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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(-45deg, #03001e, #9c27b0, #ec38bc);
  background-size: 400% 400%;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  animation: gradientShift 15s ease infinite;
}

/* Блок авторизации */
.auth-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
}

.usermenu {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: 25px;
  padding: 8px 16px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.3s ease;
}

.usermenu:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.login a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

.login a:hover {
  color: white;
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.logo-container {
  position: relative;
  z-index: 10;
  text-align: center;
}

.logo {
  width: 250px;
  height: 250px;
  animation: pulse 2s ease-in-out infinite;
  filter: drop-shadow(0 0 25px rgba(255, 255, 255, 0.7));
  border-radius: 20%;
  background: rgba(255, 255, 255, 0.1);
  padding: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.logo-inner {
  width: 100%;
  height: 100%;
  background-image: url("https://adz.notikz.ru/mod/page/icons/white-logo.png");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

@keyframes pulse {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(236, 56, 188, 0.7);
  }
  50% {
    transform: scale(1.08);
    box-shadow: 0 0 0 20px rgba(236, 56, 188, 0);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(236, 56, 188, 0);
  }
}

.title {
  color: white;
  font-size: 4rem;
  margin-top: 30px;
  text-shadow: 0 0 15px rgba(236, 56, 188, 0.8);
  letter-spacing: 3px;
  font-weight: 700;
  background: linear-gradient(90deg, #fff, #ec38bc, #fff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% 100%;
  animation: textShine 3s linear infinite;
}

@keyframes textShine {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* Анимированные элементы фона */
.bg-elements {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 1;
}

.bg-element {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  animation: float 20s linear infinite;
}

@keyframes float {
  0% {
    transform: translateY(100vh) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 0.3;
  }
  90% {
    opacity: 0.3;
  }
  100% {
    transform: translateY(-100px) rotate(360deg);
    opacity: 0;
  }
}

/* Эффект частиц */
.particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background-color: rgba(255, 255, 255, 0.7);
  border-radius: 50%;
  animation: particleFloat 20s linear infinite;
}

@keyframes particleFloat {
  0% {
    transform: translateY(100vh) translateX(0);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translateY(-100px) translateX(calc(100vw * var(--random-x)));
    opacity: 0;
  }
}

/* Музыкальные ноты */
.music-notes {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 3;
}

.note {
  position: absolute;
  font-size: 2rem;
  color: rgba(255, 255, 255, 0.4);
  animation: noteFloat 15s linear infinite;
}

@keyframes noteFloat {
  0% {
    transform: translateY(100vh) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 0.7;
  }
  90% {
    opacity: 0.7;
  }
  100% {
    transform: translateY(-100px) rotate(360deg);
    opacity: 0;
  }
}