/* ============================================
   1. ПЕРЕМЕННЫЕ И ШРИФТЫ
   ============================================ */
:root {
  --color-accent: #C1272D;
  --color-accent-hover: #A01E23;
  --color-dark: #0B0C10;
  --color-dark-hover: #2C2F33;
  --color-paper: #F4ECE1;
  --color-text-primary: #0B0C10;
  --color-text-secondary: #2C2F33;
  --color-white: #FFFFFF;
  --color-gray: #808080;
  --color-black: #000000;
  --color-black-light: rgba(0,0,0,0.1);
  --color-border: rgba(193,39,45,0.3);

  --font-primary: 'ST-KOSMOLET', monospace;
  --font-secondary: 'PT Serif', 'Times New Roman', serif;

  --shadow-plakat: 6px 6px 0 var(--color-black-light);
}

/* ============================================
   2. ПОДКЛЮЧЕНИЕ ШРИФТОВ
   ============================================ */
@font-face {
  font-family: 'ST-KOSMOLET';
  src: url('fonts/st-kosmolet-construtivism.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'ST-KOSMOLET';
  src: url('fonts/st-kosmolet-construtivism.ttf') format('truetype');
  font-weight: bold;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'PT Serif';
  src: url('fonts/ofont.ru_PT Serif.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

/* ============================================
   3. ГЛОБАЛЬНЫЕ СТИЛИ
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-secondary);
  background-color: var(--color-paper);
  color: var(--color-text-primary);
  position: relative;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   4. ФОНОВЫЕ ЭФФЕКТЫ
   ============================================ */

/* Диагональные линии */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: repeating-linear-gradient(
    45deg,
    rgba(193,39,45,0.08) 0px,
    rgba(193,39,45,0.08) 20px,
    transparent 20px,
    transparent 40px
  );
  pointer-events: none;
  z-index: -1;
  opacity: 0.8;
}

/* Фоновое изображение */
body::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  background-image: url('../images/pokoriteli.jpg');
  background-size: cover;
  background-position: 50% -8%;
  background-repeat: no-repeat;
  opacity: 0.8;
  mix-blend-mode: multiply;
}

/* Текстурный шум поверх всего */
.page__noise {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 999;
  opacity: 0.4;
  background-image: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzMDAiIGhlaWdodD0iMzAwIj48ZmlsdGVyIGlkPSJmIj48ZmVUdXJidWxlbmNlIHR5cGU9ImZyYWN0YWxOb2lzZSIgYmFzZUZyZXF1ZW5jeT0iLjciIG51bU9jdGF2ZXM9IjMiLz48L2ZpbHRlcj48cmVjdCB3aWR0aD0iMTAwJSIgaGVpZ2h0PSIxMDAlIiBmaWx0ZXI9InVybCgjZikiIG9wYWNpdHk9IjAuNSIvPjwvc3ZnPg==');
  background-repeat: repeat;
}

/* ============================================
   5. УТИЛИТЫ (Helpers)
   ============================================ */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.text-center {
  text-align: center;
}

/* ============================================
   6. БЛОК: HEADER
   ============================================ */
.header {
  background-color: var(--color-dark);
  border-bottom: 4px solid var(--color-accent);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
}

.header__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
}

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

.header__icon {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-accent);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-white);
}

.header__title {
  font-family: var(--font-primary);
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -0.025em;
  color: var(--color-white);
}

.header__subtitle {
  display: block;
  font-size: 0.75rem;
  color: var(--color-accent);
}

.header__nav {
  display: flex;
  gap: 1.5rem;
  font-family: var(--font-primary);
  font-weight: 700;
  font-size: 0.875rem;
}

.header__link {
  color: var(--color-white);
  text-decoration: none;
  transition: opacity 0.2s;
  letter-spacing: 0.025em;
}

.header__link:hover {
  opacity: 0.8;
}

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

/* ============================================
   7. БЛОК: BUTTON
   ============================================ */
.button {
  display: inline-block;
  font-family: var(--font-primary);
  font-weight: 700;
  padding: 0.5rem 1.5rem;
  transition: background-color 0.2s, transform 0.2s;
  text-decoration: none;
  cursor: pointer;
  border: none;
  text-align: center;
}

.button--primary {
  background-color: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}

.button--primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
}

.button--dark {
  background-color: var(--color-dark);
  color: var(--color-paper);
  border: 1px solid var(--color-accent);
}

.button--dark:hover {
  background-color: var(--color-dark-hover);
  transform: translateY(-2px);
}

.button--large {
  font-size: 1.25rem;
  padding: 0.75rem 1.5rem;
}

.button--block {
  display: block;
  width: 100%;
}

.button--sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* Алиас для обратной совместимости со старыми классами */
.btn-red {
  @extend .button--primary; /* не работает в чистом CSS, дублируем */
  background-color: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
  font-family: var(--font-primary);
  font-weight: 700;
  padding: 0.5rem 1.5rem;
  transition: background-color 0.2s, transform 0.2s;
  border: none;
  cursor: pointer;
  display: inline-block;
  text-align: center;
  text-decoration: none;
}
.btn-red:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
}

