/* CSS Custom Properties for Theming */
:root {
    /* Light Theme Colors */
    --bg-primary: #FFF5F7;
    --bg-secondary: #FFE5EC;
    --bg-tertiary: #FFC2D1;
    --bg-accent: #FFB3C1;
    --text-primary: #5D4E60;
    --text-secondary: #8B7B8C;
    --text-light: rgba(255, 255, 255, 0.9);
    --border-color: rgba(255, 229, 236, 0.5);
    --shadow-light: rgba(255, 194, 209, 0.2);
    --shadow-medium: rgba(255, 194, 209, 0.3);
    --shadow-heavy: rgba(255, 179, 193, 0.3);
    --card-bg: white;
    --input-bg: white;
    --success-bg: linear-gradient(135deg, #D4EDDA 0%, #C3E6CB 100%);
    --success-text: #155724;
    --error-bg: linear-gradient(135deg, #F8D7DA 0%, #F5C6CB 100%);
    --error-text: #721C24;
    --warning-bg: #FFA500;
    --danger-bg: linear-gradient(135deg, #FF6B6B 0%, #FF5252 100%);
    --scrollbar-track: #FFE5EC;
    --scrollbar-thumb: #FFC2D1;
    --scrollbar-thumb-hover: #FFB3C1;
}

/* Dark Theme Colors */
[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #404040;
    --bg-accent: #FF6B9D;
    --text-primary: #E0E0E0;
    --text-secondary: #B0B0B0;
    --text-light: rgba(224, 224, 224, 0.9);
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-light: rgba(0, 0, 0, 0.3);
    --shadow-medium: rgba(0, 0, 0, 0.5);
    --shadow-heavy: rgba(0, 0, 0, 0.7);
    --card-bg: #2d2d2d;
    --input-bg: #404040;
    --success-bg: linear-gradient(135deg, #1e3a2e 0%, #2d5a3d 100%);
    --success-text: #4ade80;
    --error-bg: linear-gradient(135deg, #3d1a2e 0%, #5a2d3d 100%);
    --error-text: #ff6b6b;
    --warning-bg: #FFA500;
    --danger-bg: linear-gradient(135deg, #dc2626 0%, #991b1b 100%);
    --scrollbar-track: #2d2d2d;
    --scrollbar-thumb: #404040;
    --scrollbar-thumb-hover: #FF6B9D;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.header {
    background: linear-gradient(135deg, #FFC2D1 0%, #FFB3C1 100%);
    padding: 2rem 0;
    box-shadow: 0 4px 20px rgba(255, 179, 193, 0.3);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
    border-radius: 50%;
}

.header-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

/* Header Controls */
.header-controls {
    position: absolute;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    display: flex;
    gap: 1rem;
    z-index: 2;
}

.settings-toggle,
.theme-toggle {
    width: 45px;
    height: 45px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    color: #FFB3C1;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 179, 193, 0.3);
}

.settings-toggle:hover,
.theme-toggle:hover {
    background: white;
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(255, 179, 193, 0.4);
}

.settings-toggle:active,
.theme-toggle:active {
    transform: scale(0.95);
}

.logo {
    font-size: 2.5rem;
    color: white;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.logo i {
    margin-right: 0.5rem;
    color: #FFE5EC;
}

.tagline {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    font-weight: 300;
}

/* Main Content */
.main {
    padding: 2rem 0;
}

/* Card Styles */
.card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 1.5rem;
    box-shadow: 0 8px 32px var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    margin-bottom: 2rem;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px var(--shadow-medium);
}

.card h2 {
    color: var(--bg-accent);
    margin-bottom: 1rem;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Summary Cards */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.summary-cards .card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: linear-gradient(135deg, #FFE5EC 0%, #FFC2D1 100%);
    color: #FFB3C1;
}

.card-content h3 {
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.amount {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--bg-accent);
}

/* Form Styles */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

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

.form-group label {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.form-group input,
.form-group select {
    padding: 0.75rem;
    border: 2px solid var(--bg-secondary);
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--input-bg);
    color: var(--text-primary);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--bg-tertiary);
    box-shadow: 0 0 0 3px var(--shadow-light);
}

/* Button Styles */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, #FFC2D1 0%, #FFB3C1 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 179, 193, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 179, 193, 0.4);
}

.btn-secondary {
    background: #F0F0F0;
    color: #5D4E60;
}

.btn-secondary:hover {
    background: #E0E0E0;
}

.btn-danger {
    background: linear-gradient(135deg, #FF6B6B 0%, #FF5252 100%);
    color: white;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 82, 82, 0.4);
}

/* Charts Section */
.charts-section {
    margin-bottom: 2rem;
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.chart-container {
    position: relative;
    height: 300px;
    margin-top: 1rem;
}

