/* Mini Home Lab — 深色高科技玻璃拟态风格（统一全站） */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: linear-gradient(135deg, #0f2027 0%, #203a43 50%, #2c5364 100%);
    min-height: 100vh;
    color: #e8f0f2;
    background-attachment: fixed;
}
a { color: #4fc3f7; text-decoration: none; }

/* 顶部导航（深色） */
.topbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 28px; height: 64px;
    background: rgba(15, 32, 39, 0.75);
    box-shadow: 0 4px 18px rgba(0,0,0,0.35);
    position: sticky; top: 0; z-index: 100;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.topbar .logo { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.topbar .logo .icon { font-size: 26px; line-height: 1; }
.topbar .logo .name { font-size: 17px; font-weight: 600; color: #e8f0f2; line-height: 1.2; }
.topbar .logo .sub { font-size: 11px; color: #9fb6c0; line-height: 1.2; }
.topbar .right { display: flex; align-items: center; gap: 14px; }
.topbar .user { font-size: 13px; color: #c5d5db; }
.topbar .btn-link {
    font-size: 13px; color: #4fc3f7; text-decoration: none; cursor: pointer;
    padding: 6px 12px; border-radius: 8px;
    background: rgba(79, 195, 247, 0.12);
    border: 1px solid rgba(79, 195, 247, 0.3);
    transition: all .2s;
}
.topbar .btn-link:hover { background: rgba(79, 195, 247, 0.25); transform: translateY(-1px); }

/* 主容器 */
.container { max-width: 1100px; margin: 40px auto; padding: 0 20px; }

/* 玻璃拟态卡片（主站欢迎页风格） */
.card {
    background: rgba(255,255,255,0.06);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
    transition: all .25s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 26px 70px rgba(0,0,0,0.5); }

/* 登录页（高科技欢迎页）— 卡片页面正中央 */
.login-wrap {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.login-card { padding: 44px 40px; text-align: center; max-width: 420px; width: 100%; }
.login-card h1 { font-size: 30px; font-weight: 600; color: #e8f0f2; margin-bottom: 8px; letter-spacing: 1px; }
.login-card .subtitle { font-size: 14px; color: #9fb6c0; margin-bottom: 10px; }
.login-card .line { width: 48px; height: 2px; background: #4fc3f7; margin: 0 auto 26px; border-radius: 2px; }
.form-item { margin-bottom: 18px; text-align: left; }
.form-item label { display: block; font-size: 13px; color: #9fb6c0; margin-bottom: 6px; }
.form-item input {
    width: 100%; height: 42px;
    border: 1px solid rgba(255,255,255,0.15); border-radius: 10px;
    padding: 0 14px; font-size: 14px; outline: none; transition: all .2s;
    background: rgba(255,255,255,0.07); color: #e8f0f2;
}
.form-item input::placeholder { color: rgba(159,182,192,0.6); }
.form-item input:focus {
    border-color: #4fc3f7;
    box-shadow: 0 0 0 3px rgba(79,195,247,0.2);
    background: rgba(255,255,255,0.1);
}
.captcha-row { display: flex; gap: 10px; }
.captcha-row input { flex: 1; }
.captcha-row img { height: 42px; border-radius: 10px; cursor: pointer; border: 1px solid rgba(255,255,255,0.15); }
.btn {
    width: 100%; height: 44px; border: none; border-radius: 10px; font-size: 15px; font-weight: 600;
    color: #0f2027;
    background: linear-gradient(135deg, #4fc3f7 0%, #81d4fa 100%);
    cursor: pointer; transition: all .2s;
    box-shadow: 0 6px 16px rgba(79,195,247,0.35), inset 0 1px 0 rgba(255,255,255,0.4);
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(79,195,247,0.5); }
.btn:active { transform: translateY(0); }
.msg { font-size: 13px; margin-bottom: 14px; padding: 10px 14px; border-radius: 8px; text-align: left; }
.msg.error { background: rgba(217,48,37,0.15); color: #ff8a80; border: 1px solid rgba(217,48,37,0.3); }
.msg.ok { background: rgba(19,115,51,0.15); color: #69f0ae; border: 1px solid rgba(19,115,51,0.3); }
/* ICP 备案（原首页 badge 风格，明显可见） */
.icp-badge {
    display: inline-block;
    margin-top: 24px;
    padding: 6px 16px;
    font-size: 13px;
    color: #4fc3f7;
    border: 1px solid rgba(79,195,247,0.5);
    border-radius: 20px;
    background: rgba(79,195,247,0.1);
    text-decoration: none;
    transition: all .2s;
}
.icp-badge:hover { background: rgba(79,195,247,0.25); border-color: #4fc3f7; }
.footer-note { text-align: center; font-size: 13px; color: rgba(159,182,192,0.85); margin-top: 18px; }