/* ============================================
   8. БЛОК: HERO (главная страница)
   ============================================ */
.hero {
  padding: 4rem 0;
}

.hero__card {
  border: 3px solid var(--color-accent);
  background-color: rgba(255,255,255,0.6);
  box-shadow: var(--shadow-plakat);
  padding: 2rem;
  max-width: 64rem;
}

.hero__slogan {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-white);
  padding: 0.5rem 1rem;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 1rem;
}

.hero__title {
  font-family: var(--font-primary);
  font-size: 3rem;
  font-weight: 900;
  line-height: 1.2;
  margin-top: 0.5rem;
  color: var(--color-text-primary);
}

.hero__description {
  font-size: 1.125rem;
  margin-top: 1rem;
  max-width: 42rem;
  color: var(--color-text-secondary);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.hero__footer {
  font-size: 0.7rem;
  text-transform: uppercase;
  font-family: monospace;
  opacity: 0.8;
  line-height: 1.2;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

/* ============================================
   9. БЛОК: COURSES (главная страница)
   ============================================ */
.courses {
  padding: 4rem 0;
}

.courses__card {
  border: 3px solid var(--color-accent);
  background-color: rgba(255,255,255,0.6);
  box-shadow: var(--shadow-plakat);
  padding: 2rem;
}

.courses__header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 1rem;
  margin-bottom: 2rem;
}

.courses__title {
  font-family: var(--font-primary);
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: -0.025em;
  color: var(--color-text-primary);
}

.courses__tabs {
  display: flex;
  gap: 0.5rem;
}

.courses__tab {
  font-family: var(--font-primary);
  font-weight: 700;
  padding: 0.5rem 1.5rem;
  transition: background-color 0.2s, color 0.2s;
  cursor: pointer;
  border: none;
  background-color: #E5E7EB;
  color: var(--color-black);
}

.courses__tab--active {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.courses__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

/* ============================================
   10. БЛОК: COURSE-CARD
   ============================================ */
.course-card {
  background-color: rgba(255,255,255,0.6);
  padding: 1.25rem;
  border: 2px solid rgba(0,0,0,0.2);
  transition: transform 0.2s, box-shadow 0.2s;
}

.course-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.course-card__icon {
  width: 3.5rem;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.75rem;
  border: 2px solid var(--color-accent);
  font-size: 1.875rem;
  color: var(--color-accent);
}

.course-card__title {
  font-family: var(--font-primary);
  font-size: 1.5rem;
  font-weight: 900;
}

.course-card__description {
  margin-top: 0.25rem;
}

.course-card__meta {
  display: flex;
  justify-content: space-between;
  margin-top: 1rem;
  font-size: 0.875rem;
  font-family: monospace;
}

.course-card__price {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-accent);
  margin-top: 1rem;
}

.course-card__button {
  margin-top: 1rem;
}

/* ============================================
   11. БЛОК: MEDIA (страница медиатеки)
   ============================================ */
.media {
  padding: 4rem 0;
}

.media__card {
  border: 3px solid var(--color-accent);
  background-color: rgba(255,255,255,0.6);
  box-shadow: var(--shadow-plakat);
  padding: 2rem;
}

.media__title {
  font-family: var(--font-primary);
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 2rem;
  text-align: right;
  border-right: 8px solid var(--color-accent);
  padding-right: 1.25rem;
}

.media__grid {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.media__grid--3 {
  grid-template-columns: 1fr;
}

.media__grid--2 {
  grid-template-columns: 1fr;
}

.media__item {
  background-color: var(--color-white);
  border: 2px solid rgba(0,0,0,0.2);
  overflow: hidden;
}

.media__item-image {
  width: 100%;
  height: 14rem;
  object-fit: cover;
}

.media__item-body {
  padding: 1rem;
}

.media__item-title {
  font-family: var(--font-primary);
  font-weight: 700;
}

.media__item-date {
  color: var(--color-accent);
  font-family: var(--font-primary);
  font-size: 0.875rem;
}

.media__item-link {
  display: inline-block;
  margin-top: 0.75rem;
  color: var(--color-accent);
  font-weight: 700;
  text-decoration: none;
}

.media__item-link:hover {
  text-decoration: underline;
}

.media__archive {
  background-color: rgba(11,12,16,0.9);
  padding: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.media__archive-icon {
  font-size: 2.25rem;
  color: var(--color-accent);
}

.media__archive-title {
  font-family: var(--font-primary);
  font-size: 1.5rem;
  color: var(--color-white);
}

.media__archive-desc {
  color: #D1D5DB;
}

/* ============================================
   12. БЛОК: SHOP (магазин)
   ============================================ */
.shop {
  padding: 4rem 0;
}

