:root{--primary: #4F46E5;--primary-hover: #4338CA;--private-event: #3B82F6;--group-event: #10B981;--background: #F9FAFB;--surface: #FFFFFF;--text-primary: #111827;--text-secondary: #6B7280;--border: #E5E7EB;--danger: #EF4444;--danger-hover: #DC2626;--radius: 8px;--shadow: 0 1px 3px rgba(0, 0, 0, .1)}.dark{--primary: #818CF8;--primary-hover: #6366F1;--private-event: #60A5FA;--group-event: #34D399;--background: #111827;--surface: #1F2937;--text-primary: #F9FAFB;--text-secondary: #9CA3AF;--border: #374151;--danger: #F87171;--danger-hover: #EF4444;--shadow: 0 1px 3px rgba(0, 0, 0, .3)}.dark body{background:var(--background);color:var(--text-primary)}.dark .calendar,.dark .auth-form,.dark .group-card,.dark .member,.dark .month-grid,.dark .month-day{background:var(--surface)}.dark .form-group input,.dark .form-group textarea,.dark .form-group select{background:var(--surface);color:var(--text-primary);border-color:var(--border)}.dark .cancel-btn{background:var(--border);color:var(--text-primary)}.dark .form-group.checkbox-group input[type=checkbox]{background:var(--surface)}.dark .modal-overlay{background:#000000b3}.dark .invite-link input{background:var(--surface);color:var(--text-primary);border-color:var(--border)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--background);color:var(--text-primary);line-height:1.5;min-height:100vh}.app{min-height:100vh;display:flex;flex-direction:column;padding-bottom:60px}.page{flex:1;padding:16px}.page-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}.page-header h1{font-size:24px;font-weight:600}.loading{display:flex;justify-content:center;align-items:center;height:200px;color:var(--text-secondary)}@keyframes fadeSlideIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeSlideInUp{0%{opacity:0;transform:translateY(40px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-30px)}to{opacity:1;transform:translate(0)}}.page{animation:fadeSlideIn .4s ease-out forwards}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.auth-container{animation:scaleIn .4s ease-out forwards}.auth-form{animation:fadeSlideInUp .5s ease-out forwards;animation-delay:.1s;opacity:0}.auth-container{width:100%;max-width:400px}.auth-container h1{text-align:center;margin-bottom:24px;color:var(--primary)}.auth-form{background:var(--surface);padding:24px;border-radius:var(--radius);box-shadow:var(--shadow)}.auth-form h2{font-size:20px;margin-bottom:20px}.auth-success{text-align:center;padding:40px 20px}.auth-success h2{color:var(--group-event);margin-bottom:12px}.auth-switch{text-align:center;margin-top:16px;color:var(--text-secondary)}.auth-switch a{color:var(--primary);text-decoration:none}.auth-switch a:hover{text-decoration:underline}.form-group{margin-bottom:16px}.form-group label{display:block;margin-bottom:6px;font-weight:500;font-size:14px;color:var(--text-primary)}.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:10px;font-size:15px;background:var(--surface);color:var(--text-primary);transition:all .2s ease}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #4f46e526}.form-group input::placeholder,.form-group textarea::placeholder{color:var(--text-secondary)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.form-row .form-group input[type=datetime-local],.form-row .form-group input[type=date]{padding:10px 12px;font-size:14px}.form-group input[type=date],.form-group input[type=datetime-local]{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:10px;font-size:15px;background:var(--surface);color:var(--text-primary);transition:all .2s ease;cursor:pointer}.form-group input[type=date]:focus,.form-group input[type=datetime-local]:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #4f46e526}.form-group.checkbox-group{display:flex;align-items:center;margin-bottom:20px}.form-group.checkbox-group label{display:flex;align-items:center;gap:10px;cursor:pointer;margin-bottom:0;font-weight:500}.color-picker{display:flex;gap:10px;flex-wrap:wrap}.color-option{width:40px;height:32px;border-radius:6px;border:2px solid transparent;cursor:pointer;transition:all .2s ease;position:relative;-webkit-tap-highlight-color:transparent;touch-action:manipulation}.color-option:hover{transform:scale(1.05)}.color-option:active{transform:scale(.95)}.color-option.selected{border-color:var(--text-primary);box-shadow:0 