:root {
    --primary-color: rgb(42, 150, 71);
    --primary-dark: rgb(29, 104, 48);
    --heading-color: rgb(23, 169, 43);
    --text-color: #333;
    --border-color: #ddd;
    --light-bg: #f9f9f9;
    --table-header-bg: #f2f2f2;
    --tab-active-bg: rgb(42, 150, 46);
    --info-bg: #e8f4ff;
    
    /* Button colors */
    --remove-btn: #e74c3c;
    --remove-btn-hover: #c0392b;
    --edit-btn: #3498db;
    --edit-btn-hover: #2980b9;
    --save-btn: #2ecc71;
    --save-btn-hover: #27ae60;
}

/* Base styles */
body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
    color: var(--text-color);
}

h1, h2, h3 {
    color: var(--heading-color);
}

/* Layout components */
.header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.form-section {
    background-color: var(--light-bg);
    padding: 20px;
    border-radius: 5px;
    margin-bottom: 20px;
}

/* Form elements */
.input-group {
    margin-bottom: 15px;
}

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

input, select {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-sizing: border-box;
}

button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: var(--primary-dark);
}

/* Results display */
.results {
    margin-top: 30px;
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    display: none;
}

.recommendation {
    background-color: var(--info-bg);
    padding: 15px;
    border-radius: 5px;
    margin-top: 20px;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

table, th, td {
    border: 1px solid var(--border-color);
}

th, td {
    padding: 12px;
    text-align: left;
}

th {
    background-color: var(--table-header-bg);
}

/* Tab system */
.tabs {
    display: flex;
    margin-bottom: 20px;
}

.tab {
    padding: 10px 20px;
    background-color: var(--table-header-bg);
    cursor: pointer;
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-radius: 5px 5px 0 0;
    margin-right: 5px;
}

.tab.active {
    background-color: var(--tab-active-bg);
    color: white;
}

.tab-content {
    display: none;
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: 0 5px 5px 5px;
}

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

/* Appliance tabs */
.appliance-tabs {
    margin-top: 10px;
    margin-bottom: 15px;
}

.appliance-tabs .tab {
    padding: 8px 16px;
    font-size: 14px;
}

.energy-tab-content {
    display: none;
    padding: 15px 0;
}

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

/* Appliance table */
#selected-appliances {
    width: 100%;
    margin-top: 15px;
    border-collapse: collapse;
}

#selected-appliances th,
#selected-appliances td {
    padding: 8px;
    text-align: left;
}

.appliance-selection-controls {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
}

.appliance-selection-controls select {
    flex-grow: 1;
}

.appliance-selection-controls button {
    padding: 8px 15px;
}

/* Small inputs in tables */
input.appliance-qty,
input.appliance-hours,
.power-edit-field {
    width: 60px;
    padding: 4px;
    text-align: center;
}

/* Special buttons */
.remove-btn {
    background-color: var(--remove-btn);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 4px 8px;
    cursor: pointer;
}

.remove-btn:hover {
    background-color: var(--remove-btn-hover);
}

/* Appliance mode tabs */
.appliance-mode-tabs {
    margin: 10px 0;
}

.appliance-mode-tabs .tab {
    padding: 6px 12px;
    font-size: 14px;
}

.appliance-mode-content {
    display: none;
    padding: 10px 0;
    margin-bottom: 15px;
}

.appliance-mode-content.active {
    display: block;
}

/* Custom appliance form */
.custom-appliance-form {
    background-color: #f5f5f5;
    padding: 15px;
    border-radius: 5px;
}

.input-row {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.input-row .input-group {
    flex: 1;
}

/* Edit buttons */
.edit-power-btn {
    background-color: var(--edit-btn);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 12px;
    margin-left: 5px;
    cursor: pointer;
}

.edit-power-btn:hover {
    background-color: var(--edit-btn-hover);
}

.save-power-btn {
    background-color: var(--save-btn);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 12px;
    margin-left: 5px;
    cursor: pointer;
}

.save-power-btn:hover {
    background-color: var(--save-btn-hover);
}

.cancel-power-btn {
    background-color: var(--remove-btn);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 12px;
    margin-left: 5px;
    cursor: pointer;
}

.cancel-power-btn:hover {
    background-color: var(--remove-btn-hover);
}

/* Responsive styles */
@media (max-width: 768px) {
    .input-row {
        flex-direction: column;
        gap: 10px;
    }
    
    .tab {
        padding: 8px 12px;
        font-size: 14px;
    }
}