* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #4A90D9;
    --primary-dark: #3A7BC8;
    --danger: #E74C3C;
    --text: #333;
    --text-light: #666;
    --bg: #F5F7FA;
    --white: #FFF;
    --border: #E1E5EB;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

.header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.nav {
    display: flex;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    color: var(--text);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.2s;
}

.nav-link:hover {
    background: var(--bg);
}

.notification-bell {
    position: relative;
    cursor: pointer;
    padding: 8px;
}

.bell-icon {
    font-size: 1.2rem;
}

.badge {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--danger);
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 10px;
    display: none;
}

.badge.show {
    display: block;
}

.notification-panel {
    position: fixed;
    top: 60px;
    right: 16px;
    width: 320px;
    max-height: 400px;
    background: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    display: none;
    z-index: 200;
    overflow: hidden;
}

.notification-panel.show {
    display: block;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
}

.panel-body {
    max-height: 340px;
    overflow-y: auto;
}

.notification-item {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
}

.notification-item.unread {
    background: #F0F7FF;
}

.notification-item:last-child {
    border-bottom: none;
}

.notification-item .title {
    font-weight: 500;
    margin-bottom: 4px;
}

.notification-item .time {
    font-size: 0.8rem;
    color: var(--text-light);
}

.main {
    padding: 24px 16px;
    min-height: calc(100vh - 60px);
}

.btn {
    padding: 8px 16px;
    border: 1px solid var(--border);
    background: var(--white);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.btn:hover {
    background: var(--bg);
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-text {
    background: none;
    border: none;
    color: var(--primary);
    cursor: pointer;
    font-size: 0.9rem;
}

.btn-text:hover {
    text-decoration: underline;
}

.btn-sm {
    padding: 4px 12px;
    font-size: 0.8rem;
}

.btn-danger {
    color: var(--danger);
}

.btn-success {
    background: #27AE60;
    border-color: #27AE60;
    color: white;
}

.btn-success:hover {
    background: #1E8449;
}

.calendar-container {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 20px;
}

.calendar-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.calendar-header h2 {
    flex: 1;
    min-width: 150px;
}

.calendar-grid {
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    background: var(--bg);
}

.calendar-weekdays div {
    padding: 12px;
    text-align: center;
    font-weight: 500;
    color: var(--text-light);
}

.calendar-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
}

.calendar-day {
    min-height: 100px;
    padding: 8px;
    border: 1px solid var(--border);
    border-top: none;
    cursor: pointer;
    transition: background 0.2s;
}

.calendar-day:nth-child(7n+1) {
    border-left: none;
}

.calendar-day:nth-child(7n) {
    border-right: none;
}

.calendar-day:hover {
    background: var(--bg);
}

.calendar-day.empty {
    background: #FAFAFA;
    cursor: default;
}

.calendar-day.today {
    background: #FFF9E6;
}

.day-number {
    font-weight: 500;
    margin-bottom: 4px;
}

.event-item {
    padding: 4px 8px;
    margin: 2px 0;
    border-radius: 4px;
    font-size: 0.8rem;
    color: white;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
    position: relative;
}

.event-time {
    margin-right: 4px;
    opacity: 0.9;
}

.event-title {
    font-weight: 500;
}

.event-item.completed {
    opacity: 0.6;
}

.event-item.completed .event-title {
    text-decoration: line-through;
}

.event-item .status-toggle {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0;
    transition: opacity 0.2s;
    background: rgba(255,255,255,0.9);
    border: none;
    border-radius: 3px;
    padding: 2px 6px;
    font-size: 0.7rem;
    cursor: pointer;
}

.event-item:hover .status-toggle {
    opacity: 1;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 300;
    padding: 16px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--white);
    border-radius: 12px;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-light);
}

form {
    padding: 20px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: normal;
    cursor: pointer;
}

.status-options {
    display: flex;
    gap: 16px;
}

.status-options label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: normal;
    cursor: pointer;
}

.color-picker {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.color-option {
    cursor: pointer;
    position: relative;
}

.color-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.color-box {
    display: inline-block;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: 2px solid transparent;
    transition: all 0.2s;
}

.color-option:hover .color-box {
    transform: scale(1.1);
}

.color-option input[type="radio"]:checked + .color-box {
    border-color: #333;
    box-shadow: 0 0 0 2px #fff, 0 0 0 4px #333;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.admin-container {
    max-width: 1000px;
    margin: 0 auto;
}

.admin-container h1 {
    margin-bottom: 24px;
}

.filter-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-bar input,
.filter-bar select {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
}

.filter-bar input {
    flex: 1;
    min-width: 200px;
}

.data-table {
    width: 100%;
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.data-table th,
.data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    background: var(--bg);
    font-weight: 500;
}

.data-table tr:last-child td {
    border-bottom: none;
}

.color-dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 8px;
}

.status-badge {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
}

.status-badge.active {
    background: #D4EDDA;
    color: #155724;
}

.status-badge.pending {
    background: #FFF3CD;
    color: #856404;
}

.status-badge.completed {
    background: #D4EDDA;
    color: #155724;
}

.empty-hint {
    text-align: center;
    color: var(--text-light);
    padding: 40px !important;
}

.hint {
    color: var(--text-light);
    margin-bottom: 20px;
}

.desktop-only {
    display: block;
}

.mobile-only {
    display: none;
}

.events-desktop {
    display: block;
}

.events-mobile {
    display: none;
}

.event-cards {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.event-card {
    background: var(--white);
    border-radius: 8px;
    padding: 16px;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: transform 0.2s;
}

