/* ================= LIGHT 404 ================= */

.error-404 {
  position: relative;
  min-height: 100vh;
  background: linear-gradient(180deg, #f8faff 0%, #eef3ff 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  text-align: center;
  padding: 20px;
}

/* Мягкие плавающие формы */
.shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.15;
  filter: blur(60px);
  animation: float 10s ease-in-out infinite alternate;
}

.shape-1 {
  width: 300px;
  height: 300px;
  background: #427ef4;
  top: -80px;
  left: -80px;
}

.shape-2 {
  width: 250px;
  height: 250px;
  background: #427ef4;
  bottom: -80px;
  right: -80px;
  animation-delay: 3s;
}

@keyframes float {
  0% { transform: translate(0, 0); }
  100% { transform: translate(40px, 30px); }
}

.error-content {
  position: relative;
  z-index: 2;
  max-width: 500px;
}

.error-code {
  font-size: 120px;
  font-weight: 800;
  color: #427ef4;
  margin-bottom: 10px;
  animation: float404 4s ease-in-out infinite;
}

@keyframes float404 {
  0% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
  100% { transform: translateY(0); }
}

.error-content h2 {
  font-size: 28px;
  margin-bottom: 12px;
  color: var(--blue);
}

.error-content p {
  font-size: 16px;
  color: #5c6b8a;
  margin-bottom: 30px;
  line-height: 1.6;
}

.error-btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 30px;
  background: #427ef4;
  color: rgb(255, 255, 255);
  text-decoration: none;
  font-weight: 500;
  transition: 0.3s ease;
}

.error-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 25px rgba(4, 113, 227, 0.25);
}

.error-btn:active {
  transform: scale(0.95);
}