/* Transactions List */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.filters {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.filters select,
.filters input[type="month"] {
    padding: 0.5rem;
    border: 2px solid #FFE5EC;
    border-radius: 8px;
    background: white;
    color: #5D4E60;
}

.transactions-list {
    max-height: 400px;
    overflow-y: auto;
}

.transaction-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid #FFE5EC;
    transition: background 0.3s ease;
}

.transaction-item:hover {
    background: #FFF5F7;
}

.transaction-info {
    flex: 1;
}

.transaction-amount {
    font-weight: 700;
    color: #FFB3C1;
    font-size: 1.1rem;
}

.transaction-description {
    color: #5D4E60;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.transaction-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: #8B7B8C;
}

.transaction-category {
    background: #FFE5EC;
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    font-size: 0.8rem;
    color: #FFB3C1;
    font-weight: 600;
}

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

.btn-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.btn-edit {
    background: #FFE5EC;
    color: #FFB3C1;
}

.btn-edit:hover {
    background: #FFC2D1;
    color: white;
}

.btn-delete {
    background: #FFE5EC;
    color: #FFB3C1;
}

.btn-delete:hover {
    background: #FF6B6B;
    color: white;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--card-bg);
    margin: 10% auto;
    padding: 2rem;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 20px 60px var(--shadow-heavy);
    position: relative;
    animation: slideIn 0.3s ease;
}

.close {
    color: var(--text-secondary);
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

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

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: #8B7B8C;
}

.empty-state i {
    font-size: 3rem;
    color: #FFE5EC;
    margin-bottom: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 10px;
        max-width: 100%;
        overflow-x: hidden;
    }
    
    .logo {
        font-size: 2rem;
    }
    
    .summary-cards {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .section-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .filters {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .filters select,
    .filters input[type="month"] {
        width: 100%;
    }
    
    .transaction-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .transaction-actions {
        align-self: flex-end;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .header-controls {
        position: static;
        transform: none;
        justify-content: center;
        margin-top: 1rem;
    }
    
    .header-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .data-actions {
        justify-content: center;
        margin-top: 1rem;
        flex-wrap: wrap;
    }
    
    .data-actions .btn {
        flex: 1;
        min-width: 120px;
    }
}

/* Extra Small Screens */
@media (max-width: 480px) {
    .container {
        padding: 0 8px;
    }
    
    .header {
        padding: 1rem 0;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .tagline {
        font-size: 0.9rem;
    }
    
    .card {
        padding: 1rem;
        margin-bottom: 1rem;
    }
    
    .card h2 {
        font-size: 1.1rem;
    }
    
    .summary-cards .card {
        padding: 1rem;
    }
    
    .card-icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .amount {
        font-size: 1.2rem;
    }
    
    .btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .form-group input,
    .form-group select {
        padding: 0.6rem;
        font-size: 0.9rem;
    }
    
    .chart-container {
        height: 250px;
    }
    
    .transaction-item {
        padding: 0.75rem;
    }
    
    .transaction-description {
        font-size: 0.9rem;
    }
    
    .transaction-meta {
        font-size: 0.75rem;
    }
    
    .modal-content {
        width: 95%;
        margin: 5% auto;
        padding: 1.5rem;
    }
    
    .budget-info {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .data-actions {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .data-actions .btn {
        min-width: auto;
    }
    
    .import-preview pre {
        font-size: 0.7rem;
        word-break: break-all;
    }
    
    #settingsModal .modal-content {
        max-width: 95%;
    }
    
    .preview-amount {
        font-size: 1.3rem;
    }
    
    .data-management-section {
        padding: 1rem;
    }
    
    .data-management-section h3 {
        font-size: 1rem;
    }
    
    .data-management-group h4 {
        font-size: 0.9rem;
    }
    
    .button-group {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .button-group .btn {
        min-width: auto;
        flex: none;
    }
}

/* Prevent horizontal overflow */
body {
    overflow-x: hidden;
}

.container {
    overflow-x: hidden;
}

.card {
    overflow-x: hidden;
}

.transactions-list {
    overflow-x: hidden;
}

.chart-container {
    overflow-x: hidden;
}

/* Scrollbar Styles */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--scrollbar-thumb-hover);
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #FFE5EC;
    border-radius: 50%;
    border-top-color: #FFB3C1;
    animation: spin 1s ease-in-out infinite;
}

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

/* Success Message */
.success-message {
    background: var(--success-bg);
    color: var(--success-text);
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: slideIn 0.3s ease;
}

/* Error Message */
.error-message {
    background: var(--error-bg);
    color: var(--error-text);
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: slideIn 0.3s ease;
}

