:root{--bg-primary: #0a0e1a;--bg-secondary: #111827;--bg-card: rgba(17, 24, 39, .7);--bg-card-hover: rgba(17, 24, 39, .9);--bg-glass: rgba(255, 255, 255, .05);--bg-glass-border: rgba(255, 255, 255, .08);--bg-sidebar: rgba(10, 14, 26, .95);--accent-start: #7c3aed;--accent-end: #2563eb;--accent-gradient: linear-gradient(135deg, var(--accent-start), var(--accent-end));--accent-glow: rgba(124, 58, 237, .3);--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-muted: #64748b;--text-accent: #a78bfa;--success: #10b981;--warning: #f59e0b;--danger: #ef4444;--info: #3b82f6;--border-color: rgba(255, 255, 255, .06);--border-active: rgba(124, 58, 237, .4);--sidebar-width: 260px;--header-height: 64px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 20px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--shadow-glow: 0 0 30px var(--accent-glow);--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .4s cubic-bezier(.4, 0, .2, 1)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth}body{font-family:Pretendard Variable,Pretendard,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}body:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background:radial-gradient(ellipse 80% 50% at 50% -20%,rgba(124,58,237,.12),transparent),radial-gradient(ellipse 60% 40% at 80% 50%,rgba(37,99,235,.08),transparent);pointer-events:none;z-index:0}#root{position:relative;z-index:1;min-height:100vh}a{color:var(--text-accent);text-decoration:none;transition:color 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var(--bg-glass-border);border-radius:var(--radius-lg)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.6rem 1.25rem;border-radius:var(--radius-md);font-size:.875rem;font-weight:500;transition:all var(--transition-fast);white-space:nowrap}.btn-primary{background:var(--accent-gradient);color:#fff;box-shadow:var(--shadow-sm)}.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-glow)}.btn-secondary{background:var(--bg-glass);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{border-color:var(--border-active);background:#7c3aed1a}.btn-danger{background:#ef444426;color:var(--danger);border:1px solid rgba(239,68,68,.2)}.btn-danger:hover{background:#ef444440}.btn-sm{padding:.4rem .85rem;font-size:.8rem}.spinner{width:40px;height:40px;border:3px solid var(--border-color);border-top-color:var(--accent-start);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-screen{display:flex;align-items:center;justify-content:center;min-height:100vh;flex-direction:column;gap:1rem}.loading-screen span{color:var(--text-secondary);font-size:.9rem}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .4s ease-out forwards}.badge{display:inline-flex;align-items:center;padding:.2rem .6rem;border-radius:9999px;font-size:.7rem;font-weight:600;letter-spacing:.02em}.badge-admin{background:#7c3aed26;color:var(--accent-start)}.badge-student{background:#3b82f626;color:var(--info)}.badge-success{background:#10b98126;color:var(--success)}.badge-warning{background:#f59e0b26;color:var(--warning)}.badge-danger{background:#ef444426;color:var(--danger)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:3rem 1.5rem;text-align:center;color:var(--text-muted)}.empty-state .icon{font-size:3rem;margin-bottom:1rem;opacity:.5}.empty-state h3{font-size:1.1rem;color:var(--text-secondary);margin-bottom:.5rem}.empty-state p{font-size:.85rem;max-width:320px}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem;flex-wrap:wrap;gap:1rem}.page-header h1{font-size:1.5rem;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.page-header p{color:var(--text-secondary);font-size:.85rem;margin-top:.25rem}.fc{--fc-border-color: var(--border-color);--fc-button-bg-color: var(--bg-glass);--fc-button-border-color: var(--border-color);--fc-button-text-color: var(--text-primary);--fc-button-hover-bg-color: rgba(124, 58, 237, .15);--fc-button-hover-border-color: var(--border-active);--fc-button-active-bg-color: var(--accent-start);--fc-button-active-border-color: var(--accent-start);--fc-today-bg-color: rgba(124, 58, 237, .08);--fc-event-bg-color: var(--accent-start);--fc-event-border-color: var(--accent-start);--fc-page-bg-color: transparent;--fc-neutral-bg-color: var(--bg-glass);--fc-list-event-hover-bg-color: rgba(124, 58, 237, .1);font-size:.85rem}.fc .fc-col-header-cell-cushion,.fc .fc-daygrid-day-number{color:var(--text-secondary)}.fc .fc-toolbar-title{font-size:1.1rem!important;font-weight:600}.data-table{width:100%;border-collapse:collapse}.data-table thead