/* 动态背景元素 */
.bg-bubbles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
}

.bg-bubbles li {
    position: absolute;
    list-style: none;
    display: block;
    bottom: -150px;
    background: rgba(231, 75, 59, 0.15);
    animation: bubble 25s infinite;
    border-radius: 50%;
}

.bg-bubbles li:nth-child(1) {
    width: 40px;
    height: 40px;
    left: 10%;
    animation-delay: 0s;
}

.bg-bubbles li:nth-child(2) {
    width: 60px;
    height: 60px;
    left: 20%;
    animation-delay: 2s;
    animation-duration: 17s;
}

.bg-bubbles li:nth-child(3) {
    width: 30px;
    height: 30px;
    left: 30%;
    animation-delay: 4s;
}

.bg-bubbles li:nth-child(4) {
    width: 80px;
    height: 80px;
    left: 40%;
    animation-delay: 0s;
    animation-duration: 22s;
}

.bg-bubbles li:nth-child(5) {
    width: 50px;
    height: 50px;
    left: 50%;
    animation-delay: 0s;
}

.bg-bubbles li:nth-child(6) {
    width: 60px;
    height: 60px;
    left: 60%;
    animation-delay: 3s;
}

.bg-bubbles li:nth-child(7) {
    width: 90px;
    height: 90px;
    left: 70%;
    animation-delay: 7s;
}

.bg-bubbles li:nth-child(8) {
    width: 45px;
    height: 45px;
    left: 80%;
    animation-delay: 15s;
    animation-duration: 20s;
}

.bg-bubbles li:nth-child(9) {
    width: 70px;
    height: 70px;
    left: 90%;
    animation-delay: 2s;
    animation-duration: 17s;
}

@keyframes bubble {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.5;
        border-radius: 50%;
    }
    100% {
        transform: translateY(-1000px) rotate(720deg);
        opacity: 0;
        border-radius: 30%;
    }
}

/* 登录卡片容器 */
.login-container {
    margin: 100px auto;
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 520px;
    padding: 40px 30px;
    background: linear-gradient(135deg, #FF6B81, #ff1569);
    backdrop-filter: blur(12px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
    overflow: hidden;
}

/* 装饰性元素 */
.decoration {
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(45deg, #3344d6, #0074ff00 70%);
    top: -100px;
    right: -100px;
    z-index: -1;
}

.decoration:nth-child(2) {
    width: 300px;
    height: 300px;
    background: linear-gradient(45deg, #3344d6, #0074ff00 70%);
    bottom: -150px;
    left: -150px;
    top: auto;
    right: auto;
}

/* 标题样式 */
.login-header {
    text-align: center;
    margin-bottom: 35px;
}

.login-header h1 {
    color: #fff;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.login-header p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 16px;
}

/* 输入框组 */
.input-group {
    position: relative;
    margin-bottom: 30px;
}

/* 独特的输入框设计 */
.input-field {
    width: 100%;
    padding: 15px;
    background: rgba(255, 255, 255, 0.08);
    border: 2px solid transparent;
    border-radius: 15px;
    outline: none;
    font-size: 16px;
    color: white;
    transition: all 0.4s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.input-field:focus {
    border-color: #33d6c1;
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(59, 202, 231, 0.3);
}

.input-field::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

/* 输入框图标 */
.input-icon {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: rgba(255, 255, 255, 0.7);
    font-size: 20px;
    transition: color 0.3s ease;
}

.input-field:focus + .input-icon {
    color: #33d6c1;
}

/* 记住我选项 */
.remember-me {
    display: flex;
    align-items: center;
    margin-bottom: 25px;
}

.remember-me input {
    width: 18px;
    height: 18px;
    margin-right: 10px;
    accent-color: #33d6c1;
}

.remember-me label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    cursor: pointer;
}

/* 登录按钮 - 独特设计 */
.login-btn {
    width: 100%;
    padding: 18px;
    background: linear-gradient(45deg, #33d6c1, #27c6b2 );
    border: none;
    border-radius: 15px;
    color: white;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s ease;
    box-shadow: 0 7px 15px rgb(59 231 211 / 40%);
    letter-spacing: 1px;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
}

.login-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 20px rgba(231, 75, 59, 0.6);
}

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

.login-btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: rgba(255, 255, 255, 0.1);
    transform: rotate(30deg);
    transition: all 0.6s ease;
}

.login-btn:hover::after {
    transform: rotate(30deg) translate(20%, 20%);
}

/* 底部链接 */
.login-footer {
    display: flex;
    justify-content: space-between;
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.login-footer a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.login-footer a:hover {
    color: #33d6c1;
}

/* 响应式调整 */
@media (max-width: 480px) {
    .login-container {
        padding: 30px 20px;
    }
    
    .login-header h1 {
        font-size: 28px;
    }
    
    .input-field {
        padding: 15px 15px 15px 50px;
    }
    
    .input-icon {
        left: 15px;
        font-size: 18px;
    }
    
    .login-btn {
        padding: 16px;
        font-size: 16px;
    }
}