/* =============================================================================
 * 白鹭霜华 · 后台管理样式 (v2.0)
 * 独立文件便于浏览器缓存与维护；与前台 style.css 互不影响。
 * ========================================================================== */
*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#F3F1FF;--surface:#FFF;--t1:#1C1533;--t2:#544F6B;--t3:#9C98AD;--acc:#87CEEB;--acc-h:#5DADE2;--on:#FFF;--border:rgba(28,21,51,.09);--good:#0E7C3A;--warn:#B45309;--bad:#C62F1F;--radius:16px;--btnr:12px;--disp:'Fredoka','PingFang SC','Microsoft YaHei',sans-serif;--body:'Inter','PingFang SC','Microsoft YaHei',sans-serif}
html{scroll-behavior:smooth}body{font-family:var(--body);background:var(--bg);color:var(--t2);line-height:1.6;min-height:100vh}
a{color:var(--acc);text-decoration:none}button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea,select{font-family:inherit;font-size:14px;border:1.5px solid var(--border);border-radius:10px;padding:10px 14px;background:var(--surface);color:var(--t1);outline:none;transition:border .2s;width:100%}
input:focus,textarea:focus,select:focus{border-color:var(--acc);box-shadow:0 0 0 3px rgba(135,206,235,.15)}textarea{resize:vertical;min-height:80px}
.app{display:grid;grid-template-columns:240px 1fr;min-height:100vh}
@media(max-width:860px){.app{grid-template-columns:1fr}.sidebar{display:none}}
.sidebar{background:var(--surface);border-right:1px solid var(--border);padding:24px 0;position:sticky;top:0;height:100vh;overflow-y:auto}
.sidebar-brand{padding:0 20px 24px;display:flex;align-items:center;gap:10px;font-family:var(--disp);font-weight:700;font-size:18px;color:var(--t1);border-bottom:1px solid var(--border)}
.sidebar-brand .logo{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--acc),#9B6CFF);display:grid;place-items:center;color:#fff;font-size:12px}
.sidebar-nav{padding:16px 12px}
.sidebar-nav a{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:10px;font-size:14px;font-weight:600;color:var(--t2);transition:all .2s;margin-bottom:2px}
.sidebar-nav a:hover{background:var(--bg);color:var(--t1)}.sidebar-nav a.active{background:var(--acc);color:var(--on)}
.sidebar-nav a .icon{width:18px;text-align:center}
/* 侧边栏未读角标（入会申请待审核数量） */
.nav-badge{margin-left:auto;min-width:20px;padding:1px 7px;border-radius:999px;background:var(--bad);color:#fff;font-size:11px;font-weight:700;text-align:center;line-height:1.6}
.nav-badge[hidden]{display:none}
.sidebar-nav a.active .nav-badge{background:#fff;color:var(--acc)}
.main{padding:32px 36px}@media(max-width:860px){.main{padding:20px 16px}}
.page-title{font-family:var(--disp);font-size:28px;font-weight:700;color:var(--t1);margin-bottom:6px}
.page-desc{color:var(--t3);font-size:14px;margin-bottom:28px}
.card{background:var(--surface);border-radius:var(--radius);padding:24px;margin-bottom:20px;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.card-title{font-family:var(--disp);font-size:18px;font-weight:600;color:var(--t1);margin-bottom:16px;display:flex;align-items:center;gap:8px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.form-grid .full{grid-column:1/-1}
@media(max-width:640px){.form-grid{grid-template-columns:1fr}}
.form-group{display:flex;flex-direction:column;gap:6px}.form-group label{font-size:13px;font-weight:700;color:var(--t1)}
.color-input{display:flex;align-items:center;gap:10px}
.color-input input[type="color"]{width:40px;height:40px;border:none;border-radius:10px;cursor:pointer;padding:2px;background:none}
.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:var(--btnr);font-weight:700;font-size:14px;transition:all .2s}
.btn-primary{background:var(--acc);color:var(--on)}.btn-primary:hover{background:var(--acc-h);transform:translateY(-1px)}
.btn-danger{background:var(--bad);color:var(--on)}.btn-danger:hover{opacity:.85}