th{padding:.75rem 1rem;text-align:left;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);border-bottom:1px solid var(--border-color)}.data-table tbody td{padding:.75rem 1rem;font-size:.875rem;border-bottom:1px solid var(--border-color);color:var(--text-secondary)}.data-table tbody tr{transition:background var(--transition-fast)}.data-table tbody tr:hover{background:#7c3aed0a}.data-table tbody tr:last-child 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var(--transition-fast)}.modal-close:hover{background:#ef444426;color:var(--danger)}.modal-actions{display:flex;gap:.75rem;justify-content:flex-end;margin-top:1.5rem}.form-group{margin-bottom:1rem}.form-group label{display:block;font-size:.8rem;font-weight:500;color:var(--text-secondary);margin-bottom:.35rem}.form-group input,.form-group select,.form-group textarea{width:100%}.form-group textarea{min-height:80px;resize:vertical}.form-error{color:var(--danger);font-size:.78rem;margin-top:.25rem}@media(max-width:768px){.page-header{flex-direction:column;align-items:flex-start}}.layout{display:flex;min-height:100vh}.sidebar{position:fixed;top:0;left:0;width:var(--sidebar-width);height:100vh;background:var(--bg-sidebar);border-right:1px solid var(--border-color);display:flex;flex-direction:column;z-index:100;transition:transform var(--transition-base)}.sidebar-logo{padding:1.25rem 1.5rem;border-bottom:1px solid var(--border-color);display:flex;align-items:center;gap:.75rem}.sidebar-logo .logo-icon{width:36px;height:36px;background:var(--accent-gradient);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:#fff;flex-shrink:0}.sidebar-logo h2{font-size:1rem;font-weight:700;color:var(--text-primary)}.sidebar-logo span{font-size:.7rem;color:var(--text-muted)}.sidebar-nav{flex:1;padding:1rem .75rem;overflow-y:auto}.sidebar-section{margin-bottom:1.25rem}.sidebar-section-title{font-size:.65rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);padding:0 .75rem;margin-bottom:.5rem}.sidebar-link{display:flex;align-items:center;gap:.75rem;padding:.6rem .75rem;border-radius:var(--radius-md);color:var(--text-secondary);font-size:.875rem;font-weight:450;transition:all var(--transition-fast);text-decoration:none}.sidebar-link:hover{background:#7c3aed14;color:var(--text-primary)}.sidebar-link.active{background:#7c3aed1f;color:var(--text-accent);font-weight:500}.sidebar-link .icon{font-size:1.1rem;width:20px;text-align:center}.sidebar-user{padding:1rem;border-top:1px solid var(--border-color);display:flex;align-items:center;gap:.75rem}.sidebar-user-avatar{width:36px;height:36px;border-radius:50%;background:var(--accent-gradient);display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:600;color:#fff;flex-shrink:0}.sidebar-user-info{flex:1;min-width:0}.sidebar-user-info .name{font-size:.85rem;font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-user-info .role{font-size:.7rem;color:var(--text-muted)}.sidebar-logout{background:none;color:var(--text-muted);font-size:1rem;padding:.35rem;border-radius:var(--radius-sm);transition:all var(--transition-fast)}.sidebar-logout:hover{background:#ef44441f;color:var(--danger)}.main-content{flex:1;margin-left:var(--sidebar-width);min-height:100vh}.header{position:sticky;top:0;height:var(--header-height);display:flex;align-items:center;justify-content:space-between;padding:0 2rem;background:#0a0e1acc;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color);z-index:50}.header-left{display:flex;align-items:center;gap:1rem}.header-breadcrumb{font-size:.85rem;color:var(--text-secondary)}.header-breadcrumb span{color:var(--text-muted)}.mobile-menu-btn{display:none;background:var(--bg-glass);border:1px solid var(--border-color);color:var(--text-primary);padding:.5rem;border-radius:var(--radius-sm);font-size:1.2rem}.header-right{display:flex;align-items:center;gap:1rem}.header-date{font-size:.8rem;color:var(--text-muted)}.page-content{padding:1.5rem 2rem 2rem}.sidebar-overlay{display:none;position:fixed;inset:0;background:#00000080;z-index:90}@media(max-width:768px){.sidebar{width:260px;transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar-overlay.open{display:block}.main-content{margin-left:0}.mobile-menu-btn{display:flex}.header{padding:0 1rem}.page-content{padding:1rem}}._login-page_17887_1{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1.5rem;position:relative}._login-container_17887_10{width:100%;max-width:420px;animation:_fadeIn_17887_1 .5s