0 0 2px var(--background),0 0 0 4px var(--primary)}.form-group.checkbox-group input[type=checkbox]{width:20px;height:20px;border-radius:6px;border:2px solid var(--border);background:var(--surface);cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;position:relative;transition:all .2s ease;padding:0;margin:0}.form-group.checkbox-group input[type=checkbox]:checked{background:var(--primary);border-color:var(--primary)}.form-group.checkbox-group input[type=checkbox]:checked:after{content:"";position:absolute;left:6px;top:2px;width:5px;height:10px;border:solid white;border-width:0 2px 2px 0;transform:rotate(45deg)}.form-group.checkbox-group input[type=checkbox]:hover{border-color:var(--primary)}.form-group.checkbox-group input[type=checkbox]:disabled{opacity:.5;cursor:not-allowed}.error{color:var(--danger);font-size:14px;margin-bottom:12px;padding:10px;background:#fee2e2;border-radius:var(--radius)}.success{color:var(--group-event);font-size:14px;margin-bottom:12px;padding:10px;background:#d1fae5;border-radius:var(--radius)}button{cursor:pointer;border:none;padding:12px 20px;border-radius:var(--radius);font-size:16px;font-weight:500;transition:background .2s}button:disabled{opacity:.6;cursor:not-allowed}.primary-btn,.save-btn{background:var(--primary);color:#fff}.primary-btn:hover,.save-btn:hover:not(:disabled){background:var(--primary-hover)}.danger-btn{background:var(--danger);color:#fff}.danger-btn:hover:not(:disabled){background:var(--danger-hover)}.calendar{background:var(--surface);border-radius:12px;box-shadow:0 4px 20px #00000014;overflow:hidden;animation:fadeSlideInUp .5s ease-out forwards;animation-delay:.1s;opacity:0;touch-action:pan-y pinch-zoom}@media (max-width: 768px){.calendar{touch-action:pan-y pinch-zoom;-webkit-overflow-scrolling:touch}}.calendar-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border);gap:16px;flex-wrap:wrap}.calendar-nav{display:flex;align-items:center;gap:8px}.calendar-header .nav-btn{padding:8px;background:transparent;border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);transition:all .2s ease}.calendar-header .nav-btn:hover{background:var(--primary);color:#fff}.calendar-header .nav-btn svg{width:20px;height:20px}.calendar-header .today-btn{padding:8px 16px;font-size:14px;font-weight:500;background:var(--primary);color:#fff;border-radius:8px;transition:all .2s ease}.calendar-header .today-btn:hover{background:var(--primary-hover);transform:translateY(-1px)}.current-period{flex:1;text-align:center}.current-period .date{font-size:20px;font-weight:700;color:var(--text-primary);letter-spacing:-.5px}.view-toggle{display:flex;gap:4px;background:var(--background);padding:4px;border-radius:10px}.view-toggle button{padding:8px 16px;font-size:14px;font-weight:500;background:transparent;color:var(--text-secondary);border-radius:8px;transition:all .2s ease}.view-toggle button:hover{color:var(--text-primary)}.view-toggle button.active{background:var(--surface);color:var(--primary);box-shadow:0 2px 8px #0000001a}.week-view{overflow-x:auto}.week-header{display:grid;grid-template-columns:repeat(7,1fr);border-bottom:1px solid var(--border);background:var(--background)}.multi-day-events{display:grid;grid-template-columns:repeat(7,1fr);gap:2px;padding:4px 8px;background:var(--background);border-bottom:1px solid var(--border)}.multi-day-event{padding:4px 8px;font-size:12px;font-weight:500;border-left:3px solid;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;display:block}.day-header{padding:14px 8px;text-align:center;font-size:12px;border-bottom:2px solid transparent}.day-header.today{background:#4f46e51a;border-bottom-color:var(--primary)}.day-name{display:block;color:var(--text-secondary);text-transform:uppercase;font-weight:600;font-size:11px;letter-spacing:.5px;margin-bottom:4px}.day-number{display:block;font-size:20px;font-weight:600;color:var(--text-primary)}.day-header.today .day-number{background:var(--primary);color:#fff;width:32px;height:32px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;line-height:1}.week-body{display:grid;grid-template-columns:repeat(7,1fr);min-height:500px}.day-column{border-right:1px