:root {
    --primary-color: #ff9500;
    --primary-color-hover: #e68400;
    --secondary-color: #a6a6a6;
    --secondary-color-hover: #999;
    --text-color: #ffffff;
    --text-color-secondary: #000000;
    --border-color: #666;
    --border-color-light: #333;
    --background-dark: #111;
    --background-calculator: #1a1a1a;
    
    --spacing-xs: 3px;
    --spacing-sm: 5px;
    --spacing-md: 10px;
    --spacing-lg: 15px;
    --spacing-xl: 20px;
    
    --font-size-sm: 12px;
    --font-size-md: 16px;
    --font-size-lg: 18px;
    
    --border-radius: 5px;
    --input-height: 44px;
}

body {
    font-family: Arial, sans-serif;
    max-width: 800px;
    margin: 0;
    padding: var(--spacing-md);
    box-sizing: border-box;
    background-color: #f5f5f5;
}

h1, h3, p {
    text-align: center;
    color: #333;
}

.landing-container {
    background-color: white;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    margin: 20px auto;
}

.utilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.utility-card {
    background-color: #222;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s;
}

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

.utility-card h3 {
    color: #ff9500;
    margin-bottom: 15px;
}

.utility-card p {
    color: #ccc;
    margin-bottom: 25px;
    line-height: 1.6;
}

.utility-link {
    display: inline-block;
    background-color: #ff9500;
    color: white;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.2s;
}

.utility-link:hover {
    background-color: #e68400;
}

.calculator {
    background-color: #222;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    max-width: 400px;
    margin: 20px auto;
}

.inputGroup {
    margin-bottom: 15px;
}

.inputGroup label {
    display: block;
    color: white;
    margin-bottom: 5px;
    font-size: 14px;
}

.inputGroup input {
    width: 100%;
    height: 40px;
    font-size: 16px;
    padding: 8px;
    border: none;
    border-radius: 5px;
    background-color: #333;
    color: white;
    box-sizing: border-box;
}

.inputGroup input:focus {
    outline: 2px solid #ff9500;
    background-color: #444;
}

.inputGroup input::placeholder {
    color: #999;
}

.optional {
    color: #999;
    font-size: 12px;
}

.calculateButton {
    width: 100%;
    height: 50px;
    font-size: 18px;
    background-color: #ff9500;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin: 20px 0 15px 0;
    transition: background-color 0.2s;
}

.calculateButton:hover {
    background-color: #e68400;
}

.calculateButton:disabled {
    background-color: #666;
    cursor: not-allowed;
}

.result {
    background-color: #000;
    color: white;
    padding: 15px;
    border-radius: 5px;
    font-size: 18px;
    text-align: center;
    min-height: 20px;
}

.clearButton {
    width: 100%;
    height: 40px;
    font-size: 16px;
    background-color: #a6a6a6;
    color: black;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 10px;
    transition: background-color 0.2s;
}

.clearButton:hover {
    background-color: #999;
}

.error {
    color: #ff6b6b;
}

.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: #333;
    transition: 0.3s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: #ff9500;
}

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

.switch-label {
    display: flex;
    align-items: center;
    color: white;
    font-size: 14px;
    margin-bottom: 0;
}

.switch-container {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

.switch-group {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.switch-group-label {
    color: white;
    font-size: 14px;
    margin-bottom: 8px;
    text-align: left;
}

.navigation {
    text-align: center;
    margin-bottom: 20px;
}

.navigation a {
    color: #ff9500;
    text-decoration: none;
    font-weight: bold;
}

.navigation a:hover {
    text-decoration: underline;
}

.inputColumns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.columnGroup {
    display: flex;
    flex-direction: column;
}

.layout {
    display: grid;
    grid-template-areas: 
        "coordinateControls coordinateControls"
        "preview            preview"
        "mainParametersRow  mainParametersRow"
        "roughCutControls   roughCutControls"
        "fineCutControls    fineCutControls"
        "results            results"
        ".        CalculateButton";
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.mainParametersRow {
    grid-area: mainParametersRow;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 15px;
}

.cuttingControlsRow {
    display: grid;
    grid-template-columns: auto 1fr 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 10px 15px;
    grid-template-areas:
        "switch-area label1 label2 label3"
        "switch-area input1 input2 input3";
}

.cuttingControlsRow .switch-container {
    grid-area: switch-area;
    align-self: center;
    margin-bottom: 0;
}

.cuttingControlsRow .inputGroup:nth-child(2) {
    grid-area: label1 / label1 / input1 / input1;
    margin-bottom: 0;
}

.cuttingControlsRow .inputGroup:nth-child(3) {
    grid-area: label2 / label2 / input2 / input2;
    margin-bottom: 0;
}

.cuttingControlsRow .inputGroup:nth-child(4) {
    grid-area: label3 / label3 / input3 / input3;
    margin-bottom: 0;
}

@media (max-width: 768px) {
    .layout {
        grid-template-areas: 
            "coordinateControls"
            "preview"
            "mainParametersRow"
            "roughCutControls"
            "fineCutControls"
            "results"
            "ClearButton"
            "CalculateButton";
        grid-template-columns: 1fr;
    }
    
    .mainParametersRow {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }
    
    .cuttingControlsRow {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto auto auto;
        gap: 10px;
        grid-template-areas:
            "switch-area"
            "input1"
            "input2"
            "input3"
            ".";
    }
    
    .cuttingControlsRow .switch-container {
        justify-self: start;
        align-self: start;
    }
}

@media (max-width: 480px) {
    .mainParametersRow {
        grid-template-columns: 1fr;
        gap: 10px;
    }
}

.coordinateInputRow {
    display: grid;
    grid-template-columns: 2fr 2fr 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 10px;
    margin-bottom: 15px;
    grid-template-areas:
        "label1 label2 . ."
        "input1 input2 clearButton coordinateButton";
}

.coordinateInputRow .inputGroup:nth-child(1) {
    grid-area: label1 / label1 / input1 / input1;
    margin-bottom: 0;
}

.coordinateInputRow .inputGroup:nth-child(2) {
    grid-area: label2 / label2 / input2 / input2;
    margin-bottom: 0;
}

.coordinateInputRow .coordinateButton {
    grid-area: coordinateButton;
    height: 40px;
    font-size: 14px;
    background-color: #ff9500;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.2s;
    align-self: end;
}

.coordinateInputRow .coordinateButton:hover {
    background-color: #e68400;
}

.coordinateInputRow .coordinateClearButton {
    grid-area: clearButton;
    height: 40px;
    font-size: 14px;
    background-color: #a6a6a6;
    color: black;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.2s;
    align-self: end;
}

.coordinateInputRow .coordinateClearButton:hover {
    background-color: #999;
}

@media (max-width: 600px) {
    .coordinateInputRow {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto auto auto auto;
        gap: 15px;
        grid-template-areas:
            "label1"
            "input1"
            "label2"
            "input2"
            "clearButton"
            "coordinateButton";
    }
    
    .coordinateInputRow .coordinateButton,
    .coordinateInputRow .coordinateClearButton {
        height: 50px;
        align-self: stretch;
    }
}