*{margin:0;padding:0;box-sizing:border-box}:root{--ink: #0f0e0d;--paper: #f5f0e8;--accent: #c8370a;--accent2: #1a4a8a;--gold: #c9940a;--muted: #7a7060;--border: #d4c9b0;--card-bg: #faf7f2;--sidebar-w: 220px;--sans: "Noto Sans KR", sans-serif;--serif: "Noto Serif KR", serif;--mono: "JetBrains Mono", monospace;font-family:var(--sans);font-size:14px}[data-theme=dark]{--ink: #f0ece4;--paper: #131210;--accent: #e04515;--accent2: #4a7ac8;--gold: #d4a020;--muted: #8a8070;--border: #2e2a22;--card-bg: #1c1915}body{background:var(--paper);color:var(--ink);line-height:1.6;min-height:100vh;font-family:var(--sans)}.app-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-w);background:var(--paper);border-right:2px solid var(--ink);display:flex;flex-direction:column;position:fixed;height:100vh;overflow-y:auto;z-index:100}.sidebar-logo{padding:20px 20px 16px;border-bottom:2px solid var(--ink);position:relative;overflow:hidden}.sidebar-logo:before{content:"";position:absolute;top:0;left:0;right:0;height:5px;background:repeating-linear-gradient(90deg,var(--accent) 0,var(--accent) 40px,var(--ink) 40px,var(--ink) 42px)}.sidebar-logo h1{font-family:var(--serif);font-size:15px;font-weight:900;color:var(--ink);letter-spacing:-.3px;line-height:1.4;margin-top:8px}.sidebar-logo h1 span{color:var(--accent)}.sidebar-logo p{font-family:var(--sans);font-size:11px;color:var(--muted);margin-top:4px}.sidebar-nav{flex:1;padding:6px 0}.nav-item{display:flex;align-items:center;gap:10px;padding:12px 18px;text-decoration:none;color:var(--muted);font-family:var(--sans);font-size:13px;font-weight:500;border-bottom:1px solid var(--border);transition:background .1s,color .1s;cursor:pointer}.nav-item:hover{background:var(--card-bg);color:var(--ink)}.nav-item.active{background:var(--ink);color:var(--paper)}.nav-icon{font-size:15px;width:18px;text-align:center}.sidebar-footer{border-top:2px solid var(--ink)}.theme-btn{width:100%;display:flex;align-items:center;gap:10px;padding:12px 18px;background:none;border:none;color:var(--muted);font-family:var(--sans);font-size:13px;font-weight:500;cursor:pointer;transition:background .1s,color .1s}.theme-btn:hover{background:var(--card-bg);color:var(--ink)}.main-content{margin-left:var(--sidebar-w);flex:1;padding:2rem 3rem;min-height:100vh}.page-header{margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:2px solid var(--ink)}.page-header-row{display:flex;justify-content:space-between;align-items:baseline}.page-header h2{font-family:var(--serif);font-size:1.9rem;font-weight:900;letter-spacing:-.03em}.page-header-tag{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;background:var(--accent);color:#fff;padding:2px 8px;margin-bottom:6px;display:inline-block}.page-header p{font-family:var(--sans);font-size:13px;color:var(--muted);margin-top:4px}.card{border:2px solid var(--ink);background:var(--card-bg);padding:1.2rem 1.5rem;position:relative;transition:transform .15s,box-shadow .15s}.card:hover{transform:translateY(-2px);box-shadow:4px 4px 0 var(--ink)}.card-sm{padding:.9rem 1.2rem}.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:2px solid var(--ink);margin-bottom:1.5rem}.stat-card{padding:1.2rem 1rem;border-right:1px solid var(--ink);text-align:center;background:var(--card-bg)}.stat-card:last-child{border-right:none}.stat-icon{font-size:18px;margin-bottom:6px}.stat-label{font-family:var(--sans);font-size:11px;color:var(--muted);margin-bottom:4px}.stat-value{font-family:var(--serif);font-size:2rem;font-weight:900;color:var(--accent);line-height:1;letter-spacing:-.03em}.stat-sub{font-family:var(--sans);font-size:11px;color:var(--muted);margin-top:4px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:1rem}.grid-4{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:1rem}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;font-family:var(--sans);font-size:13px;font-weight:600;border:2px solid var(--ink);background:var(--card-bg);color:var(--ink);cursor:pointer;transition:background .1s,color .1s}.btn:hover,.btn-primary{background:var(--ink);color:var(--paper)}.btn-primary:hover{background:var(--accent);border-color:var(--accent);color:#fff}.btn-secondary{background:var(--card-bg);color:var(--ink)}.btn-danger{background:var(--card-bg);color:var(--accent);border-color:var(--accent)}.btn-danger:hover{background:var(--accent);color:#fff}.btn-sm{padding:5px 