.app-layout{display:flex;flex-direction:column;min-height:100vh;background-color:var(--color-bg)}.content-container{max-width:1480px;margin:0 auto;padding:24px 28px 48px;width:100%}.app-header{background-color:#fff;border-bottom:1px solid var(--color-border);box-shadow:0 1px 3px #0000000a;position:sticky;top:0;z-index:40}.header-inner{max-width:1480px;margin:0 auto;padding:14px 28px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}.brand-section{display:flex;align-items:center;gap:12px}.brand-icon{width:40px;height:40px;border-radius:var(--radius-md);background-color:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center}.brand-title{font-size:18px;font-weight:700;letter-spacing:-.02em;color:var(--color-text-main);line-height:1.2}.brand-subtitle{font-size:12px;color:var(--color-text-muted);font-weight:400}.assignment-toolbar{display:flex;align-items:center;gap:10px}.assignment-select-wrapper{display:flex;align-items:center;gap:8px;background-color:var(--color-surface-subtle);padding:5px 12px;border-radius:var(--radius-md);border:1px solid var(--color-border)}.assignment-label{font-size:12px;font-weight:600;color:var(--color-text-muted);white-space:nowrap}.assignment-select{border:none;background:transparent;font-size:14px;font-weight:600;color:var(--color-text-main);outline:none;cursor:pointer;padding-right:8px;min-width:180px}.action-btn{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;padding:8px 14px;border-radius:var(--radius-md);transition:all .15s ease;white-space:nowrap}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:var(--primary-hover);box-shadow:0 2px 6px #2563eb40}.btn-secondary{background-color:#fff;color:var(--color-text-main);border:1px solid var(--color-border)}.btn-secondary:hover{background-color:var(--color-surface-subtle);border-color:var(--color-border-hover)}.btn-toggle-view{background-color:#f8fafc;color:#334155;border:1px solid #cbd5e1}.btn-toggle-view:hover{background-color:#f1f5f9;border-color:#94a3b8}.btn-danger{color:#ef4444;border:1px solid #fecaca;background-color:#fef2f2}.btn-danger:hover{background-color:#fee2e2}.btn-danger-subtle{color:#dc2626;background:transparent;border:1px solid #fecaca}.btn-danger-subtle:hover{background-color:#fef2f2}.icon-btn{width:36px;height:36px;border-radius:var(--radius-md);display:inline-flex;align-items:center;justify-content:center}.header-actions{display:flex;align-items:center;gap:10px}.dropdown-wrapper{position:relative}.header-dropdown-menu{position:absolute;right:0;top:calc(100% + 6px);background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);min-width:170px;padding:6px;z-index:50;animation:fadeIn .15s ease}.dropdown-item{width:100%;display:flex;align-items:center;gap:8px;padding:8px 12px;font-size:13px;font-weight:500;color:var(--color-text-main);border-radius:var(--radius-sm);text-align:left}.dropdown-item:hover{background-color:var(--color-surface-subtle)}.stats-bar-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-bottom:24px}.stat-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:16px 20px;display:flex;align-items:center;gap:16px;box-shadow:var(--shadow-sm);transition:transform .15s ease,box-shadow .15s ease}.stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}.stat-icon-wrapper{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.icon-emerald{background-color:#d1fae5;color:#059669}.icon-blue{background-color:var(--gender-male-bg);color:var(--gender-male-text)}.icon-rose{background-color:var(--gender-female-bg);color:var(--gender-female-text)}.icon-amber{background-color:#fef3c7;color:#d97706}.icon-neutral{background-color:#f1f5f9;color:#475569}.gender-symbol{font-size:16px;font-weight:800}.stat-content{display:flex;flex-direction:column}.stat-label{font-size:12px;font-weight:600;color:var(--color-text-muted);margin-bottom:2px}.stat-value-group{display:flex;align-items:baseline;gap:6px}.stat-value{font-size:22px;font-weight:800;color:var(--color-text-main);letter-spacing:-.03em}.stat-total{font-size:13px;color:var(--color-text-muted);font-weight:500}.stat-badge{font-size:11px;font-weight:700;padding:2px 