:root {
    --dark-bg: #121212;
    --card-bg: #1e1e1e;
    --primary: #2196F3;
    --primary-dark: #1976D2;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border-color: #333333;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

h1 {
    text-align: center;
    margin-bottom: 30px;
    font-weight: 500;
    letter-spacing: 2px;
}

.card {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.input-field, .textarea-field {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-size: 16px;
}

.textarea-field {
    resize: vertical;
    min-height: 120px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    background-color: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.btn .material-icons {
    margin-right: 8px;
    font-size: 18px;
}

.btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.primary-btn {
    background-color: var(--primary);
    border: none;
}

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

.small-btn {
    padding: 6px 12px;
    font-size: 12px;
}

.small-btn .material-icons {
    font-size: 16px;
}

/* Switch styles */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
    margin-right: 10px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    transition: .4s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
}

input:checked + .slider {
    background-color: var(--primary);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.slider.round {
    border-radius: 24px;
}

.slider.round:before {
    border-radius: 50%;
}

/* Checkbox styles */
.checkbox-container {
    display: block;
    position: relative;
    padding-left: 35px;
    margin-bottom: 12px;
    cursor: pointer;
    font-size: 16px;
    user-select: none;
    color: var(--text-secondary);
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 20px;
    width: 20px;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 3px;
}

.checkbox-container:hover input ~ .checkmark {
    background-color: rgba(255, 255, 255, 0.1);
}

.checkbox-container input:checked ~ .checkmark {
    background-color: var(--primary);
    border-color: var(--primary);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.checkbox-container .checkmark:after {
    left: 7px;
    top: 3px;
    width: 4px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Result section */
#resultSection {
    margin-top: 30px;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

#resultSection h3 {
    margin-bottom: 15px;
    color: var(--text-secondary);
}

.result-part {
    margin-bottom: 15px;
}

.result-part-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.result-part-label {
    font-weight: 500;
    color: var(--primary);
}

.copy-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
}

.copy-btn:hover {
    color: var(--primary);
}

.copy-btn .material-icons {
    font-size: 18px;
    margin-right: 4px;
}

#totalPartsInfo {
    margin-bottom: 15px;
    color: var(--primary);
    font-weight: 500;
}

/* Multi-part inputs */
.multi-part-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.part-input-container {
    margin-bottom: 15px;
    position: relative;
}

.part-input-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.remove-part-btn {
    background: none;
    border: none;
    color: #f44336;
    cursor: pointer;
    display: flex;
    align-items: center;
}

.remove-part-btn .material-icons {
    font-size: 18px;
}

/* Round button styles */
.round-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--primary);
    color: white;
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    margin-left: 10px;
    transition: background-color 0.3s;
}

.round-btn:hover {
    background-color: var(--primary-dark);
}

.round-btn .material-icons {
    font-size: 18px;
}

/* File save dialog styles */
.file-save-dialog {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
    width: 400px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.file-save-dialog h3 {
    margin-top: 0;
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.dialog-buttons {
    display: flex;
    justify-content: flex-end;
    margin-top: 20px;
}

.dialog-buttons .btn {
    margin-left: 10px;
}

/* Button group styles */
.button-group {
    display: flex;
    justify-content: space-between;
}

.button-group .btn {
    margin-right: 10px;
}

.button-group .btn:last-child {
    margin-right: 0;
}