11px;font-size:12px}.btn-icon{padding:4px 7px;background:none;border:1px solid var(--border);color:var(--muted);cursor:pointer;font-size:13px;transition:all .1s;line-height:1}.btn-icon:hover{border-color:var(--ink);color:var(--ink)}.form-group{display:flex;flex-direction:column;gap:5px}.form-label{font-family:var(--sans);font-size:12px;font-weight:700;color:var(--muted)}.form-input,.form-select,.form-textarea{padding:9px 11px;border:2px solid var(--border);background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:14px;outline:none;width:100%;transition:border-color .1s}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--ink)}.form-textarea{resize:vertical;min-height:80px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}.form-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:4px}.modal-overlay{position:fixed;inset:0;background:#0f0e0d8c;display:flex;align-items:center;justify-content:center;z-index:999;padding:20px}.modal{background:var(--paper);border:2px solid var(--ink);padding:1.5rem;width:100%;max-width:540px;max-height:90vh;overflow-y:auto;box-shadow:8px 8px 0 var(--ink)}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.2rem;padding-bottom:.8rem;border-bottom:2px solid var(--ink)}.modal-header h3{font-family:var(--serif);font-size:1.15rem;font-weight:900}.modal-body{display:flex;flex-direction:column;gap:12px}.badge{display:inline-flex;align-items:center;padding:2px 8px;font-family:var(--sans);font-size:11px;font-weight:700;border:1px solid;white-space:nowrap}.badge-green{border-color:#2e7d52;color:#2e7d52;background:#f0faf4}.badge-yellow{border-color:var(--gold);color:var(--gold);background:#fffbee}.badge-red{border-color:var(--accent);color:var(--accent);background:#fff5f2}.badge-blue{border-color:var(--accent2);color:var(--accent2);background:#f0f5ff}.badge-gray{border-color:var(--border);color:var(--muted);background:var(--card-bg)}.badge-accent{border-color:var(--accent);color:var(--accent);background:#fff5f2}.badge-orange{border-color:#c06010;color:#c06010;background:#fff8ee}[data-theme=dark] .badge-green{background:#0a2010}[data-theme=dark] .badge-yellow{background:#1e1800}[data-theme=dark] .badge-red{background:#200a05}[data-theme=dark] .badge-blue{background:#05101e}[data-theme=dark] .badge-gray{background:var(--card-bg)}[data-theme=dark] .badge-accent{background:#200a05}[data-theme=dark] .badge-orange{background:#1a0f00}.list-item{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--border)}.list-item:last-child{border-bottom:none}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.section-title{font-family:var(--serif);font-size:1rem;font-weight:700}.empty-state{text-align:center;padding:2.5rem 1rem;color:var(--muted)}.empty-state .icon{font-size:36px;margin-bottom:10px}.empty-state p{font-family:var(--sans);font-size:13px}.tabs{display:flex;gap:0;border:2px solid var(--ink);margin-bottom:1.2rem;overflow:hidden}.tab{flex:1;padding:8px;background:var(--card-bg);border:none;border-right:1px solid var(--ink);cursor:pointer;font-family:var(--sans);font-size:12px;font-weight:600;color:var(--muted);transition:all .1s}.tab:last-child{border-right:none}.tab:hover{color:var(--ink)}.tab.active{background:var(--ink);color:var(--paper)}.checkbox-item{display:flex;align-items:flex-start;gap:10px;padding:5px 0;cursor:pointer}.checkbox-item input[type=checkbox]{display:none}.check-box{width:16px;height:16px;min-width:16px;border:2px solid var(--ink);margin-top:2px;display:flex;align-items:center;justify-content:center;transition:all .1s;font-size:10px}.checkbox-item.checked .check-box{background:var(--ink);color:var(--paper)}.checkbox-item.checked .check-box:after{content:"✓"}.checkbox-item label{font-size:14px;cursor:pointer;line-height:1.5;font-family:var(--sans)}.checkbox-item.checked label{text-decoration:line-through;color:var(--muted)}.subject-card{border:2px solid var(--ink);background:var(--card-bg);overflow:hidden}.subject-card-header{padding:14px 18px;display:flex;align-items:center;justify-content:space-between;cursor:pointer;transition:background .1s}.subject-card-header:hover{background:var(--paper)}.subject-card-body{border-top:2px solid var(--border);padding:1.2rem 1.5rem}.progress-bar{height:4px;background:var(--border);margin-bottom:4px}.progress-fill{height:100%;background:var(--accent);transition:width .3s}.item-actions{display:flex;gap:4px;opacity:0;transition:opacity .1s}.list-item:hover .item-actions,.subject-card-header:hover .item-actions,.card-sm:hover .item-actions{opacity:1}.attendance-grid{display:flex;flex-wrap:wrap;gap:5px}.attendance-dot{width:34px;height:34px;border:2px solid var(--border);display:flex;align-items:center;justify-content:center;font-family:var(--sans);font-size:11px;font-weight:700;cursor:pointer;-webkit-user-select:none;user-select:none;transition:all .1s}.attendance-dot.present{border-color:#2e7d52;background:#e8f5ee;color:#2e7d52}.attendance-dot.late{border-color:var(--gold);background:#fefbee;color:var(--gold)}.attendance-dot.absent{border-color:var(--accent);background:#fff0ed;color:var(--accent)}.attendance-dot.none{color:var(--muted)}[data-theme=dark] .attendance-dot.present{background:#0a2010}[data-theme=dark] .attendance-dot.late{background:#1e1800}[data-theme=dark] .attendance-dot.absent{background:#200a05}.filter-bar{display:flex;gap:0;border:2px solid var(--ink);overflow:hidden;margin-bottom:1.2rem;flex-wrap:wrap}.filter-btn{padding:8px 14px;background:var(--card-bg);border:none;border-right:1px solid var(--ink);font-family:var(--sans);font-size:12px;font-weight:600;color:var(--muted);cursor:pointer;transition:all .1s}.filter-btn:last-child{border-right:none}.filter-btn:hover{color:var(--ink);background:var(--paper)}.filter-btn.active{background:var(--ink);color:var(--paper)}.timeline{border:2px solid var(--ink);background:var(--card-bg);margin-bottom:1.5rem}.timeline-header{background:var(--ink);color:var(--paper);padding:.65rem 1.2rem;font-family:var(--sans);font-size:12px;font-weight:700;display:flex;justify-content:space-between}.timeline-row{display:grid;grid-template-columns:80px 1fr;border-bottom:1px solid var(--border)}.timeline-row:last-child{border-bottom:none}.timeline-week{padding:.7rem .8rem;font-family:var(--mono);font-size:11px;color:var(--muted);border-right:1px solid var(--border);display:flex;align-items:center}.timeline-items{padding:.7rem 1rem;display:flex;flex-wrap:wrap;gap:.4rem;align-items:center}.titem{padding:2px 8px;font-family:var(--sans);font-size:12px;border:1px solid}.titem.red{border-color:var(--accent);color:var(--accent)}.titem.blue{border-color:var(--accent2);color:var(--accent2)}.titem.gold{border-color:var(--gold);color:var(--gold)}.titem.dark{background:var(--ink);color:var(--paper);border-color:var(--ink)}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border)}.mobile-topbar{display:none;position:fixed;top:0;left:0;right:0;height:52px;background:var(--paper);border-bottom:2px solid var(--ink);align-items:center;justify-content:space-between;padding:0 16px;z-index:200}.mobile-topbar-title{font-family:var(--serif);font-size:15px;font-weight:900}.mobile-topbar-title span{color:var(--accent)}.mobile-nav{display:none;position:fixed;bottom:0;left:0;right:0;height:60px;background:var(--paper);border-top:2px solid var(--ink);z-index:200}.mobile-nav-inner{display:flex;height:100%}.mobile-nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;text-decoration:none;color:var(--muted);font-family:var(--sans);font-size:10px;font-weight:600;border-right:1px solid var(--border);transition:background .1s,color .1s}.mobile-nav-item:last-child{border-right:none}.mobile-nav-item .nav-icon{font-size:18px;width:auto}.mobile-nav-item.active{background:var(--ink);color:var(--paper)}.mobile-nav-item:not(.active):hover{background:var(--card-bg);color:var(--ink)}@media(max-width:1100px){.stats-row{grid-template-columns:1fr 1fr}.stats-row .stat-card:nth-child(2){border-right:none}.stats-row .stat-card:nth-child(3){border-right:1px solid var(--ink)}}@media(max-width:768px){:root{--sidebar-w: 0px}.sidebar{display:none}.mobile-topbar{display:flex}.mobile-nav{display:block}.main-content{padding:4.5rem 1rem 5rem}.grid-2,.grid-3,.grid-4,.form-row{grid-template-columns:1fr}.stats-row{grid-template-columns:1fr 1fr}}