8px;border-radius:var(--radius-full)}.badge-rate{background-color:#d1fae5;color:#065f46}.stat-subtext{font-size:11px;color:var(--color-text-muted)}.text-amber-dark{color:#d97706}.workspace-grid{display:grid;grid-template-columns:1fr 380px;gap:24px;align-items:start}@media(max-width:1200px){.workspace-grid{grid-template-columns:1fr}}.matrix-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:24px 28px;box-shadow:var(--shadow-sm)}.matrix-header-bar{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:20px;gap:16px;flex-wrap:wrap}.view-mode-selector-bar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:14px;flex-wrap:wrap;padding-bottom:14px;border-bottom:1px solid var(--color-border)}.view-mode-tabs{display:inline-flex;background-color:var(--color-surface-subtle);padding:4px;border-radius:var(--radius-lg);border:1px solid var(--color-border);gap:4px}.view-mode-tab-btn{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;font-size:13px;font-weight:700;color:var(--color-text-muted);border-radius:var(--radius-md);transition:all .16s ease}.view-mode-tab-btn:hover{color:var(--color-text-main)}.view-mode-tab-btn.active{background-color:#fff;color:var(--primary);box-shadow:var(--shadow-sm);border:1px solid rgba(0,0,0,.04)}.view-mode-description{margin-bottom:16px}.matrix-title{font-size:17px;font-weight:700;color:var(--color-text-main);margin-bottom:4px}.matrix-subtitle{font-size:13px;color:var(--color-text-muted);line-height:1.5}.matrix-status-legend{display:flex;align-items:center;gap:16px;background-color:var(--color-surface-subtle);padding:6px 14px;border-radius:var(--radius-full);border:1px solid var(--color-border)}.legend-item{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:500;color:var(--color-text-muted)}.legend-dot{width:8px;height:8px;border-radius:50%}.dot-submitted{background-color:#10b981}.dot-unsubmitted{background-color:#cbd5e1}.dot-exempted{background-color:#f59e0b}.seat-matrix-container{display:flex;flex-direction:column;gap:14px}.podium-banner{display:flex;align-items:center;gap:16px;margin-bottom:10px}.podium-line{flex:1;height:1px;background:#cbd5e1}.podium-badge{background-color:#1e293b;color:#f8fafc;font-size:12px;font-weight:700;padding:6px 18px;border-radius:var(--radius-full);display:flex;align-items:center;gap:8px;letter-spacing:-.01em;box-shadow:0 2px 4px #00000014}.matrix-column-headers{display:grid;grid-template-columns:60px repeat(4,1fr);gap:14px;padding-left:0;align-items:center}.row-label-placeholder{width:60px}.column-header-cell{text-align:center}.col-num-badge{font-size:12px;font-weight:700;color:#475569;background-color:#f1f5f9;padding:4px 12px;border-radius:var(--radius-full);display:inline-block;border:1px solid #e2e8f0}.matrix-grid{display:flex;flex-direction:column;gap:14px}.matrix-row{display:grid;grid-template-columns:60px 1fr;gap:14px;align-items:center}.row-bundun-label{text-align:center}.bundun-title{font-size:13px;font-weight:800;color:#334155;background-color:#f8fafc;border:1px solid #cbd5e1;padding:6px 8px;border-radius:var(--radius-md);display:block}.row-seats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.number-order-container{display:flex;flex-direction:column;gap:16px}.number-columns-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}@media(max-width:900px){.number-columns-grid{grid-template-columns:1fr}}.number-column{background-color:#f8fafc;border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:16px;display:flex;flex-direction:column;gap:14px}.male-column{border-color:#bfdbfe;background-color:#f8fbff}.female-column{border-color:#fecdd3;background-color:#fffafb}.column-header-banner{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-radius:var(--radius-lg);border:1px solid transparent}.banner-male{background-color:#eff6ff;border-color:#bfdbfe}.banner-female{background-color:#fff1f2;border-color:#fecdd3}.banner-left{display:flex;align-items:center;gap:12px}.gender-badge-large{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800}.badge-male{background-color:#2563eb;color:#fff}.badge-female{background-color:#e11d48;color:#fff}.banner-text{display:flex;flex-direction:column}.column-title{font-size:15px;font-weight:700;color:var(--color-text-main);line-height:1.2}.column-desc{font-size:11px;color:var(--color-text-muted)}.banner-stat{display:flex;align-items:baseline;gap:8px}.stat-count{font-size:13px;color:var(--color-text-main)}.stat-count