:root{--bg:#f2f2ec;--bg-card:#fff;--accent:#c8d820;--accent-dk:#a8b81a;--dark:#1a1a1a;--border:#e0e0da;--text:#1a1a1a;--text2:#888;--text3:#bbb;--sidebar-w:220px}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--text);min-height:100vh}
/* Login */
.login-page{min-height:100vh;background:var(--dark);display:flex;align-items:center;justify-content:center}
.login-box{width:400px;padding:48px;text-align:center}
.login-logo{width:160px;height:160px;object-fit:contain;margin:0 auto 16px;display:block}
.login-title{font-size:20px;color:#fff;font-weight:700;letter-spacing:2px;margin-bottom:4px}
.login-sub{font-size:12px;color:#555;letter-spacing:3px;margin-bottom:32px}
.login-input{width:100%;background:#2a2a2a;border:1px solid #3a3a3a;border-radius:8px;padding:12px 16px;font-size:14px;color:#eee;margin-bottom:12px;outline:none}
.login-input:focus{border-color:var(--accent)}
.login-input::placeholder{color:#666}
.login-btn{width:100%;background:var(--accent);color:var(--dark);border:none;border-radius:8px;padding:13px;font-size:14px;font-weight:700;letter-spacing:1px;cursor:pointer;margin-top:8px}
.login-btn:hover{background:var(--accent-dk)}
.login-foot{font-size:11px;color:#444;margin-top:24px}
.flash{padding:10px 16px;border-radius:6px;font-size:13px;margin-bottom:16px}
.flash-error{background:#fee;color:#a33;border:1px solid #fcc}
.flash-success{background:#efe;color:#3a6;border:1px solid #cec}
/* Layout */
.layout{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar-w);background:var(--dark);padding:16px 12px;display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;overflow-y:auto;z-index:100}
.sb-brand{display:flex;align-items:center;gap:10px;padding:4px 8px;margin-bottom:20px}
.sb-logo-img{width:36px;height:36px;object-fit:contain}
.sb-brand-text{font-size:12px;color:#fff;font-weight:700;letter-spacing:1px}
.sb-sec{font-size:9px;color:#555;text-transform:uppercase;letter-spacing:1.5px;padding:0 12px;margin:16px 0 6px}
.sb-link{display:block;padding:8px 12px;font-size:12px;color:#999;text-decoration:none;border-radius:6px;margin-bottom:1px;transition:all .15s}
.sb-link:hover{color:#ccc;background:#252525}
.sb-link.active{background:var(--accent);color:var(--dark);font-weight:700}
.sb-link.disabled{color:#444;pointer-events:none;font-style:italic}
.sb-footer{margin-top:auto;border-top:1px solid #333;padding-top:12px}
.sb-user{display:flex;align-items:center;gap:8px;padding:4px 8px}
.sb-avatar{width:30px;height:30px;border-radius:50%;background:#333;display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--accent);font-weight:700;flex-shrink:0}
.sb-user-name{font-size:12px;color:#ccc}
.sb-user-role{font-size:10px;color:#666}
.sb-actions{display:flex;gap:12px;padding:6px 8px}
.sb-actions a{font-size:11px;color:#666;text-decoration:none}
.sb-actions a:hover{color:#999}
/* Main */
.main-wrap{margin-left:var(--sidebar-w);flex:1;display:flex;flex-direction:column;min-height:100vh;position:relative}
.topbar{background:rgba(255,255,255,.95);border-bottom:1px solid var(--border);padding:12px 28px;display:flex;justify-content:space-between;align-items:center;position:sticky;top:0;z-index:50}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px}
.bc-muted{color:#bbb}
.bc-sep{color:#ddd}
.bc-current{font-weight:600;color:var(--text)}
.topbar-right{display:flex;align-items:center;gap:18px}
.topbar-search,.topbar-notif{cursor:pointer;position:relative}
.notif-dot{position:absolute;top:-2px;right:-2px;width:8px;height:8px;border-radius:50%;background:#e24b4a;border:2px solid #fff}
.topbar-divider{width:1px;height:24px;background:var(--border)}
.topbar-user{display:flex;align-items:center;gap:10px}
.topbar-avatar{width:32px;height:32px;border-radius:50%;background:var(--dark);display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--accent);font-weight:700}
.topbar-uname{font-size:13px;font-weight:600}
.topbar-urole{font-size:11px;color:#999}
.main-content{padding:28px;position:relative;z-index:1}
.watermark{position:fixed;top:50%;left:calc(var(--sidebar-w) + (100% - var(--sidebar-w))/2);transform:translate(-50%,-50%);width:40%;max-width:500px;opacity:.05;pointer-events:none;z-index:0}
.page-title{font-size:22px;font-weight:700;margin-bottom:4px}
.page-sub{font-size:14px;color:var(--text2);margin-bottom:24px}
/* Stats */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-bottom:28px}
