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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #654ea3, #eaafc8);
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.container {
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    width: 420px;
    max-width: 90%;
    overflow: hidden;
    transition: all 0.3s ease;
    z-index: 1;
    position: relative;
}

.container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 120px;
    background: linear-gradient(135deg, #654ea3, #eaafc8);
    z-index: -1;
}

.form-header {
    text-align: center;
    padding: 40px 0 20px;
    color: white;
}

.form-icon {
    margin-bottom: 15px;
}

.logo {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    border: 3px solid white;
}

.form-container {
    padding: 40px 45px;
    background-color: white;
    border-radius: 20px;
    margin-top: -15px;
    position: relative;
}

h2 {
    text-align: center;
    margin-bottom: 0px;
    color: #333;
    font-size: 24px;
    font-weight: 600;
}

.input-group {
    margin-bottom: 25px;
    position: relative;
}

.input-group input {
    width: 100%;
    padding: 15px 45px 15px 15px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
    background-color: rgba(255, 255, 255, 0.8);
}

.input-group input:focus {
    outline: none;
    border-color: #654ea3;
    box-shadow: 0 0 0 3px rgba(101, 78, 163, 0.1);
    background-color: white;
}

.input-group i {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #aaa;
    transition: color 0.3s ease;
}

.input-group input:focus + i {
    color: #654ea3;
}

.remember-me {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    font-size: 14px;
    color: #666;
}

.remember-me input {
    margin-right: 8px;
}

button {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #654ea3, #eaafc8);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 17px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(101, 78, 163, 0.2);
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(101, 78, 163, 0.3);
}

button:active {
    transform: translateY(0);
    box-shadow: 0 5px 15px rgba(101, 78, 163, 0.2);
}

.toggle-form {
    text-align: center;
    margin-top: 25px;
    font-size: 15px;
    color: #666;
}

.toggle-form span {
    color: #654ea3;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.toggle-form span:hover {
    color: #eaafc8;
    text-decoration: underline;
}

.error-message {
    color: #e74c3c;
    margin-top: 12px;
    text-align: center;
    font-size: 14px;
    min-height: 20px;
}

.success-message {
    color: #2ecc71;
    margin-top: 12px;
    text-align: center;
    font-size: 14px;
    min-height: 20px;
}

/* 页脚样式 */
.footer {
    position: absolute;
    bottom: 20px;
    width: 100%;
    text-align: center;
    z-index: 0;
}

.footer-content {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 15px 20px;
    border-radius: 8px;
    max-width: 400px;
    margin: 0 auto;
    display: inline-block;
}

.copyright, .beian, .additional-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    margin: 5px 0;
}

.beian a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: color 0.3s ease;
}

.beian a:hover {
    color: white;
    text-decoration: underline;
}

/* 背景装饰 */
.bg-decoration {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.bg-decoration::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('index.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
}

.bg-decoration span {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    animation: float 20s infinite ease-in-out;
    backdrop-filter: blur(5px);
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); opacity: 0.6; }
    50% { transform: translateY(-40px) rotate(180deg); opacity: 0.3; }
}

/* 响应式设计 */
@media (max-width: 480px) {
    .container {
        width: 90%;
        margin: 15px 5%;
    }
    
    .form-container {
        padding: 35px 30px;
    }
    
    h2 {
        font-size: 22px;
        margin-bottom: 0px;
    }
    
    .footer {
        position: relative;
        bottom: 0;
        margin-top: 20px;
    }
    
    .footer-content {
        width: 90%;
    }
}