.event-card:active {
    transform: scale(0.98);
}

.event-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.event-card-title {
    flex: 1;
    font-weight: 500;
    font-size: 1rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.event-card-body {
    margin-bottom: 12px;
}

.event-card-row {
    display: flex;
    padding: 4px 0;
    font-size: 0.9rem;
}

.event-card-row .label {
    color: var(--text-light);
    width: 50px;
    flex-shrink: 0;
}

.event-card-actions {
    display: flex;
    gap: 8px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.email-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 20px;
}

.email-card {
    background: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.email-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
}

.email-card-header h3 {
    margin: 0;
    font-size: 1rem;
}

.email-card-body {
    padding: 16px;
}

.email-card-row {
    display: flex;
    padding: 6px 0;
    font-size: 0.9rem;
}

.email-card-row .label {
    color: var(--text-light);
    width: 100px;
    flex-shrink: 0;
}

.email-card-actions {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    background: var(--bg);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.settings-section {
    background: var(--white);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.settings-section h2 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.switch-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.switch-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg);
    border-radius: 8px;
    cursor: pointer;
}

.switch-label {
    font-weight: 500;
}

.switch-item input {
    display: none;
}

.switch-slider {
    position: relative;
    width: 48px;
    height: 26px;
    background: #ccc;
    border-radius: 13px;
    transition: all 0.3s;
}

.switch-slider::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    left: 3px;
    top: 3px;
    background: white;
    border-radius: 50%;
    transition: all 0.3s;
}

.switch-item input:checked + .switch-slider {
    background: var(--primary);
}

.switch-item input:checked + .switch-slider::before {
    transform: translateX(22px);
}

.config-list {
    margin-top: 16px;
}

.config-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg);
    border-radius: 8px;
    margin-bottom: 8px;
}

.config-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.config-info strong {
    font-weight: 500;
}

.config-detail {
    font-size: 0.85rem;
    color: var(--text-light);
}

.config-actions {
    display: flex;
    gap: 8px;
}

.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 120px);
    padding: 20px;
}

.auth-box {
    background: var(--white);
    border-radius: 12px;
    padding: 32px;
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 400px;
}

.auth-box h1 {
    text-align: center;
    margin-bottom: 24px;
    color: var(--primary);
}

.auth-link {
    text-align: center;
    margin-top: 20px;
    color: var(--text-light);
}

.auth-link a {
    color: var(--primary);
    text-decoration: none;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-name {
    color: var(--text);
    font-weight: 500;
}

.share-badge {
    background: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
}

.share-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 20px;
}

.share-card {
    background: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.share-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
}

.share-card-header h3 {
    margin: 0;
    font-size: 1rem;
}

.share-card-body {
    padding: 16px;
}

.share-url-row {
    display: flex;
    gap: 8px;
}

.share-url-row input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.85rem;
    background: var(--bg);
}

.share-time {
    margin-top: 12px;
    font-size: 0.85rem;
    color: var(--text-light);
}

.share-card-actions {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    background: var(--bg);
}

.share-url-box {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.share-url-box input {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.9rem;
}

.share-hint {
    text-align: center;
    color: var(--text-light);
    font-size: 0.85rem;
}

.modal-sm {
    max-width: 400px;
}

.event-detail {
    padding: 16px;
}

.detail-row {
    display: flex;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-row .label {
    width: 60px;
    color: var(--text-light);
    flex-shrink: 0;
}

.admin-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.admin-card {
    background: var(--white);
    border-radius: 12px;
    padding: 24px;
    text-decoration: none;
    color: var(--text);
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}

.admin-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.admin-card h3 {
    margin-bottom: 8px;
}

.admin-card p {
    color: var(--text-light);
    font-size: 0.9rem;
}

code {
    background: var(--bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    .header .container {
        flex-wrap: wrap;
        height: auto;
        padding: 12px 16px;
    }
    
    .nav {
        order: 3;
        width: 100%;
        justify-content: center;
        margin-top: 12px;
    }
    
    .nav-link {
        padding: 6px 10px;
        font-size: 0.85rem;
    }
    
    .calendar-day {
        min-height: 60px;
        padding: 2px;
    }
    
    .day-number {
        font-size: 0.8rem;
    }
    
    .event-item {
        font-size: 0.65rem;
        padding: 2px 4px;
        margin: 1px 0;
    }
    
    .event-time {
        display: none;
    }
    
    .status-toggle {
        display: none !important;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .calendar-header {
        flex-wrap: wrap;
    }
    
    .calendar-header h2 {
        order: -1;
        width: 100%;
        text-align: center;
        margin-bottom: 12px;
        font-size: 1.1rem;
    }
    
    .calendar-header .btn {
        padding: 6px 10px;
        font-size: 0.85rem;
    }
    
    .calendar-weekdays div {
        padding: 8px 4px;
        font-size: 0.8rem;
    }
    
    .color-picker {
        gap: 6px;
    }
    
    .color-box {
        width: 28px;
        height: 28px;
    }
    
    .modal-content {
        margin: 10px;
        max-height: 85vh;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px;
    }
    
    .filter-bar {
        flex-direction: column;
        gap: 8px;
    }
    
    .filter-bar input,
    .filter-bar select {
        width: 100%;
    }
    
    .desktop-only {
        display: none !important;
    }
    
    .mobile-only {
        display: block !important;
    }
    
    .events-desktop {
        display: none !important;
    }
    
    .events-mobile {
        display: block !important;
    }
    
    .admin-container h1 {
        font-size: 1.3rem;
    }
    
    .checkbox-group {
        gap: 8px;
    }
    
    .checkbox-group label {
        font-size: 0.85rem;
    }
}