:root{--color-mod-1: #0FC2C0;--color-mod-2: #F2B705;--color-mod-3: #F27999;--color-mod-4: #7055FF;--color-primary: #0089BD;--color-secondary: #00FCC0;--color-accent: #F27999;--color-highlight: #F2B705;--color-primary-dark: #006a94;--color-bg: #f8fafc;--color-surface: #ffffff;--color-text: #0f172a;--color-text-muted: #64748b;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--radius-md: .75rem;--radius-lg: 1rem;--font-sans: "Inter", system-ui, -apple-system, sans-serif;--transition: all .3s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--color-bg);color:var(--color-text);line-height:1.5;-webkit-font-smoothing:antialiased}button{font-family:inherit;cursor:pointer}h1,h2,h3,h4{line-height:1.2;font-weight:700;letter-spacing:-.025em}.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}.card{background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:1.5rem;transition:var(--transition);border:1px solid rgba(0,0,0,.05)}.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;border-radius:var(--radius-md);font-weight:600;border:none;transition:var(--transition);gap:.5rem;text-decoration:none}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark)}.btn-disabled{opacity:.6;cursor:not-allowed;background:var(--color-text-muted);color:#fff}.admin-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.admin-title h1{font-size:2rem;color:var(--color-text);margin-bottom:.5rem}.admin-title p{color:var(--color-text-muted)}.table-container{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow-x:auto;border:1px solid #e2e8f0}.admin-table{width:100%;border-collapse:collapse;text-align:left}.admin-table th{background:#f8fafc;padding:1rem 1.5rem;font-size:.75rem;text-transform:uppercase;color:var(--color-text-muted);font-weight:600;border-bottom:1px solid #e2e8f0}.admin-table td{padding:1rem 1.5rem;border-bottom:1px solid #e2e8f0;color:var(--color-text);vertical-align:middle}.admin-table tr:hover{background-color:#f8fafc}.badge{display:inline-block;padding:.25rem .5rem;border-radius:9999px;font-size:.75rem;font-weight:600;background-color:#e0f2fe;color:#0369a1}.btn-link{background:none;border:none;color:var(--color-primary);font-size:.8rem;margin-left:.5rem;text-decoration:underline;cursor:pointer;padding:0}.actions{display:flex;gap:.5rem;justify-content:flex-end}.btn-edit{color:#4f46e5;background:none;border:1px solid #e0e7ff;border-radius:4px;padding:4px 8px;font-size:.8rem;cursor:pointer}.btn-edit:hover{background-color:#e0e7ff}.btn-delete{color:#dc2626;background:none;border:1px solid #fee2e2;border-radius:4px;padding:4px 8px;font-size:.8rem;cursor:pointer}.btn-delete:hover{background-color:#fee2e2}.attendees-row td{background-color:#f8fafc;padding:0}.attendees-card{margin:1rem 1.5rem;padding:1rem;background:#fff;border:1px solid #e2e8f0;border-radius:var(--radius-md);max-width:500px}.attendees-header{display:flex;justify-content:space-between;margin-bottom:.5rem;font-weight:700;border-bottom:1px solid #eee;padding-bottom:.5rem}.modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:50;padding:1rem}.modal{background:#fff;border-radius:var(--radius-lg);padding:2rem;width:100%;max-width:500px;box-shadow:var(--shadow-lg)}.form-group{margin-bottom:1rem}.form-group label{display:block;font-size:.875rem;font-weight:500;color:var(--color-text);margin-bottom:.5rem}.form-input{width:100%;padding:.75rem;border:1px solid #cbd5e1;border-radius:var(--radius-md);font-family:inherit;font-size:1rem}.form-input:focus{outline:2px solid var(--color-primary);border-color:transparent}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.modal-actions{display:flex;justify-content:flex-end;gap:1rem;margin-top:1.5rem}.btn-secondary{background:#f1f5f9;color:var(--color-text);border:1px solid #cbd5e1}.btn-secondary:hover{background:#e2e8f0}.main-header{background:var(--color-surface);border-bottom:1px solid rgba(0,0,0,.05);padding:1rem 0;position:sticky;top:0;z-index:50;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#ffffffe6}.header-content{display:flex;justify-content:space-between;align-items:center}.logo-area