/* Mobile-First Responsive Design for HabitKit Clone */

/* iOS Performance Optimizations */
@supports (-webkit-touch-callout: none) {
    /* iOS-specific optimizations */
    * {
        -webkit-transform: translateZ(0);
        transform: translateZ(0);
        -webkit-backface-visibility: hidden;
        backface-visibility: hidden;
    }
    
    /* Disable expensive effects on iOS */
    .modal-overlay {
        backdrop-filter: none !important;
        background-color: rgba(0, 0, 0, 0.9) !important;
    }
}

/* Base Styles - Mobile First */
html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    /* iOS scrolling optimization */
    -webkit-overflow-scrolling: touch;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin: 0 0 0.5rem 0;
    font-weight: 600;
    line-height: 1.25;
    color: var(--text-primary);
}

/* Links and Buttons */
a, .btn-link {
    color: var(--primary-color);
    text-decoration: none;
}

a:hover, .btn-link:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* Universal Button System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 8px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    min-height: 44px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--success-hover);
    border-color: var(--success-hover);
    /* Disable expensive transform on iOS */
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(35, 134, 54, 0.3);
}

/* iOS-specific button optimizations */
@supports (-webkit-touch-callout: none) {
    .btn-primary:hover:not(:disabled),
    .btn-danger:hover:not(:disabled) {
        transform: none;
    }
}

.btn-secondary {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--hover-bg);
    border-color: var(--text-muted);
}

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

.btn-danger:hover:not(:disabled) {
    background-color: rgba(248, 81, 73, 0.8);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(248, 81, 73, 0.3);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    min-height: 32px;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
    min-height: 52px;
}

.btn-icon {
    padding: 0.5rem;
    min-width: 44px;
    min-height: 44px;
    width: auto;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
    outline: none;
}

/* Content Layout */
.content {
    padding-top: 1rem;
    padding-left: 1rem;
    padding-right: 1rem;
    padding-bottom: 1rem;
}

/* Form Validation */
.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid #e50000;
}

.validation-message {
    color: #e50000;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Error Boundary */
.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNTYiIGhlaWdodD0iNDkiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIG92ZXJmbG93PSJoaWRkZW4iPjxkZWZzPjxjbGlwUGF0aCBpZD0iY2xpcDAiPjxyZWN0IHg9IjIzNSIgeT0iNTEiIHdpZHRoPSI1NiIgaGVpZ2h0PSI0OSIvPjwvY2xpcFBhdGg+PC9kZWZzPjxnIGNsaXAtcGF0aD0idXJsKCNjbGlwMCkiIHRyYW5zZm9ybT0idHJhbnNsYXRlKC0yMzUgLTUxKSI+PHBhdGggZD0iTTI2My41MDYgNTFDMjY0LjcxNyA1MSAyNjUuODEzIDUxLjQ4MzcgMjY2LjYwNiA1Mi4yNjU4TDI2Ny4wNTIgNTIuNzk4NyAyNjcuNTM5IDUzLjYyODMgMjkwLjE4NSA5Mi4xODMxIDI5MC41NDUgOTIuNzk1IDI5MC42NTYgOTIuOTk2QzI5MC44NzcgOTMuNTEzIDI5MSA5NC4wODE1IDI5MSA5NC42NzgyIDI5MSA5Ny4wNjUxIDI4OS4wMzggOTkgMjg2LjYxNyA5OUwyNDAuMzgzIDk5QzIzNy45NjMgOTkgMjM2IDk3LjA2NTEgMjM2IDk0LjY3ODIgMjM2IDk0LjM3OTkgMjM2LjAzMSA5NC4wODg2IDIzNi4wODkgOTMuODA3MkwyMzYuMzM4IDkzLjAxNjIgMjM2Ljg1OCA5Mi4xMzE0IDI1OS40NzMgNTMuNjI5NCAyNTkuOTYxIDUyLjc5ODUgMjYwLjQwNyA1Mi4yNjU4QzI2MS4yIDUxLjQ4MzcgMjYyLjI5NiA1MSAyNjMuNTA2IDUxWk0yNjMuNTg2IDY2LjAxODNDMjYwLjczNyA2Ni4wMTgzIDI1OS4zMTMgNjcuMTI0NSAyNTkuMzEzIDY5LjMzNyAyNTkuMzEzIDY5LjYxMDIgMjU5LjMzMiA2OS44NjA4IDI1OS4zNzEgNzAuMDg4N0wyNjEuNzk1IDg0LjAxNjEgMjY1LjM4IDg0LjAxNjEgMjY3LjgyMSA2OS43NDc1QzI2Ny44NiA2OS43MzA5IDI2Ny44NzkgNjkuNTg3NyAyNjcuODc5IDY5LjMxNzkgMjY3Ljg3OSA2Ny4xMTgyIDI2Ni40NDggNjYuMDE4MyAyNjMuNTg2IDY2LjAxODNaTTI2My41NzYgODYuMDU0N0MyNjEuMDQ5IDg2LjA1NDcgMjU5Ljc4NiA4Ny4zMDA1IDI1OS43ODYgODkuNzkyMSAyNTkuNzg2IDkyLjI4MzcgMjYxLjA0OSA5My41Mjk1IDI2My41NzYgOTMuNTI5NSAyNjYuMTE2IDkzLjUyOTUgMjY3LjM4NyA5Mi4yODM3IDI2Ny4zODcgODkuNzkyMSAyNjcuMzg3IDg3LjMwMDUgMjY2LjExNiA4Ni4wNTQ3IDI2My41NzYgODYuMDU0N1oiIGZpbGw9IiNGRkU1MDAiIGZpbGwtcnVsZT0iZXZlbm9kZCIvPjwvZz48L3N2Zz4=) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

