:root{--primary-color: #0052cc;--primary-hover: #0747a6;--bg-color: #f4f5f7;--card-bg: #ffffff;--text-color: #172b4d;--text-muted: #5e6c84;--border-color: #dfe1e6;--success-color: #36b37e;--error-color: #ff5630;--shadow: 0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.24)}body.dark-theme{--bg-color: #1a1a1a;--card-bg: #2d2d2d;--text-color: #e0e0e0;--text-muted: #a0a0a0;--border-color: #404040;--shadow: 0 4px 6px rgba(0,0,0,.3);--primary-color: #4c9aff;--primary-hover: #82baff}body.dark-theme a{color:var(--primary-color)}body.dark-theme a:hover{color:var(--primary-hover)}body.dark-theme th{background-color:#363636}body.dark-theme .calendar-day.other-month{background-color:#252525;color:#666}body.dark-theme .calendar-day.today{background-color:#1e3a5f}body.dark-theme .day-hours.zero{background-color:#363636;color:#666}body.dark-theme input,body.dark-theme select{background-color:#363636;color:#e0e0e0}body.dark-theme .modal-card{background-color:#2d2d2d}body.dark-theme .tab-btn.active{color:#4c9aff;border-bottom-color:#4c9aff}body.dark-theme .stat-value{color:#4c9aff}body.dark-theme .day-hours{background-color:#1e3a5f;color:#4c9aff}body.dark-theme tr:hover{background-color:#363636}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji",Segoe UI Symbol;background-color:var(--bg-color);color:var(--text-color);line-height:1.5;min-height:100vh;display:flex;flex-direction:column}a{color:var(--primary-color);text-decoration:none}a:hover{color:var(--primary-hover);text-decoration:underline}header{background-color:var(--card-bg);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:100;padding:1rem 0}.header-container{max-width:1200px;margin:0 auto;padding:0 1rem;display:flex;justify-content:space-between;align-items:center}header h1{font-size:1.25rem;color:var(--primary-color);font-weight:700}.container{max-width:1200px;min-width:1200px;margin:2rem auto;padding:0 1rem;flex:1}.card{background:var(--card-bg);border-radius:8px;padding:1.5rem;margin-bottom:1.5rem;box-shadow:var(--shadow)}.card-title{font-size:1rem;font-weight:600;margin-bottom:1rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.filter-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group label{font-size:.875rem;font-weight:600}input,select{padding:.6rem;border:1px solid var(--border-color);border-radius:4px;font-size:.9rem;width:100%}input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 2px #0052cc33}.btn{padding:.6rem 1.2rem;border:none;border-radius:4px;cursor:pointer;font-weight:600;font-size:.9rem;transition:background .2s;display:inline-flex;align-items:center;justify-content:center;gap:.5rem}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:var(--primary-hover)}.btn-secondary{background-color:var(--border-color);color:var(--text-color)}.btn-secondary:hover{background-color:#c1c7d0}.btn-success{background-color:var(--success-color);color:#fff}.btn-success:hover{background-color:#2b8e65}.dashboard-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem;margin-bottom:1.5rem}.stat-card{background:var(--card-bg);padding:1.5rem;border-radius:8px;box-shadow:var(--shadow);text-align:center}.stat-value{font-size:2rem;font-weight:700;color:var(--primary-color);margin-bottom:.25rem}.stat-label{font-size:.875rem;color:var(--text-muted);font-weight:600}.table-container{overflow-x:auto;margin-top:1rem}table{width:100%;border-collapse:collapse;font-size:.9rem}th,td{padding:.75rem 1rem;text-align:left;border-bottom:1px solid var(--border-color)}th{background-color:#f4f5f7;font-weight:600;color:var(--text-muted);cursor:pointer;-webkit-user-select:none;user-select:none}th:hover{background-color:#ebecf0}tr:hover{background-color:#fafbfc}.tabs{display:flex;gap:1rem;margin-bottom:1rem;border-bottom:2px solid var(--border-color)}.tab-btn{padding:.75rem 1rem;cursor:pointer;font-weight:600;color:var(--text-muted);border-bottom:2px solid transparent;margin-bottom:-2px}.tab-btn.active{color:var(--primary-color);border-bottom-color:var(--primary-color)}.tab-content{display:none}.tab-content.active{display:block}#loading{display:none;text-align:center;padding:2rem}.spinner{border:4px solid rgba(0,0,0,.1);width:36px;height:36px;border-radius:50%;border-left-color:var(--primary-color);animation:spin 1s linear infinite;display:inline-block;margin-bottom:1rem}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.error-message{background-color:#ffebe6;color:var(--error-color);padding:1rem;border-radius:4px;margin-bottom:1rem;display:none;font-weight:600}.empty-message{text-align:center;padding:3rem;color:var(--text-muted);font-style:italic}.calendar-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.calendar-header h2{font-size:1.25rem;margin:0}.calendar-grid-header{display:grid;grid-template-columns:repeat(7,1fr);text-align:center;font-weight:600;color:var(--text-muted);margin-bottom:.5rem;padding-bottom:.5rem;border-bottom:1px solid var(--border-color)}.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:1px;background-color:var(--border-color);border:1px solid var(--border-color)}.calendar-day{background-color:var(--card-bg);min-height:100px;padding:.5rem;display:flex;flex-direction:column;gap:.25rem}.calendar-day.other-month{background-color:#f9fafb;color:#9ca3af}.calendar-day.today{background-color:#f0f7ff}.day-number{font-weight:600;font-size:.875rem}.day-hours{font-size:.75rem;padding:.25rem .5rem;border-radius:4px;background-color:#e1f0ff;color:var(--primary-color);font-weight:700;text-align:center;margin-top:auto}.day-hours.zero{background-color:#f3f4f6;color:#9ca3af;font-weight:400}.day-hours.full{background-color:#d1fae5;color:#065f46}.footer{text-align:center;padding:2rem;color:var(--text-muted);font-size:.9rem;border-top:1px solid var(--border-color);margin-top:2rem;background-color:var(--card-bg)}.footer p{display:flex;align-items:center;justify-content:center;gap:.5rem}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.modal-card{background-color:var(--card-bg);padding:2rem;border-radius:8px;box-shadow:0 10px 25px #0003;max-width:400px;width:90%}.btn-danger{background-color:#ef4444;color:#fff}.btn-danger:hover{background-color:#dc2626}@media(max-width:768px){.filter-grid{grid-template-columns:1fr}header{flex-direction:column;gap:1rem;text-align:center}}