:root{--primary: #6366f1;--primary-hover: #4f46e5;--bg-dark: #0f172a;--card-bg: rgba(30, 41, 59, .7);--glass-border: rgba(255, 255, 255, .1);--text-main: #f8fafc;--text-muted: #94a3b8;--accent: #f43f5e;--success: #10b981}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,system-ui,-apple-system,sans-serif;background-color:var(--bg-dark);color:var(--text-main);min-height:100vh}.glass-card{background:var(--card-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:16px;box-shadow:0 8px 32px #0000005e}.dashboard-container{display:flex;min-height:100vh}.sidebar{width:280px;padding:2rem;border-right:1px solid var(--glass-border);display:flex;flex-direction:column;gap:2rem}.main-content{flex:1;padding:2rem;overflow-y:auto}.header{margin-bottom:2rem}.header h1{font-size:2rem;font-weight:700;background:linear-gradient(135deg,#fff,#94a3b8);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.attendance-grid{width:100%;border-collapse:collapse;margin-top:1rem}.attendance-grid th,.attendance-grid td{padding:1rem;text-align:left;border-bottom:1px solid var(--glass-border)}.attendance-grid th{color:var(--text-muted);font-weight:600;font-size:.875rem;text-transform:uppercase;letter-spacing:.05em}.status-badge{padding:.25rem .75rem;border-radius:9999px;font-size:.75rem;font-weight:600}.status-present{background:#10b98133;color:var(--success)}.status-absent{background:#f43f5e33;color:var(--accent)}.loading-skeleton{background:linear-gradient(90deg,#1e293b 25%,#334155,#1e293b 75%);background-size:200% 100%;animation:skeleton-loading 1.5s infinite;border-radius:4px}@keyframes skeleton-loading{0%{background-position:200% 0}to{background-position:-200% 0}}.stats-dashboard{padding:1rem}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-bottom:2rem}.stat-card{padding:1.5rem;text-align:center}.stat-card h3{font-size:.9rem;color:#888;margin-bottom:.5rem}.stat-value{font-size:2.5rem;font-weight:700;color:#fff}.stat-subtext{font-size:.8rem;color:#666}.sync-section{text-align:center;margin-top:2rem}.sync-btn{background:var(--primary);color:#fff;border:none;padding:.8rem 2rem;font-size:1rem;border-radius:4px;cursor:pointer;position:relative;overflow:hidden;min-width:150px;font-weight:600;transition:background .2s}.sync-btn:hover:not(:disabled){background:var(--primary-hover)}.sync-btn:disabled{background:#333;cursor:not-allowed;color:#888}.sync-status{margin-top:1rem;color:#ccc;font-size:.9rem}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}.shimmer-text{position:relative;display:inline-block;color:#ffffff80}.shimmer-text:after{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);animation:shimmer 1.5s infinite}.shimmer-line{height:2.5rem;width:60%;margin:0 auto;background:#333;border-radius:4px;position:relative;overflow:hidden}.shimmer-line:after{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.05),transparent);animation:shimmer 1.5s infinite}.hover-card:hover{transform:translateY(-5px);background:#ffffff14;box-shadow:0 10px 20px #0003}