h1{font-size:1.25rem;color:var(--color-primary)}.logo-area .text-muted{font-weight:400;color:var(--color-text-muted)}.user-area{display:flex;align-items:center;gap:1rem}.user-info{text-align:right;display:none}@media(min-width:640px){.user-info{display:block}}.user-name{display:block;font-weight:600;font-size:.875rem}.user-email{display:block;font-size:.75rem;color:var(--color-text-muted)}.avatar{width:40px;height:40px;border-radius:50%;background:var(--color-primary);background:linear-gradient(135deg,var(--color-primary),var(--color-accent));color:#fff;display:flex;align-items:center;justify-content:center}.main-content{padding-top:2rem;padding-bottom:4rem}.session-card{display:flex;flex-direction:column;gap:1rem;position:relative;overflow:hidden;border-top:4px solid transparent}.status-available{border-top-color:var(--color-primary)}.status-enrolled{border-top-color:var(--color-primary-dark);background:linear-gradient(to bottom,#fff,#f0f9ff)}.status-completed{border-top-color:#10b981;opacity:.8}.status-locked{border-top-color:var(--color-text-muted);opacity:.6}.mod-1{border-top-color:var(--color-mod-1)}.mod-1 .module-badge{color:var(--color-mod-1)}.mod-2{border-top-color:var(--color-mod-2)}.mod-2 .module-badge{color:var(--color-mod-2)}.mod-3{border-top-color:var(--color-mod-3)}.mod-3 .module-badge{color:var(--color-mod-3)}.mod-4{border-top-color:var(--color-mod-4)}.mod-4 .module-badge{color:var(--color-mod-4)}.card-header{display:flex;justify-content:space-between;align-items:center}.module-badge{font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;font-weight:700;color:var(--color-text-muted)}.badge-enrolled{background:var(--color-accent);color:#fff;padding:.25rem .5rem;border-radius:1rem;font-size:.75rem;font-weight:600}.session-title{font-size:1.25rem;margin-bottom:1rem;color:var(--color-text)}.session-details{display:flex;flex-direction:column;gap:.75rem}.detail-row{display:flex;align-items:center;gap:.75rem;color:var(--color-text);font-size:.95rem}.icon-muted{color:var(--color-primary);opacity:.8}.full-width{width:100%}.btn-join-active{background:linear-gradient(135deg,#f43f5e,#e11d48);color:#fff;animation:pulse 2s infinite}@keyframes pulse{0%{box-shadow:0 0 #e11d4866}70%{box-shadow:0 0 0 10px #e11d4800}to{box-shadow:0 0 #e11d4800}}.locked-message,.completed-message{display:flex;align-items:center;justify-content:center;gap:.5rem;font-size:.875rem;color:var(--color-text-muted);padding:.5rem;background:#00000008;border-radius:var(--radius-md)}.text-success{color:#10b981}.toast-container{position:fixed;bottom:2rem;right:2rem;display:flex;flex-direction:column;gap:1rem;z-index:100;pointer-events:none}.toast{pointer-events:auto;min-width:300px;background:#fff;padding:1rem;border-radius:var(--radius-md);box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:.75rem;animation:slideIn .3s ease-out forwards;border-left:4px solid transparent}@keyframes slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.toast-success{border-left-color:#10b981}.toast-error{border-left-color:#ef4444}.toast-info{border-left-color:var(--color-primary)}.toast-icon{display:flex;align-items:center;justify-content:center}.toast-success .toast-icon{color:#10b981}.toast-error .toast-icon{color:#ef4444}.toast-info .toast-icon{color:var(--color-primary)}.toast-message{flex:1;font-size:.9rem;color:var(--color-text);font-weight:500}.toast-close{background:none;border:none;font-size:1.25rem;line-height:1;color:var(--color-text-muted);opacity:.6}.toast-close:hover{opacity:1}.dashboard-intro{margin-bottom:2rem;text-align:center}.dashboard-intro h2{font-size:2rem;color:var(--color-primary-dark);margin-bottom:.5rem}.dashboard-intro p{color:var(--color-text-muted)}.sessions-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem}.loading-container,.error-container{text-align:center;padding:4rem 1rem;color:var(--color-text-muted)}.spinner{width:40px;height:40px;border:4px solid rgba(0,0,0,.1);border-left-color:var(--color-primary);border-radius:50%;margin:0 auto 1rem;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}