/* Custom Color Palette */
:root {
    --tropical-indigo: #9381ff;
    --periwinkle: #b8b8ff;
    --ghost-white: #f8f7ff;
    --antique-white: #ffeedd;
    --apricot: #ffd8be;
    
    /* Additional colors for better UI */
    --white: #ffffff;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --text-dark: #1a202c;
    --success: #48bb78;
    --warning: #ed8936;
    --error: #f56565;
    --shadow: rgba(147, 129, 255, 0.1);
    --shadow-hover: rgba(147, 129, 255, 0.2);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family), 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--ghost-white, #f8f7ff) 0%, var(--antique-white, #ffeedd) 100%);
    color: var(--text-primary, #2d3748);
    line-height: 1.6;
    min-height: 100vh;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
    min-height: 100vh;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-xl) 0;
}

.header-content {
    animation: fadeInUp 0.8s ease-out;
}

.app-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--tropical-indigo) !important;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.app-title i {
    font-size: var(--font-size-2xl);
    color: var(--tropical-indigo) !important;
}

.app-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary) !important;
    font-weight: 400;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    opacity: 1;
}

/* Main Content */
.main-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

/* Add Habit Section */
.add-habit-section {
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.add-habit-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: 0 10px 25px var(--shadow);
    border: 1px solid rgba(147, 129, 255, 0.1);
    transition: all var(--transition-normal);
}

.add-habit-card:hover {
    box-shadow: 0 20px 40px var(--shadow-hover);
    transform: translateY(-2px);
}

.add-habit-card h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary) !important;
    margin-bottom: var(--spacing-lg);
    text-align: center;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.habit-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group input,
.form-group select {
    padding: var(--spacing-md);
    border: 2px solid var(--periwinkle);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    background: var(--ghost-white);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

/* Custom Select with Icon */
.custom-select {
    position: relative;
    display: flex;
    align-items: center;
}

.custom-select select {
    flex: 1;
    padding-left: 50px;
}

.select-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    pointer-events: none;
    z-index: 2;
}

.select-icon img {
    width: 100%;
    height: 100%;
    transition: all var(--transition-fast);
}

/* Icon colors for select */
.select-icon img[src*="health"] {
    filter: brightness(0) saturate(100%) invert(54%) sepia(98%) saturate(4328%) hue-rotate(336deg) brightness(103%) contrast(101%);
}

.select-icon img[src*="productivity"] {
    filter: brightness(0) saturate(100%) invert(46%) sepia(83%) saturate(2347%) hue-rotate(221deg) brightness(100%) contrast(91%);
}

.select-icon img[src*="learning"] {
    filter: brightness(0) saturate(100%) invert(78%) sepia(59%) saturate(2613%) hue-rotate(86deg) brightness(93%) contrast(88%);
}

.select-icon img[src*="mindfulness"] {
    filter: brightness(0) saturate(100%) invert(36%) sepia(71%) saturate(1729%) hue-rotate(261deg) brightness(95%) contrast(94%);
}

.select-icon img[src*="social"] {
    filter: brightness(0) saturate(100%) invert(56%) sepia(88%) saturate(2340%) hue-rotate(90deg) brightness(97%) contrast(86%);
}

.select-icon img[src*="creative"] {
    filter: brightness(0) saturate(100%) invert(74%) sepia(58%) saturate(4328%) hue-rotate(309deg) brightness(103%) contrast(101%);
}

.select-icon img[src*="other"] {
    filter: brightness(0) saturate(100%) invert(85%) sepia(97%) saturate(1328%) hue-rotate(356deg) brightness(103%) contrast(101%);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--tropical-indigo);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(147, 129, 255, 0.1);
}

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

/* Buttons */
.btn-primary,
.btn-secondary {
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-fast);
    text-decoration: none;
    font-family: var(--font-family);
}

.btn-primary {
    background: linear-gradient(135deg, var(--tropical-indigo), var(--periwinkle));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(147, 129, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(147, 129, 255, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--ghost-white);
    color: var(--text-primary);
    border: 2px solid var(--periwinkle);
}

