/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4a90e2;
    --primary-dark: #357abd;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --background: #f5f5f5;
    --surface: #ffffff;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 6px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

/* Authentication Pages */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.auth-card {
    background: var(--surface);
    padding: 40px;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
}

.auth-card h1 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.auth-card h2 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--text-primary);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-primary);
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s;
}

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

.form-group small {
    display: block;
    margin-top: 5px;
    color: var(--text-secondary);
    font-size: 12px;
}

.form-message {
    margin-top: 15px;
    padding: 10px;
    border-radius: 4px;
    text-align: center;
    display: none;
}

.form-message.error {
    display: block;
    background-color: #fee;
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}

.form-message.success {
    display: block;
    background-color: #efe;
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

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

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

.auth-link a:hover {
    text-decoration: underline;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

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

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

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

.btn-secondary:hover {
    background-color: #5a6268;
}

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

.btn-danger:hover {
    background-color: #c82333;
}

.btn-small {
    padding: 6px 12px;
    font-size: 14px;
}

/* App Container */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    background: var(--surface);
    min-height: 100vh;
    width: 100%;
    overflow-x: hidden;
}

.app-header {
    background: var(--primary-color);
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
}

.app-header h1 {
    font-size: 24px;
}

.header-actions {
    display: flex;
    gap: 10px;
}

.app-main {
    display: flex;
    gap: 20px;
    padding: 20px;
}

/* Sidebar */
.sidebar {
    width: 280px;
    min-width: 280px;
    background: var(--surface);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 15px;
    height: fit-content;
    max-height: calc(100vh - 100px);
    position: sticky;
    top: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.sidebar-header h2 {
    font-size: 18px;
    margin: 0;
}

.sidebar-header .btn {
    padding: 4px 8px;
    font-size: 12px;
}

.sidebar-header .sidebar-close {
    position: absolute;
    top: 0;
    right: 0;
}

.sidebar-content {
    max-height: calc(100vh - 250px);
    overflow-y: auto;
    flex: 1;
}

.sidebar-footer {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.btn-block {
    width: 100%;
    display: block;
}

.folders-list,
.lists-list {
    margin-bottom: 20px;
}

.folders-list h3,
.lists-list h3 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 10px;
    text-transform: uppercase;
    font-weight: 600;
}

.folder-item {
    margin-bottom: 5px;
    border-radius: 4px;
    border-left: 3px solid;
    background: var(--surface);
    overflow: hidden;
}

.list-item {
    padding: 8px 12px;
    margin-bottom: 3px;
    border-radius: 4px;
    border-left: 3px solid;
    cursor: pointer;
    transition: background 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    box-sizing: border-box;
}

.folder-item:hover,
.list-item:hover {
    background: var(--background);
}

.folder-item.active,
.list-item.active {
    background: #2c5f8d !important; /* Darker blue for better contrast */
    color: #ffffff !important;
}

.folder-item.active .folder-header,
.list-item.active {
    background: #2c5f8d !important;
    color: #ffffff !important;
}

/* Force ALL text in active items to be white - very specific selectors */
.folder-item.active span,
.folder-item.active .folder-header span,
.folder-item.active .folder-header *,
.list-item.active span,
.list-item.active * {
    color: #ffffff !important;
}

/* Specific overrides for each element type */
.folder-item.active .folder-toggle {
    color: #ffffff !important;
}

.folder-item.active .folder-name,
.folder-item.active .folder-icon,
.folder-item.active .folder-count,
.list-item.active .list-name,
.list-item.active .list-icon,
.list-item.active .list-count {
    color: white !important;
}

.folder-header {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    cursor: pointer;
    padding: 8px 12px;
    transition: background 0.2s;
}

.folder-header:hover {
    background: var(--background);
}

.folder-toggle {
    width: 16px;
    text-align: center;
    font-size: 10px;
    cursor: pointer;
    user-select: none;
    flex-shrink: 0;
}

.folder-toggle.no-toggle {
    width: 16px;
}

.folder-icon,
.list-icon {
    font-size: 16px;
    color: var(--text-primary);
}

.folder-item.active .folder-icon,
.list-item.active .list-icon {
    color: #ffffff !important;
}

.folder-name,
.list-name {
    flex: 1;
    font-weight: 500;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--text-primary);
}

.folder-item.active .folder-name,
.list-item.active .list-name {
    color: #ffffff !important;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.folder-count,
.list-count {
    font-size: 11px;
    background: rgba(0, 0, 0, 0.1);
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
}

.folder-item.active .folder-count,
.list-item.active .list-count {
    background: rgba(255, 255, 255, 0.3);
    color: white !important;
}