/* Budget Section */
.budget-section {
    margin-bottom: 2rem;
}

.budget-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.budget-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--bg-primary);
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.budget-label {
    font-weight: 600;
    color: var(--text-primary);
}

.budget-value {
    font-weight: 700;
    color: var(--bg-accent);
    font-size: 1.1rem;
}

.budget-progress {
    grid-column: 1 / -1;
    margin-top: 1rem;
}

.progress-bar {
    width: 100%;
    height: 20px;
    background: var(--bg-secondary);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 0.5rem;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-accent) 100%);
    border-radius: 10px;
    transition: width 0.5s ease;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-text {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    display: block;
}

.budget-info-preview {
    background: var(--bg-primary);
    padding: 1rem;
    border-radius: 10px;
    margin: 1rem 0;
    border: 1px solid var(--border-color);
}

.budget-info-preview p {
    margin: 0.5rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.budget-info-preview strong {
    color: var(--text-primary);
}

.budget-info-preview span {
    font-weight: 600;
    color: var(--bg-accent);
}

/* Budget warning states */
.budget-item.warning .budget-value {
    color: #FFA500;
}

.budget-item.danger .budget-value {
    color: #FF6B6B;
}

.progress-fill.warning {
    background: linear-gradient(135deg, #FFA500 0%, #FF8C00 100%);
}

.progress-fill.danger {
    background: linear-gradient(135deg, #FF6B6B 0%, #FF5252 100%);
}

/* Header Actions Layout */
.header-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    width: 100%;
}

.data-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

/* Import Modal Styles */
.import-info {
    margin-bottom: 1.5rem;
}

.import-info p {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.import-preview {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1rem;
    margin: 1rem 0;
}

.import-preview h4 {
    color: var(--bg-accent);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.import-preview pre {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.75rem;
    font-size: 0.8rem;
    color: var(--text-primary);
    overflow-x: auto;
    margin: 0;
}

.import-options {
    margin: 1rem 0;
}

.csv-import-options {
    margin: 1rem 0;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.checkbox-label input[type="checkbox"] {
    margin-top: 0.25rem;
}

/* File Input Styling */
input[type="file"] {
    padding: 0.75rem;
    border: 2px solid var(--bg-secondary);
    border-radius: 12px;
    font-size: 1rem;
    background: var(--input-bg);
    color: var(--text-primary);
    transition: all 0.3s ease;
    width: 100%;
}

input[type="file"]:focus {
    outline: none;
    border-color: var(--bg-tertiary);
    box-shadow: 0 0 0 3px var(--shadow-light);
}

/* Currency Settings Modal */
.currency-preview {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1rem;
    margin: 1rem 0;
    text-align: center;
}

.currency-preview h4 {
    color: var(--bg-accent);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.preview-amount {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--bg-accent);
    font-family: 'Courier New', monospace;
}

/* Custom Currency Fields */
#customCurrencyFields {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1rem;
    margin: 1rem 0;
}

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

#customCurrencyFields .form-group:last-child {
    margin-bottom: 0;
}

/* Currency Select Styling */
#currencySelect {
    font-size: 1rem;
    padding: 0.75rem;
    border: 2px solid var(--bg-secondary);
    border-radius: 12px;
    background: var(--input-bg);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

#currencySelect:focus {
    outline: none;
    border-color: var(--bg-tertiary);
    box-shadow: 0 0 0 3px var(--shadow-light);
}

/* Settings Form Specific */
#settingsForm .form-group {
    margin-bottom: 1rem;
}

#settingsForm .form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

#settingsForm input[type="text"] {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--bg-secondary);
    border-radius: 12px;
    font-size: 1rem;
    background: var(--input-bg);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

#settingsForm input[type="text"]:focus {
    outline: none;
    border-color: var(--bg-tertiary);
    box-shadow: 0 0 0 3px var(--shadow-light);
}

#settingsForm select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--bg-secondary);
    border-radius: 12px;
    font-size: 1rem;
    background: var(--input-bg);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

#settingsForm select:focus {
    outline: none;
    border-color: var(--bg-tertiary);
    box-shadow: 0 0 0 3px var(--shadow-light);
}

/* Modal Content Adjustments for Settings */
#settingsModal .modal-content {
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
}

/* Data Management Section */
.data-management-section {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.data-management-section h3 {
    color: var(--bg-accent);
    margin-bottom: 1rem;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.data-management-group {
    margin-bottom: 1.5rem;
}

.data-management-group:last-child {
    margin-bottom: 0;
}

.data-management-group h4 {
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.button-group {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.button-group .btn {
    flex: 1;
    min-width: 140px;
    justify-content: center;
}