/* Checkbox Styling */
.darker-border-checkbox.form-check-input {
    border-color: #929292;
}

/* Universal App Container */
.app-container, .page-container, .habitkit-container {
    max-width: 100%;
    margin: 0 auto;
    padding: 0;
    background-color: var(--bg-primary);
    min-height: 100vh;
    width: 100%;
    color: var(--text-primary);
}

/* Universal Header System */
.header, .app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 1rem;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    max-width: 100%;
    z-index: 100;
    box-shadow: 0 1px 3px var(--shadow-color);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 100%;
    width: 100%;
}

.header-left,
.header-right,
.header-center {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-actions {
    display: flex;
    gap: 0.5rem;
}

.app-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

.pro-badge {
    background-color: var(--primary-color);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    text-transform: uppercase;
}

.icon-button {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.25rem;
    padding: 0.5rem;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s ease;
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-button:hover {
    background-color: var(--hover-bg);
}

.add-button {
    background-color: var(--success-color);
    color: white;
}

.add-button:hover {
    background-color: var(--success-hover);
}


/* Loading State */
.loading-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 3rem 1rem;
}

.spinner {
    width: 2rem;
    height: 2rem;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #238636;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.empty-state h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.empty-state p {
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

/* Category Filters - Mobile First */
.category-filters {
    display: flex;
    gap: 0.5rem;
    padding: 1rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.category-filters::-webkit-scrollbar {
    display: none;
}

.category-filter {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    min-width: 60px;
    text-align: center;
}

.category-filter:hover {
    background-color: var(--hover-bg);
}

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

/* Habits List - Mobile First */
.habits-list {
    padding: 0 1rem 1rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
    max-width: 100%;
}

/* Habits Grid - Mobile First */
.habits-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 1rem;
}

/* Habit Card - Mobile First */
.habit-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem;
    box-shadow: 0 1px 3px var(--shadow-color);
    transition: all 0.2s ease;
    max-width: 100%;
    overflow: hidden;
}

.habit-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.1);
}

.habit-header {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.habit-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--habit-color, #3B82F6);
    border-radius: 6px;
    color: white;
}

.habit-info {
    flex: 1;
    min-width: 0;
}

.habit-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 0.25rem 0;
    word-wrap: break-word;
}

.habit-description {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
    word-wrap: break-word;
}

.habit-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.completion-checkbox {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 2px solid var(--border-color);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
}

.completion-checkbox:hover {
    border-color: var(--primary-color);
    background-color: var(--hover-bg);
}

.completion-checkbox.completed {
    background-color: var(--success-color);
    border-color: var(--success-color);
    color: white;
}

.completion-checkbox.completed:hover {
    background-color: var(--success-hover);
    border-color: var(--success-hover);
}


/* Contribution Graph - Mobile First */
.contribution-graph {
    background-color: var(--bg-tertiary);
    border-radius: 6px;
    padding: 1rem;
    margin-top: 1rem;
    overflow: hidden;
}

.graph-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.streak-info, .completion-rate, .streak-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.graph-container {
    overflow-x: auto;
    overflow-y: hidden;
    margin-bottom: 0.75rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: #d0d7de transparent;
}

