/* styles.css */
:root {
    --primary-color: #4361ee;
    --primary-light: #4895ef;
    --primary-dark: #3a56d4;
    --secondary-color: #3f37c9;
    --accent-color: #e50e0e;
    --accent-hover: #c70b0b;
    --text-color: #333;
    --text-light: #666;
    --bg-color: #f8f9fa;
    --bg-light: #ffffff;
    --bg-dark: #e9ecef;
    --border-color: #dee2e6;
    --completed-color: #adb5bd;
    --shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 15px 30px rgba(0, 0, 0, 0.1);
    --calendar-selected: #4361ee;
    --calendar-today: #4895ef;
    --calendar-has-tasks: #e50e0e;
    --error-color: #dc3545;
    --success-color: #28a745;
    --section-gap: 30px;
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --transition: all 0.3s ease;
    --container-padding: 24px;
    --mobile-container-padding: 16px;
}

.dark-theme {
    --primary-color: #6c5ce7;
    --primary-light: #6c5ce7;
    --primary-dark: #5c4dd4;
    --secondary-color: #7209b7;
    --accent-color: #e50e0e;
    --accent-hover: #c70b0b;
    --text-color: #f8f9fa;
    --text-light: #e9ecef;
    --bg-color: #121212;
    --bg-light: #1e1e1e;
    --bg-dark: #2d2d2d;
    --border-color: #333;
    --completed-color: #6c757d;
    --shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    --shadow-hover: 0 15px 30px rgba(0, 0, 0, 0.3);
    --calendar-selected: #4cc9f0;
    --calendar-today: #4895ef;
    --calendar-has-tasks: #e50e0e;
    --error-color: #f06060;
    --success-color: #60bf80;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

html {
    overflow-x: hidden;
    width: 100%;
    max-width: 100%;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: var(--transition);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
    width: 100%;
    max-width: 100%;
    position: relative;
    font-size: 16px;
}

/* Auth Styles */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-color));
    width: 100%;
    overflow-x: hidden;
    box-sizing: border-box;
}

.auth-card {
    width: 100%;
    max-width: 450px;
    background-color: var(--bg-light);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

.auth-header {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px 0 10px;
    gap: 12px;
}

.auth-header h1 {
    font-size: 24px;
    color: var(--primary-color);
    font-weight: 600;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.auth-logo {
    width: 36px;
    height: 36px;
}

.auth-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.auth-tab {
    flex: 1;
    background: none;
    border: none;
    padding: 18px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
}

.auth-tab.active {
    color: var(--primary-color);
    border-bottom: 3px solid var(--primary-color);
}

.auth-form {
    padding: 30px;
    width: 100%;
    box-sizing: border-box;
}

.auth-form h2 {
    margin-bottom: 25px;
    font-weight: 600;
    color: var(--primary-color);
    text-align: center;
    font-size: 24px;
}

.reset-info {
    text-align: center;
    margin-bottom: 20px;
    color: var(--text-light);
    font-size: 14px;
}

.form-group {
    margin-bottom: 24px;
    width: 100%;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
    font-size: 15px;
}

.form-group input {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 16px;
    background-color: var(--bg-light);
    color: var(--text-color);
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

.form-group input::placeholder {
    color: var(--text-light);
    opacity: 0.7;
}

/* Password visibility toggle */
.password-group {
    position: relative;
}

.password-input-container {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: var(--text-light);
    z-index: 10;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.password-toggle:hover {
    color: var(--primary-color);
}

.auth-button {
    width: 100%;
    padding: 15px;
    margin-top: 10px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.auth-button:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.auth-button:active {
    transform: translateY(0);
    box-shadow: none;
}

.auth-button i {
    font-size: 18px;
}

.forgot-password, .back-to-login {
    text-align: center;
    margin-top: 20px;
    color: var(--primary-color);
    cursor: pointer;
    font-size: 14px;
    display: block;
    padding: 5px;
}