ease-out}._login-header_17887_16{text-align:center;margin-bottom:2rem}._login-logo_17887_21{width:64px;height:64px;background:var(--accent-gradient);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:2rem;margin:0 auto 1rem;box-shadow:var(--shadow-glow)}._login-header_17887_16 h1{font-size:1.5rem;font-weight:700;margin-bottom:.25rem}._login-header_17887_16 p{color:var(--text-secondary);font-size:.9rem}._login-card_17887_45{background:var(--bg-glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--bg-glass-border);border-radius:var(--radius-xl);padding:2rem}._login-card_17887_45 ._form-group_17887_54{margin-bottom:1.25rem}._login-card_17887_45 input{width:100%;padding:.75rem 1rem}._login-btn_17887_63{width:100%;padding:.75rem;font-size:.95rem;font-weight:600;border-radius:var(--radius-md);background:var(--accent-gradient);color:#fff;border:none;cursor:pointer;transition:all var(--transition-fast);box-shadow:var(--shadow-sm);margin-top:.5rem}._login-btn_17887_63:hover:not(:disabled){transform:translateY(-1px);box-shadow:var(--shadow-glow)}._login-btn_17887_63:disabled{opacity:.6;cursor:not-allowed}._login-error_17887_88{background:#ef44441a;border:1px solid rgba(239,68,68,.2);border-radius:var(--radius-md);padding:.65rem 1rem;color:var(--danger);font-size:.85rem;margin-bottom:1rem;text-align:center}._login-footer_17887_99{text-align:center;margin-top:1.5rem;font-size:.8rem;color:var(--text-muted)}._dashboard_1xxxa_1{display:grid;gap:1.5rem}._stats-grid_1xxxa_6{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem}._stat-card_1xxxa_12{background:var(--bg-glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--bg-glass-border);border-radius:var(--radius-lg);padding:1.25rem;transition:all var(--transition-base);position:relative;overflow:hidden}._stat-card_1xxxa_12:after{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--accent-gradient);opacity:0;transition:opacity var(--transition-fast)}._stat-card_1xxxa_12:hover{border-color:var(--border-active);transform:translateY(-2px)}._stat-card_1xxxa_12:hover:after{opacity:1}._stat-card_1xxxa_12 ._stat-icon_1xxxa_45{font-size:1.5rem;margin-bottom:.75rem}._stat-card_1xxxa_12 ._stat-value_1xxxa_50{font-size:1.75rem;font-weight:700;color:var(--text-primary);margin-bottom:.2rem}._stat-card_1xxxa_12 ._stat-label_1xxxa_57{font-size:.8rem;color:var(--text-muted)}._section-card_1xxxa_62{background:var(--bg-glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--bg-glass-border);border-radius:var(--radius-lg);padding:1.25rem}._section-header_1xxxa_71{display:flex;align-items:center;justify-content:space-between;margin-bottom:1rem}._section-header_1xxxa_71 h2{font-size:1rem;font-weight:600;display:flex;align-items:center;gap:.5rem}._section-grid_1xxxa_86{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:1rem}._list-item_1xxxa_92{display:flex;align-items:center;gap:.75rem;padding:.65rem 0;border-bottom:1px solid var(--border-color)}._list-item_1xxxa_92:last-child{border-bottom:none}._list-item_1xxxa_92 ._item-icon_1xxxa_104{width:36px;height:36px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:.95rem;flex-shrink:0}._list-item_1xxxa_92 ._item-info_1xxxa_115{flex:1;min-width:0}._list-item_1xxxa_92 ._item-info_1xxxa_115 ._title_1xxxa_120{font-size:.85rem;font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}._list-item_1xxxa_92 ._item-info_1xxxa_115 ._meta_1xxxa_129{font-size:.75rem;color:var(--text-muted)}._page-card_1xxxa_135{background:var(--bg-glass);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--bg-glass-border);border-radius:var(--radius-lg);overflow:hidden}._page-card-header_1xxxa_143{padding:1.25rem;border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.75rem}._page-card-header_1xxxa_143 h2{font-size:1rem;font-weight:600}._page-card-body_1xxxa_158{padding:.5rem 0}._page-card-body_1xxxa_158 ._empty-state_1xxxa_162{padding:2rem}._search-box_1xxxa_166{display:flex;align-items:center;gap:.5rem;background:var(--bg-glass);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:0 .75rem;transition:border-color var(--transition-fast)}._search-box_1xxxa_166:focus-within{border-color:var(--accent-start)}._search-box_1xxxa_166 input{background:transparent;border:none;padding:.5rem 0;font-size:.85rem;width:180px}._search-box_1xxxa_166 input:focus{box-shadow:none}._action-bar_1xxxa_194{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap}._calendar-container_1xxxa_202{background:var(--bg-glass);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--bg-glass-border);border-radius:var(--radius-lg);padding:1.25rem}