/* login.html 页面专用样式 */
:root{
    /* 亮色默认 */
    --bg-color:#ffffff;
    --text-main:#111827;
    --text-sub:#6b7280;
    --input-bg:#f3f5f7;
    --logo-color:#b0e270;
    --border-color:#e5e7eb;
}
.dark-mode{
    /* 深色主题（截图样式） */
    --bg-color:#0f1115;
    --text-main:#e5e7eb;
    --text-sub:#9ca3af;
    --input-bg:#1f242b;
    --logo-color:#b9e792;
    --border-color:#2c313a;
}
*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:-apple-system,BlinkMacSystemFont,"PingFang TC","Segoe UI",Roboto,sans-serif;
    transition: background 0.3s, color 0.3s;
}
html,body{
    width:100%;
    height:100%;
    background:var(--bg-color);
    color:var(--text-main);
}
/* 右上角語言+主題 */
.top-header{
    position:fixed;
    top:20px;
    right:20px;
    display:flex;
    gap:12px;
}
.lang-icon,.theme-icon{
    width:40px;
    height:40px;
    border-radius:50%;
    border:1px solid var(--border-color);
    display:flex;
    align-items:center;
    justify-content:center;
    cursor:pointer;
    font-size:18px;
    color:var(--text-sub);
    background:transparent;
}
/* 全屏垂直居中 */
.wrap-full{
    width:100%;
    height:100%;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    padding:0 24px;
}
.logo-block{
    text-align:center;
    margin-bottom:48px;
}
.logo-main{
    font-size:22px;
    color:var(--logo-color);
    letter-spacing:3px;
    margin-bottom:10px;
}
.logo-sub{
    font-size:16px;
    color:var(--text-sub);
}
.form-container{
    width:100%;
    max-width:1200px;
}
.input-group{
    margin-bottom:22px;
}
.input-label{
    font-size:15px;
    color:var(--text-sub);
    margin-bottom:8px;
}
.input-field{
    width:100%;
    background:var(--input-bg);
    border:none;
    border-radius:16px;
    padding:18px 22px;
    font-size:18px;
    outline:none;
    color:var(--text-main);
}
.row-link{
    display:flex;
    justify-content:space-between;
    margin:24px 0 30px;
}
.link-text{
    color:#97d61f;
    font-size:16px;
    text-decoration:none;
}
.btn-main{
    width:100%;
    background:#97d61f;
    color:#fff;
    border:none;
    border-radius:16px;
    padding:18px 0;
    font-size:18px;
    font-weight:600;
    cursor:pointer;
}
.bottom-desc{
    text-align:center;
    margin-top:30px;
    font-size:15px;
}