/* General Styles */
:root {
    --bg-color: #f4f7fa;
    --text-color: #333;
    --header-bg: linear-gradient(135deg, #4a90e2, #357abd);
    --card-bg: white;
    --border-color: #ddd;
    --income-color: #28a745;
    --expense-color: #dc3545;
    --balance-color: #17a2b8;
    --btn-primary: #28a745;
    --btn-secondary: #6c757d;
    --btn-danger: #dc3545;
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --header-bg: linear-gradient(135deg, #1e3a5f, #2c5282);
    --card-bg: #1e1e1e;
    --border-color: #444;
    --income-color: #4caf50;
    --expense-color: #f44336;
    --balance-color: #00bcd4;
    --btn-primary: #4caf50;
    --btn-secondary: #757575;
    --btn-danger: #f44336;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: var(--transition);
}

header {
    background: var(--header-bg);
    color: white;
    text-align: center;
    padding: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: relative;
}

header h1 {
    margin: 0;
    font-size: 2.5em;
}

.theme-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: white;
    font-size: 1.5em;
    cursor: pointer;
    transition: var(--transition);
}

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

/* Dashboard Grid */
.dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    max-width: 1400px;
    margin: 20px auto;
    padding: 20px;
}

.widget {
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    padding: 20px;
    transition: var(--transition);
}

.widget:hover {
    transform: translateY(-5px);
}

.widget h3 {
    margin-top: 0;
    color: var(--text-color);
    border-bottom: 2px solid var(--income-color);
    padding-bottom: 10px;
}

/* Summary Widget */
.summary-cards {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}

.summary-item {
    text-align: center;
    padding: 15px;
    border-radius: 8px;
    flex: 1;
    margin: 5px;
    min-width: 150px;
}

.summary-item.income { background-color: var(--income-color); color: white; }
.summary-item.expense { background-color: var(--expense-color); color: white; }
.summary-item.balance { background-color: var(--balance-color); color: white; }

.summary-item i { font-size: 1.5em; margin-bottom: 5px; }

/* Charts Widget */
.chart-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.chart-item {
    flex: 1;
    min-width: 250px;
}

.chart-item h4 {
    text-align: center;
    margin-bottom: 10px;
}

canvas {
    max-width: 100%;
}

/* Add Entry Widget */
.form-container {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: end;
}

.form-group {
    flex: 1;
    min-width: 200px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

input, select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1em;
    background: var(--card-bg);
    color: var(--text-color);
    transition: var(--transition);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--income-color);
    box-shadow: 0 0 5px rgba(74, 144, 226, 0.5);
}

/* Recent Entries Widget */
#recentEntries {
    list-style: none;
    padding: 0;
    max-height: 200px;
    overflow-y: auto;
}

#recentEntries li {
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
}

/* Full Entries Widget */
.full-entries-widget {
    grid-column: 1 / -1;
}

.filter-section {
    margin-bottom: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background: var(--card-bg);
}

th, td {
    border: 1px solid var(--border-color);
    padding: 12px;
    text-align: left;
}

th {
    background-color: var(--bg-color);
    font-weight: bold;
}

tbody tr {
    transition: var(--transition);
}

tbody tr:hover {
    background-color: var(--bg-color);
}

tbody tr:nth-child(even) {
    background-color: rgba(0,0,0,0.05);
}

[data-theme="dark"] tbody tr:nth-child(even) {
    background-color: rgba(255,255,255,0.05);
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-danger {
    border: none;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    transition: var(--transition);
    margin: 5px;
}

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

.btn-primary:hover { background-color: #218838; transform: translateY(-2px); }

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

.btn-secondary:hover { background-color: #5a6268; transform: translateY(-2px); }

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

.btn-danger:hover { background-color: #c82333; transform: translateY(-2px); }

/* Footer */
footer {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    background: var(--bg-color);
    color: var(--text-color);
    border-top: 1px solid var(--border-color);
}

/* Animations */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
    .dashboard {
        grid-template-columns: 1fr;
    }
    .summary-cards {
        flex-direction: column;
    }
    .chart-container {
        flex-direction: column;
    }
    header h1 {
        font-size: 2em;
    }
}