/* ============================================
   ГРАНДШИНА — Promotional Banner
   Winter tire discount banner 16:9
   ============================================ */

/* ============================================
   Banner Container
   ============================================ */

.promo-banner {
  --banner-bg: linear-gradient(135deg, #0a1628 0%, #1a3a5c 50%, #0a1628 100%);
  --banner-bg-image: none;
  --banner-overlay: rgba(10, 22, 40, 0.6);
  --banner-radius: 20px;
  --banner-padding: 0;
  --banner-max-width: 1200px;
  --banner-height: 340px;
  --banner-transition: 0.4s ease;

  position: relative;
  width: 100%;
  max-width: var(--banner-max-width);
  height: var(--banner-height);
  margin: 30px auto;
  border-radius: var(--banner-radius);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Background Image */
.promo-banner__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--banner-bg);
  background-image: var(--banner-bg-image);
  background-size: cover;
  background-position: center;
  z-index: 1;
}

/* Frost Overlay */
.promo-banner__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--banner-overlay);
  z-index: 2;
}

/* Frost/Mist Effect */
.promo-banner__frost {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at 70% 50%, rgba(255, 255, 255, 0.08) 0%, transparent 60%);
  z-index: 3;
  pointer-events: none;
}

/* Content */
.promo-banner__content {
  position: relative;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 40px 50px;
  gap: 30px;
}

/* Left Side — Discount Block */
.promo-banner__discount {
  flex: 0 0 auto;
  background: linear-gradient(135deg, #0066cc 0%, #0044aa 100%);
  border-radius: 16px;
  padding: 35px 45px;
  position: relative;
  box-shadow: 0 8px 24px rgba(0, 102, 204, 0.4);
  max-width: 420px;
}

/* Snowflakes around discount block */
.promo-banner__discount::before,
.promo-banner__discount::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: -1;
}

.promo-banner__snowflakes {
  position: absolute;
  top: -20px;
  left: -20px;
  right: -20px;
  bottom: -20px;
  pointer-events: none;
  z-index: 0;
}

.promo-banner__snowflake {
  position: absolute;
  color: rgba(255, 255, 255, 0.6);
  animation: snowflake-fall 6s ease-in-out infinite;
}

.promo-banner__snowflake--1 {
  top: -10px;
  left: -15px;
  font-size: 24px;
  animation-delay: 0s;
}

.promo-banner__snowflake--2 {
  top: 20%;
  right: -25px;
  font-size: 18px;
  animation-delay: 1s;
}

.promo-banner__snowflake--3 {
  bottom: 10%;
  left: -20px;
  font-size: 20px;
  animation-delay: 2s;
}

.promo-banner__snowflake--4 {
  bottom: -10px;
  right: 20%;
  font-size: 16px;
  animation-delay: 3s;
}

.promo-banner__snowflake--5 {
  top: 50%;
  left: -30px;
  font-size: 22px;
  animation-delay: 1.5s;
}

.promo-banner__snowflake--6 {
  top: -15px;
  right: 30%;
  font-size: 14px;
  animation-delay: 2.5s;
}

@keyframes snowflake-fall {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
    opacity: 0.6;
  }
  50% {
    transform: translateY(5px) rotate(180deg);
    opacity: 1;
  }
}

/* Discount Percentage */
.promo-banner__discount-value {
  font-size: var(--banner-discount-size, 72px);
  font-weight: 800;
  color: #ffffff;
  line-height: 1;
  margin-bottom: 12px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  position: relative;
  z-index: 1;
}

.promo-banner__discount-value span {
  font-size: 0.6em;
  vertical-align: super;
  margin-right: 2px;
}

/* Discount Subtitle */
.promo-banner__discount-subtitle {
  font-size: var(--banner-subtitle-size, 20px);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.95);
  margin: 0 0 8px 0;
  letter-spacing: 0.5px;
  position: relative;
  z-index: 1;
}

/* Discount Date */
.promo-banner__discount-date {
  font-size: var(--banner-date-size, 14px);
  font-weight: 400;
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 20px;
  display: inline-block;
  backdrop-filter: blur(4px);
  position: relative;
  z-index: 1;
}

/* Right Side — Tire Image */
.promo-banner__image {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  position: relative;
}

.promo-banner__image img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.5));
  transition: transform var(--banner-transition);
}

.promo-banner:hover .promo-banner__image img {
  transform: scale(1.05) rotate(-2deg);
}

/* CTA Button */
.promo-banner__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  padding: 12px 28px;
  font-size: var(--banner-cta-size, 15px);
  font-weight: 600;
  font-family: 'Roboto', 'Segoe UI', Arial, sans-serif;
  color: #ffffff;
  background: var(--banner-cta-bg, #e94560);
  border: none;
  border-radius: 8px;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--banner-transition);
  box-shadow: 0 4px 12px rgba(233, 69, 96, 0.4);
  position: relative;
  z-index: 1;
}

.promo-banner__cta:hover {
  background: var(--banner-cta-hover, #d63a52);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(233, 69, 96, 0.5);
}

.promo-banner__cta:active {
  transform: translateY(0);
}

/* ============================================
   Tablet Styles (768px – 1024px)
   ============================================ */

@media (max-width: 1024px) {
  :root {
    --banner-height: 280px;
  }

  .promo-banner__content {
    padding: 30px 40px;
  }

  .promo-banner__discount {
    padding: 28px 35px;
  }

  :root {
    --banner-discount-size: 56px;
    --banner-subtitle-size: 18px;
  }
}

/* ============================================
   Mobile Styles (<768px)
   ============================================ */

@media (max-width: 768px) {
  :root {
    --banner-height: auto;
    --banner-discount-size: 48px;
    --banner-subtitle-size: 16px;
    --banner-date-size: 13px;
    --banner-cta-size: 14px;
  }

  .promo-banner {
    margin: 20px 15px;
    border-radius: 16px;
  }

  .promo-banner__content {
    flex-direction: column;
    padding: 30px 25px;
    gap: 25px;
  }

  .promo-banner__discount {
    width: 100%;
    padding: 25px 30px;
    text-align: center;
  }

  .promo-banner__image {
    width: 100%;
    max-height: 250px;
  }

  .promo-banner__snowflake {
    display: none;
  }

  .promo-banner__snowflake--1,
  .promo-banner__snowflake--2 {
    display: block;
  }
}

/* ============================================
   Small Mobile (<480px)
   ============================================ */

@media (max-width: 480px) {
  :root {
    --banner-discount-size: 40px;
    --banner-subtitle-size: 14px;
    --banner-date-size: 12px;
  }

  .promo-banner__content {
    padding: 25px 20px;
  }

  .promo-banner__discount {
    padding: 20px 25px;
  }

  .promo-banner__image {
    max-height: 180px;
  }
}

/* ============================================
   Accessibility
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  .promo-banner__snowflake {
    animation: none;
  }

  .promo-banner__image img {
    transition: none;
  }

  .promo-banner:hover .promo-banner__image img {
    transform: none;
  }
}