.folder-edit,
.folder-delete,
.list-edit,
.list-delete {
    background: none;
    border: none;
    cursor: pointer;
    padding: 2px 4px;
    font-size: 12px;
    opacity: 0.6;
    transition: opacity 0.2s;
    flex-shrink: 0;
    margin-left: auto;
}

.folder-item.active .folder-edit,
.folder-item.active .folder-delete,
.list-item.active .list-edit,
.list-item.active .list-delete {
    opacity: 0.9;
    filter: brightness(0) invert(1);
}

.folder-count,
.list-count {
    flex-shrink: 0;
    margin-left: auto;
    margin-right: 5px;
}

.folder-edit:hover,
.folder-delete:hover,
.list-edit:hover,
.list-delete:hover {
    opacity: 1;
}

.folder-lists-container {
    padding: 5px 0 5px 25px;
    background: var(--background);
    border-top: 1px solid var(--border-color);
}

.folder-lists-container .list-item {
    margin-left: 0;
    padding-left: 35px;
    font-size: 13px;
    background: rgba(255, 255, 255, 0.5);
}

.folder-lists-container .list-item .list-icon {
    font-size: 14px;
}

.empty-text {
    color: var(--text-secondary);
    font-size: 12px;
    font-style: italic;
    padding: 10px;
}

.content-area {
    flex: 1;
    min-width: 0;
}

/* Todo Form */
.todo-form-section {
    background: var(--surface);
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

/* Floating Action Button */
.fab-button {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    font-size: 32px;
    font-weight: 300;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    line-height: 1;
    padding: 0;
}

.fab-button:hover {
    background: var(--primary-dark);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
    transform: scale(1.1);
}

.fab-button:active {
    transform: scale(0.95);
}

.todo-form .form-row {
    margin-bottom: 20px;
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.todo-form .form-row:last-child {
    margin-bottom: 0;
}

/* Better spacing for modal form */
.modal-content .todo-form .form-row {
    margin-bottom: 20px;
}

.modal-content .todo-form .form-row:last-child {
    margin-bottom: 0;
}

.modal-content .todo-form input[type="text"],
.modal-content .todo-form textarea,
.modal-content .todo-form input[type="datetime-local"],
.modal-content .todo-form input[type="date"],
.modal-content .todo-form input[type="time"],
.modal-content .todo-form input[type="text"][readonly],
.modal-content .todo-form select {
    margin-bottom: 0;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 16px;
    background-color: white;
    transition: border-color 0.3s;
    width: 100%;
    box-sizing: border-box;
}

.modal-content .todo-form input[type="text"][readonly]:focus,
.modal-content .todo-form input[type="date"]:focus,
.modal-content .todo-form input[type="time"]:focus {
    outline: none;
    border-color: var(--primary-color);
}

.modal-content .repeat-options,
.modal-content .reminder-options {
    margin-top: 10px;
    margin-bottom: 20px;
}

/* Date/Time input container styling in modals - ensure horizontal layout */
.modal-content .date-time-container {
    display: flex !important;
    flex-direction: row !important;
    gap: 10px;
    align-items: flex-start;
    width: 100%;
    margin-top: 8px;
}

/* Legacy support for old inline-styled divs (can be removed if all forms use .date-time-container) */
.modal-content .form-group > label + div[style*="display: flex"] {
    display: flex !important;
    flex-direction: row !important;
    gap: 10px;
    align-items: flex-start;
    width: 100%;
    margin-top: 8px;
}

.modal-content .form-group > label + div[style*="display: flex"] > div {
    display: flex;
    flex-direction: column;
    gap: 5px;
    flex: 1;
    min-width: 0;
}

.modal-content .form-group > label + div[style*="display: flex"] > div:first-child {
    min-width: 150px;
}

.modal-content .form-group > label + div[style*="display: flex"] > div:last-child {
    min-width: 120px;
    max-width: 150px;
}

.modal-content .form-group > label + div[style*="display: flex"] input[type="date"],
.modal-content .form-group > label + div[style*="display: flex"] input[type="time"] {
    width: 100%;
    flex-shrink: 0;
}

.modal-content .form-group > label + div[style*="display: flex"] a[href="#"] {
    display: inline-block;
    margin-top: 4px;
    white-space: nowrap;
}

/* Date/Time input containers - consistent styling */
.date-time-container {
    display: flex !important;
    flex-direction: row !important;
    gap: 10px;
    align-items: flex-start;
    width: 100%;
    margin-top: 8px;
}

.date-time-container > div {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.date-time-container > div:first-child {
    flex: 1;
    min-width: 150px;
    max-width: 200px;
}

