/* ============================================
   HOME PAGE — Китай Всё По Делу
   Depends on: variables.css, components.css
   Mobile-first
   ============================================ */


/* ————————————————————————————————————————————
   0. ANIMATIONS
   ———————————————————————————————————————————— */

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes heroFloat1 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(20px, -15px); }
}

@keyframes heroFloat2 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-15px, 20px); }
}

@keyframes emptyFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Hero элементы — всегда анимируются при загрузке */
.hero__title {
  animation: fadeInUp 0.8s ease-out;
}

.hero__subtitle {
  animation: fadeInUp 0.8s ease-out 0.15s both;
}

.search-bar--hero {
  animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero__tags {
  animation: fadeIn 0.8s ease-out 0.5s both;
}

/* Scroll-triggered анимации — элементы начинают скрытыми */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger-эффект для карточек внутри видимого контейнера */
.scroll-reveal-stagger .scroll-reveal-item {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.scroll-reveal-stagger.visible .scroll-reveal-item {
  opacity: 1;
  transform: translateY(0);
}

.scroll-reveal-stagger.visible .scroll-reveal-item:nth-child(1) { transition-delay: 0ms; }
.scroll-reveal-stagger.visible .scroll-reveal-item:nth-child(2) { transition-delay: 60ms; }
.scroll-reveal-stagger.visible .scroll-reveal-item:nth-child(3) { transition-delay: 120ms; }
.scroll-reveal-stagger.visible .scroll-reveal-item:nth-child(4) { transition-delay: 180ms; }
.scroll-reveal-stagger.visible .scroll-reveal-item:nth-child(5) { transition-delay: 240ms; }
.scroll-reveal-stagger.visible .scroll-reveal-item:nth-child(6) { transition-delay: 300ms; }
.scroll-reveal-stagger.visible .scroll-reveal-item:nth-child(7) { transition-delay: 360ms; }
.scroll-reveal-stagger.visible .scroll-reveal-item:nth-child(8) { transition-delay: 420ms; }
.scroll-reveal-stagger.visible .scroll-reveal-item:nth-child(9) { transition-delay: 480ms; }
.scroll-reveal-stagger.visible .scroll-reveal-item:nth-child(10) { transition-delay: 540ms; }


/* ————————————————————————————————————————————
   1. HERO SECTION
   ———————————————————————————————————————————— */

.hero {
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-active) 100%);
  padding: var(--space-24) var(--container-padding);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  position: relative;
  overflow: hidden;
}

/* SVG-паттерн поверх — китайские облака / геометрия */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.07'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

/* Декоративные полупрозрачные круги */
.hero::after {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.06);
  top: -150px;
  right: -100px;
  pointer-events: none;
  z-index: 0;
  animation: heroFloat1 8s ease-in-out infinite;
}

.hero__decor {
  position: absolute;
  width: 350px;
  height: 350px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  bottom: -100px;
  left: -80px;
  pointer-events: none;
  z-index: 0;
  animation: heroFloat2 10s ease-in-out infinite;
}

/* Контент hero поверх декора */
.hero__title,
.hero__subtitle,
.search-bar--hero,
.hero__tags {
  position: relative;
  z-index: 1;
}

.hero__title {
  color: var(--color-white);
  font-size: var(--font-size-7xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  max-width: 800px;
}

.hero__subtitle {
  color: var(--color-white);
  opacity: 0.85;
  font-size: var(--font-size-2xl);
  max-width: 600px;
  line-height: var(--line-height-normal);
}

.hero__tags {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  justify-content: center;
}


/* ————————————————————————————————————————————
   2. SECTIONS GRID
   ———————————————————————————————————————————— */

.sections {
  padding: var(--space-20) var(--container-padding);
  text-align: center;
}

.sections__title {
  font-size: var(--font-size-6xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-dark);
  margin-bottom: var(--space-10);
}

/* Секция-карточка */
.section-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: left;
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
  cursor: pointer;
  display: block;
  color: inherit;
  border-top: 3px solid var(--color-primary);
}

.section-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  color: inherit;
  border-top-color: var(--color-primary-hover);
}

.section-card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-4);
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-base);
}

.section-card__icon svg {
  width: 24px;
  height: 24px;
}

.section-card:hover .section-card__icon {
  transform: scale(1.1);
}

.section-card__name {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-dark);
  margin-bottom: var(--space-2);
}

.section-card__desc {
  font-size: var(--font-size-base);
  color: var(--color-gray);
  line-height: var(--line-height-normal);
}

.sections__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 480px) {
  .sections__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 769px) {
  .sections__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1025px) {
  .sections__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Разделитель между секциями */
.sections::after {
  content: '';
  display: block;
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-primary-light), transparent);
  margin: var(--space-16) auto 0;
}


/* ————————————————————————————————————————————
   3. ADVANTAGES
   ———————————————————————————————————————————— */

.advantages {
  background: var(--color-white);
  padding: var(--space-20) var(--container-padding);
  text-align: center;
}

.advantages__title {
  font-size: var(--font-size-6xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-dark);
  margin-bottom: var(--space-12);
}

.adv-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 769px) {
  .adv-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1025px) {
  .adv-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.adv-card {
  background: var(--color-primary-light);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: left;
}

.adv-card__number {
  font-size: 2.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  line-height: 1;
}

.adv-card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-dark);
  margin-bottom: var(--space-2);
}

.adv-card__text {
  font-size: var(--font-size-base);
  color: var(--color-gray);
  line-height: var(--line-height-normal);
}

.advantages::after {
  content: '';
  display: block;
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-gray-border), transparent);
  margin: var(--space-16) auto 0;
}


/* ————————————————————————————————————————————
   4. NEWS / ACTIVITY FEED
   ———————————————————————————————————————————— */

.feed {
  padding: var(--space-20) var(--container-padding);
}

.feed__title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-8);
  color: var(--color-dark);
}

.feed__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.feed__item {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.feed__item:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.feed__item-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-dark);
}

.feed__item-meta {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  white-space: nowrap;
  margin-left: var(--space-4);
}

.feed__list:not(:empty) + .feed__empty {
  display: none;
}

.feed__list:empty {
  display: none;
}


/* ————————————————————————————————————————————
   5. CTA SECTION
   ———————————————————————————————————————————— */

.cta {
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-active) 100%);
  padding: var(--space-20) var(--container-padding);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  top: -100px;
  left: -100px;
  pointer-events: none;
}

.cta__title {
  color: var(--color-white);
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  position: relative;
  z-index: 1;
}

.cta__text {
  color: var(--color-white);
  opacity: 0.85;
  font-size: var(--font-size-xl);
  max-width: 560px;
  line-height: var(--line-height-normal);
  position: relative;
  z-index: 1;
}

.cta__btn {
  background: var(--color-white);
  color: var(--color-primary);
  padding: var(--space-4) var(--space-10);
  border-radius: var(--radius-md);
  border: none;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  font-family: var(--font-family);
  cursor: pointer;
  transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
  position: relative;
  z-index: 1;
}

.cta__btn:hover {
  background: var(--color-gray-bg);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.cta__btn:active {
  transform: translateY(0);
}

/* Плавность для тегов hero */
.tag--white {
  transition: background var(--transition-base), transform var(--transition-base);
}

.tag--white:hover {
  background: rgba(255, 255, 255, 0.35);
  transform: translateY(-1px);
}