.back-to-login {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.forgot-password:hover, .back-to-login:hover {
    text-decoration: underline;
}

.auth-error {
    color: var(--error-color);
    font-size: 14px;
    margin-top: 15px;
    text-align: center;
    padding: 10px;
    background-color: rgba(220, 53, 69, 0.1);
    border-radius: var(--border-radius-sm);
    display: none;
}

.auth-error:not(:empty) {
    display: block;
}

.auth-success {
    color: var(--success-color);
    font-size: 14px;
    margin-top: 15px;
    text-align: center;
    padding: 10px;
    background-color: rgba(40, 167, 69, 0.1);
    border-radius: var(--border-radius-sm);
    display: none;
}

.auth-success:not(:empty) {
    display: block;
}

.auth-message {
    font-size: 14px;
    margin-top: 15px;
    text-align: center;
    padding: 10px;
    border-radius: var(--border-radius-sm);
}

/* Notification Toast */
.notification-toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--bg-light);
    color: var(--text-color);
    padding: 15px 20px;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 350px;
    z-index: 9999;
    transform: translateY(150%);
    transition: transform 0.3s ease;
    width: calc(100% - 60px);
    box-sizing: border-box;
}

.notification-toast.show {
    transform: translateY(0);
}

.notification-toast.success {
    border-left: 4px solid var(--success-color);
}

.notification-toast.error {
    border-left: 4px solid var(--error-color);
}

.notification-toast.success #notification-icon {
    color: var(--success-color);
}

.notification-toast.error #notification-icon {
    color: var(--error-color);
}

.notification-content {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    min-width: 0;
}

.notification-content i {
    font-size: 20px;
    flex-shrink: 0;
}

.notification-content span {
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 14px;
}

.close-notification {
    background: none;
    border: none;
    font-size: 16px;
    cursor: pointer;
    color: var(--text-light);
    margin-left: 15px;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
    flex-shrink: 0;
}

.close-notification:hover {
    background-color: var(--bg-dark);
    color: var(--accent-color);
}

/* App Styles */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
    box-sizing: border-box;
    overflow-x: hidden;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--section-gap);
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    width: 100%;
}

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

.app-logo {
    width: 32px;
    height: 32px;
}

header h1 {
    font-size: 28px;
    font-weight: 600;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-info-wrapper {
    flex: 1;
    max-width: 100%;
    overflow: hidden;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-light);
    background-color: var(--bg-dark);
    padding: 8px 15px;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    word-break: break-all;
}

.user-info i {
    font-size: 16px;
    color: var(--primary-light);
    flex-shrink: 0;
}

#user-email {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 100%;
}

.theme-toggle {
    cursor: pointer;
    font-size: 22px;
    color: var(--text-color);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
    background-color: var(--bg-dark);
    flex-shrink: 0;
}

.theme-toggle:hover {
    background-color: var(--primary-light);
    color: white;
    transform: rotate(15deg);
}

.logout-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    padding: 10px 15px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
    white-space: nowrap;
}

.logout-btn:hover {
    background-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.logout-btn:active {
    transform: translateY(0);
    box-shadow: none;
}

main {
    display: grid;
    grid-template-columns: minmax(320px, 1fr) minmax(350px, 1.5fr);
    gap: var(--section-gap);
    margin-bottom: var(--section-gap);
    width: 100%;
}

.calendar-container, .tasks-container, .common-tasks-container {
    background-color: var(--bg-light);
    border-radius: var(--border-radius-lg);
    padding: 25px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    width: 100%;
    box-sizing: border-box;
}

.calendar-container:hover, .tasks-container:hover, .common-tasks-container:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
}

.calendar-container {
    min-width: 0;
    overflow: hidden;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    width: 100%;
}

.month-nav {
    background-color: var(--bg-dark);
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: var(--text-color);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.month-nav:hover {
    background-color: var(--primary-light);
    color: white;
    transform: scale(1.1);
}