.date-time-container > div:last-child {
    min-width: 120px;
    max-width: 150px;
}

.date-time-container input[type="date"],
.date-time-container input[type="time"] {
    width: 100%;
    box-sizing: border-box;
}

/* Time input wrapper for placeholder functionality */
.time-input-wrapper {
    position: relative;
    width: 100%;
    display: block;
}

.time-input-wrapper input[type="time"] {
    width: 100%;
    position: relative;
    z-index: 1;
    background-color: white;
}

/* Hide the input text when it has the empty-time class and not focused */
.time-input-wrapper input[type="time"].empty-time:not(:focus) {
    color: transparent;
    caret-color: var(--text-primary); /* Show cursor when focused */
}

/* Show placeholder when input is empty */
.time-placeholder {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    pointer-events: none;
    z-index: 2;
    font-size: 16px;
    line-height: 1.5;
    user-select: none;
    display: none; /* Hidden by default, shown via JavaScript */
}

/* Show placeholder when input has empty-time class and not focused */
.time-input-wrapper input[type="time"].empty-time:not(:focus) ~ .time-placeholder {
    display: block;
}

/* Hide placeholder when focused or when input has a value */
.time-input-wrapper input[type="time"]:focus ~ .time-placeholder,
.time-input-wrapper input[type="time"]:not(.empty-time) ~ .time-placeholder {
    display: none;
}

/* When focused, show the input text */
.time-input-wrapper input[type="time"]:focus {
    color: var(--text-primary);
}

.date-time-container a[href="#"] {
    font-size: 12px;
    color: var(--primary-color);
    text-decoration: none;
    display: inline-block;
    margin-top: 2px;
}

.date-time-container a[href="#"]:hover {
    text-decoration: underline;
}

.todo-form input[type="text"],
.todo-form textarea {
    flex: 1;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 16px;
}

.todo-form textarea {
    min-height: 80px;
    resize: vertical;
}

.todo-form input[type="datetime-local"],
.todo-form input[type="date"],
.todo-form input[type="time"],
.todo-form input[type="text"][readonly],
.todo-form input[type="text"][readonly].flatpickr-input,
.todo-form select {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 16px;
    background-color: white;
    transition: border-color 0.3s;
}

.todo-form input[type="text"][readonly]:focus,
.todo-form input[type="text"][readonly].flatpickr-input:focus,
.todo-form input[type="date"]:focus,
.todo-form input[type="time"]:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Flatpickr styling */
.flatpickr-input {
    background-color: white;
    cursor: pointer;
}

.flatpickr-input:focus {
    border-color: var(--primary-color);
    outline: none;
}

/* Filters */
.filters-section {
    margin-bottom: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.filters,
.priority-filters {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    background: var(--surface);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
}

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

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

/* Todo List */
.todo-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.todo-item {
    background: var(--surface);
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: flex-start;
    gap: 15px;
    transition: transform 0.2s;
}

.todo-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.todo-item.completed {
    opacity: 0.7;
}

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

.todo-checkbox {
    width: 20px;
    height: 20px;
    cursor: pointer;
    margin-top: 2px;
}

.todo-content {
    flex: 1;
}

.todo-title {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 5px;
    color: var(--text-primary);
}

.todo-description {
    color: var(--text-secondary);
    margin-bottom: 10px;
    font-size: 14px;
}

.todo-meta {
    display: flex;
    gap: 15px;
    align-items: center;
    font-size: 14px;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.todo-badges {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

.todo-badge {
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 500;
    color: white;
}

.todo-due-date {
    display: flex;
    align-items: center;
    gap: 5px;
}

.todo-priority {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.priority-low {
    background-color: #d4edda;
    color: #155724;
}

.priority-medium {
    background-color: #fff3cd;
    color: #856404;
}

.priority-high {
    background-color: #f8d7da;
    color: #721c24;
}

.todo-actions {
    display: flex;
    gap: 5px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    overflow: auto;
}

.modal-content {
    background-color: var(--surface);
    margin: 50px auto;
    padding: 30px;
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    position: relative;
    box-shadow: var(--shadow-lg);
}

.modal-content .todo-form {
    margin: 0;
}

.modal-content h2 {
    margin-bottom: 25px;
}

.modal-close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 28px;
    font-weight: bold;
    color: var(--text-secondary);
    cursor: pointer;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-content h2 {
    margin-bottom: 20px;
}

.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state h3 {
    margin-bottom: 10px;
    color: var(--text-primary);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    padding: 5px 10px;
    margin-right: 10px;
}

