:root {
    --primary-color: #8a2be2;
    --secondary-color: #4b0082;
    --accent-color: #9370db;
    --text-color: #f8f9fa;
    --card-bg: rgba(25, 25, 35, 0.8);
    --input-bg: rgba(30, 30, 40, 0.6);
    --success-color: #6ab04c;
    --error-color: #eb4d4b;
}

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

body {
    font-family: 'Quicksand', sans-serif;
    color: var(--text-color);
    background-color: #121212;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* 星空背景 */
.stars, .twinkling {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.stars {
    background: #000 url('https://i.imgur.com/YKY28eT.png') repeat top center;
    z-index: -2;
}

.twinkling {
    background: transparent url('https://i.imgur.com/XYMF4ca.png') repeat top center;
    z-index: -1;
    animation: move-twink-back 200s linear infinite;
}

@keyframes move-twink-back {
    from {background-position: 0 0;}
    to {background-position: -10000px 5000px;}
}

/* 容器样式 */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* 头部 */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.title-container h1 {
    font-size: 2.2rem;
    background: linear-gradient(45deg, #ff9a9e, #fad0c4, #a18cd1, #fbc2eb);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 0.5rem;
}

.title-container p {
    font-size: 1.1rem;
    color: var(--accent-color);
}

.user-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn-logout {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-logout:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* 隐私横幅 */
.privacy-banner {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: rgba(106, 176, 76, 0.15);
    border-left: 4px solid var(--success-color);
    padding: 0.8rem 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.privacy-banner i {
    color: var(--success-color);
    font-size: 1.2rem;
}

/* 卡片 */
.card {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

/* 表单样式 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-group label i {
    color: var(--accent-color);
}

input, textarea, select {
    width: 100%;
    padding: 1rem;
    background-color: var(--input-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--text-color);
    font-family: 'Quicksand', sans-serif;
    font-size: 1rem;
    transition: all 0.3s;
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(147, 112, 219, 0.2);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%239370db' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: calc(100% - 1rem) center;
    padding-right: 2.5rem;
}

/* 按钮 */
.btn-convert, .btn-copy {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 50px;
    font-family: 'Quicksand', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(138, 43, 226, 0.3);
}

.btn-convert {
    width: 100%;
}

.btn-convert:hover, .btn-copy:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(138, 43, 226, 0.4);
}

.btn-convert:active, .btn-copy:active {
    transform: translateY(1px);
}

/* 结果卡片 */
.result-card h2 {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.result-card h2 i {
    color: var(--success-color);
}

.result-container {
    position: relative;
    margin-bottom: 1.5rem;
}

#convertResult {
    padding-right: 4rem;
}

.btn-copy {
    position: absolute;
    right: 0.5rem;
    top: 0.5rem;
    padding: 0.5rem;
    font-size: 0.9rem;
    min-width: auto;
}

.tip {
    text-align: center;
    margin-top: 1rem;
}

.tip p {
    color: var(--accent-color);
    font-size: 1.1rem;
}

.privacy-info {
    background-color: rgba(106, 176, 76, 0.1);
    border-radius: 8px;
    padding: 0.8rem 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.privacy-info i {
    color: var(--success-color);
}

/* 页脚 */
footer {
    text-align: center;
    margin-top: 4rem;
    padding: 1.5rem 0;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* 提示框 */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.75rem 1.5rem;
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    border-radius: 50px;
    font-size: 0.9rem;
    opacity: 0;
    transition: opacity 0.3s;
    z-index: 1000;
}

.toast.show {
    opacity: 1;
}

/* 登录页面样式 */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 1rem;
}

.login-card {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.login-card h1 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(45deg, #ff9a9e, #fad0c4, #a18cd1, #fbc2eb);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.login-card h3 {
    color: var(--accent-color);
    margin-bottom: 2rem;
    font-weight: 500;
}

.alert {
    padding: 0.75rem;
    margin-bottom: 1.5rem;
    border-radius: 8px;
    font-size: 0.9rem;
}

.alert-error {
    background-color: rgba(235, 77, 75, 0.2);
    color: #ff6b6b;
    border: 1px solid rgba(235, 77, 75, 0.3);
}

.btn-login {
    width: 100%;
    padding: 0.75rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 8px;
    font-family: 'Quicksand', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(138, 43, 226, 0.3);
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(138, 43, 226, 0.4);
}

/* 响应式设计 */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .user-actions {
        margin-top: 1rem;
        width: 100%;
        justify-content: space-between;
    }
    
    .title-container h1 {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .card {
        padding: 1.5rem;
    }
    
    .btn-convert {
        padding: 0.75rem 1.5rem;
    }
}
/* 在现有样式文件末尾添加 */

.admin-actions {
    display: flex;
    justify-content: center;
    margin: 1rem 0;
}

.btn-admin {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 0.6rem 1.2rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.btn-admin:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* 统计信息样式 */
.statistics {
    background-color: rgba(25, 25, 35, 0.6);
    border-radius: 8px;
    padding: 0.75rem;
    margin-top: 1rem;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
}

.statistics h4 {
    margin: 0 0 0.5rem 0;
    color: var(--accent-color);
}

.statistics ul {
    margin: 0;
    padding-left: 1.5rem;
}

.statistics li {
    margin-bottom: 0.25rem;
}