strong{font-size:16px;font-weight:800}.stat-rate{font-size:11px;font-weight:700;padding:2px 7px;border-radius:var(--radius-full);background-color:#fff;color:#0f172a;border:1px solid rgba(0,0,0,.08)}.student-cards-column{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}@media(max-width:640px){.student-cards-column{grid-template-columns:1fr}}.student-card{position:relative;background:#fff;border:2px solid var(--status-unsubmitted-border);border-radius:var(--radius-lg);padding:12px 14px;cursor:pointer;-webkit-user-select:none;user-select:none;display:flex;flex-direction:column;justify-content:space-between;min-height:96px;box-shadow:var(--shadow-sm);transition:all .18s cubic-bezier(.16,1,.3,1)}.student-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:var(--color-border-hover)}.student-card.is-unsubmitted{background-color:#fff;border-color:#e2e8f0}.student-card.is-unsubmitted:hover{border-color:#94a3b8}.student-card.is-submitted{background-color:var(--status-submitted-bg);border-color:var(--status-submitted-border);box-shadow:0 2px 8px #10b9811f}.student-card.is-submitted:hover{border-color:#059669;background-color:#e6fcf0}.student-card.is-exempted{background-color:var(--status-exempted-bg);border-color:var(--status-exempted-border)}.student-card.is-exempted:hover{border-color:#d97706}.student-card.empty-seat{background-color:#f8fafc;border:2px dashed #cbd5e1;box-shadow:none;cursor:default;align-items:center;justify-content:center}.empty-text{font-size:12px;color:#94a3b8;font-weight:500}.card-top{display:flex;align-items:center;justify-content:space-between;gap:4px}.student-num{font-size:11px;font-weight:700;color:var(--color-text-muted)}.card-top-right{display:flex;align-items:center;gap:4px}.gender-tag{font-size:11px;font-weight:700;padding:1px 7px;border-radius:var(--radius-full);display:inline-flex;align-items:center;justify-content:center;letter-spacing:-.02em}.gender-male{background-color:var(--gender-male-bg);color:var(--gender-male-text);border:1px solid var(--gender-male-border)}.gender-female{background-color:var(--gender-female-bg);color:var(--gender-female-text);border:1px solid var(--gender-female-border)}.tag-sm{font-size:10px;padding:0 5px}.card-more-btn{color:var(--color-text-dim);padding:2px;border-radius:4px;display:flex;align-items:center;justify-content:center}.card-more-btn:hover{color:var(--color-text-main);background-color:#0000000d}.menu-container{position:relative}.card-dropdown-menu{position:absolute;right:0;top:calc(100% + 4px);background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);min-width:150px;padding:4px;z-index:50;animation:fadeIn .1s ease}.card-center{margin:6px 0;text-align:left}.student-name{font-size:16px;font-weight:700;color:var(--color-text-main);letter-spacing:-.02em}.card-bottom{display:flex;align-items:center;justify-content:flex-start}.status-pill{font-size:11px;font-weight:700;display:inline-flex;align-items:center;gap:4px;border-radius:4px;padding:2px 6px}.status-pill-submitted{background-color:#10b981;color:#fff}.status-pill-unsubmitted{background-color:#f1f5f9;color:#64748b;font-weight:600}.status-pill-exempted{background-color:var(--status-exempted-badge);color:var(--status-exempted-text)}.classroom-back-label{margin-top:14px;text-align:center;font-size:12px;font-weight:600;color:#94a3b8;padding:8px 0;border-top:1px dashed #cbd5e1}.unsubmitted-sidebar{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-xl);display:flex;flex-direction:column;box-shadow:var(--shadow-sm);position:sticky;top:86px;max-height:calc(100vh - 110px)}.sidebar-header{padding:18px 20px 14px;border-bottom:1px solid var(--color-border)}.sidebar-title-row{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;margin-bottom:14px}.sidebar-title-wrap{display:flex;flex-direction:column;gap:4px}.sidebar-title{font-size:16px;font-weight:700;color:var(--color-text-main)}.assignment-badge{font-size:12px;color:var(--primary);font-weight:600;background-color:var(--primary-light);padding:2px 