:root{--primary:#c1009d;--primary-dark:#a0007f;--primary-light:#d633b3;--success:#10b981;--warning:#f59e0b;--error:#ef4444;--white:#fff;--gray-50:#f9fafb;--gray-100:#f3f4f6;--gray-200:#e5e7eb;--gray-300:#d1d5db;--gray-400:#9ca3af;--gray-500:#6b7280;--gray-600:#4b5563;--gray-700:#374151;--gray-800:#1f2937;--gray-900:#111827;--spacing-xs:.25rem;--spacing-sm:.5rem;--spacing-md:1rem;--spacing-lg:1.5rem;--spacing-xl:2rem;--radius-md:.5rem;--radius-lg:.75rem;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--gray-50);color:var(--gray-900);-webkit-font-smoothing:antialiased;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.5}.app-container{min-height:100vh;display:flex}.sidebar{background:var(--white);border-right:1px solid var(--gray-200);width:260px;padding:var(--spacing-lg);flex-direction:column;display:flex}.sidebar-logo{color:var(--primary);margin-bottom:var(--spacing-xl);align-items:center;gap:var(--spacing-sm);font-size:1.5rem;font-weight:700;display:flex}.sidebar-nav{gap:var(--spacing-xs);flex-direction:column;display:flex}.sidebar-link{align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);color:var(--gray-600);border-radius:var(--radius-md);font-weight:500;text-decoration:none;transition:all .15s;display:flex}.sidebar-link:hover{background:var(--gray-100);color:var(--gray-900)}.sidebar-link.active{background:var(--primary);color:var(--white)}.main-content{padding:var(--spacing-xl);scrollbar-width:none;flex:1;overflow-y:auto}.main-content::-webkit-scrollbar{width:0;height:0}.main-content{-ms-overflow-style:none}.page-header{margin-bottom:var(--spacing-xl)}.page-title{color:var(--gray-900);font-size:1.875rem;font-weight:700}.page-subtitle{color:var(--gray-500);margin-top:var(--spacing-xs)}.card{background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--gray-200)}.card-body{padding:var(--spacing-lg)}.btn{justify-content:center;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);cursor:pointer;border:none;font-size:.875rem;font-weight:500;transition:all 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spin{to{transform:rotate(360deg)}}.flex{display:flex}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.mb-md{margin-bottom:var(--spacing-md)}.mb-lg{margin-bottom:var(--spacing-lg)}.text-sm{font-size:.875rem}.text-muted{color:var(--gray-500)}.font-semibold{font-weight:600}.items-center{align-items:center}.justify-between{justify-content:space-between}.coach-avatar{background:var(--primary-light);width:64px;height:64px;color:var(--white);border-radius:9999px;justify-content:center;align-items:center;font-size:1.5rem;font-weight:600;display:flex}.coach-student-pill{color:var(--gray-700);background:var(--gray-100);border:1px solid var(--gray-200);white-space:nowrap;border-radius:9999px;align-items:center;padding:.2rem .55rem;font-size:.75rem;font-weight:600;display:inline-flex}.badge{padding:var(--spacing-xs) var(--spacing-sm);border-radius:9999px;align-items:center;font-size:.75rem;font-weight:500;display:inline-flex}.badge-matched{color:#065f46;background:#d1fae5}.badge-blocked{color:#991b1b;background:#fee2e2}.slot-item{background:var(--gray-100);padding:var(--spacing-xs) var(--spacing-sm);color:var(--gray-700);border-radius:.25rem;font-size:.75rem}.form-label{color:var(--gray-700);margin-bottom:.375rem;font-size:.875rem;font-weight:600;display:block}.form-input{border:1px solid var(--gray-300);border-radius:var(--radius-md);width:100%;color:var(--gray-900);background:var(--white);padding:.5rem .75rem;font-size:.875rem;transition:border-color .15s}.form-input:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px #c1009d1f}.form-input::placeholder{color:var(--gray-400)}textarea.form-input{resize:vertical;min-height:100px}.modal-overlay{z-index:1000;background:#11182799;justify-content:center;align-items:center;padding:1rem;display:flex;position:fixed;inset:0}.modal-dialog{background:var(--white);border-radius:var(--radius-lg);width:100%;max-width:520px;max-height:90vh;overflow:auto;box-shadow:0 