:root {
    /* Primary colors */
    --color-primary: #BC133E;
    --color-primary-light: rgba(233, 30, 99, 0.05);

    /* Text colors */
    --color-text-primary: #3A454C;
    --color-text-inverse: white;

    /* Background colors */
    --color-bg-page: #F5F5F5;
    --color-bg-container: #FFFFFF;
    --color-bg-section: #FCFCFC;
    --color-bg-button: #EEEEEE;
    --color-bg-button-dark: #3A454C;

    /* Border colors */
    --color-border-light: #ddd;
    --color-border-medium: #bbb;

    /* Shadow colors */
    --color-shadow: rgba(0, 0, 0, 0.15);
}

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

body {
    font-family: 'Open Sans', sans-serif;
    background-color: var(--color-bg-page);
    color: var(--color-text-primary);
    line-height: 1.6;
}

.space {
    padding-inline: 24px;
}

.container {
    max-width: 1200px;
    padding: 20px;
    background-color: var(--color-bg-container);
    border-radius: 8px;
    margin: 16px auto;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-direction: column;
    margin-bottom: 24px;
}

.language-switcher {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    width: 100%;
}

.lang-btn {
    padding: 8px 20px;
    background-color: var(--color-bg-button);
    font-family: 'Open Sans', sans-serif;
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    border-radius: 100px;
    border: none;
    color: var(--color-text-primary);
}

.lang-btn.active {
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
}

.main-title {
    text-align: left;
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-primary);
    line-height: 1.2;
    flex: 1;
    order: 2;
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.analysis-buttons {
    display: inline-flex;
    position: relative;
    margin-bottom: 24px;
    background-color: var(--color-bg-button-dark);
    box-shadow: 0 2px 10px var(--color-shadow);
    border-radius: 100px;
}

.analysis-buttons::before {
    content: '';
    position: absolute;
    left: var(--slider-left, 0px);
    width: var(--slider-width, 0);
    height: 100%;
    background-color: var(--color-primary);
    border-radius: var(--slider-radius, 100px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 0;
}

.analysis-buttons.no-transition::before {
    transition: none;
}

.analysis-btn {
    padding: 12px 30px;
    border: none;
    background-color: transparent;
    color: var(--color-text-inverse);
    font-family: 'Open Sans', sans-serif;
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: color 0.3s ease;
    position: relative;
    z-index: 1;
    white-space: nowrap;
}

.analysis-btn:first-child {
    border-radius: 100px 0 0 100px;
}

.analysis-btn:last-child {
    border-radius: 0 100px 100px 0;
}

.analysis-btn.active {
    color: var(--color-text-inverse);
}

.analysis-btn:not(.active) {
    color: var(--color-text-inverse);
}

.selection-container {
    width: 100%;
}

.variable-selectors {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.selector-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 16px;
    border: 1px solid var(--color-border-light);
    border-radius: 8px;
    background-color: var(--color-bg-section);
}

.selector-group label {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--color-primary);
}

.variable-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option-btn {
    padding: 8px 20px;
    border: 1px solid var(--color-border-light);
    border-radius: 100px;
    background-color: var(--color-bg-container);
    color: var(--color-text-primary);
    font-family: 'Open Sans', sans-serif;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    text-align: center;
}

.option-btn:hover {
    transition: all 0.3s ease;
    border-color: var(--color-border-medium);
}

.option-btn.active {
    transition: none;
    border-color: var(--color-primary);
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
}

.variable-select {
    display: none;
}

.result-container {
    border-left: 4px solid var(--color-primary);
    background-color: var(--color-primary-light);
    border-radius: 6px;
    padding: 16px;
    width: 100%;
    margin-top: 16px;
}

.result-content p {
    font-size: 1rem;
    color: var(--color-text-primary);
    line-height: 1.4;
}

@media (max-width: 768px) {
    .space {
        padding-inline: 12px;
    }

    header {
        margin-bottom: 8px;
    }

    .main-title {
        font-size: 1.25rem;
    }

    .variable-selectors {
        grid-template-columns: 1fr;
    }

    .option-btn {
        padding: 4px 12px;
    }

    .result-container {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 12px 12px;
        margin: 12px auto;
    }

    header {
        justify-content: space-between;
        gap: 12px;
        flex-direction: row;
        align-items: flex-end;
        margin-bottom: 8px;
    }

    .main-title {
        font-size: 0.875rem;
        order: 0;
    }

    .language-switcher {
        width: auto;
    }

    .lang-btn {
        padding: 4px 12px;
    }

    .analysis-buttons {
        width: 100%;
        display: flex;
        margin-bottom: 8px;
    }

    
    .analysis-btn {
        font-size: 0.875rem;
        padding: 8px 12px;
        flex: 1;
        font-weight: 500;
    }

    .variable-selectors {
        gap: 8px;
    }

    .selector-group {
        padding: 8px 12px;
    }

    .variable-options {
        gap: 8px;
    }

    .option-btn {
        min-height: 32px;
    }

    .result-container {
        padding: 8px 12px;
        margin-top: 8px;
    }

    .result-content p {
        font-size: 0.875rem;
    }
}

@media (max-width: 350px) {
    .lang-btn {
        padding: 6px 12px;
        font-size: 0.875rem;
    }

    .analysis-btn {
        font-size: 0.75rem;
    }
}