/* General Body and Layout */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f4f7f6;
    margin: 0;
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.page-container {
    padding: 1rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.page {
    display: none;
    flex: 1;
}

.page.active {
    display: flex;
    flex-direction: column;
}

/* Header and Navigation */
.bottom-nav {
    display: flex;
    justify-content: space-around;
    align-items: center;
    background-color: #fff;
    box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.1);
    position: sticky;
    bottom: 0;
    width: 100%;
    z-index: 1000;
}

.nav-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 0.5rem;
    text-decoration: none;
    color: #777;
    font-size: 0.75rem;
    flex-grow: 1;
    transition: color 0.2s;
}

.nav-button.active {
    color: #007BFF;
}

.nav-button i {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.sub-nav-bar {
    display: flex;
    justify-content: space-around;
    background-color: #e9ecef;
    padding: 0.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.sub-nav-button {
    flex: 1;
    text-align: center;
    text-decoration: none;
    color: #555;
    padding: 0.5rem;
    border-radius: 5px;
    transition: background-color 0.2s;
}

.sub-nav-button.active {
    background-color: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.sub-tab-content {
    flex: 1;
}

.sub-tab {
    display: none;
}

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

/* Main Content and Forms */
h1 {
    text-align: center;
    color: #007BFF;
}

section {
    background-color: #fff;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.data-entry-form {
    margin-bottom: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 1rem;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: #555;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group select {
    padding: 0.75rem;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1rem;
}

.form-group input[type="text"]:focus,
.form-group input[type="number"]:focus,
.form-group input[type="date"]:focus,
.form-group select:focus {
    outline: none;
    border-color: #007BFF;
    box-shadow: 0 0 5px rgba(0, 123, 255, 0.2);
}

.form-group.checkbox-group {
    flex-direction: row;
    align-items: center;
}

.form-group.checkbox-group input[type="checkbox"] {
    margin-left: 0.5rem;
}

button {
    width: 100%;
    padding: 0.75rem;
    background-color: #007BFF;
    color: #fff;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #0056b3;
}

/* Search Results and Summary */
.search-section,
.summary-section {
    margin-top: 1.5rem;
}

.search-results {
    margin-top: 1rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

th,
td {
    padding: 0.75rem;
    border-bottom: 1px solid #ddd;
    text-align: left;
}

th {
    background-color: #f8f9fa;
    font-weight: bold;
}

.calculation-results {
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: #f8f9fa;
    border-radius: 8px;
}

/* --- Settings Page Styles --- */
.settings-section .form-group {
    margin-bottom: 1rem;
}

.settings-list {
    margin-top: 2rem;
}

.settings-list h3 {
    border-bottom: 2px solid #ccc;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

#merchantList,
#descriptionList {
    list-style-type: none;
    padding: 0;
}

.settings-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #f9f9f9;
    padding: 1rem;
    margin-bottom: 0.5rem;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.settings-list .item-info {
    font-size: 1.1em;
}

.settings-list .item-actions {
    display: flex;
    gap: 0.5rem;
}

.settings-list .edit-btn,
.settings-list .delete-btn {
    background-color: #eee;
    border: none;
    padding: 0.5rem;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9em;
    transition: background-color 0.2s ease;
}

.settings-list .edit-btn:hover {
    background-color: #ddd;
}

.settings-list .delete-btn:hover {
    background-color: #f44336;
    color: white;
}