*,:before,:after{box-sizing:border-box}html,body{height:100%;margin:0;padding:0}#root{text-align:left;border:none;width:100%;max-width:100%;height:100%;margin:0}button{cursor:pointer;font-family:inherit}input,select,textarea{font-family:inherit}:root{--primary:#6366f1;--primary-dark:#4f46e5;--primary-light:#e0e7ff;--success:#10b981;--warning:#f59e0b;--purple:#8b5cf6;--red:#ef4444;--bg:#f1f5f9;--surface:#fff;--border:#e2e8f0;--border-light:#f1f5f9;--text:#1e293b;--muted:#64748b;--shadow:0 1px 3px #00000014, 0 1px 2px #0000000a;--shadow-lg:0 10px 25px #0000001f, 0 4px 6px #0000000f;color:var(--text);font-family:system-ui,-apple-system,Segoe UI,sans-serif}.page{background:var(--bg);flex-direction:column;height:100vh;display:flex;overflow:hidden}.app-header{background:var(--surface);border-bottom:1px solid var(--border);height:60px;box-shadow:var(--shadow);flex-shrink:0;justify-content:space-between;align-items:center;padding:0 24px;display:flex}.header-left{align-items:center;gap:16px;display:flex}.app-title{color:var(--primary);letter-spacing:-.5px;margin:0;font-size:20px;font-weight:800}.app-subtitle{color:var(--muted);margin:0;font-size:13px}.header-actions{align-items:center;gap:8px;display:flex}.back-btn{color:var(--primary);background:0 0;border:none;padding:6px 0;font-size:14px;font-weight:600}.back-btn:hover{color:var(--primary-dark);text-decoration:underline}.btn-primary{background:var(--primary);color:#fff;border:none;border-radius:8px;padding:8px 18px;font-size:14px;font-weight:600;transition:background .15s,transform .1s}.btn-primary:hover{background:var(--primary-dark)}.btn-primary:active{transform:scale(.97)}.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:8px 18px;font-size:14px;font-weight:500;transition:background .15s,border-color .15s}.btn-secondary:hover{background:var(--bg);border-color:var(--primary);color:var(--primary)}.btn-danger{color:var(--red);background:#fef2f2;border:1px solid #fecaca;border-radius:8px;padding:8px 18px;font-size:14px;font-weight:500;transition:background .15s}.btn-danger:hover{background:#fee2e2}.btn-ghost{border:1px dashed var(--border);color:var(--primary);text-align:center;background:0 0;border-radius:8px;width:100%;padding:6px 12px;font-size:13px;font-weight:500;transition:border-color .15s,background .15s}.btn-ghost:hover{border-color:var(--primary);background:var(--primary-light)}.calendar-container{flex-direction:column;flex:1;padding:16px;display:flex;overflow:hidden}.google-dropdown{position:relative}.google-dropdown-trigger.connected{color:#10b981;border-color:#10b981}.google-dropdown-trigger.connected:hover{background:#10b98114}.google-dropdown-menu{background:var(--surface);border:1px solid var(--border);min-width:180px;box-shadow:var(--shadow);z-index:100;border-radius:8px;position:absolute;top:calc(100% + 6px);right:0;overflow:hidden}.dropdown-item{text-align:left;width:100%;color:var(--text);cursor:pointer;background:0 0;border:none;padding:9px 14px;font-size:13px;font-weight:500;transition:background .1s;display:block}.dropdown-item:hover{background:var(--bg)}.dropdown-divider{background:var(--border-light);height:1px;margin:2px 0}.google-status-banner{color:#0f766e;background:#ecfeff;border:1px solid #a5f3fc;border-radius:8px;margin-bottom:10px;padding:10px 12px;font-size:13px;font-weight:600}.cal-wrapper{background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:12px;flex-direction:column;flex:1;display:flex;overflow:hidden}.cal-nav{border-bottom:1px solid var(--border);flex-shrink:0;align-items:center;gap:8px;padding:10px 12px;display:flex}.cal-month-label{text-align:center;color:var(--text);flex:1;font-size:14px;font-weight:600}.cal-header{border-bottom:2px solid var(--border);background:var(--surface);flex-shrink:0;grid-template-columns:56px repeat(7,1fr);display:grid}.cal-gutter-header{border-right:1px