/* ========================================
   RESET
======================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', sans-serif;
  background: #000;
  color: #fff;
  overflow-x: hidden;
}

/* ========================================
   VIDEO BACKGROUND
======================================== */

#bg-video {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
  filter: brightness(0.35);
}

/* ========================================
   NAVBAR
======================================== */

.navbar {
  position: fixed;
  width: 100%;
  top: 0;
  padding: 20px 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;

  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);

  border-bottom: 1px solid rgba(255,255,255,0.15);
  z-index: 1000;
}

.logo {
  font-weight: 600;
  letter-spacing: 2px;
}

.nav-links a {
  margin-left: 30px;
  text-decoration: none;
  color: #fff;
  font-size: 14px;
  letter-spacing: 1px;
  transition: 0.2s ease;
}

.nav-links a:hover {
  opacity: 0.6;
}

/* ========================================
   GLOBAL BUTTON
======================================== */

.main-btn {
  display: inline-block;
  padding: 14px 28px;
  background: #fff;
  color: #000;
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 1px;
  transition: 0.3s ease;
}

.main-btn:hover {
  background: #000;
  color: #fff;
  border: 1px solid #fff;
}
/* ========================================
   GLOBAL RESPONSIVE
======================================== */

@media (max-width: 1024px) {

  /* NAVBAR */
  .nav-links {
    gap: 15px;
    font-size: 14px;
  }

  /* SHOP GRID */
  .shop-grid {
    grid-template-columns: 1fr 1fr;
  }

  /* PRODUCT */
  .product-glass {
    flex-direction: column;
    gap: 50px;
    padding: 40px;
  }

  .product-left img {
    width: 100%;
    max-width: 400px;
  }

  /* GLASS CONTAINERS */
  .cart-glass,
  .about-glass,
  .drop-glass {
    padding: 40px;
  }

}

/* ========================================
   MOBILE SYSTEM
======================================== */

@media (max-width: 768px) {

  body {
    overflow-x: hidden;
  }

  /* ================= NAVBAR ================= */

  .navbar {
    padding: 15px 20px;
  }

  .logo {
    font-size: 18px;
    letter-spacing: 2px;
  }

  .nav-links {
    display: none; /* burger zrobimy później */
  }

  /* ================= HERO ================= */

  .hero {
    padding: 0 20px;
    text-align: center;
  }

  .hero h1 {
    font-size: 32px;
    line-height: 1.3;
    letter-spacing: 2px;
  }

  .hero p {
    font-size: 16px;
  }

  .main-btn {
    padding: 14px 28px;
    font-size: 13px;
  }

  /* ================= SHOP ================= */

  .shop-section {
    padding: 120px 20px 80px;
  }

  .shop-title {
    font-size: 30px;
  }

  .shop-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  /* ================= PRODUCT ================= */

  .product-section {
    padding: 120px 20px 80px;
  }

  .product-glass {
    flex-direction: column;
    padding: 30px;
    gap: 40px;
  }

  .product-left img {
    width: 100%;
    max-width: 350px;
  }

  .product-right h1 {
    font-size: 26px;
    letter-spacing: 2px;
  }

  .product-price {
    font-size: 18px;
  }

  .product-description {
    font-size: 15px;
  }

  .sizes {
    justify-content: center;
    flex-wrap: wrap;
  }

  .quantity {
    justify-content: center;
  }

  /* ================= CART ================= */

  .cart-section {
    padding: 120px 20px 80px;
  }

  .cart-glass {
    padding: 30px;
  }

  .cart-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
  }

  .cart-item img {
    width: 100%;
    max-width: 200px;
  }

  /* ================= ABOUT ================= */

  .about-section {
    padding: 140px 20px 80px;
  }

  .about-content h1 {
    font-size: 32px;
    letter-spacing: 2px;
  }

  .about-content p {
    font-size: 16px;
  }

  /* ================= DROP ================= */

  .drop-glass {
    padding: 30px;
  }

  .drop-glass h1 {
    font-size: 30px;
  }

  .countdown {
    gap: 20px;
    flex-wrap: wrap;
  }

  .countdown span {
    font-size: 26px;
  }

}