.graph-container::-webkit-scrollbar {
    height: 6px;
}

.graph-container::-webkit-scrollbar-track {
    background: transparent;
}

.graph-container::-webkit-scrollbar-thumb {
    background-color: #d0d7de;
    border-radius: 3px;
}

.graph-container::-webkit-scrollbar-thumb:hover {
    background-color: #8b949e;
}

.contribution-calendar {
    display: flex;
    gap: 2px;
    min-width: max-content;
    padding: 0.5rem 0;
    width: fit-content;
}

.contribution-week {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex-shrink: 0;
}

.contribution-cell {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    flex-shrink: 0;
}

.contribution-cell:hover {
    border: 1px solid var(--text-muted);
    transform: scale(1.1);
}

/* iOS-specific hover optimizations */
@supports (-webkit-touch-callout: none) {
    .contribution-cell:hover,
    .chart-cell:hover {
        transform: none;
    }
}

/* Graph Legend - Mobile First */
.graph-legend {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.legend-cells {
    display: flex;
    gap: 2px;
}

.legend-cell {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    border: 1px solid var(--border-color);
}

/* Navigation - Mobile First (Hidden) */
.navbar {
    display: none;
}

.navbar-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.navbar-brand a {
    color: var(--primary-color);
    text-decoration: none;
}

.navbar-toggle {
    display: none;
}

.navbar-toggle-label {
    display: flex;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
}

.navbar-toggle-label span {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

.navbar-toggle:checked ~ .navbar-toggle-label span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.navbar-toggle:checked ~ .navbar-toggle-label span:nth-child(2) {
    opacity: 0;
}

.navbar-toggle:checked ~ .navbar-toggle-label span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

.navbar-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-top: none;
    box-shadow: 0 4px 12px var(--shadow-color);
    display: none;
    flex-direction: column;
    padding: 1rem;
    z-index: 1000;
}

.navbar-toggle:checked ~ .navbar-nav {
    display: flex;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.75rem 0;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    border-radius: 6px;
}

.nav-link:last-child {
    border-bottom: none;
}

.nav-link:hover {
    color: var(--text-primary);
    background-color: var(--hover-bg);
    padding-left: 0.5rem;
}

.nav-link.active {
    color: var(--primary-color);
    font-weight: 600;
    background-color: var(--hover-bg);
}

.nav-form {
    margin: 0;
    padding: 0;
}

.nav-button {
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    padding: 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.2s ease;
}

.nav-button:hover {
    color: var(--text-primary);
}

/* Settings Page - Mobile First */
.settings-container {
    padding: 1rem;
    max-width: 100%;
}

.settings-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.settings-card-header {
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem;
}

.settings-card-header h5 {
    color: var(--text-primary);
    font-weight: 600;
    margin: 0;
}

.settings-card-body {
    padding: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.form-control, .form-select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.875rem;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
    outline: none;
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.form-check-input {
    width: 1rem;
    height: 1rem;
    margin: 0;
}

.form-check-label {
    font-size: 0.875rem;
    color: var(--text-primary);
    margin: 0;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    z-index: 1050;
    max-width: calc(100vw - 2rem);
}

.toast {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: 0 4px 12px var(--shadow-light);
    max-width: 100%;
}

.toast-header {
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.toast-body {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
}


/* Tablet Styles */
@media (min-width: 768px) {
    .content {
        padding: 1.5rem;
    }
    
    .habits-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
        padding: 1.5rem;
    }
    
    .header {
        padding: 1.5rem;
    }
    
    .app-title {
        font-size: 1.75rem;
    }
    
    .contribution-cell {
        width: 12px;
        height: 12px;
    }
    
    .navbar {
        padding: 1rem 1.5rem;
    }
    
    .navbar-toggle-label {
        display: none;
    }
    
    .navbar-nav {
        position: static;
        display: flex;
        flex-direction: row;
        gap: 1rem;
        padding: 0;
        box-shadow: none;
        border: none;
        background: none;
    }
    
    .nav-link {
        padding: 0.5rem 1rem;
        border-bottom: none;
        border-radius: 6px;
        transition: background-color 0.2s ease;
    }
    
    .nav-link:hover {
        background-color: var(--hover-bg);
    }
    
    .nav-button {
        padding: 0.5rem 1rem;
        border-radius: 6px;
        transition: background-color 0.2s ease;
    }
    
    .nav-button:hover {
        background-color: var(--hover-bg);
    }
    
    .settings-container {
        padding: 1.5rem;
    }
}

/* Desktop Styles */
@media (min-width: 1024px) {
    .habitkit-container {
        max-width: 1200px;
        margin: 0 auto;
    }
    