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

/* Stats Section */
.stats-section {
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    box-shadow: 0 4px 15px var(--shadow);
    border: 1px solid rgba(147, 129, 255, 0.1);
    transition: all var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px var(--shadow-hover);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--tropical-indigo), var(--periwinkle));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: var(--font-size-xl);
}

.stat-content {
    flex: 1;
}

.stat-number {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--tropical-indigo);
    line-height: 1.2;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

/* Habits Section */
.habits-section {
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.section-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary) !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.view-toggle {
    display: flex;
    background: var(--ghost-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs);
    border: 2px solid var(--periwinkle);
}

.view-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.view-btn.active {
    background: var(--tropical-indigo);
    color: var(--white);
    box-shadow: 0 2px 8px rgba(147, 129, 255, 0.3);
}

.habits-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* Category Icons SVG */
.category-icon {
    width: 20px;
    height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--spacing-sm);
    vertical-align: middle;
}

.category-icon svg,
.category-icon img {
    width: 100%;
    height: 100%;
    transition: all var(--transition-fast);
}

/* Category specific colors */
.category-icon.icon-health svg,
.category-icon.icon-health img {
    filter: brightness(0) saturate(100%) invert(54%) sepia(98%) saturate(4328%) hue-rotate(336deg) brightness(103%) contrast(101%);
}

.category-icon.icon-productivity svg,
.category-icon.icon-productivity img {
    filter: brightness(0) saturate(100%) invert(46%) sepia(83%) saturate(2347%) hue-rotate(221deg) brightness(100%) contrast(91%);
}

.category-icon.icon-learning svg,
.category-icon.icon-learning img {
    filter: brightness(0) saturate(100%) invert(78%) sepia(59%) saturate(2613%) hue-rotate(86deg) brightness(93%) contrast(88%);
}

.category-icon.icon-mindfulness svg,
.category-icon.icon-mindfulness img {
    filter: brightness(0) saturate(100%) invert(36%) sepia(71%) saturate(1729%) hue-rotate(261deg) brightness(95%) contrast(94%);
}

.category-icon.icon-social svg,
.category-icon.icon-social img {
    filter: brightness(0) saturate(100%) invert(56%) sepia(88%) saturate(2340%) hue-rotate(90deg) brightness(97%) contrast(86%);
}

.category-icon.icon-creative svg,
.category-icon.icon-creative img {
    filter: brightness(0) saturate(100%) invert(74%) sepia(58%) saturate(4328%) hue-rotate(309deg) brightness(103%) contrast(101%);
}

.category-icon.icon-other svg,
.category-icon.icon-other img {
    filter: brightness(0) saturate(100%) invert(85%) sepia(97%) saturate(1328%) hue-rotate(356deg) brightness(103%) contrast(101%);
}

/* Hover effects for icons */
.habit-category:hover .category-icon svg,
.habit-category:hover .category-icon img {
    transform: scale(1.1);
}

/* Select dropdown icons */
.form-group select option[value="health"]::before,
.form-group select option[value="productivity"]::before,
.form-group select option[value="learning"]::before,
.form-group select option[value="mindfulness"]::before,
.form-group select option[value="social"]::before,
.form-group select option[value="creative"]::before,
.form-group select option[value="other"]::before {
    content: "";
    display: inline-block;
    width: 16px;
    height: 16px;
    margin-right: 8px;
    vertical-align: middle;
}

/* Habit Card */
.habit-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: 0 4px 15px var(--shadow);
    border: 1px solid rgba(147, 129, 255, 0.1);
    transition: all var(--transition-normal);
    animation: slideInRight 0.5s ease-out;
}

.habit-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px var(--shadow-hover);
}

.habit-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
}

.habit-info {
    flex: 1;
}

.habit-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.habit-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.habit-category,
.habit-frequency {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.habit-category {
    background: var(--apricot);
    color: var(--text-primary);
}

.habit-frequency {
    background: var(--periwinkle);
    color: var(--white);
}

.habit-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.action-btn {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

.edit-btn {
    background: var(--ghost-white);
    color: var(--tropical-indigo);
    border: 1px solid var(--periwinkle);
}

