*,:after,:before{box-sizing:border-box}#root,body,html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f9fafb;color:#111827;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Inter,system-ui,sans-serif;margin:0;min-height:100%;padding:0}:root{--bg:#f9fafb;--surface:#fff;--border:#e5e7eb;--border-focus:#a5b4fc;--primary:#4f46e5;--primary-dark:#4338ca;--primary-soft:#eef2ff;--primary-soft-2:#e0e7ff;--text-1:#111827;--text-2:#6b7280;--text-3:#9ca3af;--shadow-xs:0 1px 2px #0000000d;--shadow-sm:0 1px 3px #00000014,0 1px 2px #0000000a;--shadow-md:0 4px 12px #00000014,0 2px 4px #0000000a;--shadow-lg:0 20px 40px #0000001a,0 8px 16px #0000000f;--r-sm:8px;--r:12px;--r-lg:16px;--r-xl:20px}.onboard-page{align-items:center;background:linear-gradient(135deg,#eef2ff,#f5f3ff 50%,#f0fdfa);display:flex;justify-content:center;min-height:100vh;padding:24px 20px}.onboard-card{animation:slideUp .25s ease;background:#fff;background:var(--surface);border-radius:20px;border-radius:var(--r-xl);box-shadow:0 20px 40px #0000001a,0 8px 16px #0000000f;box-shadow:var(--shadow-lg);max-width:480px;padding:40px 36px 36px;width:100%}.onboard-brand{margin-bottom:32px;text-align:center}.onboard-logo-img{display:block;height:90px;margin:0 auto 14px;object-fit:contain;width:auto}.onboard-sub{color:#6b7280;color:var(--text-2);font-size:15px;margin:0}.onboard-fields{margin-bottom:8px}.onboard-pill-row{display:flex;flex-wrap:wrap;gap:8px}.onboard-pill{background:#fff;background:var(--surface);border:1.5px solid #e5e7eb;border:1.5px solid var(--border);border-radius:99px;color:#6b7280;color:var(--text-2);cursor:pointer;font-family:inherit;font-size:14px;font-weight:600;padding:8px 18px;transition:border-color .15s,background .15s,color .15s}.onboard-pill:hover{background:#eef2ff;background:var(--primary-soft);color:#4f46e5;color:var(--primary)}.onboard-pill--active,.onboard-pill:hover{border-color:#4f46e5;border-color:var(--primary)}.onboard-pill--active{background:#4f46e5;background:var(--primary);color:#fff}.onboard-pill--active:hover{background:#4338ca;background:var(--primary-dark);color:#fff}.onboard-cta{font-size:16px;margin-top:8px}.auth-tabs{background:#f9fafb;background:var(--bg);border-radius:8px;border-radius:var(--r-sm);display:flex;gap:4px;margin-bottom:24px;padding:4px}.auth-tab{background:#0000;border:none;border-radius:6px;color:#6b7280;color:var(--text-2);cursor:pointer;flex:1 1;font-family:inherit;font-size:14px;font-weight:600;padding:8px 0;transition:background .15s,color .15s}.auth-tab:hover{color:#111827;color:var(--text-1)}.auth-tab--active{background:#fff;background:var(--surface);box-shadow:0 1px 2px #0000000d;box-shadow:var(--shadow-xs);color:#4f46e5;color:var(--primary)}.auth-error{background:#fef2f2;border:1px solid #fecaca;border-radius:8px;border-radius:var(--r-sm);color:#dc2626;font-size:13.5px;margin-bottom:12px;padding:10px 14px}.auth-divider{align-items:center;color:#9ca3af;color:var(--text-3);display:flex;font-size:12px;font-weight:500;gap:12px;letter-spacing:.05em;margin:16px 0;text-transform:uppercase}.auth-divider:after,.auth-divider:before{background:#e5e7eb;background:var(--border);content:"";flex:1 1;height:1px}.auth-google-btn{align-items:center;background:#fff;background:var(--surface);border:1.5px solid #e5e7eb;border:1.5px solid var(--border);border-radius:8px;border-radius:var(--r-sm);color:#111827;color:var(--text-1);cursor:pointer;display:flex;font-family:inherit;font-size:14px;font-weight:600;gap:10px;justify-content:center;padding:10px 16px;transition:border-color .15s,box-shadow .15s;width:100%}.auth-google-btn:hover:not(:disabled){border-color:#9ca3af;box-shadow:0 1px 2px #0000000d;box-shadow:var(--shadow-xs)}.auth-google-btn:disabled{cursor:not-allowed;opacity:.5}.auth-guest-btn{background:#0000;border:1.5px