:root {
    --background: 0 0% 100%;
    --foreground: 240 10% 3.9%;
    --card: 0 0% 100%;
    --card-foreground: 240 10% 3.9%;
    --border: 240 5.9% 90%;
    --primary: 240 5.9% 10%;
    --primary-foreground: 0 0% 98%;
    --muted: 240 4.8% 95.9%;
    --muted-foreground: 240 3.8% 46.1%;
    --ring: 240 10% 3.9%;
}

@media (prefers-color-scheme: dark) {
    :root {
        --background: 240 10% 3.9%;
        --foreground: 0 0% 98%;
        --card: 240 10% 3.9%;
        --card-foreground: 0 0% 98%;
        --border: 240 3.7% 15.9%;
        --primary: 0 0% 98%;
        --primary-foreground: 240 5.9% 10%;
        --muted: 240 3.7% 15.9%;
        --muted-foreground: 240 5% 64.9%;
        --ring: 240 4.9% 83.9%;
    }
}

* {
    box-sizing: border-box;
}

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

body {
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: hsl(var(--background));
    color: hsl(var(--foreground));
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.layout-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100%;
    width: 100%;
}

.header {
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: 1px solid hsl(var(--border));
    background-color: hsla(var(--background), 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 12px 16px;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    max-width: 800px;
    margin: 0 auto;
}

.header-title {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.015em;
    margin: 0;
}

.header-logo {
    width: 22px;
    height: 22px;
}

@media (prefers-color-scheme: dark) {
    .header-logo {
        filter: invert(1);
    }
}

.badge {

    display: inline-flex;
    align-items: center;
    border-radius: 9999px;
    border: 1px solid hsl(var(--border));
    background-color: hsl(var(--muted));
    padding: 2px 8px;
    font-size: 0.75rem;
    color: hsl(var(--muted-foreground));
}

.main-content {
    flex: 1;
    padding: 16px;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
    overflow: auto;
}

.grid-gap {
    display: grid;
    gap: 16px;
}

.card {
    border-radius: 0.75rem;
    border: 1px solid hsl(var(--border));
    background-color: hsl(var(--card));
    color: hsl(var(--card-foreground));
    padding: 16px;
}

.shadow-sm {
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.card-title {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    font-weight: 500;
}

.card-body {

    margin-top: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 2.25rem;
    padding: 0 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    transition: background-color 0.15s, color 0.15s, transform 0.1s;
    cursor: pointer;
    text-decoration: none;
    border: none;
    user-select: none;
}

.w-full {
    width: 100%;
}

.btn:active {
    transform: scale(0.98);
}

.btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 2px hsl(var(--background)), 0 0 0 4px hsl(var(--ring));
}

.btn.primary {
    background-color: hsl(var(--primary));
    color: hsl(var(--primary-foreground));
}

.btn.primary:hover {
    opacity: 0.9;
}

.btn.outline {
    background-color: transparent;
    border: 1px solid hsl(var(--input, var(--border)));
    color: hsl(var(--foreground));
}

.btn.outline:hover {
    background-color: hsl(var(--muted));
    color: hsl(var(--foreground));
}

.info-grid {
    display: grid;
    gap: 16px;
}

@media (min-width: 480px) {
    .info-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px;
    border-radius: 0.5rem;
    background-color: hsl(var(--background));
    border: 1px solid hsl(var(--border));
}

.info-label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.875rem;
    color: hsl(var(--muted-foreground));
}

.info-value {

    font-size: 1.125rem;
    font-weight: 600;
}

.text-muted {
    color: hsl(var(--muted-foreground));
}

ul.changelog-list {
    margin: 0;
    padding-left: 20px;
    font-size: 0.875rem;
    line-height: 1.8;
}

.changelog-list li {
    margin-bottom: 6px;
}

.notice-content {
    font-size: 0.875rem;
    line-height: 1.6;
}

.notice-content p {
    margin: 0 0 8px 0;
}

.notice-content p:last-child {
    margin: 0;
}

.status-hint {
    margin-top: 12px;
    font-size: 0.75rem;
    text-align: center;
}