.stat{background:var(--bg-card);padding:20px;border-left:4px solid var(--accent)}
.stat:nth-child(even){border-left-color:var(--dark)}
.stat-label{font-size:13px;color:var(--text2);margin-bottom:4px}
.stat-val{font-size:28px;font-weight:700}
/* Cards */
.card{background:var(--bg-card);border:1px solid var(--border);padding:24px;margin-bottom:16px}
.card-title{font-size:16px;font-weight:700;margin-bottom:16px}
/* Table */
table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;padding:10px 12px;background:#f8f8f4;font-weight:600;color:var(--text2);border-bottom:1px solid var(--border)}
td{padding:10px 12px;border-bottom:1px solid #f0f0ec}
/* Forms */
.form-group{margin-bottom:14px}
.form-label{display:block;font-size:12px;font-weight:600;color:var(--text2);margin-bottom:4px}
.form-input{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:6px;font-size:13px;outline:none;background:#fff}
.form-input:focus{border-color:var(--accent)}
.form-select{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:6px;font-size:13px;outline:none;background:#fff}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-check{display:flex;align-items:center;gap:8px;font-size:13px;margin-bottom:6px}
.form-check input{accent-color:var(--accent)}
/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:6px;font-size:13px;font-weight:600;border:none;cursor:pointer;text-decoration:none;transition:all .15s}
.btn-primary{background:var(--accent);color:var(--dark)}
.btn-primary:hover{background:var(--accent-dk)}
.btn-dark{background:var(--dark);color:#fff}
.btn-dark:hover{background:#333}
.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text2)}
.btn-outline:hover{border-color:#bbb;color:var(--text)}
.btn-danger{background:#501313;color:#f09595}
.btn-danger:hover{background:#791f1f}
.btn-sm{padding:5px 10px;font-size:12px}
/* Badge */
.badge{display:inline-block;padding:2px 8px;border-radius:4px;font-size:11px;font-weight:600}
.badge-admin{background:var(--accent);color:var(--dark)}
.badge-user{background:#eee;color:#888}
.badge-active{background:#e8f0e0;color:#4a7a10}
.badge-inactive{background:#f5e0e0;color:#a33}
/* Level dot */
.level-dot{width:10px;height:10px;border-radius:2px;display:inline-block;vertical-align:middle;margin-right:4px}
/* Modal */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:200;align-items:center;justify-content:center}
.modal-overlay.open{display:flex}
.modal{background:#fff;border-radius:12px;padding:28px;width:500px;max-width:90vw;max-height:80vh;overflow-y:auto}
.modal-title{font-size:18px;font-weight:700;margin-bottom:20px}
.modal-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:20px}
/* Placeholder */
.placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:400px;color:var(--text2)}
.placeholder-icon{width:64px;height:64px;border-radius:12px;background:var(--accent);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;color:var(--dark);margin-bottom:16px}
.placeholder-title{font-size:20px;font-weight:700;color:var(--text);margin-bottom:8px}
/* Title autocomplete */
.title-wrap{position:relative}
.title-list{position:absolute;top:100%;left:0;right:0;background:#fff;border:1px solid var(--border);border-radius:0 0 6px 6px;max-height:200px;overflow-y:auto;z-index:10;display:none}
.title-list.show{display:block}
.title-item{padding:8px 12px;font-size:13px;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.title-item:hover{background:#f8f8f4}
.title-del{color:#ccc;font-size:11px;cursor:pointer;padding:2px 6px;border-radius:4px}
.title-del:hover{color:#e24b4a;background:#fee}

/* Mail */
.mail-list{display:flex;flex-direction:column}
.mail-item{display:grid;grid-template-columns:180px 1fr 120px;gap:8px;padding:12px 20px;border-bottom:1px solid var(--border);text-decoration:none;color:var(--text);transition:background .15s}
.mail-item:hover{background:var(--bg)}
.mail-unread{background:#fafaf4}
.mail-unread .mail-from,.mail-unread .mail-subject{font-weight:700}
.mail-from{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mail-subject{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mail-snippet{color:var(--text3);font-weight:400}
.mail-date{font-size:11px;color:var(--text3);text-align:right;white-space:nowrap}
.mail-body{font-size:14px;line-height:1.7;color:var(--text);overflow-wrap:break-word}
.mail-body img{max-width:100%}