@import "https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,400;0,700;0,900;1,400;1,700;1,900&family=Inter:wght@400;500;600;700;800&display=swap";@import "https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard-dynamic-subset.min.css";:root{--color-bg-primary:#0b0f19;--color-bg-secondary:#111827;--color-bg-tertiary:#1f2937;--color-text-primary:#f3f4f6;--color-text-muted:#9ca3af;--color-text-light:#6b7280;--color-text-inverted:#0b0f19;--color-accent:#10b981;--color-accent-dark:#059669;--color-accent-light:#10b9811a;--color-divider:#374151;--color-error:#ef4444;--color-error-light:#ef44441a;--color-success:#10b981;--color-success-light:#10b9811a;--font-display:"Montserrat", "Pretendard", sans-serif;--font-sans:"Inter", "Pretendard", sans-serif;--shadow-sm:0 1px 2px 0 #00000080;--shadow-md:0 4px 6px -1px #00000080, 0 2px 4px -2px #00000080;--shadow-lg:0 10px 15px -3px #0009, 0 4px 6px -4px #0009;--border-radius:12px;--border-radius-sm:8px;--transition-fast:all .2s cubic-bezier(.4, 0, .2, 1);--transition-normal:all .3s cubic-bezier(.4, 0, .2, 1);--header-height:72px}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--color-bg-primary);color:var(--color-text-primary);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--color-bg-primary)}::-webkit-scrollbar-thumb{background:var(--color-divider);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--color-accent)}.app-shell{height:100vh;display:flex;overflow:hidden}.auth-container{background:radial-gradient(circle at top right, #10b98126, transparent 40%), radial-gradient(circle at bottom left, #111827cc, 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span{color:var(--color-accent)}.auth-subtitle{color:var(--color-text-muted);text-align:center;margin-bottom:32px;font-size:14px}.form-group{flex-direction:column;gap:8px;margin-bottom:20px;display:flex}.form-label{color:var(--color-text-primary);letter-spacing:.05em;text-transform:uppercase;font-size:13px;font-weight:600}.form-input{border:1px solid var(--color-divider);color:var(--color-text-primary);font-family:var(--font-sans);transition:var(--transition-fast);background-color:#0b0f19cc;border-radius:8px;padding:12px 16px;font-size:14px}.form-input:focus{border-color:var(--color-accent);outline:none;box-shadow:0 0 0 3px #10b98133}.form-select{border:1px solid var(--color-divider);color:var(--color-text-primary);font-family:var(--font-sans);transition:var(--transition-fast);cursor:pointer;appearance:none;background-color:#0b0f19cc;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%239ca3af'%3E%3Cpath 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#10b98133}.form-error{color:var(--color-error);align-items:center;gap:4px;margin-top:4px;font-size:12px;display:flex}.auth-button{background-color:var(--color-accent);width:100%;color:var(--color-text-inverted);cursor:pointer;transition:var(--transition-fast);border:none;border-radius:8px;justify-content:center;align-items:center;gap:8px;margin-top:10px;padding:14px;font-size:15px;font-weight:700;display:flex}.auth-button:hover:not(:disabled){background-color:var(--color-accent-dark);transform:translateY(-1px)}.auth-button:active:not(:disabled){transform:translateY(0)}.auth-button:disabled{opacity:.6;cursor:not-allowed}.auth-footer{text-align:center;color:var(--color-text-muted);margin-top:24px;font-size:13px}.auth-link{color:var(--color-accent);transition:var(--transition-fast);cursor:pointer;margin-left:6px;font-weight:600;text-decoration:none}.auth-link:hover{color:var(--color-accent-dark);text-decoration:underline}.alert-message{border-radius:8px;align-items:flex-start;gap:8px;margin-bottom:24px;padding:12px 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16px;font-size:14px;font-weight:600;display:flex}.btn-secondary:hover:not(:disabled){border-color:var(--color-accent);background-color:#ffffff0d}.btn-secondary:disabled{opacity:.5;cursor:not-allowed}.validation-msg{margin-top:4px;font-size:12px;display:block}.validation-msg.success{color:var(--color-accent)}.validation-msg.error{color:var(--color-error)}.sidebar{background-color:var(--color-bg-secondary);border-right:1px solid var(--color-divider);z-index:10;flex-direction:column;flex-shrink:0;width:260px;height:100%;display:flex}.sidebar-brand{height:var(--header-height);box-sizing:border-box;font-family:var(--font-display);letter-spacing:-.05em;color:var(--color-text-primary);border-bottom:1px solid var(--color-divider);align-items:center;gap:8px;padding:0 20px;font-size:22px;font-style:italic;font-weight:800;display:flex}.sidebar-brand span{color:var(--color-accent)}.sidebar-menu{flex-direction:column;gap:8px;padding:24px 16px;list-style:none;display:flex}.menu-item{color:var(--color-text-muted);border-radius:var(--border-radius-sm);transition:var(--transition-fast);cursor:pointer;align-items:center;gap:12px;padding:12px 