.app[data-holiday="september"] {
  --school-ink: #243a35;
  --school-muted: #66736f;
  --school-paper: #fff7e6;
  --school-paper-soft: #e5f5ef;
  --school-pink: #db3f5a;
  --school-green: #2c9b86;
  --school-yellow: #f6c84b;
  background:
    radial-gradient(circle at 15% 5%, rgba(255, 255, 255, 0.18), transparent 30%),
    radial-gradient(circle at 9% 84%, rgba(44, 155, 134, 0.2), transparent 20rem),
    radial-gradient(circle at 88% 84%, rgba(219, 63, 90, 0.22), transparent 22rem),
    linear-gradient(135deg, #f6c84b 0%, #ee8a4f 100%);
  color: var(--school-ink);
}

.app[data-holiday="september"] .calendar-panel,
.app[data-holiday="september"] .search-panel,
.app[data-holiday="september"] .result-panel {
  --card: var(--school-paper);
  --background: var(--school-paper);
  --muted: rgba(44, 155, 134, 0.13);
  --muted-foreground: var(--school-muted);
  --accent: rgba(36, 58, 53, 0.08);
  --foreground: var(--school-ink);
  --card-foreground: var(--school-ink);
  --border: rgba(36, 58, 53, 0.16);
  --input: rgba(36, 58, 53, 0.24);
  position: relative;
  padding: clamp(18px, 2.4vw, 34px);
  color: var(--school-ink);
  background: rgba(255, 247, 230, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.56);
  border-radius: 10px;
  box-shadow:
    12px 14px 0 var(--school-green),
    0 25px 70px rgba(85, 50, 14, 0.2);
}

.app[data-holiday="september"] .search-panel,
.app[data-holiday="september"] .result-panel {
  box-shadow:
    12px 14px 0 var(--school-pink),
    0 25px 70px rgba(85, 50, 14, 0.2);
}

.app[data-holiday="september"] .calendar-panel {
  transform: rotate(-0.65deg);
}

.app[data-holiday="september"] .search-panel {
  transform: rotate(0.6deg);
}

.app[data-holiday="september"] .result-panel {
  transform: rotate(-0.25deg);
}

.app[data-holiday="september"] .calendar-panel::before,
.app[data-holiday="september"] .search-panel::before,
.app[data-holiday="september"] .result-panel::before {
  content: "";
  position: absolute;
  top: -14px;
  left: 50%;
  z-index: 3;
  width: 112px;
  height: 28px;
  background: rgba(255, 224, 130, 0.78);
  border-radius: 2px;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.48) inset;
  transform: translateX(-50%) rotate(-2deg);
}

.app[data-holiday="september"] .search-panel::before {
  transform: translateX(-50%) rotate(2deg);
}

.app[data-holiday="september"] .holiday-ribbon {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(#ffffff 2px, transparent 2px) 0 0 / 30px 30px,
    radial-gradient(ellipse at 7% 93%, rgba(214, 129, 44, 0.4) 0 16px, transparent 17px),
    radial-gradient(ellipse at 13% 97%, rgba(145, 92, 37, 0.32) 0 18px, transparent 19px),
    radial-gradient(ellipse at 92% 92%, rgba(44, 155, 134, 0.28) 0 46px, transparent 48px),
    radial-gradient(ellipse at 96% 98%, rgba(219, 63, 90, 0.22) 0 58px, transparent 60px);
  opacity: 0.88;
}

.app[data-holiday="september"] .garland {
  position: fixed;
  left: 0;
  right: 0;
  top: 116px;
  height: 35px;
  background:
    repeating-linear-gradient(
      135deg,
      var(--school-pink) 0 25px,
      transparent 25px 50px,
      var(--school-green) 50px 75px,
      transparent 75px 100px
    );
  clip-path: polygon(0 0, 100% 0, 100% 16%, 0 16%);
  opacity: 0.9;
}

.app[data-holiday="september"] .holiday-ribbon::before {
  content: "";
  position: fixed;
  right: 34px;
  top: 104px;
  width: 118px;
  height: 124px;
  background:
    url("../../Img/Bells.svg") center 8px / 102px auto no-repeat;
  filter: drop-shadow(0 10px 14px rgba(0, 0, 0, 0.18));
  transform-origin: 50% 4px;
  animation: bell-swing 3.2s ease-in-out infinite;
}

.app[data-holiday="september"] .holiday-ribbon::after {
  content: "";
  position: fixed;
  right: clamp(24px, 5vw, 76px);
  bottom: clamp(124px, 18vh, 190px);
  width: 176px;
  height: 176px;
  background: url("../../Img/open-book.svg") center / contain no-repeat;
  filter: drop-shadow(0 18px 24px rgba(95, 61, 30, 0.22));
}

.app[data-holiday="september"] .flag-wave {
  position: fixed;
  right: clamp(20px, 4vw, 64px);
  bottom: clamp(22px, 4vh, 44px);
  width: min(360px, calc(100vw - 40px));
  padding: 18px 24px;
  color: var(--school-ink);
  background: rgba(255, 247, 230, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: 10px;
  box-shadow:
    10px 12px 0 var(--school-green),
    0 18px 42px rgba(85, 50, 14, 0.22);
  transform: rotate(-1.2deg);
}

.app[data-holiday="september"] .flag-wave::before {
  content: "С началом учебного года!";
  display: block;
  font-size: clamp(18px, 2vw, 28px);
  font-weight: 800;
  line-height: 1.08;
}

.app[data-holiday="september"] .flag-wave::after {
  content: "";
  position: absolute;
  top: -12px;
  left: 50%;
  width: 92px;
  height: 24px;
  background: rgba(255, 224, 130, 0.78);
  border-radius: 2px;
  transform: translateX(-50%) rotate(3deg);
}

@keyframes bell-swing {
  0%, 100% { transform: rotate(-8deg) translateY(0); }
  50% { transform: rotate(8deg) translateY(4px); }
}

@media (max-width: 980px) {
  .app[data-holiday="september"] .calendar-panel,
  .app[data-holiday="september"] .search-panel,
  .app[data-holiday="september"] .result-panel {
    transform: none;
  }

  .app[data-holiday="september"] .garland {
    top: 92px;
  }
}

@media (max-width: 640px) {
  .app[data-holiday="september"] .holiday-ribbon::before {
    right: 14px;
    top: 84px;
    width: 86px;
    height: 92px;
    background-size: 76px auto;
    opacity: 0.82;
  }

  .app[data-holiday="september"] .holiday-ribbon::after {
    right: 12px;
    bottom: 98px;
    width: 104px;
    height: 104px;
    opacity: 0.78;
  }

  .app[data-holiday="september"] .garland {
    display: none;
  }

  .app[data-holiday="september"] .flag-wave {
    right: 14px;
    bottom: 14px;
    width: min(270px, calc(100vw - 28px));
    padding: 14px 16px;
    box-shadow:
      7px 8px 0 var(--school-green),
      0 14px 30px rgba(85, 50, 14, 0.18);
  }

  .app[data-holiday="september"] .flag-wave::before {
    font-size: 18px;
  }
}