.month-nav:active {
    transform: scale(1);
}

#month-year {
    font-size: 22px;
    font-weight: 600;
    color: var(--primary-color);
    text-align: center;
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding: 0 15px;
}

.weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    text-align: center;
    font-weight: 500;
    margin-bottom: 15px;
    color: var(--text-light);
    width: 100%;
}

.weekdays div {
    padding: 8px 0;
    font-size: 14px;
}

.days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
    width: 100%;
}

.day {
    aspect-ratio: 1/1;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    border-radius: 50%;
    position: relative;
    font-weight: 500;
    transition: var(--transition);
}

.day:hover {
    background-color: var(--bg-dark);
    transform: scale(1.1);
}

.day.today {
    background-color: var(--calendar-today);
    color: white;
    font-weight: 600;
}

.day.selected {
    background-color: var(--calendar-selected);
    color: white;
    transform: scale(1.1);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    z-index: 1;
    font-weight: 600;
}

.day.other-month {
    color: var(--completed-color);
    opacity: 0.6;
}

.day.has-tasks::after {
    content: '';
    position: absolute;
    bottom: 5px;
    width: 6px;
    height: 6px;
    background-color: var(--calendar-has-tasks);
    border-radius: 50%;
}

.date-display {
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    width: 100%;
}

#selected-date {
    font-size: 22px;
    font-weight: 600;
    color: var(--primary-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.task-input {
    display: flex;
    margin-bottom: 25px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border-radius: var(--border-radius-md);
    width: 100%;
}

.task-input input {
    flex: 1;
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-md) 0 0 var(--border-radius-md);
    font-size: 16px;
    background-color: var(--bg-light);
    color: var(--text-color);
    transition: var(--transition);
    min-width: 0;
}

.task-input input::placeholder {
    color: var(--text-light);
    opacity: 0.7;
}

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

.task-input button {
    min-width: 60px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.task-input button:hover {
    background-color: var(--primary-dark);
}

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

.task-filters {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
    flex-wrap: wrap;
    width: 100%;
}

.filter-btn, .common-filter-btn {
    padding: 10px 15px;
    background-color: var(--bg-dark);
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    flex: 1;
    min-width: 80px;
    text-align: center;
    font-size: 14px;
}

.filter-btn:hover, .common-filter-btn:hover {
    transform: translateY(-2px);
    background-color: var(--primary-light);
    color: white;
}

.filter-btn.active, .common-filter-btn.active {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

#clear-completed, #clear-common-completed {
    background-color: var(--bg-dark);
    color: var(--text-color);
    border: none;
    padding: 10px 15px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    margin-left: auto;
    font-size: 14px;
}

#clear-completed:hover, #clear-common-completed:hover {
    background-color: var(--accent-color);
    color: white;
    transform: translateY(-2px);
}

#clear-completed:active, #clear-common-completed:active {
    transform: translateY(0);
}

.task-list {
    list-style: none;
    max-height: 380px;
    overflow-y: auto;
    padding-right: 5px;
    margin-top: 10px;
    width: 100%;
}

.task-list::-webkit-scrollbar {
    width: 8px;
}

.task-list::-webkit-scrollbar-track {
    background: var(--bg-dark);
    border-radius: 10px;
}

.task-list::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 10px;
}

.task-list::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

.task-item {
    display: flex;
    align-items: flex-start;
    padding: 15px;
    border-radius: var(--border-radius-md);
    margin-bottom: 12px;
    background-color: var(--bg-dark);
    transition: var(--transition);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    width: 100%;
    box-sizing: border-box;
}

.task-item:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.task-checkbox {
    margin-right: 15px;
    min-width: 22px;
    height: 22px;
    cursor: pointer;
    accent-color: var(--primary-color);
    flex-shrink: 0;
    margin-top: 3px;
}

