/* ============================================
   EXPENSE TRACKER - WORKING VERSION
   ============================================ */

/* CSS Variables for Theming */
:root {
    /* Primary Colors */
    --primary-color: #4361ee;
    --primary-light: #4895ef;
    --primary-dark: #3a0ca3;
    --secondary-color: #7209b7;
    
    /* Financial Colors */
    --income-color: #06d6a0;
    --expense-color: #ef476f;
    --savings-color: #118ab2;
    
    /* Light Theme */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --bg-card: #ffffff;
    --bg-hover: #f1f3f9;
    
    /* Text Colors */
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --text-light: #ffffff;
    
    /* Borders & Shadows */
    --border-color: #e0e0e0;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    --box-shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Transitions */
    --transition: all 0.3s ease;
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Inter', sans-serif;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --bg-tertiary: #2d2d2d;
    --bg-card: #1e1e1e;
    --bg-hover: #2d2d2d;
    
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #6d6d6d;
    
    --border-color: #333333;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    --box-shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: var(--font-secondary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: var(--transition);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: opacity 0.5s ease;
}

.loading-content {
    text-align: center;
    color: white;
}

.logo-circle {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 2.5rem;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.loading-progress {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    margin: 0 auto var(--spacing-md);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: white;
    animation: loading 2s ease-in-out infinite;
}

@keyframes loading {
    0% { width: 0%; }
    50% { width: 100%; }
    100% { width: 0%; }
}

/* Header */
.header {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--box-shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.logo-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

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

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.logo-text h1 {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.tagline {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.header-stats {
    display: flex;
    gap: var(--spacing-lg);
}

.mini-stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.stat-value {
    font-size: 1.2rem;
    font-weight: 600;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.currency-display {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    font-weight: 500;
}

.theme-toggle {
    position: relative;
}

.toggle-checkbox {
    display: none;
}

.toggle-label {
    width: 60px;
    height: 30px;
    background: var(--bg-tertiary);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-sm);
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.toggle-label i {
    font-size: 0.9rem;
    z-index: 1;
}

.toggle-label .fa-sun {
    color: #ffd166;
}

.toggle-label .fa-moon {
    color: #6c757d;
}

.toggle-ball {
    position: absolute;
    width: 22px;
    height: 22px;
    background: var(--primary-color);
    border-radius: 50%;
    left: 4px;
    transition: transform var(--transition);
}

.toggle-checkbox:checked + .toggle-label .toggle-ball {
    transform: translateX(30px);
}

/* Overview Section */
.overview-section {
    margin-bottom: var(--spacing-lg);
}

.section-header {
    margin-bottom: var(--spacing-lg);
}

.section-header h2 {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.section-header h2 i {
    color: var(--primary-color);
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.overview-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.overview-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-lg);
}

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

.card-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.income-card .card-icon {
    background: linear-gradient(135deg, var(--income-color), #06d6a0);
}

.expense-card .card-icon {
    background: linear-gradient(135deg, var(--expense-color), #ef476f);
}

.balance-card .card-icon {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
}

.card-content h3 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
}

.amount-display {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-bottom: var(--spacing-sm);
}

.currency-symbol {
    font-size: 1.2rem;
    font-weight: 600;
}

.amount {
    font-size: 2rem;
    font-weight: 700;
    font-family: var(--font-primary);
}

.card-subtext {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Main Grid Section */
.main-grid-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

@media (max-width: 1024px) {
    .main-grid-section {
        grid-template-columns: 1fr;
    }
}

/* Form Container */
.form-container {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--box-shadow);
}

.form-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
}

.form-header h3 {
    font-family: var(--font-primary);
    font-size: 1.3rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.form-tabs {
    display: flex;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    padding: 4px;
}

.tab-btn {
    padding: 8px 16px;
    border: none;
    background: none;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-secondary);
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn.active {
    background: var(--bg-card);
    color: var(--text-primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Form Elements */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-secondary);
}

label i {
    margin-right: 8px;
    color: var(--primary-color);
}

input, select {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    font-family: var(--font-secondary);
    font-size: 1rem;
    transition: var(--transition);
}

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

.input-with-prefix {
    position: relative;
}

.input-prefix {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-weight: 600;
    color: var(--text-primary);
}

.input-with-prefix input {
    padding-left: 30px;
}

/* Category Grid */
.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.category-item {
    padding: 12px 8px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.category-item i {
    font-size: 1.2rem;
    margin-bottom: 4px;
}

.category-item span {
    font-size: 0.9rem;
}

.category-item.active {
    border-color: var(--primary-color);
    background: rgba(67, 97, 238, 0.1);
    color: var(--primary-color);
}