.sidebar-close {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 28px;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    line-height: 30px;
    text-align: center;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    transition: opacity 0.3s;
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

.sidebar-header-buttons {
    display: flex;
    gap: 5px;
}

/* Responsive Design */
@media (max-width: 768px) {
    html {
        overflow-x: hidden !important;
        width: 100% !important;
        max-width: 100vw !important;
        position: relative;
    }
    
    body {
        overflow-x: hidden !important;
        width: 100% !important;
        max-width: 100vw !important;
        position: relative;
        margin: 0;
        padding: 0;
    }
    
    * {
        max-width: 100vw;
        box-sizing: border-box;
    }
    
    .app-container {
        width: 100% !important;
        max-width: 100vw !important;
        overflow-x: hidden !important;
        margin: 0;
        padding: 0;
    }
    
    .menu-toggle {
        display: block;
        flex-shrink: 0;
    }
    
    .app-header {
        flex-direction: row;
        align-items: center;
        gap: 10px;
        padding: 15px 10px !important;
        width: 100% !important;
        max-width: 100vw !important;
        box-sizing: border-box !important;
        margin: 0;
    }
    
    .app-header h1 {
        flex: 1;
        font-size: 20px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        margin: 0;
        padding: 0;
        min-width: 0;
    }
    
    .app-main {
        flex-direction: column;
        padding: 10px !important;
        gap: 10px;
        width: 100% !important;
        max-width: 100vw !important;
        box-sizing: border-box !important;
        margin: 0;
    }
    
    /* Sidebar - Hidden by default on mobile */
    .sidebar {
        position: fixed !important;
        top: 0;
        left: -100%;
        width: 280px !important;
        max-width: 85vw !important;
        height: 100vh;
        max-height: 100vh;
        z-index: 999;
        border-radius: 0;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.2);
        transition: left 0.3s ease;
        overflow-y: auto;
        overflow-x: hidden !important;
        display: flex;
        flex-direction: column;
        box-sizing: border-box !important;
        padding: 15px !important;
        margin: 0;
    }
    
    .sidebar.open {
        left: 0;
    }
    
    .sidebar-close {
        display: block;
        position: absolute;
        top: 15px;
        right: 15px;
        flex-shrink: 0;
    }
    
    .sidebar-header {
        flex-wrap: wrap;
        padding-right: 40px !important;
        box-sizing: border-box !important;
        width: 100%;
        max-width: 100%;
    }
    
    .sidebar-header h2 {
        width: 100%;
        margin-bottom: 10px;
        max-width: 100%;
    }
    
    .sidebar-header-buttons {
        width: 100%;
        max-width: 100%;
        justify-content: flex-start;
        box-sizing: border-box !important;
    }
    
    .sidebar-content {
        flex: 1;
        overflow-y: auto;
        overflow-x: hidden !important;
        box-sizing: border-box !important;
        min-height: 0;
        max-height: none;
        width: 100%;
        max-width: 100%;
    }
    
    .sidebar-footer {
        box-sizing: border-box !important;
        padding-top: 15px;
        margin-top: auto;
        flex-shrink: 0;
        width: 100%;
        max-width: 100%;
    }
    
    .sidebar-footer .btn {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box !important;
    }
    
    .content-area {
        width: 100% !important;
        max-width: 100vw !important;
        box-sizing: border-box !important;
        overflow-x: hidden !important;
        padding: 0 !important;
        margin: 0;
    }
    
    .todo-form-section,
    .todos-section {
        width: 100% !important;
        max-width: 100vw !important;
        box-sizing: border-box !important;
        overflow-x: hidden !important;
        padding: 15px !important;
        margin: 0;
    }
    
    .todo-form-section > *,
    .todos-section > * {
        max-width: 100% !important;
        box-sizing: border-box !important;
    }
    
    .todo-form {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 0;
        margin: 0;
    }
    
    .todo-form .form-row {
        flex-direction: column;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin: 0;
        padding: 0;
    }
    
    .todo-form input,
    .todo-form select,
    .todo-form textarea,
    .todo-form button {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }
    
    /* Keep date and time inputs horizontal even on mobile, but allow wrapping if needed */
    .date-time-container {
        flex-direction: row !important;
        flex-wrap: wrap !important;
        gap: 10px !important;
    }
    
    .date-time-container > div {
        flex: 1 1 auto !important;
        min-width: 140px !important;
        max-width: calc(50% - 5px) !important;
    }
    
    .date-time-container > div:first-child,
    .date-time-container > div:last-child {
        max-width: calc(50% - 5px) !important;
    }
    
    .form-row {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin: 0;
        padding: 0;
    }
    
