html {
    scroll-behavior: smooth;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: 8px;
    box-sizing: border-box;
    color: var(--color-text-body);
    background:
            radial-gradient(circle at top left, rgba(174, 223, 244, 0.38), transparent 28%),
            radial-gradient(circle at right center, rgba(152, 210, 240, 0.22), transparent 24%),
            var(--color-bg-primary);
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

:focus-visible {
    outline: 3px solid var(--color-accent-strong);
    outline-offset: 3px;
}

.surface-card {
    background: var(--color-bg-card-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(18px);
}

main {
    flex: 1;
    margin: 20px;
}

footer {
    flex-shrink: 0;
    color: var(--color-text-muted);
    background-color: var(--color-bg-secondary);
    box-shadow: 0 -1px 3px 0 rgba(17, 17, 26, 0.1);
    z-index: 0;
}

@media (min-width: 1024px) {
    footer { text-align: left; }
    main   { position: relative; }
}

@media (max-width: 639px) {
    body {
        padding: 0;
    }
}

.container {
    padding-left: 1rem;
    padding-right: 1rem;
    margin-left: auto;
    margin-right: auto;
    max-width: var(--container-max);
}

@media (min-width: 640px) {
    .container {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.secondary__page-title--container {
    text-align: center;
}

.secondary__page-title {
    margin-bottom: 1rem;
    text-align: center;
    color: var(--color-text-primary);
    font-size: 1.2rem;
    font-weight: 500;
    display: inline-block;
    position: relative;
}

.secondary__page-title::after {
    content: '';
    display: block;
    width: 100%;
    height: .25rem;
    background-color: var(--color-accent);
    border-radius: 9999px;
    margin: .5rem auto 0;
}

.secondary__page-paragraph { margin: 20px 0; }
.text__center              { text-align: center; }
.warningTitle              { color: var(--color-warning); }

.image-container {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

.image-container img {
    max-width: 100%;
    height: auto;
    border: 1px solid #ccc;
}

/* Настройки отображения */
.settings-container {
    display: flex;
    align-items: center;
    flex-direction: row;
    justify-content: space-between;
    gap: 30px;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    line-height: 1.5rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

/* Переключатель языка */
.switch-button {
    background: rgba(255, 255, 255, 0.56);
    border-radius: 30px;
    overflow: hidden;
    width: 100px;
    text-align: center;
    position: relative;
    padding-right: 50px;
    margin-left: 100px;
}
.switch-button:before {
    content: 'Бел';
    position: absolute;
    top: 0; bottom: 0; right: 0;
    width: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
    pointer-events: none;
}
.switch-button-checkbox {
    cursor: pointer;
    position: absolute;
    top: 0; left: 0; bottom: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    z-index: 2;
}
.switch-button-checkbox:checked + .switch-button-label:before {
    transform: translateX(50px);
    transition: transform 300ms linear;
}
.switch-button-checkbox + .switch-button-label {
    position: relative;
    display: block;
    user-select: none;
    pointer-events: none;
}
.switch-button-checkbox + .switch-button-label:before {
    content: '';
    background: var(--color-bg-card);
    height: 100%;
    width: 100%;
    position: absolute;
    left: 0; top: 0;
    border-radius: 30px;
    transform: translateX(0);
    transition: transform 300ms;
}
.switch-button-checkbox + .switch-button-label .switch-button-label-span {
    position: relative;
}

.user-name { font-weight: 500; color: var(--color-warning); }
.specNotShown { display: none; }
.flex {
    display: flex;
    padding-top: 1rem;
    padding-bottom: 1rem;
    justify-content: space-between;
    align-items: center;
}
@media (min-width: 768px) {
    .flex { justify-content: flex-start; }
}

.a11y-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--color-text-muted);
    font-size: 0.8rem;
    cursor: pointer;
    white-space: nowrap;
}

.a11y-toggle-btn:hover {
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
}