:root {
    --primary-color: #007BFF;
    --secondary-color: #6c757d;
    --accent-color: #28a745;
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --border-color: #e9ecef;
    --shadow-color: rgba(0, 0, 0, 0.05);
}

* {
    box-sizing: border-box;
    font-family: 'Noto Sans TC', sans-serif;
}

body {
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: #333;
    line-height: 1.6;
}

.header {
    background-color: var(--card-bg);
    padding: 15px 40px; /* 縮減高度 */
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px var(--shadow-color);
}

.header h1 {
    font-size: 24px;
    margin: 0;
    color: var(--primary-color); /* 改變標題顏色 */
}

.main-content-container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
}

.tabs {
    display: flex;
    margin-bottom: 20px;
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 2px 4px var(--shadow-color);
}

.tab-button {
    padding: 15px 25px;
    border: none;
    background-color: transparent;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    color: var(--secondary-color);
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    flex-grow: 1;
}

.tab-button:hover {
    color: var(--primary-color);
}

.tab-button.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.section-box {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 2px 4px var(--shadow-color);
    margin-bottom: 20px;
}

h2, h3 {
    color: var(--primary-color);
    margin-top: 0;
}

.description {
    color: var(--secondary-color);
    font-size: 14px;
    margin-top: -10px;
    margin-bottom: 15px;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

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

.btn-primary:hover {
    background-color: #0056b3;
}

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

.btn-secondary:hover {
    background-color: #5a6268;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 15px 10px;
    align-items: center;
}

.form-grid label {
    text-align: right;
    font-weight: bold;
}

.form-grid input,
.form-grid select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    transition: border-color 0.3s ease;
}

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

.form-button {
    grid-column: 1 / span 2;
    margin-top: 10px;
}

.form-buttons {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

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

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    text-align: left;
}

th {
    background-color: #e9ecef;
    font-weight: bold;
}

tbody tr:nth-child(even) {
    background-color: #f2f2f2;
}

.year-box {
    display: flex;
    align-items: center;
    gap: 10px;
}

.login-box {
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 15px var(--shadow-color);
    text-align: center;
    max-width: 400px;
    margin: 100px auto;
}

.login-box h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.login-box form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.login-box input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
}

.budget-item-field {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-bottom: 10px;
}

.budget-item-field input {
    flex-grow: 1;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 14px;
}

#pagination-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
    gap: 15px;
}