8px;border-radius:var(--radius-full);display:inline-block;max-width:200px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.copy-btn{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;padding:6px 12px;border-radius:var(--radius-md);background-color:#f1f5f9;color:#334155;border:1px solid #cbd5e1;transition:all .15s ease}.copy-btn:hover{background-color:#e2e8f0}.copy-btn.copied{background-color:#d1fae5;color:#065f46;border-color:#a7f3d0}.progress-section{margin-bottom:14px}.progress-text-row{display:flex;justify-content:space-between;align-items:center;font-size:12px;margin-bottom:6px}.progress-label{color:var(--color-text-muted);font-weight:500}.progress-ratio{color:var(--color-text-main)}.progress-track{height:8px;background-color:#e2e8f0;border-radius:var(--radius-full);overflow:hidden}.progress-fill{height:100%;background-color:var(--primary);border-radius:var(--radius-full);transition:width .3s cubic-bezier(.16,1,.3,1)}.progress-fill.complete{background-color:#10b981}.filter-tabs{display:flex;gap:6px;flex-wrap:wrap}.filter-tab{font-size:11px;font-weight:600;padding:4px 10px;border-radius:var(--radius-full);background-color:#f8fafc;color:#64748b;border:1px solid #e2e8f0}.filter-tab:hover{background-color:#f1f5f9}.filter-tab.active{background-color:#1e293b;color:#fff;border-color:#1e293b}.filter-tab.tab-exempted.active{background-color:#d97706;border-color:#d97706}.sidebar-body{padding:12px 14px;overflow-y:auto;flex:1}.unsubmitted-list{list-style:none;display:flex;flex-direction:column;gap:8px}.unsubmitted-item{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;background-color:#f8fafc;border:1px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;transition:all .15s ease}.unsubmitted-item:hover{background-color:#eff6ff;border-color:#93c5fd;transform:translate(2px)}.item-left{display:flex;align-items:center;gap:8px}.item-number{font-size:12px;font-weight:700;color:#64748b}.item-name{font-size:14px;font-weight:700;color:#0f172a}.item-seat-pos{font-size:11px;color:#94a3b8}.quick-submit-btn{font-size:11px;font-weight:700;color:#059669;background-color:#d1fae5;padding:4px 8px;border-radius:4px;opacity:.85}.unsubmitted-item:hover .quick-submit-btn{opacity:1;background-color:#10b981;color:#fff}.all-complete-banner{padding:40px 20px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:8px}.complete-icon{color:#10b981;margin-bottom:6px}.complete-title{font-size:16px;font-weight:700;color:#065f46}.complete-desc{font-size:12px;color:#64748b}.empty-list-notice{padding:30px;text-align:center;font-size:13px;color:#94a3b8}.sidebar-footer{padding:10px 16px;background-color:#f8fafc;border-top:1px solid var(--color-border);border-bottom-left-radius:var(--radius-xl);border-bottom-right-radius:var(--radius-xl)}.footer-tip{font-size:11px;color:#64748b}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background-color:#0f172a73;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:100;padding:20px;animation:fadeIn .15s ease}.modal-box{background:#fff;border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);width:100%;max-width:480px;display:flex;flex-direction:column;overflow:hidden;border:1px solid var(--color-border)}.modal-box.modal-lg{max-width:680px}.modal-header{padding:18px 24px;border-bottom:1px solid var(--color-border);display:flex;align-items:flex-start;justify-content:space-between}.modal-title{font-size:17px;font-weight:700;color:var(--color-text-main)}.modal-subtitle{font-size:12px;color:var(--color-text-muted);margin-top:2px}.modal-close-btn{color:var(--color-text-dim);padding:4px;border-radius:6px}.modal-close-btn:hover{background-color:var(--color-surface-subtle);color:var(--color-text-main)}.modal-form{padding:20px 24px;display:flex;flex-direction:column;gap:18px}.form-group{display:flex;flex-direction:column;gap:6px}.form-label{font-size:13px;font-weight:600;color:var(--color-text-main)}.form-input{border:1px solid var(--color-border);border-radius:var(--radius-md);padding:10px 14px;font-size:14px;color:var(--color-text-main);outline:none;transition:border-color .15s ease}.