solid var(--border)}.cal-day-header{text-align:center;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;border-right:1px solid var(--border-light);flex-direction:column;align-items:center;gap:2px;padding:8px;font-size:12px;font-weight:700;display:flex}.cal-day-num{letter-spacing:0;text-transform:none;font-size:16px;font-weight:600;line-height:1}.cal-today-header .cal-day-num{background:var(--primary);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:26px;height:26px;display:flex}.cal-day-header:last-child{border-right:none}.cal-today-header{color:var(--primary)}.cal-scroll{flex:1;overflow:hidden auto}.cal-body{grid-template-columns:56px repeat(7,1fr);display:grid}.cal-gutter{border-right:1px solid var(--border);flex-shrink:0}.cal-time-label{color:var(--muted);border-top:1px solid var(--border-light);justify-content:flex-end;align-items:flex-start;padding:4px 8px 0;font-size:10px;font-weight:600;display:flex}.cal-day-col{border-right:1px solid var(--border-light);cursor:crosshair;transition:background .1s;position:relative}.cal-day-col:last-child{border-right:none}.cal-day-col:hover{background:#6366f105}.cal-today-col{background:#6366f108}.cal-today-col:hover{background:#6366f10d}.cal-hour-row{border-top:1px solid var(--border-light);pointer-events:none}.cal-event{cursor:grab;z-index:5;-webkit-user-select:none;user-select:none;border-radius:6px;padding:4px 7px;transition:filter .1s,transform .1s,opacity .15s;position:absolute;left:3px;right:3px;overflow:hidden}.cal-event:hover{filter:brightness(1.08);transform:scale(1.01)}.cal-event:active{cursor:grabbing}.cal-event-dragging{opacity:.35}.cal-event-generated{border-left:3px solid #fff9}.cal-event-title{white-space:nowrap;text-overflow:ellipsis;font-size:11px;font-weight:700;line-height:1.4;display:block;overflow:hidden}.cal-event-time{opacity:.85;margin-top:1px;font-size:10px;display:block}.modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:100;background:#0f172a73;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.modal{background:var(--surface);width:100%;max-width:440px;box-shadow:var(--shadow-lg);border-radius:16px;max-height:90vh;padding:24px;overflow-y:auto}.modal-lg{max-width:560px}.modal-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.modal-header h2{color:var(--text);margin:0;font-size:18px;font-weight:700}.close-btn{color:var(--muted);background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;width:32px;height:32px;font-size:20px;line-height:1;transition:background .15s;display:flex}.close-btn:hover{background:var(--bg);color:var(--text)}.form-group{flex-direction:column;flex:1;gap:6px;margin-bottom:16px;display:flex}.form-group label{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-size:11px;font-weight:700}.form-group input,.form-group select{border:1px solid var(--border);color:var(--text);background:var(--surface);border-radius:8px;outline:none;padding:9px 12px;font-size:14px;transition:border-color .15s,box-shadow .15s}.form-group input:focus,.form-group select:focus{border-color:var(--primary);box-shadow:0 0 0 3px #6366f11f}.form-row{gap:12px;display:flex}.form-row .form-group{margin-bottom:16px}.modal-actions{border-top:1px solid var(--border);justify-content:space-between;align-items:center;margin-top:8px;padding-top:16px;display:flex}.modal-actions-right{gap:8px;display:flex}.modal-section{padding:16px 0}.generate-body{flex-direction:column;gap:20px;display:flex}.generate-body section h3{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin:0 0 10px;font-size:11px;font-weight:700}.subject-row{align-items:center;gap:8px;margin-bottom:8px;display:flex}.subject-row input[type=text]{border:1px solid var(--border);color:var(--text);border-radius:8px;outline:none;flex:1;padding:8px 12px;font-size:14px;transition:border-color .15s}.subject-row