/* Payment Methods */
.payment-methods {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.payment-method {
    flex: 1;
    min-width: 80px;
    padding: 12px 8px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.payment-method.active {
    border-color: var(--primary-color);
    background: rgba(67, 97, 238, 0.1);
    color: var(--primary-color);
}

.payment-method i {
    font-size: 1.2rem;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-secondary);
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(67, 97, 238, 0.3);
}

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

.btn-secondary:hover {
    background: var(--bg-tertiary);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-danger {
    background: linear-gradient(135deg, #ef476f, #f72585);
    color: white;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(239, 71, 111, 0.3);
}

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

.btn-submit {
    flex: 2;
}

/* Error Message */
.error-message {
    color: #ef476f;
    font-size: 0.9rem;
    margin-top: 4px;
    display: none;
}

.form-message {
    padding: 12px;
    border-radius: var(--border-radius-sm);
    margin-top: var(--spacing-md);
    display: none;
}

.form-message.success {
    background: rgba(6, 214, 160, 0.1);
    color: var(--income-color);
    border: 1px solid rgba(6, 214, 160, 0.3);
}

.form-message.error {
    background: rgba(239, 71, 111, 0.1);
    color: var(--expense-color);
    border: 1px solid rgba(239, 71, 111, 0.3);
}

/* Chart Container */
.chart-container {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--box-shadow);
}

.chart-header {
    margin-bottom: var(--spacing-lg);
}

.chart-header h3 {
    font-family: var(--font-primary);
    font-size: 1.3rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.chart-wrapper {
    height: 300px;
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.chart-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--border-color);
}

.chart-stat {
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.stat-value {
    display: block;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Transactions Section */
.transaction-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.search-box {
    position: relative;
}

.search-box i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-box input {
    padding-left: 40px;
}

.filter-group {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.action-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

/* Transactions Table */
.transactions-table-container {
    margin-bottom: var(--spacing-lg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.table-responsive {
    overflow-x: auto;
}

.transactions-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
}

.transactions-table thead {
    background: var(--bg-secondary);
}

.transactions-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.9rem;
    border-bottom: 2px solid var(--border-color);
}

.transactions-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.transactions-table tbody tr:hover {
    background: var(--bg-hover);
}

.text-right {
    text-align: right;
}

.income-row {
    border-left: 4px solid var(--income-color);
}

.expense-row {
    border-left: 4px solid var(--expense-color);
}

.category-badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--bg-secondary);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.type-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.type-badge.income {
    background: rgba(6, 214, 160, 0.1);
    color: var(--income-color);
}

.type-badge.expense {
    background: rgba(239, 71, 111, 0.1);
    color: var(--expense-color);
}

.amount-cell {
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1.1rem;
}

.income-amount {
    color: var(--income-color);
}

.expense-amount {
    color: var(--expense-color);
}

.action-buttons-cell {
    display: flex;
    gap: 8px;
}

.action-btn {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.empty-row td {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
}

.empty-state {
    text-align: center;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.3;
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.empty-state p {
    font-size: 1rem;
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.project-info {
    font-style: italic;
    margin-top: 4px;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-dialog {
    width: 90%;
    max-width: 500px;
    transform: translateY(-20px);
    transition: var(--transition);
}

.modal.active .modal-dialog {
    transform: translateY(0);
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow-lg);
}

.modal-header {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-family: var(--font-primary);
    font-size: 1.3rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.close-modal {
    background: none;
    border: none;
    font-size: 1.8rem;
    color: white;
    cursor: pointer;
    line-height: 1;
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-body textarea {
    width: 100%;
    height: 200px;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-family: monospace;
    resize: vertical;
    margin-bottom: var(--spacing-lg);
    background: var(--bg-card);
    color: var(--text-primary);
}

.modal-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: linear-gradient(135deg, var(--income-color), #06d6a0);
    color: white;
    padding: 12px 24px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--box-shadow-lg);
    z-index: 1000;
    transform: translateX(100%);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Dialog */
.dialog {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.dialog.active {
    opacity: 1;
    visibility: visible;
}

.dialog-content {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    max-width: 400px;
    width: 90%;
    text-align: center;
    box-shadow: var(--box-shadow-lg);
    transform: translateY(-20px);
    transition: var(--transition);
}

.dialog.active .dialog-content {
    transform: translateY(0);
}

.dialog-icon {
    font-size: 3rem;
    color: var(--expense-color);
    margin-bottom: var(--spacing-lg);
}

.dialog-message {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.dialog-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }
    
    .header {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .logo-section {
        flex-direction: column;
        text-align: center;
    }
    
    .header-stats {
        border-top: 2px solid var(--border-color);
        padding-top: var(--spacing-md);
        justify-content: center;
    }
    
    .header-controls {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .filter-group {
        flex-direction: column;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .overview-grid {
        grid-template-columns: 1fr;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
    }
    
    .payment-methods {
        flex-direction: column;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

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