.btn-outline{border:1.5px solid var(--border);color:var(--t2)}.btn-outline:hover{border-color:var(--acc);color:var(--acc)}
.btn-sm{padding:6px 14px;font-size:12px;border-radius:8px}.btn-group{display:flex;gap:10px;flex-wrap:wrap}
.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse}
th{font-size:12px;font-weight:700;color:var(--t3);text-align:left;padding:10px 12px;border-bottom:2px solid var(--border);text-transform:uppercase;letter-spacing:.06em}
td{padding:12px;border-bottom:1px solid var(--border);font-size:14px;vertical-align:middle}tr:hover td{background:var(--bg)}
.tag{display:inline-block;font-size:11px;font-weight:600;background:var(--bg);color:var(--t2);padding:3px 10px;border-radius:999px;margin:2px}
.activity-bar{width:80px;height:6px;border-radius:3px;background:var(--bg);overflow:hidden;display:inline-block;vertical-align:middle;margin-left:6px}
.activity-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--acc),#9B6CFF);border-radius:3px}
.actions-cell{display:flex;gap:6px}
.thumb{width:60px;height:45px;object-fit:cover;border-radius:8px;background:var(--bg)}
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(20,14,45,.5);backdrop-filter:blur(4px);z-index:100;align-items:center;justify-content:center;padding:20px}
.modal-overlay.open{display:flex}
.modal-box{background:var(--surface);border-radius:20px;width:min(680px,100%);max-height:85vh;overflow-y:auto;padding:28px}
.modal-box .close{float:right;font-size:20px;color:var(--t3);cursor:pointer;width:32px;height:32px;border-radius:8px;display:grid;place-items:center}.modal-box .close:hover{background:var(--bg)}
.toast{position:fixed;top:20px;right:20px;z-index:200;padding:12px 20px;border-radius:12px;font-size:14px;font-weight:600;color:var(--on);background:var(--good);transform:translateX(120%);transition:transform .3s}
.toast.show{transform:none}.toast.error{background:var(--bad)}
.status-badge{display:inline-block;font-size:11px;font-weight:700;padding:3px 10px;border-radius:999px}
.status-pending{background:#FEF3C7;color:#92400E}.status-approved{background:#D1FAE5;color:#065F46}.status-rejected{background:#FEE2E2;color:#991B1B}
.backup-item{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border)}.backup-item:last-child{border-bottom:none}
.backup-name{font-weight:600;color:var(--t1);font-size:14px}.backup-size{font-size:12px;color:var(--t3)}
/* 皮肤上传区域 */
.skin-upload{display:flex;align-items:center;gap:16px;padding:16px;background:var(--bg);border-radius:12px;border:2px dashed var(--border);cursor:pointer;transition:all .2s}
.skin-upload:hover{border-color:var(--acc);background:#EDF5FF}
.skin-upload img{width:48px;height:48px;image-rendering:pixelated;border-radius:8px;background:#fff}
.skin-upload-text{flex:1}.skin-upload-text h4{font-size:14px;color:var(--t1);margin-bottom:2px}.skin-upload-text p{font-size:12px;color:var(--t3)}
.skin-upload input[type="file"]{display:none}
.skin-preview{display:flex;align-items:center;gap:12px;padding:12px;background:var(--bg);border-radius:12px;margin-top:8px}
.skin-preview img{width:48px;height:48px;image-rendering:pixelated;border-radius:8px;background:#fff}
.skin-preview .skin-info{flex:1;font-size:13px;color:var(--t2)}
/* 登录提示 */
.login-hint{position:fixed;inset:0;background:var(--bg);display:flex;align-items:center;justify-content:center;z-index:1000}
.login-hint-box{background:var(--surface);border-radius:20px;padding:40px;text-align:center;box-shadow:0 4px 24px rgba(0,0,0,.08)}
.login-hint-box h2{font-family:var(--disp);font-size:24px;color:var(--t1);margin-bottom:12px}
.login-hint-box p{color:var(--t3);margin-bottom:20px}
.login-hint-box .btn{min-width:160px;justify-content:center}
.tab-content{display:none}.tab-content.active{display:block}