    .habits-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
        padding: 2rem;
    }
    
    .header {
        padding: 2rem;
    }
    
    .app-title {
        font-size: 2rem;
    }
    
    .contribution-cell {
        width: 14px;
        height: 14px;
    }
    
    .settings-container {
        padding: 2rem;
    }
}

/* Large Desktop Styles */
@media (min-width: 1440px) {
    .habits-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.d-flex { display: flex; }
.d-block { display: block; }
.d-none { display: none; }

.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }

.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

/* Mobile Specific Styles */
@media (max-width: 575px) {
    .app-title {
        font-size: 1.25rem;
    }
    
    .habit-name {
        font-size: 1rem;
    }
    
    .contribution-cell {
        width: 8px;
        height: 8px;
    }
    
    .graph-legend {
        font-size: 0.625rem;
    }
    
    .contribution-graph {
        padding: 0.75rem;
        margin-top: 0.75rem;
    }
    
    .graph-container {
        margin-bottom: 0.5rem;
    }
    
    .contribution-calendar {
        gap: 1px;
        padding: 0.25rem 0;
    }
    
    .contribution-week {
        gap: 1px;
    }
}

/* Small Mobile Styles */
@media (max-width: 375px) {
    .contribution-cell {
        width: 6px;
        height: 6px;
    }
    
    .contribution-graph {
        padding: 0.5rem;
    }
    
    .habit-card {
        padding: 0.75rem;
    }
    
    .habits-grid {
        padding: 0.75rem;
        gap: 0.75rem;
    }
}

/* Touch-friendly improvements for mobile */
@media (hover: none) and (pointer: coarse) {
    .btn, .contribution-cell, .form-check-input {
        min-height: 44px;
        min-width: 44px;
    }
    
    .contribution-cell {
        width: 16px;
        height: 16px;
    }
    
    .btn-edit, .btn-delete {
        width: 44px;
        height: 44px;
    }
    
    /* Override for contribution chart cells to prevent 44px sizing */
    .contribution-chart .chart-cell {
        min-height: unset !important;
        min-width: unset !important;
        width: 20px !important;
        height: 20px !important;
    }
}

/* Settings Page Styles */
.settings-sections {
    padding: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

.settings-section {
    margin-bottom: 2rem;
}

.section-title {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
    padding: 0 1rem;
}

.settings-list {
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.settings-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background-color 0.2s;
}

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

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

.settings-item-left {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.settings-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
}

.settings-icon.pink { background: rgba(236, 72, 153, 0.2); color: #ec4899; }
.settings-icon.blue { background: rgba(59, 130, 246, 0.2); color: #3b82f6; }
.settings-icon.orange { background: rgba(249, 115, 22, 0.2); color: #f97316; }
.settings-icon.green { background: rgba(34, 197, 94, 0.2); color: #22c55e; }
.settings-icon.red { background: rgba(239, 68, 68, 0.2); color: #ef4444; }
.settings-icon.gray { background: rgba(107, 114, 128, 0.2); color: #6b7280; }

.settings-label {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 1rem;
}

.settings-arrow {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.settings-toggle {
    display: flex;
    align-items: center;
}

.toggle {
    width: 3rem;
    height: 1.5rem;
    background: var(--text-muted);
    border-radius: 0.75rem;
    position: relative;
    cursor: pointer;
    transition: background-color 0.2s;
}

.toggle.active {
    background: var(--primary-color);
}

.toggle-handle {
    width: 1.25rem;
    height: 1.25rem;
    background: white;
    border-radius: 50%;
    position: absolute;
    top: 0.125rem;
    left: 0.125rem;
    transition: transform 0.2s;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle.active .toggle-handle {
    transform: translateX(1.5rem);
}

/* Pro Banner */
.pro-banner {
    margin: 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    padding: 1.5rem;
    cursor: pointer;
    transition: transform 0.2s;
}

.pro-banner:hover {
    transform: translateY(-2px);
}

.pro-banner-content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.pro-icon {
    flex-shrink: 0;
}

.pro-icon-grid {
    width: 2.5rem;
    height: 2.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px;
}

.grid-square {
    border-radius: 4px;
}

.grid-square.green { background: #22c55e; }
.grid-square.purple { background: #8b5cf6; }
.grid-square.orange { background: #f97316; }
.grid-square.red { background: #ef4444; }

.pro-text {
    flex: 1;
}

.pro-text h3 {
    color: white;
    margin: 0 0 0.25rem 0;
    font-size: 1.125rem;
    font-weight: 600;
}

