:root {
    color-scheme: light;
    --color-bg: #f4f7fa;
    --color-header-bg: #ffffff;
    --color-surface: #ffffff;
    --color-surface-alt: #eef3f8;
    --color-border: #d8e1ea;
    --color-border-strong: #b7c6d6;
    --color-text: #162638;
    --color-muted: #657589;
    --color-primary: #205487;
    --color-primary-active: #ffffff;
    --shadow-md: 0 8px 24px rgba(26, 46, 67, 0.14);
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root[data-bs-theme="dark"] {
    color-scheme: dark;
    --color-bg: #0d1824;
    --color-header-bg: #12263a;
    --color-surface: #13283d;
    --color-surface-alt: #1b344d;
    --color-border: #2d4864;
    --color-border-strong: #48647f;
    --color-text: #edf4fb;
    --color-muted: #a8b8c8;
    --color-primary: #78b5e6;
    --color-primary-active: #06111d;
    --shadow-md: 0 10px 28px rgba(0, 0, 0, 0.34);
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    margin: 0;
}

.discover-shell {
    display: grid;
    grid-template-rows: auto 1fr;
    height: 100%;
    min-height: 100vh;
}

.discover-header {
    align-items: center;
    background: var(--color-header-bg);
    border-bottom: 1px solid var(--color-border);
    display: grid;
    gap: 18px;
    grid-template-columns: minmax(210px, 1fr) auto minmax(210px, 1fr);
    min-height: 56px;
    padding: 8px 18px;
    position: relative;
    z-index: 3;
}

.brand-lockup {
    align-items: center;
    display: inline-flex;
    gap: 10px;
    min-width: 0;
}

.brand-mark {
    background: var(--color-primary);
    border-radius: 3px;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 22%, transparent);
    flex: 0 0 auto;
    height: 12px;
    width: 12px;
}

.brand-name {
    color: var(--color-primary);
    font-size: 18px;
    font-weight: 800;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.view-switcher {
    align-items: center;
    background: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    display: inline-flex;
    gap: 4px;
    padding: 4px;
}

.view-switcher__button {
    appearance: none;
    background: transparent;
    border: 0;
    border-radius: 6px;
    color: var(--color-muted);
    cursor: pointer;
    font: inherit;
    font-size: 14px;
    font-weight: 700;
    min-height: 34px;
    padding: 0 14px;
    white-space: nowrap;
}

.view-switcher__button:hover {
    color: var(--color-text);
}

.view-switcher__button:focus-visible,
.theme-picker select:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--color-primary) 32%, transparent);
    outline-offset: 2px;
}

.view-switcher__button[aria-pressed="true"] {
    background: var(--color-primary);
    box-shadow: var(--shadow-md);
    color: var(--color-primary-active);
}

.header-actions {
    align-items: center;
    display: inline-flex;
    gap: 14px;
    justify-self: end;
}

.about-button {
    align-items: center;
    appearance: none;
    background: var(--color-surface-alt);
    border: 1px solid var(--color-border-strong);
    border-radius: 6px;
    color: var(--color-text);
    cursor: pointer;
    display: inline-flex;
    font: inherit;
    font-size: 12px;
    font-weight: 700;
    gap: 5px;
    min-height: 32px;
    padding: 0 12px;
    white-space: nowrap;
}

.about-button:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.about-button:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--color-primary) 32%, transparent);
    outline-offset: 2px;
}

.theme-picker {
    align-items: center;
    color: var(--color-muted);
    display: inline-flex;
    font-size: 12px;
    font-weight: 700;
    gap: 8px;
}

.about-dialog {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    color: var(--color-text);
    max-width: 640px;
    padding: 0;
    width: calc(100% - 32px);
}

.about-dialog::backdrop {
    background: rgba(9, 18, 29, 0.55);
}

.about-dialog__chrome {
    display: flex;
    justify-content: flex-end;
    margin: 0;
    padding: 8px 8px 0;
    position: sticky;
    top: 0;
}

.about-dialog__close {
    appearance: none;
    background: transparent;
    border: 0;
    border-radius: 6px;
    color: var(--color-muted);
    cursor: pointer;
    font-size: 26px;
    line-height: 1;
    padding: 4px 10px;
}

.about-dialog__close:hover {
    color: var(--color-text);
}

.about-dialog__close:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--color-primary) 32%, transparent);
    outline-offset: 2px;
}

.about-dialog__body {
    padding: 0 28px 28px;
}

.about-dialog__body h2 {
    color: var(--color-primary);
    font-size: 22px;
    margin: 0 0 12px;
}

.about-dialog__body h3 {
    font-size: 16px;
    margin: 22px 0 6px;
}

.about-dialog__body p,
.about-dialog__body li {
    color: var(--color-text);
    font-size: 14.5px;
    line-height: 1.6;
}

.about-dialog__lede {
    color: var(--color-muted);
}

.about-dialog__body ul {
    margin: 8px 0 0;
    padding-left: 20px;
}

.about-dialog__body li {
    margin: 6px 0;
}

.about-dialog__footer {
    border-top: 1px solid var(--color-border);
    color: var(--color-muted) !important;
    font-size: 13px !important;
    margin-top: 22px;
    padding-top: 16px;
}

.theme-picker select {
    background-color: var(--color-surface-alt);
    border: 1px solid var(--color-border-strong);
    border-radius: 6px;
    color: var(--color-text);
    font: inherit;
    font-size: 12px;
    height: 32px;
    min-width: 92px;
    padding: 0 8px;
}

.discover-main {
    min-height: 0;
}

.discover-view {
    background: var(--color-surface);
    height: calc(100vh - 57px);
    min-height: 0;
    width: 100%;
}

.discover-view[hidden] {
    display: none;
}

.discover-view iframe {
    background: var(--color-surface);
    border: 0;
    display: block;
    height: 100%;
    width: 100%;
}

@media (max-width: 860px) {
    .discover-header {
        align-items: stretch;
        gap: 10px;
        grid-template-columns: 1fr;
        min-height: 138px;
    }

    .view-switcher,
    .header-actions {
        justify-self: stretch;
    }

    .header-actions {
        justify-content: space-between;
    }

    .view-switcher__button {
        flex: 1 1 0;
    }

    .theme-picker select {
        flex: 1 1 auto;
    }

    .discover-view {
        height: calc(100vh - 139px);
    }
}