.task-content {
    flex: 1;
    overflow: hidden;
    min-width: 0;
}

.task-text {
    font-size: 16px;
    transition: var(--transition);
    overflow-wrap: break-word;
    word-wrap: break-word;
    word-break: break-word;
    hyphens: auto;
    white-space: normal;
    line-height: 1.4;
}

.task-item.completed .task-text {
    text-decoration: line-through;
    color: var(--completed-color);
}

.delete-task {
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    font-size: 18px;
    transition: var(--transition);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: 10px;
    flex-shrink: 0;
}

.delete-task:hover {
    color: var(--accent-color);
    background-color: rgba(229, 14, 14, 0.1);
}

.delete-task:active {
    transform: scale(0.9);
}

.empty-message {
    text-align: center;
    padding: 30px;
    color: var(--text-light);
    font-style: italic;
    background-color: var(--bg-dark);
    border-radius: var(--border-radius-md);
    margin-top: 10px;
    width: 100%;
    box-sizing: border-box;
    font-size: 14px;
}

/* Common Tasks Section Styles */
.common-tasks-section {
    margin-bottom: var(--section-gap);
    width: 100%;
}

.section-divider {
    display: flex;
    align-items: center;
    margin: 30px 0;
    color: var(--text-light);
    width: 100%;
}

.section-divider::before,
.section-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background-color: var(--border-color);
}

.section-divider span {
    padding: 0 20px;
    font-weight: 600;
    font-size: 18px;
    color: var(--primary-color);
    white-space: nowrap;
}

.common-tasks-container {
    border-left: 4px solid var(--primary-light);
    background-color: var(--bg-light);
    border-radius: var(--border-radius-lg);
    padding: 25px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    width: 100%;
    box-sizing: border-box;
}

.common-tasks-header {
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    width: 100%;
}

.common-tasks-header h2 {
    font-size: 22px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.common-tasks-subtitle {
    font-size: 14px;
    color: var(--text-light);
    font-style: italic;
}

/* Loading Indicator */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    visibility: hidden;
    opacity: 0;
    transition: var(--transition);
}

.loading-overlay.active {
    visibility: visible;
    opacity: 1;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive Styles */
@media (max-width: 1024px) {
    :root {
        --section-gap: 25px;
        --container-padding: 20px;
    }
    
    .calendar-container, .tasks-container, .common-tasks-container {
        padding: 20px;
    }
    
    main {
        grid-template-columns: minmax(280px, 1fr) minmax(320px, 1.5fr);
    }
}

@media (max-width: 900px) {
    main {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .calendar-container {
        order: 1;
        min-height: 350px;
    }
    
    .tasks-container {
        order: 2;
    }
    
    .notification-toast {
        left: 20px;
        right: 20px;
        max-width: calc(100% - 40px);
    }
    
    .auth-form {
        padding: 25px;
    }
    
    .header-right {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .user-info-wrapper {
        width: 100%;
    }
    
    .user-info {
        width: 100%;
        box-sizing: border-box;
    }
    
    .header-actions {
        width: 100%;
        justify-content: space-between;
    }
}

@media (max-width: 768px) {
    :root {
        --section-gap: 20px;
        --container-padding: 16px;
        --mobile-container-padding: 16px;
    }
    
    .container {
        padding-left: var(--mobile-container-padding);
        padding-right: var(--mobile-container-padding);
    }
    
    header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .header-right {
        width: 100%;
    }
    
    .task-filters {
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .filter-btn, .common-filter-btn {
        flex: 1;
        min-width: 70px;
        font-size: 14px;
        padding: 8px 5px;
    }
    
    #clear-completed, #clear-common-completed {
        margin-left: 0;
        margin-top: 10px;
        width: 100%;
        order: 4;
    }
    
    .calendar-container, .tasks-container, .common-tasks-container {
        padding: 20px 15px;
        border-radius: var(--border-radius-md);
    }
    