.pro-text p {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    font-size: 0.875rem;
    line-height: 1.4;
}

.pro-arrow {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.125rem;
}

/* Global View Controls */
.global-view-controls {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    border-top: 1px solid var(--border-color);
    position: sticky;
    bottom: 0;
    z-index: 100;
    box-shadow: 0 -4px 12px var(--shadow-color);
}

[data-theme="light"] .global-view-controls {
    background: var(--bg-secondary);
    box-shadow: 0 -2px 6px var(--shadow-color);
}

.view-button {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    color: var(--text-muted);
    padding: 0.75rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 52px;
    min-height: 52px;
    font-size: 1.125rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.view-button:hover {
    background: #30363d;
    border-color: #8b5cf6;
    color: #c9d1d9;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(139, 92, 246, 0.3);
}

.view-button.active {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    border-color: #8b5cf6;
    color: white;
    box-shadow: 0 4px 16px rgba(139, 92, 246, 0.4);
}

.view-button i {
    font-size: 0.875rem;
}

/* Habit Card Updates */
.habit-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.habit-header {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.habit-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.habit-info {
    flex: 1;
    min-width: 0;
}

.habit-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 0.25rem 0;
}

.habit-description {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.4;
}

.habit-actions {
    flex-shrink: 0;
}

.completion-checkbox {
    width: 2rem;
    height: 2rem;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.completion-checkbox:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.completion-checkbox.completed {
    background: var(--success-color);
    border-color: var(--success-color);
    color: white;
}

.completion-checkbox i {
    font-size: 0.875rem;
}

.habit-progress {
    margin-top: 0.75rem;
}

.progress-summary {
    margin-bottom: 0.75rem;
}

.streak-count {
    font-size: 0.875rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* Contribution Chart Updates */
.contribution-chart {
    margin-top: 0.75rem;
}

.chart-container {
    overflow-x: auto;
    padding: 0.5rem 0;
}

.chart-grid {
    display: flex;
    gap: 2px;
    min-width: max-content;
}

.chart-week {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.chart-cell {
    width: 20px;
    height: 20px;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.2s;
}

.chart-cell:hover {
    transform: scale(1.1);
    box-shadow: 0 0 0 1px var(--text-primary);
}

/* Icon Button Updates */
.icon-button {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 0.5rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    min-height: 40px;
}

.icon-button:hover:not(:disabled) {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.icon-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.add-button {
    background: var(--success-color);
    color: white;
}

.add-button:hover:not(:disabled) {
    background: var(--success-hover);
}

/* Category Filter Updates */
.category-filters {
    display: flex;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
}

.category-filter {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    font-size: 0.875rem;
    font-weight: 500;
}

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

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

/* Logout Button Styling */
.logout-item {
    border-top: 1px solid var(--border-color);
    margin-top: 0.5rem;
    padding-top: 0.75rem;
    cursor: pointer;
    background: none;
    border-left: none;
    border-right: none;
    border-bottom: none;
    width: 100%;
    text-align: left;
    padding: 0.75rem 1rem;
    margin: 0.5rem 0 0 0;
    border-top: 1px solid var(--border-color);
}

.logout-item .settings-label {
    color: #f85149;
    font-weight: 600;
}

.logout-item:hover {
    background: rgba(248, 81, 73, 0.1);
}

.logout-item:hover .settings-label {
    color: #f85149;
}

.logout-item .settings-icon {
    background: rgba(248, 81, 73, 0.2);
    color: #f85149;
}

.logout-item:focus {
    outline: 2px solid #f85149;
    outline-offset: 2px;
}

.logout-item:active {
    background: rgba(248, 81, 73, 0.2);
}

/* Login Page Styles */
.login-container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.login-card, .external-login-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 12px var(--shadow-color);
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.external-login-title {
    color: var(--text-primary);
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.form-group {
    margin-bottom: 1.5rem;
}

.checkbox-group {
    margin-bottom: 1rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.875rem;
}

.validation-summary {
    background-color: rgba(248, 81, 73, 0.1);
    border: 1px solid var(--error-color);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1.5rem;
    color: var(--error-color);
}

.validation-message {
    color: var(--error-color);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.login-links {
    margin-top: 1.5rem;
    text-align: center;
}

.login-links p {
    margin-bottom: 0.75rem;
}

.link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.875rem;
}

.link:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* Tablet Styles for Login */
@media (max-width: 768px) {
    .login-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin: 1rem auto;
    }
    
    .login-card, .external-login-card {
        padding: 1.5rem;
    }
}