input[type=text]:focus{border-color:var(--primary)}.hours-input{background:var(--bg);border:1px solid var(--border);border-radius:8px;align-items:center;gap:4px;padding:6px 10px;display:flex}.hours-input input{text-align:center;width:44px;color:var(--text);background:0 0;border:none;outline:none;font-size:14px}.hours-input span{color:var(--muted);white-space:nowrap;font-size:12px}.icon-btn{color:var(--muted);background:0 0;border:none;border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:18px;transition:background .15s,color .15s;display:flex}.icon-btn:hover{color:var(--red);background:#fee2e2}.day-selector{flex-wrap:wrap;gap:6px;display:flex}.day-pill{border:1px solid var(--border);background:var(--surface);color:var(--muted);border-radius:20px;flex-direction:column;align-items:center;gap:2px;padding:5px 12px;font-size:12px;font-weight:600;transition:all .15s;display:flex}.day-pill-date{opacity:.75;font-size:10px;font-weight:400}.day-pill.active{background:var(--primary-light);border-color:var(--primary);color:var(--primary-dark)}.day-pill:hover:not(.active){border-color:var(--primary);color:var(--primary)}.week-range-label{color:var(--muted);padding-top:20px;font-size:13px}.preview-list{border:1px solid var(--border);background:var(--bg);border-radius:10px;max-height:200px;overflow-y:auto}.preview-item{border-bottom:1px solid var(--border-light);justify-content:space-between;align-items:center;padding:9px 14px;font-size:13px;display:flex}.preview-item:last-child{border-bottom:none}.preview-title{color:var(--text);font-weight:600}.preview-time{color:var(--muted);font-size:12px}.no-slots{text-align:center;color:var(--muted);padding:20px;font-size:13px}.flashcard-groups{flex-direction:column;gap:14px;display:flex}.flashcard-group{border:1px solid var(--border);background:linear-gradient(#6366f10a,#6366f103);border-radius:12px;padding:12px}.flashcard-group-header{color:var(--text);justify-content:space-between;align-items:center;gap:12px;margin-bottom:10px;font-size:13px;font-weight:700;display:flex}.flashcard-group-header span:last-child{color:var(--muted);font-weight:600}.flashcard-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;display:grid}.flashcard-card{border:1px solid var(--border);background:var(--surface);box-shadow:var(--shadow);border-radius:12px;padding:12px}.flashcard-label{text-transform:uppercase;letter-spacing:.08em;color:var(--primary);margin-bottom:6px;font-size:10px;font-weight:800;display:inline-block}.flashcard-label-back{color:var(--success);margin-top:8px}.flashcard-card p{color:var(--text);margin:0;font-size:13px;line-height:1.45}.flashcard-hint{color:var(--muted);margin-top:8px;font-size:11px;display:block}.schedule-list-container{flex:1;padding:24px;overflow-y:auto}.empty-state{text-align:center;color:var(--muted);flex-direction:column;align-items:center;gap:16px;padding:80px 24px;font-size:15px;display:flex}.event-list{flex-direction:column;gap:28px;max-width:680px;margin:0 auto;display:flex}.event-date-group{flex-direction:column;gap:6px;display:flex}.event-date-header{color:var(--muted);text-transform:uppercase;letter-spacing:.07em;border-bottom:1px solid var(--border-light);margin:0;padding-bottom:6px;font-size:12px;font-weight:700}.event-row{background:var(--surface);border:1px solid var(--border);cursor:pointer;border-left:4px solid;border-radius:8px;justify-content:space-between;align-items:center;gap:12px;padding:11px 14px;transition:background .12s,box-shadow .12s;display:flex}.event-row:hover{background:var(--bg);box-shadow:0 2px 8px #0000000f}.event-row-main{flex:1;align-items:center;gap:10px;min-width:0;display:flex}.event-row-title{color:var(--text);white-space:nowrap;text-overflow:ellipsis;font-size:14px;font-weight:600;overflow:hidden}.event-row-type{color:var(--muted);text-transform:uppercase;letter-spacing:.05em;flex-shrink:0;font-size:11px;font-weight:600}.event-row-time{color:var(--muted);flex-shrink:0;font-size:13px;font-weight:500}.auth-page{background:var(--bg);justify-content:center;align-items:center;min-height:100vh;display:flex}.auth-card{background:var(--surface);width:100%;max-width:400px;box-shadow:var(--shadow-lg);border:1px