body {
    background: linear-gradient(135deg, #0a192f 0%, #112240 100%);
    min-height: 100vh;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

/* 背景动画 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 20%, rgba(100, 255, 218, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 191, 255, 0.1) 0%, transparent 50%);
    animation: backgroundPulse 15s ease-in-out infinite;
    z-index: -1;
}

@keyframes backgroundPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.8;
    }
}

.glass-effect {
    background: rgba(17, 34, 64, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
}

.glass-effect:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(100, 255, 218, 0.2);
}

.neon-border {
    position: relative;
}

.neon-border::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, #64FFDA, #00BFFF);
    border-radius: 8px;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.neon-border:focus::after {
    opacity: 1;
}

.input-focus {
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.input-focus:focus {
    border-color: #64FFDA;
    box-shadow: 0 0 0 2px rgba(100, 255, 218, 0.2);
}

.btn-gradient {
    background: linear-gradient(45deg, #64FFDA, #00BFFF);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-gradient::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    animation: buttonShine 3s linear infinite;
}

@keyframes buttonShine {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

.btn-gradient:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(100, 255, 218, 0.3);
}

.btn-gradient:active {
    transform: translateY(0);
}

/* 错误提示样式 */
.error-message {
    color: #ff4d4f;
    font-size: 0.875rem;
    margin-top: 0.5rem;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-5px);
    }
    75% {
        transform: translateX(5px);
    }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 标题动画 */
h1 {
    position: relative;
    display: inline-block;
}

h1::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #64FFDA, #00BFFF);
    animation: titleUnderline 2s ease-in-out infinite;
}

@keyframes titleUnderline {
    0%, 100% {
        width: 0;
        left: 0;
    }
    50% {
        width: 100%;
    }
    75% {
        width: 100%;
        left: 0;
    }
}

/* 数字统计动画 */
.text-3xl {
    position: relative;
    display: inline-block;
}

.text-3xl::after {
    content: '+';
    position: absolute;
    top: -10px;
    right: -15px;
    font-size: 1.5rem;
    color: #64FFDA;
    animation: plusPulse 2s ease-in-out infinite;
}

@keyframes plusPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.8;
    }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .glass-effect {
        padding: 1.5rem;
    }
}