:root {
    --bg-color: #ffffff;
    --text-color: #333333;
    --chart-bg: #ffffff;
    --chart-text: #131722;
    --chart-grid: #d6dcde;
    --select-bg: #f5f5f5;
    --select-border: #e0e0e0;
    --location-text: #666666;
    --share-button-bg: #f5f5f5;
    --share-button-hover: #e0e0e0;
    --share-button-active: #d0d0d0;
}

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.content-wrapper {
    flex: 1 0 auto;
    padding: 10px 20px 0;
    width: 100%;
    box-sizing: border-box;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #1e222d;
        --text-color: #ffffff;
        --chart-bg: #1e222d;
        --chart-text: #d1d4dc;
        --chart-grid: #2B2B43;
        --select-bg: #2B2B43;
        --select-border: #4a4a4a;
        --location-text: #8e8e8e;
        --share-button-bg: #2B2B43;
        --share-button-hover: #363a52;
        --share-button-active: #404663;
    }
}

#chart-container {
    width: 100%;
    max-width: 800px;
    height: 400px;
    margin: 20px auto;
}
h1 {
    text-align: center;
    margin-top: 20px;
}
.controls {
    text-align: center;
    margin: 20px auto;
    max-width: 800px;
}
select {
    padding: 8px 16px;
    padding-right: 32px;
    font-size: 16px;
    background-color: var(--select-bg);
    color: var(--text-color);
    border: 1px solid var(--select-border);
    border-radius: 4px;
    cursor: pointer;
    outline: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='292.4' height='292.4'%3E%3Cpath fill='%23666666' d='M287 69.4a17.6 17.6 0 0 0-13-5.4H18.4c-5 0-9.3 1.8-12.9 5.4A17.6 17.6 0 0 0 0 82.2c0 5 1.8 9.3 5.4 12.9l128 127.9c3.6 3.6 7.8 5.4 12.8 5.4s9.2-1.8 12.8-5.4L287 95c3.5-3.5 5.4-7.8 5.4-12.8 0-5-1.9-9.2-5.4-12.8z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 10px auto;
}

@media (prefers-color-scheme: dark) {
    select {
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='292.4' height='292.4'%3E%3Cpath fill='%238e8e8e' d='M287 69.4a17.6 17.6 0 0 0-13-5.4H18.4c-5 0-9.3 1.8-12.9 5.4A17.6 17.6 0 0 0 0 82.2c0 5 1.8 9.3 5.4 12.9l128 127.9c3.6 3.6 7.8 5.4 12.8 5.4s9.2-1.8 12.8-5.4L287 95c3.5-3.5 5.4-7.8 5.4-12.8 0-5-1.9-9.2-5.4-12.8z'/%3E%3C/svg%3E");
    }
}

select:hover {
    filter: brightness(1.1);
}
select:focus {
    outline: none;
    border-color: var(--select-border);
}
select:active {
    outline: none;
    border-color: var(--select-border);
}
#location-info {
    text-align: center;
    margin: 10px auto;
    font-size: 14px;
    color: var(--location-text);
}

.share-container {
    text-align: center;
    margin: 20px auto;
    max-width: 800px;
}

.share-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    margin: 0 8px;
    background-color: var(--share-button-bg);
    color: var(--text-color);
    border: 1px solid var(--select-border);
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
    text-decoration: none;
}

.share-button:hover {
    background-color: var(--share-button-hover);
}

.share-button:active {
    background-color: var(--share-button-active);
}

.share-button svg {
    width: 16px;
    height: 16px;
    margin-right: 8px;
    fill: var(--text-color);
}

#copy-confirmation {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--text-color);
    color: var(--bg-color);
    padding: 8px 16px;
    border-radius: 4px;
    font-size: 14px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

#copy-confirmation.show {
    opacity: 1;
}

.language-footer {
    flex-shrink: 0;
    margin-top: 0;
    padding: 20px 0;
    border-top: 1px solid var(--select-border);
    text-align: center;
    background-color: var(--bg-color);
    width: 100%;
    zoom: 0.8;
}

.language-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
    max-width: 800px;
    margin: 0 auto;
    margin-bottom: 10px;
}

.email-contact {
    margin-top: 10px;
}

.email-contact a {
    color: var(--location-text);
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.email-contact a:hover {
    opacity: 0.8;
}

.language-links a {
    color: var(--text-color);
    text-decoration: none;
    padding: 6px 8px 2px;
    border-radius: 4px;
    transition: background-color 0.2s ease;
}

.language-links a:hover {
    background-color: var(--share-button-hover);
}

.language-links a.active {
    background-color: var(--share-button-bg);
}

@media (max-width: 600px) {
    .language-links {
        gap: 8px;
    }
    
    .language-links a {
        font-size: 14px;
    }
}

.breadcrumb {
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--text-color);
    text-decoration: none;
}

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

.breadcrumb .separator {
    margin: 0 0.5rem;
    color: var(--text-color);
    opacity: 0.5;
}

h1 {
    margin: 0 0 1.5rem;
    font-size: 1.5rem;
    font-weight: 600;
}

.seo-content {
    max-width: 800px;
    margin: 40px auto;
    padding: 0 20px;
    color: var(--location-text);
    font-size: 0.95rem;
    line-height: 1.6;
}

.seo-content h2 {
    font-size: 1.4rem;
    color: var(--text-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.seo-content h3 {
    font-size: 1.1rem;
    color: var(--text-color);
    margin: 1.5rem 0 0.8rem;
    font-weight: 600;
}

.seo-content p {
    margin-bottom: 1rem;
}

.seo-content ul {
    margin: 0.8rem 0;
    padding-left: 1.2rem;
}

.seo-content li {
    margin-bottom: 0.5rem;
}

.seo-content strong {
    color: var(--text-color);
}

@media (max-width: 600px) {
    #chart-container {
        height: 300px;
        margin: 10px auto;
    }

    .content-wrapper {
        padding: 10px 10px 0;
    }

    .controls {
        display: flex;
        flex-direction: column;
        gap: 10px;
        padding: 0 10px;
    }

    select {
        width: 100%;
        margin: 0 !important;
    }

    h1 {
        font-size: 1.2rem;
        margin: 0 0 1rem;
    }

    .share-container {
        display: flex;
        flex-direction: column;
        gap: 10px;
        padding: 0 10px;
    }

    .share-button {
        width: 100%;
        margin: 0;
        justify-content: center;
    }

    .breadcrumb {
        font-size: 0.8rem;
        padding: 0 10px;
        white-space: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .breadcrumb::-webkit-scrollbar {
        display: none;
    }

    #location-info {
        padding: 0 10px;
    }

    .seo-content {
        padding: 0 15px;
        margin: 30px auto;
    }

    .seo-content h2 {
        font-size: 1.2rem;
    }

    .seo-content h3 {
        font-size: 1rem;
    }

    .language-footer {
        padding: 15px 0;
    }

    .language-links {
        padding: 0 10px;
    }
}

@media (max-width: 400px) {
    #chart-container {
        height: 250px;
    }

    h1 {
        font-size: 1.1rem;
    }

    .share-button {
        font-size: 13px;
        padding: 6px 12px;
    }

    .share-button svg {
        width: 14px;
        height: 14px;
    }
}