/* 首页模块选择 */
.welcome { font-size: 26px; font-weight: 600; margin-bottom: 8px; letter-spacing: 1px; }
.welcome-sub { font-size: 14px; color: #9fb6c0; margin-bottom: 8px; }
.welcome-line { width: 48px; height: 2px; background: #4fc3f7; margin: 0 0 30px; border-radius: 2px; }
.module-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 22px; }
.module-card { padding: 32px 26px; text-decoration: none; color: inherit; display: block; cursor: pointer; }
.module-card .m-icon { font-size: 44px; margin-bottom: 16px; display: block; filter: drop-shadow(0 4px 12px rgba(79,195,247,0.35)); }
.module-card .m-name { font-size: 18px; font-weight: 600; color: #e8f0f2; margin-bottom: 8px; }
.module-card .m-desc { font-size: 13px; color: #9fb6c0; line-height: 1.6; }
.module-card .m-enter { display: inline-block; margin-top: 14px; font-size: 13px; color: #4fc3f7; opacity: 0; transition: opacity .2s; }
.module-card:hover .m-enter { opacity: 1; }

/* 表格（深色） */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { background: rgba(79,195,247,0.1); color: #81d4fa; text-align: left; padding: 12px 14px; font-weight: 600; white-space: nowrap; }
td { padding: 11px 14px; border-top: 1px solid rgba(255,255,255,0.08); vertical-align: middle; color: #c5d5db; }
tr:hover td { background: rgba(255,255,255,0.04); }
.badge { display: inline-block; padding: 2px 10px; border-radius: 20px; font-size: 12px; }
.badge.admin { background: rgba(255,183,77,0.15); color: #ffcc80; }
.badge.user { background: rgba(79,195,247,0.15); color: #81d4fa; }
.badge.on { background: rgba(105,240,174,0.15); color: #69f0ae; }
.badge.off { background: rgba(255,255,255,0.1); color: #9fb6c0; }
.btn-sm {
    display: inline-block; padding: 5px 12px; border-radius: 8px; font-size: 12px;
    border: 1px solid rgba(79,195,247,0.4); background: rgba(79,195,247,0.1); color: #81d4fa;
    cursor: pointer; text-decoration: none; transition: all .2s; margin: 2px;
}
.btn-sm:hover { background: rgba(79,195,247,0.25); border-color: #4fc3f7; }
.btn-sm.danger { color: #ff8a80; border-color: rgba(217,48,37,0.4); background: rgba(217,48,37,0.1); }
.btn-sm.danger:hover { background: rgba(217,48,37,0.25); border-color: #ff8a80; }

/* 页面标题 */
.page-title { font-size: 22px; font-weight: 600; margin-bottom: 20px; letter-spacing: 1px; }
.page-title .back { font-size: 14px; color: #4fc3f7; text-decoration: none; margin-right: 10px; font-weight: 400; }

/* 用户管理 */
.user-form { padding: 26px; margin-bottom: 22px; }
.user-form h3 { font-size: 16px; margin-bottom: 16px; color: #e8f0f2; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
.form-grid .form-item { margin-bottom: 0; }
.checkbox-group { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 14px; }
.checkbox-group label { font-size: 13px; color: #9fb6c0; display: flex; align-items: center; gap: 5px; cursor: pointer; }

/* 模块页面 iframe */
.module-frame { width: 100%; height: calc(100vh - 150px); min-height: 600px; border: none; border-radius: 16px; }