:root {
    --bg: #fbfcfe;
    --text: #1f2d3d;
    --panel: #ffffff;
    --panel-strong: #f4f7fb;
    --border: #e2e8f0;
    --accent: #3a6ea5;
    --accent-2: #6e93bc;
    --accent-soft: #e8f0f8;
}

[data-theme="dark"] {
    --bg: #111827;
    --text: #e5e7eb;
    --panel: #1f2937;
    --panel-strong: #243244;
    --border: #374151;
    --accent: #7aa2cc;
    --accent-2: #9ab7d6;
    --accent-soft: #2c3f55;
}

* {
    box-sizing: border-box;
}

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

body {
    font-family: Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

.topbar {
    width: 100%;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    background: var(--panel);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.brand {
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.2px;
}

.controls {
    display: flex;
    justify-content: flex-start;
    gap: 10px;
}

#langSelect,
#themeToggle {
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    padding: 8px 10px;
    border-radius: 8px;
}

.main {
    min-height: calc(100vh - 57px);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 24px 16px;
}

.card {
    width: min(780px, 100%);
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 20px 18px 24px;
}

.medical-image {
    max-width: 320px;
    margin: 0 auto 8px;
}

.medical-image svg {
    width: 100%;
    height: auto;
    display: block;
}

#constructionText {
    margin: 0;
    font-size: clamp(2rem, 8vw, 4rem);
    color: var(--accent);
}

#browserTip {
    margin: 10px auto 0;
    max-width: 54ch;
    color: var(--text);
    opacity: 0.9;
}