16px;font-size:14px;font-weight:600;text-decoration:none;display:flex}.menu-item:hover{color:var(--color-text-primary);background-color:#ffffff08}.menu-item.active{color:var(--color-text-inverted);background-color:var(--color-accent)}.sidebar-footer{border-top:1px solid var(--color-divider);margin-top:auto;padding:24px}.user-info-box{border:1px solid var(--color-divider);color:var(--color-text-muted);background-color:#ffffff05;border-radius:8px;margin-bottom:12px;padding:12px;font-size:12px}.user-info-box .name{color:var(--color-text-primary);margin-bottom:4px;font-size:14px;font-weight:700}.btn-logout{color:#fca5a5;cursor:pointer;width:100%;transition:var(--transition-fast);background-color:#0000;border:1px solid #ef444433;border-radius:8px;justify-content:center;align-items:center;gap:6px;padding:8px 12px;font-size:12px;font-weight:700;display:flex}.btn-logout:hover{background-color:var(--color-error-light);border-color:var(--color-error);color:#fff}.main-content{flex-direction:column;flex:1;min-width:0;height:100%;display:flex;overflow:hidden}.main-header{height:var(--header-height);box-sizing:border-box;background-color:var(--color-bg-secondary);border-bottom:1px solid var(--color-divider);justify-content:space-between;align-items:center;padding:0 32px;display:flex}.header-title{color:var(--color-text-primary);font-size:18px;font-weight:700}.page-container{flex:1;padding:32px;overflow-y:auto}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px;margin-bottom:32px;display:grid}.stat-card{background-color:var(--color-bg-secondary);border:1px solid var(--color-divider);border-radius:var(--border-radius);box-shadow:var(--shadow-sm);transition:var(--transition-normal);padding:24px;position:relative;overflow:hidden}.stat-card:hover{box-shadow:var(--shadow-md);border-color:#10b9814d;transform:translateY(-2px)}.stat-card:before{content:"";background-color:var(--color-divider);width:4px;height:100%;position:absolute;top:0;left:0}.stat-card.accent:before{background-color:var(--color-accent)}.stat-card.danger:before{background-color:var(--color-error)}.stat-title{color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:12px;font-size:13px;font-weight:600}.stat-value{color:var(--color-text-primary);font-size:28px;font-weight:800;font-family:var(--font-display);margin-bottom:6px}.stat-desc{color:var(--color-text-light);font-size:12px}.table-controls{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-bottom:20px;display:flex}.controls-left{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.controls-right{align-items:center;gap:12px;display:flex}.search-input-wrapper{width:280px;position:relative}.search-input-wrapper 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0;border-radius:8px;justify-content:center;align-items:center;display:flex}.btn-icon:hover{color:var(--color-text-primary);border-color:var(--color-text-muted);background-color:#ffffff05}.btn-icon.danger:hover{color:var(--color-error);background-color:var(--color-error-light);border-color:#ef444466}.switch{cursor:pointer;width:44px;height:24px;display:inline-block;position:relative}.switch input{opacity:0;width:0;height:0}.slider{background-color:var(--color-bg-tertiary);border:1px solid var(--color-divider);border-radius:24px;transition:all .3s;position:absolute;inset:0}.slider:before{content:"";background-color:var(--color-text-muted);border-radius:50%;width:16px;height:16px;transition:all .3s;position:absolute;bottom:3px;left:3px}input:checked+.slider{background-color:var(--color-accent-light);border-color:var(--color-accent)}input:checked+.slider:before{background-color:var(--color-accent);transform:translate(20px)}.modal-backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:100;background-color:#000000b3;justify-content:center;align-items:center;width:100vw;height:100vh;padding:24px;display:flex;position:fixed;top:0;left:0}.modal-content{background-color:var(--color-bg-secondary);border:1px solid var(--color-divider);box-shadow:var(--shadow-lg);border-radius:16px;flex-direction:column;width:100%;max-width:640px;max-height:90vh;animation:.3s cubic-bezier(.16,1,.3,1) modalFadeIn;display:flex;overflow:hidden}@keyframes modalFadeIn{0%{opacity:0;transform:scale(.95)translateY(10px)}to{opacity:1;transform:scale(1)translateY(0)}}.modal-header{border-bottom:1px solid var(--color-divider);justify-content:space-between;align-items:center;padding:20px 24px;display:flex}.modal-title{color:var(--color-text-primary);font-size:18px;font-weight:700}.modal-body{flex:1;padding:24px;overflow-y:auto}.modal-footer{border-top:1px solid var(--color-divider);background-color:#0000001a;justify-content:flex-end;align-items:center;gap:12px;padding:16px 24px;display:flex}.detail-grid{grid-template-columns:1fr 