.shop__card {
  border: 3px solid var(--color-accent);
  background-color: rgba(255,255,255,0.6);
  box-shadow: var(--shadow-plakat);
  padding: 2rem;
}

.shop__title {
  font-family: var(--font-primary);
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 2rem;
  border-left: 8px solid var(--color-accent);
  padding-left: 1.25rem;
}

.shop__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

/* ============================================
   13. БЛОК: PRODUCT-CARD
   ============================================ */
.product-card {
  background-color: var(--color-white);
  padding: 1.25rem;
  border: 2px solid rgba(0,0,0,0.2);
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.product-card__icon {
  font-size: 3rem;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.product-card__title {
  font-family: var(--font-primary);
  font-weight: 700;
  font-size: 1.25rem;
}

.product-card__price {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-accent);
  margin: 0.5rem 0;
}

/* ============================================
   14. БЛОК: CONTACT (форма)
   ============================================ */
.contact {
  padding: 4rem 0;
  background-color: var(--color-dark);
}

.contact__inner {
  max-width: 36rem;
  margin: 0 auto;
  text-align: center;
}

.contact__title {
  font-family: var(--font-primary);
  font-size: 2.25rem;
  color: var(--color-white);
  margin-bottom: 1rem;
}

.contact__form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}

.contact__input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-primary);
  color: var(--color-black);
  border: none;
}

.contact__input::placeholder {
  color: #9CA3AF;
}

.contact__footer-text {
  font-size: 0.7rem;
  text-transform: uppercase;
  font-family: monospace;
  opacity: 0.6;
  margin-top: 2rem;
  color: var(--color-white);
}

/* ============================================
   15. БЛОК: FOOTER
   ============================================ */
.footer {
  background-color: var(--color-dark);
  border-top: 4px solid var(--color-accent);
  color: #9CA3AF;
  padding: 2.5rem 0;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  text-align: center;
}

.footer__title {
  font-family: var(--font-primary);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-white);
}

.footer__text {
  font-size: 0.75rem;
}

.footer__bottom {
  text-align: center;
  font-size: 0.75rem;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid #374151;
  font-family: var(--font-primary);
}

/* ============================================
   16. ДОПОЛНИТЕЛЬНЫЕ КЛАССЫ (для error.html и общие)
   ============================================ */

/* Плакатная карточка – универсальный стиль */
.plakat-card {
  border: 3px solid var(--color-accent);
  background-color: rgba(255, 255, 255, 0.6);
  box-shadow: var(--shadow-plakat);
  padding: 2rem;
}

/* Лозунг-полоса (красная полоса с текстом) */
.slogan-stripe {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-white);
  padding: 0.5rem 1rem;
  font-weight: 700;
  letter-spacing: 2px;
}

/* Афишный мелкий текст (повторяющаяся строка) */
.afisha-repeat {
  font-size: 0.7rem;
  text-transform: uppercase;
  font-family: monospace;
  opacity: 0.8;
  line-height: 1.2;
}

/* Единый класс для заголовков в стиле конструктивизма */
.futuristic-title {
  font-family: var(--font-primary);
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* ============================================
   17. АДАПТИВНОСТЬ
   ============================================ */

/* Планшеты (768px и выше) */
@media (min-width: 768px) {
  .hero__title {
    font-size: 4.5rem;
  }

  .courses__title {
    font-size: 3.75rem;
  }

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

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

  .media__grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .shop__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .footer__inner {
    grid-template-columns: repeat(3, 1fr);
    text-align: left;
  }

  .hero__card {
    padding: 2.5rem;
  }

  .courses__card {
    padding: 2rem;
  }

  .media__card {
    padding: 2rem;
  }

  .shop__card {
    padding: 2rem;
  }
}

/* Десктопы (1024px и выше) */
@media (min-width: 1024px) {
  .hero {
    padding: 6rem 0;
  }

  .hero__title {
    font-size: 5rem;
  }

  .courses {
    padding: 4rem 0;
  }

  .media {
    padding: 4rem 0;
  }

  .shop {
    padding: 4rem 0;
  }

  .contact {
    padding: 4rem 0;
  }
}

/* Мобильные устройства (до 767px) */
@media (max-width: 767px) {
  .header__title {
    font-size: 1.25rem;
  }

  .header__nav {
    gap: 1rem;
    font-size: 0.75rem;
  }

  .hero__title {
    font-size: 2.5rem;
  }

  .courses__title {
    font-size: 2.5rem;
  }

  .media__title {
    font-size: 2.5rem;
    text-align: left;
    border-right: none;
    border-left: 8px solid var(--color-accent);
    padding-left: 1.25rem;
  }

  .shop__title {
    font-size: 2.5rem;
  }

  .contact__title {
    font-size: 1.875rem;
  }
}