dashed #e5e7eb;border:1.5px dashed var(--border);border-radius:10px;color:#6b7280;color:var(--text-2);cursor:pointer;font-family:inherit;font-size:14px;font-weight:500;padding:10px 16px;transition:border-color .15s,color .15s,background .15s;width:100%}.auth-guest-btn:hover:not(:disabled){background:#eef2ff;background:var(--primary-soft);border-color:#4f46e5;border-color:var(--primary);color:#4f46e5;color:var(--primary)}.auth-guest-btn:disabled{cursor:not-allowed;opacity:.5}.auth-loading{align-items:center;background:#f9fafb;background:var(--bg);display:flex;justify-content:center;min-height:100vh}.auth-loading-spinner{animation:spin .7s linear infinite;border:3px solid #e5e7eb;border-top-color:#4f46e5;border:3px solid var(--border);border-radius:50%;border-top-color:var(--primary);height:32px;width:32px}.nav-signout-btn{align-items:center;background:#0000;border:none;border-radius:6px;color:#9ca3af;color:var(--text-3);cursor:pointer;display:flex;flex-shrink:0;font-size:15px;height:28px;justify-content:center;transition:background .12s,color .12s;width:28px}.nav-signout-btn:hover{background:#fef2f2;color:#dc2626}.nav-create-account-btn{background:#eef2ff;background:var(--primary-soft);border:1.5px solid #4f46e5;border:1.5px solid var(--primary);border-radius:20px;color:#4f46e5;color:var(--primary);cursor:pointer;flex-shrink:0;font-family:inherit;font-size:12px;font-weight:600;padding:5px 12px;transition:background .15s,color .15s;white-space:nowrap}.nav-create-account-btn:hover{background:#4f46e5;background:var(--primary);color:#fff}.form-label-opt{color:#9ca3af;color:var(--text-3);font-size:11px;font-weight:400;letter-spacing:0;text-transform:none}@media (max-width:520px){.onboard-card{padding:28px 20px 24px}.onboard-logo-img{height:72px}}.nav{backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);background:#ffffffe0;border-bottom:1px solid #e5e7eb;border-bottom:1px solid var(--border);height:60px;justify-content:space-between;padding:0 28px;position:sticky;top:0;z-index:100}.nav,.nav-brand{align-items:center;display:flex}.nav-brand{gap:10px}.nav-logo-img{display:block;flex-shrink:0;height:36px;object-fit:contain;width:auto}.nav-user{gap:8px}.nav-user,.nav-user-avatar{align-items:center;display:flex}.nav-user-avatar{background:#4f46e5;background:var(--primary);border-radius:50%;color:#fff;flex-shrink:0;font-size:13px;font-weight:700;height:30px;justify-content:center;width:30px}.nav-user-name{color:#6b7280;color:var(--text-2);font-size:13.5px;font-weight:600}.nav-sidebar-toggle{align-items:center;background:#0000;border:none;border-radius:8px;color:#6b7280;color:var(--text-2);cursor:pointer;display:none;flex-shrink:0;font-size:18px;height:32px;justify-content:center;margin-right:4px;transition:background .12s,color .12s;width:32px}.nav-sidebar-toggle:hover{background:#eef2ff;background:var(--primary-soft);color:#4f46e5;color:var(--primary)}@media (max-width:768px){.nav-sidebar-toggle{display:flex}}.nav .timer-wrap{flex:1 1;justify-content:center}@media (max-width:480px){.nav-user-name{display:none}}.app-body{display:flex;min-height:calc(100vh - 60px)}.app-content{flex:1 1;margin-left:260px;min-width:0}@media (max-width:768px){.app-content{margin-left:0}}.page{background:#f9fafb;background:var(--bg);min-height:calc(100vh - 60px)}.container{margin:0 auto;max-width:1080px;padding:0 28px}.hero{padding:52px 0 40px}.hero-eyebrow{align-items:center;background:#eef2ff;background:var(--primary-soft);border-radius:99px;color:#4f46e5;color:var(--primary);display:inline-flex;font-size:12px;font-weight:700;gap:6px;letter-spacing:1px;margin-bottom:14px;padding:4px 