.edit-btn:hover {
    background: var(--periwinkle);
    color: var(--white);
}

.delete-btn {
    background: rgba(245, 101, 101, 0.1);
    color: var(--error);
    border: 1px solid rgba(245, 101, 101, 0.2);
}

.delete-btn:hover {
    background: var(--error);
    color: var(--white);
}

/* Progress Section */
.habit-progress {
    margin-bottom: var(--spacing-lg);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.streak-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.streak-number {
    font-weight: 600;
    color: var(--tropical-indigo);
}

.streak-icon {
    color: var(--warning);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--ghost-white);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--tropical-indigo), var(--periwinkle));
    border-radius: var(--radius-sm);
    transition: width var(--transition-slow);
}

/* Weekly View */
.weekly-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.day-cell {
    aspect-ratio: 1;
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid var(--ghost-white);
}

.day-cell.completed {
    background: var(--success);
    color: var(--white);
    border-color: var(--success);
}

.day-cell.today {
    border-color: var(--tropical-indigo);
    background: var(--periwinkle);
    color: var(--white);
}

.day-cell:hover {
    transform: scale(1.05);
}

.day-label {
    font-size: var(--font-size-xs);
    margin-bottom: var(--spacing-xs);
}

/* Daily Completion */
.daily-completion {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.completion-btn {
    width: 50px;
    height: 50px;
    border: 3px solid var(--periwinkle);
    border-radius: 50%;
    background: var(--white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    color: var(--periwinkle);
    transition: all var(--transition-normal);
}

.completion-btn.completed {
    background: var(--success);
    border-color: var(--success);
    color: var(--white);
    transform: scale(1.1);
}

.completion-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(147, 129, 255, 0.3);
}

.completion-text {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

.completion-text.completed {
    color: var(--success);
    font-weight: 500;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-muted);
}

.empty-icon {
    font-size: 4rem;
    color: var(--periwinkle);
    margin-bottom: var(--spacing-lg);
}

.empty-state h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-secondary) !important;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.empty-state p {
    font-size: var(--font-size-base);
    max-width: 400px;
    margin: 0 auto;
    color: var(--text-muted) !important;
    text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn var(--transition-normal);
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
    animation: slideInUp var(--transition-normal);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.modal-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.close-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--ghost-white);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.close-btn:hover {
    background: var(--error);
    color: var(--white);
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    margin-top: var(--spacing-lg);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-container {
        padding: var(--spacing-sm);
    }
    
    .app-title {
        font-size: var(--font-size-2xl);
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .app-subtitle {
        font-size: var(--font-size-base);
    }
    
    .add-habit-card,
    .habit-card {
        padding: var(--spacing-lg);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .stat-card {
        padding: var(--spacing-lg);
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .section-header h2 {
        font-size: var(--font-size-xl);
    }
    
    .habit-header {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start;
    }
    
    .habit-actions {
        align-self: flex-end;
    }
    
    .habit-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .daily-completion {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .weekly-grid {
        grid-template-columns: repeat(7, 1fr);
        gap: var(--spacing-xs);
    }
    
    .day-cell {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs);
    }
    
    .modal-content {
        margin: var(--spacing-md);
        width: calc(100% - 2rem);
    }
    
    .form-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .app-title {
        font-size: var(--font-size-xl);
    }
    
    .stats-grid {
        gap: var(--spacing-sm);
    }
    
    .stat-card {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .stat-icon {
        width: 50px;
        height: 50px;
    }
    
    .weekly-grid {
        gap: 2px;
    }
    
    .day-cell {
        font-size: 10px;
        padding: 2px;
    }
    
    .habit-title {
        font-size: var(--font-size-base);
    }
}

/* Dark mode support (for future enhancement) */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #f7fafc;
        --text-secondary: #e2e8f0;
        --text-muted: #a0aec0;
    }
}

/* Text visibility fix */
h1, h2, h3, h4, h5, h6, p, span, div, label {
    opacity: 1 !important;
    visibility: visible !important;
}

.app-title, .app-subtitle, .section-header h2, .add-habit-card h2, .empty-state h3, .empty-state p {
    opacity: 1 !important;
    visibility: visible !important;
    display: block !important;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}