    .form-group {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-bottom: 15px;
        padding: 0;
    }
    
    .todo-item {
        flex-direction: column;
        align-items: flex-start;
        width: 100% !important;
        max-width: 100vw !important;
        box-sizing: border-box !important;
        padding: 10px !important;
        margin: 0;
        overflow-x: hidden !important;
    }
    
    .todo-item .todo-title {
        white-space: normal;
        word-wrap: break-word;
        overflow-wrap: break-word;
        max-width: 100% !important;
        width: 100%;
        box-sizing: border-box !important;
    }
    
    .todo-item .todo-info {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }
    
    .todo-actions {
        width: 100% !important;
        max-width: 100% !important;
        justify-content: flex-end;
        margin-top: 10px;
        box-sizing: border-box !important;
    }
    
    .filters-section {
        flex-direction: column;
        align-items: stretch;
        width: 100% !important;
        max-width: 100vw !important;
        box-sizing: border-box !important;
        padding: 0;
        margin: 0;
    }
    
    .filters,
    .priority-filters {
        justify-content: center;
        flex-wrap: wrap;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 0;
        margin: 0;
    }
    
    .filter-btn {
        box-sizing: border-box !important;
        max-width: 100%;
    }
    
    .modal-content {
        width: 95% !important;
        max-width: 95vw !important;
        margin: 20px auto;
        padding: 20px !important;
        box-sizing: border-box !important;
    }
    
    .fab-button {
        bottom: 20px;
        right: 20px;
        width: 56px;
        height: 56px;
        font-size: 28px;
    }
    
    /* Prevent any element from causing overflow */
    img, video, iframe, embed, object, svg {
        max-width: 100% !important;
        height: auto;
    }
    
    table {
        width: 100% !important;
        max-width: 100% !important;
        table-layout: fixed;
    }
}

/* Repeat Options */
.repeat-options,
.reminder-options {
    margin-top: 10px;
    margin-bottom: 20px;
    padding: 15px;
    background: var(--background);
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.repeat-options label,
.reminder-options label {
    display: inline-block;
    margin-right: 15px;
    cursor: pointer;
}

.repeat-options input[type="checkbox"],
.reminder-options input[type="checkbox"] {
    margin-right: 5px;
}

/* Checkbox labels in form rows - only affect labels that contain checkboxes */
.todo-form .form-row > label,
.modal-content .form-group > label {
    display: flex !important;
    align-items: center !important;
    gap: 8px !important;
    cursor: pointer;
    margin: 0 !important;
    padding: 0 !important;
    flex: 0 0 auto;
    line-height: 1.4 !important;
    white-space: nowrap;
}

.todo-form .form-row > label input[type="checkbox"],
.modal-content .form-group > label input[type="checkbox"] {
    margin: 0 !important;
    padding: 0 !important;
    flex-shrink: 0 !important;
    width: 18px !important;
    height: 18px !important;
    min-width: 18px !important;
    min-height: 18px !important;
    max-width: 18px !important;
    max-height: 18px !important;
    cursor: pointer;
    vertical-align: middle;
    order: -1 !important;
    position: relative;
    top: 0;
    left: 0;
    align-self: center;
}

.todo-form .form-row > label::after,
.modal-content .form-group > label::after {
    content: '';
    display: none;
}

/* Custom days container - display days horizontally */
#customDays,
#customDaysModal {
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: wrap !important;
    gap: 10px !important;
    align-items: center !important;
}

#customDays > label,
#customDaysModal > label {
    display: flex !important;
    align-items: center !important;
    gap: 5px !important;
    margin: 0 !important;
    padding: 0 !important;
    white-space: nowrap !important;
    flex: 0 0 auto !important;
}

#customDays > label input[type="checkbox"],
#customDaysModal > label input[type="checkbox"] {
    margin: 0 !important;
    padding: 0 !important;
    flex-shrink: 0 !important;
    width: 16px !important;
    height: 16px !important;
    min-width: 16px !important;
    min-height: 16px !important;
    max-width: 16px !important;
    max-height: 16px !important;
    cursor: pointer;
    order: -1 !important;
}

/* PWA Install Prompt */
.pwa-install-prompt {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--surface);
    padding: 15px;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    display: none;
    z-index: 999;
}

.pwa-install-prompt.show {
    display: block;
}

.pwa-install-prompt button {
    margin-top: 10px;
}

/* Repeat Badge */
.todo-repeat-badge {
    display: inline-block;
    padding: 2px 8px;
    background: #e3f2fd;
    color: #1976d2;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 500;
    margin-left: 8px;
}