solid var(--border);border-radius:16px;padding:40px}.auth-title{color:var(--primary);letter-spacing:-.5px;margin:0 0 2px;font-size:28px;font-weight:800}.auth-tagline{color:var(--muted);margin:0 0 24px;font-size:13px}.auth-card h2{color:var(--text);margin:0 0 24px;font-size:20px;font-weight:700}.auth-submit{width:100%;margin-top:4px;padding:11px;font-size:15px}.auth-submit:disabled{opacity:.6;cursor:not-allowed}.auth-error{color:var(--red);background:#fef2f2;border:1px solid #fecaca;border-radius:8px;margin:-4px 0 14px;padding:9px 12px;font-size:13px}.auth-link{text-align:center;color:var(--muted);margin:20px 0 0;font-size:14px}.auth-success{color:var(--success);background:#d1fae5;border:1px solid #a7f3d0;border-radius:8px;margin-bottom:20px;padding:12px 14px;font-size:14px;line-height:1.5}.auth-link a{color:var(--primary);font-weight:600;text-decoration:none}.auth-link a:hover{text-decoration:underline}.auth-loading{height:100vh;color:var(--muted);justify-content:center;align-items:center;font-size:14px;display:flex}.header-email{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;max-width:180px;font-size:13px;overflow:hidden}.btn-signout{color:var(--muted);border:1px solid var(--border);background:0 0;border-radius:8px;padding:8px 14px;font-size:13px;font-weight:500;transition:all .15s}.btn-signout:hover{border-color:var(--red);color:var(--red);background:#fef2f2}.generated-badge{color:var(--success);background:#d1fae5;border-radius:10px;flex-shrink:0;padding:2px 10px;font-size:11px;font-weight:700}.welcome-page{background:var(--bg);flex-direction:column;min-height:100vh;display:flex}.welcome-nav{background:var(--surface);border-bottom:1px solid var(--border);height:64px;box-shadow:var(--shadow);flex-shrink:0;justify-content:space-between;align-items:center;padding:0 40px;display:flex}.welcome-logo{color:var(--primary);letter-spacing:-.5px;font-size:22px;font-weight:800}.welcome-nav-actions{align-items:center;gap:10px;display:flex}.welcome-main{flex-direction:column;flex:1;align-items:center;gap:72px;padding:80px 24px 60px;display:flex}.welcome-hero{text-align:center;flex-direction:column;align-items:center;gap:20px;max-width:620px;display:flex}.welcome-badge{background:var(--primary-light);color:var(--primary-dark);letter-spacing:.04em;text-transform:uppercase;border-radius:20px;align-items:center;padding:5px 14px;font-size:12px;font-weight:700;display:inline-flex}.welcome-headline{color:var(--text);letter-spacing:-1.5px;margin:0;font-size:clamp(40px,6vw,64px);font-weight:800;line-height:1.1}.welcome-subheadline{color:var(--muted);max-width:500px;margin:0;font-size:17px;line-height:1.65}.welcome-cta-group{gap:12px;margin-top:8px;display:flex}.welcome-cta-primary{padding:13px 32px;font-size:15px}.welcome-cta-secondary{padding:13px 28px;font-size:15px}.welcome-features{grid-template-columns:repeat(4,1fr);gap:20px;width:100%;max-width:1100px;display:grid}.welcome-feature-card{background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:16px;flex-direction:column;gap:10px;padding:28px 24px;transition:box-shadow .15s,transform .15s;display:flex}.welcome-feature-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.welcome-feature-icon{font-size:24px;line-height:1}.welcome-feature-title{color:var(--text);margin:0;font-size:15px;font-weight:700}.welcome-feature-desc{color:var(--muted);margin:0;font-size:13px;line-height:1.6}.welcome-footer{text-align:center;color:var(--muted);border-top:1px solid var(--border);background:var(--surface);padding:20px;font-size:12px}