10px;text-transform:uppercase}.hero-title{color:#111827;color:var(--text-1);font-size:34px;font-weight:800;letter-spacing:-.6px;line-height:1.2;margin:0 0 10px}.hero-sub{color:#6b7280;color:var(--text-2);font-size:16px;line-height:1.6;margin:0}.class-grid{grid-gap:18px;display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));padding-bottom:64px}.class-card{background:#fff;background:var(--surface);border:1px solid #e5e7eb;border:1px solid var(--border);border-radius:16px;border-radius:var(--r-lg);box-shadow:0 1px 3px #00000014,0 1px 2px #0000000a;box-shadow:var(--shadow-sm);cursor:pointer;display:flex;flex-direction:column;gap:14px;min-height:142px;padding:22px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.class-card:hover{border-color:#d1d5db;box-shadow:0 4px 12px #00000014,0 2px 4px #0000000a;box-shadow:var(--shadow-md);transform:translateY(-3px)}.class-card-icon{align-items:center;border-radius:12px;display:flex;flex-shrink:0;font-size:22px;height:46px;justify-content:center;width:46px}.class-card-name{color:#111827;color:var(--text-1);font-size:15px;font-weight:700;letter-spacing:-.2px;margin:0 0 3px}.class-card-subject{color:#6b7280;color:var(--text-2);font-size:13px;font-weight:500;margin:0}.add-card{align-items:center;background:#fff;background:var(--surface);border:2px dashed #d1d5db;border-radius:16px;border-radius:var(--r-lg);cursor:pointer;display:flex;flex-direction:column;gap:10px;justify-content:center;min-height:142px;padding:22px;text-align:center;transition:border-color .18s ease,background .18s ease,transform .18s ease}.add-card:hover{border-color:#4f46e5;border-color:var(--primary);transform:translateY(-3px)}.add-card-plus,.add-card:hover{background:#eef2ff;background:var(--primary-soft)}.add-card-plus{align-items:center;border-radius:12px;color:#4f46e5;color:var(--primary);display:flex;font-size:26px;font-weight:300;height:46px;justify-content:center;line-height:1;transition:background .18s;width:46px}.add-card:hover .add-card-plus{background:#e0e7ff;background:var(--primary-soft-2)}.add-card-label{color:#4f46e5;color:var(--primary);font-size:14px;font-weight:600;margin:0}.empty-state{flex-direction:column;grid-column:1/-1;padding:64px 20px 24px;text-align:center}.empty-icon,.empty-state{align-items:center;display:flex}.empty-icon{background:#eef2ff;background:var(--primary-soft);border-radius:20px;font-size:34px;height:72px;justify-content:center;margin-bottom:20px;width:72px}.empty-title{color:#111827;color:var(--text-1);font-size:20px;font-weight:700;margin:0 0 8px}.empty-sub{color:#6b7280;color:var(--text-2);font-size:15px;line-height:1.6;margin:0;max-width:360px}.overlay{align-items:center;animation:fadeIn .15s ease;backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);background:#11182773;display:flex;inset:0;justify-content:center;padding:20px;position:fixed;z-index:200}.modal{animation:slideUp .2s ease;background:#fff;background:var(--surface);border-radius:20px;border-radius:var(--r-xl);box-shadow:0 20px 40px #0000001a,0 8px 16px #0000000f;box-shadow:var(--shadow-lg);max-width:476px;padding:32px;position:relative;width:100%}.modal-header{align-items:center;display:flex;justify-content:space-between;margin-bottom:28px}.modal-title{color:#111827;color:var(--text-1);font-size:20px;font-weight:800;letter-spacing:-.4px;margin:0}.modal-close{align-items:center;background:#f3f4f6;border:none;border-radius:8px;border-radius:var(--r-sm);color:#6b7280;color:var(--text-2);cursor:pointer;display:flex;font-size:16px;height:30px;justify-content:center;line-height:1;padding:0;transition:background .15s,color .15s;width:30px}.modal-close:hover{background:#e5e7eb;color:#111827;color:var(--text-1)}.form-group{margin-bottom:24px}.form-label{display:block;font-size:13px;font-weight:700;letter-spacing:.1px;letter-spacing:.6px;margin-bottom:8px;text-transform:uppercase}.form-input,.form-label{color:#111827;color:var(--text-1)}.form-input{background:#fff;background:var(--surface);border:1.5px