.error-container {
    min-height: calc(100vh - 84px);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.error-content {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.error-code {
    font-size: 8rem;
    font-weight: bold;
    margin-bottom: 1rem;
    line-height: 1;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 2px 10px rgba(14, 165, 233, 0.1);
}

.error-title {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text);
}

.error-message {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--text-dim);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 2rem;
    border-radius: 12px;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn i {
    font-size: 1.1rem;
    opacity: 0.9;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), #3b82f6);
    color: white;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(14, 165, 233, 0.3);
}

.btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transform: translateX(-100%);
    transition: transform 0.5s ease;
}

.btn:hover::after {
    transform: translateX(100%);
}

/* 背景装饰 */
.error-container::before,
.error-container::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.1;
    z-index: 1;
}

.error-container::before {
    width: 400px;
    height: 400px;
    background: var(--accent);
    top: -100px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
}

.error-container::after {
    width: 300px;
    height: 300px;
    background: var(--primary);
    bottom: -50px;
    left: -50px;
    animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, -30px); }
}

@media (max-width: 768px) {
    .error-code {
        font-size: 6rem;
    }
    
    .error-title {
        font-size: 1.5rem;
    }
    
    .error-message {
        font-size: 1rem;
    }
}