20px 60px #0003}.modal-header{border-bottom:1px solid var(--gray-200);justify-content:space-between;align-items:center;padding:1.25rem 1.5rem;display:flex}.modal-title{color:var(--gray-900);margin:0;font-size:1.25rem;font-weight:700}.modal-body{padding:1.5rem}.modal-footer{border-top:1px solid var(--gray-200);justify-content:flex-end;gap:.5rem;padding:1rem 1.5rem;display:flex}.form-group{margin-bottom:1.25rem}.form-group:last-of-type{margin-bottom:0}.checkbox-group{flex-direction:column;gap:.5rem;display:flex}.checkbox-label{color:var(--gray-700);cursor:pointer;border-radius:var(--radius-md);border:1px solid var(--gray-200);background:var(--gray-50);align-items:center;gap:.5rem;padding:.5rem .75rem;font-size:.875rem;transition:background .15s;display:flex}.checkbox-label:hover{background:var(--gray-100)}.checkbox-label input{width:1rem;height:1rem;accent-color:var(--primary);cursor:pointer}.toggle-row{border:1px solid var(--gray-200);border-radius:var(--radius-md);background:var(--gray-50);justify-content:space-between;align-items:center;gap:1rem;padding:.75rem 1rem;display:flex}.toggle-row-label{color:var(--gray-700);font-size:.875rem;font-weight:600;display:block}.toggle-switch{cursor:pointer;background:var(--gray-300);border:none;border-radius:9999px;flex-shrink:0;width:52px;height:28px;padding:0;transition:background .2s;position:relative}.toggle-switch[data-on=true]{background:var(--primary)}.toggle-switch[data-on=false]{background:var(--gray-400)}.toggle-switch:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.toggle-switch-thumb{pointer-events:none;background:#fff;border-radius:50%;width:22px;height:22px;transition:transform .2s;position:absolute;top:3px;left:3px;box-shadow:0 1px 3px #0003}.toggle-switch[data-on=true] .toggle-switch-thumb{transform:translate(24px)}.chat-history-section{margin-top:var(--spacing-md);padding-top:var(--spacing-md);border-top:1px solid var(--gray-200);flex-direction:column;flex:1;min-height:0;display:flex;overflow:hidden}.chat-history-header{padding:0 var(--spacing-xs);margin-bottom:var(--spacing-sm);justify-content:space-between;align-items:center;display:flex}.chat-history-title{text-transform:uppercase;letter-spacing:.05em;color:var(--gray-400);font-size:.68rem;font-weight:600}.chat-new-btn{border:1px solid var(--gray-200);border-radius:var(--radius-md);cursor:pointer;color:var(--primary);background:0 0;align-items:center;gap:2px;padding:2px 8px;font-size:.7rem;font-weight:600;transition:all .15s;display:flex}.chat-new-btn:hover{background:var(--primary);color:var(--white);border-color:var(--primary)}.chat-history-list{flex-direction:column;flex:1;gap:1px;display:flex;overflow-y:auto}.chat-history-list::-webkit-scrollbar{width:4px}.chat-history-list::-webkit-scrollbar-thumb{background:var(--gray-300);border-radius:4px}.chat-session-item{border-radius:var(--radius-md);cursor:pointer;border-left:2px solid #0000;align-items:center;gap:6px;padding:6px 8px;transition:all .12s;display:flex;position:relative}.chat-session-item:hover{background:var(--gray-100)}.chat-session-item.active{border-left-color:var(--primary);background:#c1009d14}.chat-session-info{flex:1;min-width:0}.chat-session-title{color:var(--gray-700);white-space:nowrap;text-overflow:ellipsis;font-size:.78rem;font-weight:500;line-height:1.3;overflow:hidden}.chat-session-item.active .chat-session-title{color:var(--primary);font-weight:600}.chat-session-time{color:var(--gray-400);margin-top:1px;font-size:.64rem}.chat-session-delete{cursor:pointer;color:var(--gray-400);background:0 0;border:none;border-radius:4px;flex-shrink:0;align-items:center;padding:3px;display:none}.chat-session-item:hover .chat-session-delete{display:flex}.chat-session-delete:hover{color:var(--error);background:#fef2f2}.dashboard-table-scroll{scrollbar-width:none;-ms-overflow-style:none;overflow-x:auto}.dashboard-table-scroll::-webkit-scrollbar{width:0;height:0}@media (width<=768px){.sidebar{display:none}.main-content{padding:var(--spacing-md)}}