solid #e5e7eb;border:1.5px solid var(--border);border-radius:8px;border-radius:var(--r-sm);font-family:inherit;font-size:15px;outline:none;padding:11px 14px;transition:border-color .15s,box-shadow .15s;width:100%}.form-input::placeholder{color:#9ca3af;color:var(--text-3)}.form-input:focus{border-color:#4f46e5;border-color:var(--primary);box-shadow:0 0 0 3px #4f46e51f}.subject-grid{grid-gap:9px;display:grid;gap:9px;grid-template-columns:repeat(4,1fr)}.subj-btn{align-items:center;background:#fff;background:var(--surface);border:1.5px solid #e5e7eb;border:1.5px solid var(--border);border-radius:8px;border-radius:var(--r-sm);cursor:pointer;display:flex;flex-direction:column;font-family:inherit;gap:5px;padding:11px 6px;transition:border-color .15s,background .15s}.subj-btn:hover{border-color:#a5b4fc;border-color:var(--border-focus)}.subj-btn.selected,.subj-btn:hover{background:#eef2ff;background:var(--primary-soft)}.subj-btn.selected{border-color:#4f46e5;border-color:var(--primary)}.subj-btn-icon{font-size:20px;line-height:1}.subj-btn-label{color:#6b7280;color:var(--text-2);font-size:10.5px;font-weight:600;line-height:1.2;text-align:center}.subj-btn.selected .subj-btn-label{color:#4f46e5;color:var(--primary)}.btn{align-items:center;border:none;border-radius:8px;border-radius:var(--r-sm);cursor:pointer;display:inline-flex;font-family:inherit;font-weight:600;gap:7px;justify-content:center;letter-spacing:-.1px;text-decoration:none;transition:background .15s,box-shadow .15s,transform .1s,color .15s}.btn-primary{background:#4f46e5;background:var(--primary);color:#fff;font-size:15px;padding:12px 20px;width:100%}.btn-primary:hover:not(:disabled){background:#4338ca;background:var(--primary-dark);box-shadow:0 4px 14px #4f46e552}.btn-primary:active:not(:disabled){transform:scale(.99)}.btn-primary:disabled{cursor:not-allowed;opacity:.4}.btn-ghost{background:#0000;border-radius:8px;border-radius:var(--r-sm);color:#6b7280;color:var(--text-2);font-size:14px;padding:7px 12px}.btn-ghost:hover{background:#f3f4f6;color:#111827;color:var(--text-1)}.detail-header{border-bottom:1px solid #e5e7eb;border-bottom:1px solid var(--border);margin-bottom:36px;padding:36px 0 32px}.detail-back{margin-bottom:24px}.detail-meta{align-items:center;display:flex;gap:18px}.detail-class-icon{align-items:center;border-radius:16px;display:flex;flex-shrink:0;font-size:28px;height:60px;justify-content:center;width:60px}.detail-class-name{color:#111827;color:var(--text-1);font-size:30px;font-weight:800;letter-spacing:-.6px;margin:0 0 6px}.subject-chip{align-items:center;border-radius:99px;display:inline-flex;font-size:13px;font-weight:600;gap:5px;padding:4px 12px}.goal-banner{align-items:center;background:linear-gradient(135deg,#eef2ff,#e0e7ff);border:1px solid #c7d2fe;border-radius:12px;border-radius:var(--r);display:flex;gap:14px;margin-bottom:28px;padding:16px 20px}.goal-banner-icon{flex-shrink:0;font-size:24px}.goal-banner-label{color:#4f46e5;color:var(--primary);font-size:10.5px;font-weight:700;letter-spacing:.9px;margin-bottom:3px;text-transform:uppercase}.goal-banner-text{color:#4338ca;color:var(--primary-dark);font-size:15px;font-weight:600;line-height:1.4}.goal-banner-body{flex:1 1;min-width:0}.goal-display-row{align-items:center;border-radius:6px;cursor:pointer;display:flex;gap:8px;margin:0 -4px 0 0;padding:2px 4px 2px 0;transition:background .12s}.goal-display-row:hover{background:#4f46e512}.goal-display-row:hover .goal-edit-icon{opacity:1}.goal-edit-icon{color:#4f46e5;color:var(--primary);flex-shrink:0;font-size:13px;line-height:1;opacity:0;transition:opacity .12s}.goal-placeholder{color:#818cf8;font-size:14px;font-style:italic;font-weight:500}.goal-edit-row{display:flex;flex-direction:column;gap:7px}.goal-edit-input{background:#ffffffb3;border:1.5px solid #a5b4fc;border-radius:8px;box-sizing:border-box;color:#4338ca;color:var(--primary-dark);font-family:inherit;font-size:14px;font-weight:500;outline:none;padding:7px 10px;transition:border-color .15s,box-shadow .15s;width:100%}.goal-edit-input:focus{border-color:#4f46e5;border-color:var(--primary);box-shadow:0 0 0 3px #4f46e51f}.goal-edit-actions{display:flex;gap:7px}.goal-save-btn{background:#4f46e5;background:var(--primary);border:none;border-radius:7px;color:#fff;cursor:pointer;font-family:inherit;font-size:12.5px;font-weight:700;padding:5px 14px;transition:background .12s}.goal-save-btn:hover{background:#4338ca;background:var(--primary-dark)}.goal-cancel-btn{background:#0000;border:1px solid #c7d2fe;border-radius:7px;color:#6b7280;color:var(--text-2);cursor:pointer;font-family:inherit;font-size:12.5px;font-weight:600;padding:5px 10px;transition:background .12s}.goal-cancel-btn:hover{background:#4f46e512}.section-eyebrow{color:#9ca3af;color:var(--text-3);font-size:11px;font-weight:700;letter-spacing:1.2px;margin:0 0 18px;text-transform:uppercase}.feature-grid{grid-gap:18px;display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));padding-bottom:64px}.feature-card{background:#fff;background:var(--surface);border:1px solid #e5e7eb;border:1px solid var(--border);border-radius:16px;border-radius:var(--r-lg);box-shadow:0 1px 3px #00000014,0 1px 2px #0000000a;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:0;padding:28px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.feature-card:hover{border-color:#d1d5db;box-shadow:0 4px 12px #00000014,0 2px 4px #0000000a;box-shadow:var(--shadow-md);transform:translateY(-3px)}.feature-card-icon-wrap{align-items:center;background:#eef2ff;background:var(--primary-soft);border-radius:14px;display:flex;font-size:24px;height:52px;justify-content:center;margin-bottom:18px;width:52px}.feature-card-title{color:#111827;color:var(--text-1);font-size:17px;font-weight:700;letter-spacing:-.2px;margin:0 0 8px}.feature-card-desc{color:#6b7280;color:var(--text-2);flex:1 1;font-size:14px;line-height:1.65;margin:0 0 22px}.btn-outline{align-items:center;align-self:flex-start;background:#0000;border:1.5px solid #4f46e5;border:1.5px solid var(--primary);border-radius:8px;border-radius:var(--r-sm);color:#4f46e5;color:var(--primary);cursor:pointer;display:inline-flex;font-family:inherit;font-size:14px;font-weight:600;gap:6px;padding:9px 18px;transition:background .15s,color .15s,box-shadow .15s}.btn-outline:hover{background:#4f46e5;background:var(--primary);box-shadow:0 4px 14px #4f46e547;color:#fff}.placeholder-wrap{align-items:center;display:flex;flex-direction:column;padding:72px 20px 60px;text-align:center}.placeholder-icon{align-items:center;background:#eef2ff;background:var(--primary-soft);border-radius:22px;display:flex;font-size:38px;height:80px;justify-content:center;margin-bottom:24px;width:80px}.placeholder-title{color:#111827;color:var(--text-1);font-size:24px;font-weight:800;letter-spacing:-.4px;margin:0 0 10px}.placeholder-class{color:#6b7280;color:var(--text-2);font-size:15px;margin:0 0 6px}.placeholder-note{color:#9ca3af;color:var(--text-3);font-size:14px;margin:0}.coming-soon-badge{align-items:center;background:#fef9c3;border-radius:99px;color:#92400e;display:inline-flex;font-size:13px;font-weight:600;gap:6px;margin-top:20px;padding:6px 14px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(18px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}@media 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