
  }

  .features__header {
    margin-bottom: var(--spacing-2xl);
  }

  .features__title {
    font-size: var(--font-size-2xl);
  }

  .features__list {
    gap: var(--spacing-xl);
  }

  .features__icon {
    width: 72px;
    height: 72px;
  }

  .features__icon svg {
    width: 36px;
    height: 36px;
  }
}

/* Large devices (1024px and up) */
@media (min-width: 1024px) {
  .features__list {
    grid-template-columns: repeat(3, 1fr);
  }

  .features__item {
    padding: var(--spacing-xl) var(--spacing-lg);
  }

  /* Horizontal variant for large screens */
  .features__list_horizontal {
    grid-template-columns: repeat(2, 1fr);
  }

  .features__list_horizontal .features__item {
    flex-direction: row;
    align-items: flex-start;
    text-align: left;
    gap: var(--spacing-lg);
  }

  .features__list_horizontal .features__icon {
    margin-bottom: 0;
  }
}

/* Extra large devices (1280px and up) */
@media (min-width: 1280px) {
  .features__list {
    grid-template-columns: repeat(4, 1fr);
  }

  .features__list_three-cols {
    grid-template-columns: repeat(3, 1fr);
  }

  .features__item {
    padding: var(--spacing-2xl);
  }

  .features__icon {
    width: 80px;
    height: 80px;
  }

  .features__icon svg {
    width: 40px;
    height: 40px;
  }

  .features__item-title {
    font-size: var(--font-size-xl);
  }

  .features__text {
    font-size: var(--font-size-base);
  }
}