solid var(--border);padding:8px;min-height:120px;cursor:pointer;transition:background .15s ease;overflow:hidden}.day-column:last-child{border-right:none}.day-column.today{background:#4f46e50d}.day-column:hover{background:var(--background)}.day-view{padding:20px}.day-header-single{text-align:center;margin-bottom:20px}.day-header-single .day-name{display:block;font-size:14px;color:var(--text-secondary);text-transform:uppercase;font-weight:600;letter-spacing:.5px}.day-header-single .day-number{display:block;font-size:28px;font-weight:700;color:var(--text-primary);margin-top:4px}.all-day-events{display:flex;align-items:flex-start;padding:12px 16px;background:linear-gradient(135deg,#4f46e514,#4f46e50a);border-radius:10px;margin-bottom:16px;cursor:pointer}.all-day-events:hover{background:linear-gradient(135deg,#4f46e51f,#4f46e50f)}.all-day-label{font-size:12px;font-weight:600;color:var(--primary);text-transform:uppercase;letter-spacing:.5px;min-width:60px;padding-top:6px}.all-day-content{flex:1;display:flex;flex-wrap:wrap;gap:8px}.all-day-events .event{display:inline-flex;align-items:center;padding:6px 12px;font-weight:500}.day-body{display:flex;flex-direction:column;max-height:600px;overflow-y:auto;border-radius:10px;border:1px solid var(--border)}.hour-row{display:flex;min-height:60px;border-bottom:1px solid var(--border)}.hour-label{width:60px;padding:4px 8px;font-size:12px;color:var(--text-secondary);flex-shrink:0}.hour-content{flex:1;padding:2px;cursor:pointer}.hour-content:hover{background:var(--background)}.month-view{padding:20px}.month-header{display:grid;grid-template-columns:repeat(7,1fr);gap:1px;margin-bottom:12px}.month-day-name{text-align:center;font-weight:600;font-size:12px;color:var(--text-secondary);padding:8px}.month-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.month-day{background:var(--surface);min-height:100px;padding:4px;cursor:pointer;overflow:hidden}.month-day:hover,.month-day.other-month{background:var(--background)}.month-day.other-month .day-number{color:var(--text-secondary)}.month-day.today{background:#4f46e51a}.month-day .day-number{font-size:14px;font-weight:500;margin-bottom:4px}.month-day.today .day-number{background:var(--primary);color:#fff;width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center}.day-events{display:flex;flex-direction:column;gap:2px;max-width:100%;overflow:hidden}.month-event{font-size:11px;padding:2px 4px;border-radius:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:pointer;max-width:100%;display:block}.month-event.private{background:#3b82f633;color:var(--private-event)}.month-event.group{background:#10b98133;color:var(--group-event)}.more-events{font-size:10px;color:var(--text-secondary);padding:2px 4px}.event{padding:6px 8px;border-radius:6px;font-size:12px;margin-bottom:4px;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:500;transition:all .15s ease;max-width:100%;display:block}.event.private{background:linear-gradient(135deg,#3b82f633,#3b82f61a);color:var(--private-event);border-left:3px solid var(--private-event)}.event.group{background:linear-gradient(135deg,#10b98133,#10b9811a);color:var(--group-event);border-left:3px solid var(--group-event)}.event:hover{transform:translate(2px);box-shadow:0 2px 8px #0000001a}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:20px;z-index:100}.modal{background:var(--surface);border-radius:16px;width:100%;max-width:520px;max-height:90vh;overflow-y:auto;overflow-x:hidden;box-shadow:0 20px 60px #0003}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;border-bottom:1px solid var(--border)}.modal-header h2{font-size:20px;font-weight:600}.close-btn{background:transparent;padding:8px;font-size:24px;line-height:1;color:var(--text-secondary);border-radius:8px;transition:all .2s ease}.close-btn:hover{background:var(--background);color:var(--text-primary)}.modal form{padding:24px}.modal-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:24px;padding-top:16px;border-top:1px solid var(--border)}.delete-btn{background:var(--danger);color:#fff;margin-right:auto;border-radius:8px}.delete-btn:hover:not(:disabled){background:var(--danger-hover)}.modal .save-btn{border-radius:8px;padding:10px 24px}.cancel-btn{background:var(--background);color:var(--text-primary)}.fab{position:fixed;bottom:90px;right:24px;width:64px;height:64px;border-radius:20px;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-hover) 100%);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px #4f46e566;z-index:100;transition:all .3s ease;animation:scaleIn .4s ease-out forwards;animation-delay:.3s;opacity:0}.fab svg{width:28px;height:28px}.fab:hover{background:linear-gradient(135deg,var(--primary-hover) 0%,var(--primary) 100%);transform:scale(1.05) rotate(90deg);box-shadow:0 12px 32px #4f46e580}.bottom-nav{position:fixed;bottom:0;left:0;right:0;display:flex;background:var(--surface);border-top:1px solid var(--border);z-index:50;animation:slideInUp .4s ease-out forwards;animation-delay:.2s;opacity:0}@keyframes slideInUp{0%{opacity:0;transform:translateY(100%)}to{opacity:1;transform:translateY(0)}}.bottom-nav a{flex:1;display:flex;flex-direction:column;align-items:center;padding:12px;color:var(--text-secondary);text-decoration:none;font-size:12px}.bottom-nav a.active{color:var(--primary)}.nav-icon{font-size:20px;margin-bottom:4px}.add-btn{width:40px;height:40px;border-radius:50%;background:var(--primary);color:#fff;font-size:24px;display:flex;align-items:center;justify-content:center;padding:0}.groups-list{display:flex;flex-direction:column;gap:12px}.group-card{display:flex;align-items:center;gap:12px;background:var(--surface);padding:16px;border-radius:var(--radius);box-shadow:var(--shadow);cursor:pointer;transition:all .2s ease}.group-card:hover{background:var(--background);transform:translate(4px);box-shadow:0 4px 12px #0000001a}.group-icon{width:48px;height:48px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:600}.group-info{flex:1}.group-info h3{font-size:16px;font-weight:600}.group-info p{font-size:14px;color:var(--text-secondary)}.group-card .arrow{color:var(--text-secondary);font-size:20px}.empty-state{text-align:center;padding:60px 20px}.empty-state p{color:var(--text-secondary);margin-bottom:20px}.back-btn{background:transparent;padding:8px 12px;font-size:20px}.group-description{color:var(--text-secondary);margin-bottom:20px}.section{margin-bottom:24px}.section h2{font-size:18px;margin-bottom:12px}.members-list{display:flex;flex-direction:column;gap:8px}.member{display:flex;align-items:center;gap:12px;padding:12px;background:var(--surface);border-radius:var(--radius)}.member-avatar{width:40px;height:40px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600}.member-info{display:flex;flex-direction:column}.member-name{font-weight:500}.member-role{font-size:12px;color:var(--text-secondary);text-transform:capitalize}.section.actions{display:flex;flex-direction:column;gap:12px}.invite-content{padding:20px}.invite-content p{margin-bottom:16px;color:var(--text-secondary)}.invite-link{display:flex;gap:8px}.invite-link input{flex:1;padding:10px;border:1px solid var(--border);border-radius:var(--radius);font-size:14px;background:var(--background)}.copy-btn{padding:10px 16px;background:var(--primary);color:#fff}.invite-note{font-size:12px;margin-top:12px}.profile-section{margin-bottom:24px;text-align:center}.user-avatar{width:80px;height:80px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:32px;font-weight:600;margin:0 auto 12px}.user-email{color:var(--text-secondary)}.profile-form{max-width:400px;margin:0 auto}.profile-form button{width:100%}.profile-section.danger{border-top:1px solid var(--border);padding-top:24px}.profile-section.danger button{width:100%}.success-message{text-align:center;padding:60px 20px}.success-message h2{color:var(--group-event);margin-bottom:12px}.error-message{text-align:center;padding:60px 20px}.error-message h2{color:var(--danger);margin-bottom:12px}.error-message .primary-btn{display:inline-block;margin-top:20px;text-decoration:none}.auth-required{text-align:center;padding:60px 20px}.auth-required p{margin-bottom:20px;color:var(--text-secondary)}.auth-required .primary-btn{display:inline-block;text-decoration:none}@media (min-width: 768px){.app{max-width:800px;margin:0 auto}.page{padding:24px}}