1fr;gap:20px;display:grid}@media (width<=580px){.detail-grid{grid-template-columns:1fr}}.detail-row{flex-direction:column;gap:6px;display:flex}.detail-row.full-width{grid-column:1/-1}.detail-label{color:var(--color-text-light);text-transform:uppercase;letter-spacing:.05em;font-size:11px;font-weight:600}.detail-val{color:var(--color-text-primary);border:1px solid var(--color-divider);background-color:#ffffff03;border-radius:8px;padding:10px 14px;font-size:14px;font-weight:500}.joins-chips{flex-wrap:wrap;gap:8px;display:flex}.join-chip{background-color:var(--color-bg-tertiary);border:1px solid var(--color-divider);border-radius:6px;flex-direction:column;gap:2px;padding:6px 12px;font-size:13px;display:flex}.join-chip .category-title{color:var(--color-text-primary);font-weight:700}.join-chip .grade-title{color:var(--color-text-muted);font-size:11px}.media-preview-container{aspect-ratio:16/9;border:1px solid var(--color-divider);background-color:#000;border-radius:8px;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.media-preview-container video,.media-preview-container img{object-fit:contain;width:100%;height:100%}.no-data{text-align:center;color:var(--color-text-light);padding:48px;font-size:14px}.joins-selector-box{border:1px solid var(--color-divider);background-color:#0000000d;border-radius:8px;padding:16px}.selected-joins-list{flex-direction:column;gap:8px;margin-top:12px;display:flex}.selected-join-row{background-color:var(--color-bg-tertiary);border:1px solid var(--color-divider);border-radius:6px;justify-content:space-between;align-items:center;padding:8px 12px;font-size:13px;display:flex}.selected-join-row button{color:var(--color-error);cursor:pointer;background:0 0;border:none;padding:4px}.signup-form-grid{flex-direction:column;gap:16px;margin-bottom:20px;display:flex}.pc-placeholder{display:none}@media (width>=768px){.signup-form-grid{grid-template-columns:1fr 1fr;gap:16px 24px;display:grid}.signup-form-grid .span-2{grid-column:span 2}.pc-placeholder{display:block}}.mobile-header{background-color:var(--color-bg-secondary);border-bottom:1px solid var(--color-divider);z-index:30;justify-content:space-between;align-items:center;height:64px;padding:0 16px;display:none;position:sticky;top:0}.btn-hamburger{color:var(--color-text-primary);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;padding:4px;display:flex}.mobile-brand{align-items:center;gap:8px;display:flex}.mobile-brand img{background-color:#fffffff2;border-radius:4px;height:20px;padding:2px 4px}.mobile-brand span{color:var(--color-text-primary);font-size:13px;font-weight:800}.sidebar-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:40;background-color:#0009;width:100vw;height:100vh;display:none;position:fixed;top:0;left:0}.sidebar-overlay.open{display:block}@media (width<=768px){.app-shell{flex-direction:column;height:auto;min-height:100vh;overflow:visible}.mobile-header{display:flex}.sidebar{z-index:50;width:260px;height:100vh;transition:transform .3s cubic-bezier(.16,1,.3,1);position:fixed;top:0;left:0;transform:translate(-100%);box-shadow:10px 0 30px #00000080}.sidebar.open{transform:translate(0)}.main-content{height:auto;overflow:visible}.main-header{display:none}.page-container{padding:16px 12px;overflow-y:visible}.table-controls{flex-direction:column;align-items:stretch;gap:12px}.controls-left{flex-direction:column;align-items:stretch;gap:10px}.controls-left select,.search-input-wrapper{width:100%!important}.controls-right{grid-template-columns:1fr 1fr;gap:8px;width:100%;display:grid}.controls-right button{justify-content:center;width:100%!important}.mobile-reg-card{background-color:var(--color-bg-secondary);border:1px solid var(--color-divider);border-radius:var(--border-radius-sm);box-shadow:var(--shadow-sm);transition:var(--transition-fast);flex-direction:column;gap:12px;margin-bottom:12px;padding:16px;display:flex}.mobile-reg-card:hover{border-color:#10b98133}.mobile-reg-card .card-row{justify-content:space-between;align-items:center;display:flex}.mobile-reg-card .card-info-item{flex-direction:column;gap:4px;display:flex}.mobile-reg-card .info-label{color:var(--color-text-light);text-transform:uppercase;letter-spacing:.05em;font-size:11px}.mobile-reg-card .info-value{color:var(--color-text-primary);font-size:14px;font-weight:500}.mobile-reg-card .card-divider{background-color:var(--color-divider);width:100%;height:1px}.mobile-reg-card .card-footer{justify-content:space-between;align-items:center;padding-top:4px;display:flex}.modal-backdrop{padding:8px!important}.modal-content{border-radius:8px;max-height:95vh}.modal-header{padding:16px 20px}.modal-body{padding:16px 20px;gap:16px!important}.modal-footer{padding:12px 20px}.joins-selector-box{padding:10px!important}.hide-on-mobile{display:none!important}}