    #month-year {
        font-size: 20px;
    }
    
    .day {
        font-size: 14px;
    }
    
    .task-input input {
        padding: 12px;
    }
    
    #selected-date {
        font-size: 18px;
    }
    
    .common-tasks-header h2 {
        font-size: 20px;
    }
    
    .task-list {
        max-height: 350px;
    }
    
    .auth-logo, .app-logo {
        width: 28px;
        height: 28px;
    }
    
    .auth-header h1 {
        font-size: 22px;
    }
}

@media (max-width: 480px) {
    :root {
        --section-gap: 15px;
        --border-radius-lg: 12px;
        --border-radius-md: 8px;
        --border-radius-sm: 6px;
        --container-padding: 12px;
        --mobile-container-padding: 12px;
    }
    
    .container {
        padding-left: var(--mobile-container-padding);
        padding-right: var(--mobile-container-padding);
    }
    
    body {
        font-size: 15px;
    }
    
    header h1 {
        font-size: 22px;
    }
    
    .header-left {
        gap: 8px;
    }
    
    .weekdays div {
        font-size: 12px;
        padding: 5px 0;
    }
    
    .day {
        font-size: 12px;
    }
    
    .day.has-tasks::after {
        width: 4px;
        height: 4px;
        bottom: 3px;
    }
    
    .task-item {
        padding: 12px 10px;
    }
    
    .task-text {
        font-size: 14px;
    }
    
    .auth-form {
        padding: 20px 15px;
    }
    
    .form-group {
        margin-bottom: 18px;
    }
    
    .form-group input, .auth-button {
        padding: 12px;
        font-size: 15px;
    }
    
    .auth-form h2 {
        font-size: 20px;
        margin-bottom: 20px;
    }
    
    .section-divider span {
        padding: 0 10px;
        font-size: 16px;
    }
    
    .task-checkbox {
        margin-right: 10px;
        min-width: 18px;
        height: 18px;
    }
    
    .delete-task {
        width: 35px;
        height: 35px;
    }
    
    .common-tasks-subtitle {
        font-size: 12px;
    }
    
    .auth-tab {
        padding: 15px 10px;
        font-size: 15px;
    }
    
    .user-info {
        font-size: 13px;
        padding: 8px 12px;
    }
    
    .user-info i {
        font-size: 14px;
    }
}

@media (max-width: 400px) {
    :root {
        --mobile-container-padding: 10px;
    }
    
    .container {
        padding-left: var(--mobile-container-padding);
        padding-right: var(--mobile-container-padding);
    }
    
    .task-filters {
        gap: 5px;
    }
    
    .filter-btn, .common-filter-btn {
        font-size: 12px;
        padding: 8px 4px;
        min-width: 60px;
    }
    
    .task-input {
        flex-direction: column;
    }
    
    .task-input input {
        border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
    }
    
    .task-input button {
        border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
        padding: 10px;
        height: 45px;
    }
    
    .auth-card {
        max-width: 100%;
    }
    
    .password-toggle {
        width: 35px;
        height: 35px;
    }
    
    .logout-btn span {
        display: none;
    }
    
    .theme-toggle {
        width: 36px;
        height: 36px;
        font-size: 18px;
    }
    
    .logout-btn {
        padding: 8px 10px;
    }
    
    .logout-btn i {
        font-size: 18px;
    }
}

/* Touch Device Optimizations */
@media (hover: none) {
    .filter-btn, .common-filter-btn, .auth-button, .task-input button, 
    .logout-btn, #clear-completed, #clear-common-completed {
        transition: background-color 0.3s;
    }
    
    .filter-btn:hover, .common-filter-btn:hover, .day:hover,
    .month-nav:hover, .theme-toggle:hover {
        transform: none;
    }
    
    .calendar-container:hover, .tasks-container:hover, .common-tasks-container:hover {
        transform: none;
        box-shadow: var(--shadow);
    }
    
    .task-item:hover {
        transform: none;
    }
    
    .auth-button:hover, .logout-btn:hover, 
    #clear-completed:hover, #clear-common-completed:hover {
        transform: none;
        box-shadow: none;
    }
}