/* CSS Variables for theme colors */
:root {
    --primary-color: #0071e3;
    --background-color: #ffffff;
    --text-color: #1d1d1f;
    --card-background: #f5f5f7;
    --border-color: #d2d2d7;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

/* Dark theme variables */
[data-theme="dark"] {
    --primary-color: #2997ff;
    --background-color: #000000;
    --text-color: #f5f5f7;
    --card-background: #1d1d1f;
    --border-color: #333336;
    --shadow-color: rgba(255, 255, 255, 0.1);
}

/* Reset default styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

/* Base styles */
body {
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

/* Main container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header styles */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 600;
}

/* Theme toggle button */
.theme-toggle {
    cursor: pointer;
    font-size: 1.5rem;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color 0.3s;
}

.theme-toggle:hover {
    background-color: var(--card-background);
}

/* Dashboard layout */
.dashboard {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

/* Card styles for balance and stats */
.balance-card, .stat-card {
    background-color: var(--card-background);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 4px 6px var(--shadow-color);
    transition: transform 0.3s;
}

.balance-card:hover, .stat-card:hover {
    transform: translateY(-5px);
}

.balance-card {
    grid-column: 1 / -1;
}

/* Stats grid layout */
.stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

/* Typography styles */
h2, h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
}

.balance-amount, .income-amount, .expense-amount {
    font-size: 2rem;
    font-weight: 600;
}

/* Transactions section */
.transactions {
    margin-bottom: 2rem;
}

.transaction-list {
    background-color: var(--card-background);
    border-radius: 20px;
    padding: 1rem;
    box-shadow: 0 4px 6px var(--shadow-color);
    max-height: 400px;
    overflow-y: auto;
}

/* Individual transaction styles */
.transaction {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    margin-bottom: 0.5rem;
    border-radius: 12px;
    background-color: var(--background-color);
    transition: transform 0.2s, box-shadow 0.2s;
}

.transaction:hover {
    transform: translateX(5px);
    box-shadow: 0 2px 4px var(--shadow-color);
}

/* Transaction information styles */
.transaction-info {
    flex: 1;
}

.transaction-info h4 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
    color: var(--text-color);
}

.transaction-info p {
    font-size: 0.9rem;
    color: var(--text-color);
    opacity: 0.7;
}

.transaction-date {
    font-size: 0.8rem;
    color: var(--text-color);
    opacity: 0.6;
    margin-top: 0.25rem;
}

/* Transaction amount styles */
.transaction-amount {
    font-weight: 600;
    font-size: 1.1rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    min-width: 100px;
    text-align: right;
}

.transaction-amount.income {
    color: #34c759;
    background-color: rgba(52, 199, 89, 0.1);
}

.transaction-amount.expense {
    color: #ff3b30;
    background-color: rgba(255, 59, 48, 0.1);
}

/* Transaction action buttons */
.transaction-actions {
    display: flex;
    gap: 0.5rem;
    margin-left: 1rem;
}

.transaction-actions button {
    background: none;
    border: none;
    color: var(--text-color);
    opacity: 0.5;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: opacity 0.2s, background-color 0.2s;
}

.transaction-actions button:hover {
    opacity: 1;
    background-color: var(--card-background);
}

/* Filter buttons */
.transaction-filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 8px;
    background-color: var(--card-background);
    color: var(--text-color);
    cursor: pointer;
    transition: background-color 0.2s;
}

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

/* Chart container */
.chart-container {
    background-color: var(--card-background);
    border-radius: 20px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px var(--shadow-color);
}

/* Add transaction button */
.add-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 6px var(--shadow-color);
    transition: transform 0.3s;
}

.add-btn:hover {
    transform: scale(1.1);
}

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

.modal-content {
    background-color: var(--background-color);
    margin: 10% auto;
    padding: 2rem;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 4px 6px var(--shadow-color);
}

.close {
    float: right;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Form styles */
.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
}

input, select {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background-color: var(--card-background);
    color: var(--text-color);
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

.submit-btn:hover {
    background-color: var(--primary-color);
    opacity: 0.9;
}

/* Responsive design */
@media (max-width: 768px) {
    .dashboard {
        grid-template-columns: 1fr;
    }
    
    .stats {
        grid-template-columns: 1fr;
    }
}