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1f}.quick-tags-section{display:flex;flex-direction:column;gap:8px}.quick-tags-label{font-size:12px;font-weight:600;color:var(--color-text-muted)}.quick-tags-list{display:flex;flex-wrap:wrap;gap:6px}.quick-tag-chip{font-size:12px;background-color:#f1f5f9;color:#334155;padding:4px 10px;border-radius:var(--radius-full);border:1px solid #e2e8f0}.quick-tag-chip:hover{background-color:#e2e8f0;color:#0f172a}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:8px}.modal-tab-bar{display:flex;border-bottom:1px solid var(--color-border);background-color:#f8fafc;padding:0 16px}.modal-tab-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 16px;font-size:13px;font-weight:600;color:var(--color-text-muted);border-bottom:2px solid transparent}.modal-tab-btn.active{color:var(--primary);border-bottom-color:var(--primary);background-color:#fff}.modal-content-scroll{max-height:440px;overflow-y:auto;padding:18px 24px}.student-edit-table{width:100%;border-collapse:collapse;font-size:13px}.student-edit-table th{text-align:left;padding:8px 12px;color:var(--color-text-muted);font-weight:600;border-bottom:2px solid #e2e8f0}.student-edit-table td{padding:8px 12px;border-bottom:1px solid #f1f5f9;vertical-align:middle}.table-input{width:100%;max-width:140px;padding:5px 8px;border:1px solid var(--color-border);border-radius:6px;font-size:13px;font-weight:600}.table-input:focus{border-color:var(--primary);outline:none}.gender-toggle-btn{font-size:12px;font-weight:700;padding:3px 10px;border-radius:var(--radius-full)}.gender-toggle-btn.btn-male{background-color:var(--gender-male-bg);color:var(--gender-male-text);border:1px solid var(--gender-male-border)}.gender-toggle-btn.btn-female{background-color:var(--gender-female-bg);color:var(--gender-female-text);border:1px solid var(--gender-female-border)}.batch-hint{font-size:12px;color:#475569;line-height:1.6;margin-bottom:12px;background-color:#f8fafc;padding:10px 14px;border-radius:8px;border:1px solid #e2e8f0}.batch-hint code{background:#e2e8f0;padding:1px 4px;border-radius:4px;font-family:monospace}.batch-textarea{width:100%;border:1px solid var(--color-border);border-radius:var(--radius-md);padding:10px 12px;font-size:13px;line-height:1.6;outline:none;resize:vertical}.batch-textarea:focus{border-color:var(--primary)}.modal-footer{padding:14px 24px;border-top:1px solid var(--color-border);display:flex;align-items:center;justify-content:space-between}.modal-footer-right{display:flex;gap:10px}.mt-2{margin-top:8px}.text-emerald{color:#059669}.text-amber{color:#d97706}.text-muted{color:#64748b}.font-bold{font-weight:700}.text-sm{font-size:12px}@keyframes fadeIn{0%{opacity:0;transform:scale(.98)}to{opacity:1;transform:scale(1)}}:root{--color-bg: #f8fafc;--color-surface: #ffffff;--color-surface-subtle: #f1f5f9;--color-border: #e2e8f0;--color-border-hover: #cbd5e1;--color-text-main: #0f172a;--color-text-muted: #64748b;--color-text-dim: #94a3b8;--status-submitted-bg: #ecfdf5;--status-submitted-border: #10b981;--status-submitted-text: #065f46;--status-submitted-badge: #d1fae5;--status-unsubmitted-bg: #ffffff;--status-unsubmitted-border: #e2e8f0;--status-unsubmitted-text: #1e293b;--status-exempted-bg: #fffbeb;--status-exempted-border: #f59e0b;--status-exempted-text: #92400e;--status-exempted-badge: #fef3c7;--gender-male-bg: #eff6ff;--gender-male-text: #1d4ed8;--gender-male-border: #bfdbfe;--gender-female-bg: #fff1f2;--gender-female-text: #be123c;--gender-female-border: #fecdd3;--primary: #2563eb;--primary-hover: #1d4ed8;--primary-light: #eff6ff;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .07), 0 2px 4px -2px rgb(0 0 0 / .05);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .08), 0 4px 6px -4px rgb(0 0 0 / .04);--shadow-card-hover: 0 8px 16px -2px rgb(0 0 0 / .08), 0 2px 6px -1px rgb(0 0 0 / .04);--font-sans: "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 18px;--radius-full: 9999px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--color-bg);color:var(--color-text-main);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}button{font-family:inherit;cursor:pointer;border:none;background:none;transition:all .15s ease}input,select,textarea{font-family:inherit}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}