:root{--bg: #0f172a;--bg-sidebar: #1e293b;--bg-card: #1e293b;--bg-hover: #334155;--bg-input: #0f172a;--text: #f1f5f9;--text-muted: #94a3b8;--text-dim: #64748b;--accent: #3b82f6;--accent-hover: #2563eb;--green: #22c55e;--green-bg: rgba(34, 197, 94, .1);--red: #ef4444;--red-bg: rgba(239, 68, 68, .1);--yellow: #eab308;--yellow-bg: rgba(234, 179, 8, .1);--border: #334155;--radius: 12px}body{background:var(--bg);color:var(--text)}.admin-layout{display:flex;min-height:100vh}.sidebar{width:220px;background:var(--bg-sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0}.sidebar-header{padding:20px;border-bottom:1px solid var(--border)}.sidebar-header h1{font-size:16px;font-weight:700}.sidebar-header .subtitle{font-size:11px;color:var(--text-muted);margin-top:2px}.sidebar-nav{flex:1;padding:8px}.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:8px;color:var(--text-muted);cursor:pointer;font-size:14px;border:none;background:none;width:100%;text-align:left;transition:all .15s}.nav-item:hover{background:var(--bg-hover);color:var(--text)}.nav-item.active{background:var(--accent);color:#fff}.nav-item .icon{font-size:16px;width:20px;text-align:center}.sidebar-footer{padding:12px;border-top:1px solid var(--border)}.logout-btn{width:100%;padding:8px;background:var(--bg-hover);border:1px solid var(--border);border-radius:8px;color:var(--text-muted);cursor:pointer;font-size:13px}.logout-btn:hover{color:var(--red);border-color:var(--red)}.main-panel{flex:1;margin-left:220px;padding:24px}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.page-header h2{font-size:22px;font-weight:700}.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}.stat-card{background:var(--bg-card);border:1px solid 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12px;font-size:12px;color:var(--text-muted)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:var(--bg-card);border-radius:var(--radius);padding:24px;max-width:500px;width:90%;border:1px solid var(--border)}.modal h3{margin-bottom:16px}.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--bg)}.login-box{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;width:360px}.login-box h2{text-align:center;margin-bottom:8px}.login-box .subtitle{text-align:center;color:var(--text-muted);font-size:14px;margin-bottom:24px}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:13px;color:var(--text-muted);margin-bottom:6px}.form-group input,.form-group select,.form-group textarea{width:100%;padding:10px 12px;background:var(--bg-input);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:14px;outline:none}.form-group input:focus{border-color:var(--accent)}.btn{padding:10px 16px;border:none;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all .15s}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-block{display:block;width:100%}.btn-sm{padding:6px 12px;font-size:13px}.btn-outline{background:none;border:1px solid var(--border);color:var(--text)}.btn-outline:hover{background:var(--bg-hover)}.error-msg{color:var(--red);font-size:13px;margin-bottom:12px;text-align:center}.shift-list{display:flex;flex-direction:column;gap:8px}.shift-item{display:flex;align-items:center;justify-content:space-between;padding:12px;background:var(--bg-hover);border-radius:8px;font-size:14px}.shift-item .time{color:var(--text-muted);font-size:13px}.shift-item 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