:root {
    --color-background: #f5f7fb;
    --color-surface: #ffffff;
    --color-surface-alt: #eef2ff;
    --color-border: rgba(30, 64, 175, 0.12);
    --color-text: #1f2937;
    --color-text-muted: #4b5563;
    --color-link: #2563eb;
    --color-link-hover: #1d4ed8;
    --color-accent: #4f46e5;
    --shadow-soft: 0 10px 30px rgba(15, 23, 42, 0.08);
}

*[hidden] {
    display: none !important;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--color-background);
    color: var(--color-text);
    line-height: 1.6;
}

a {
    color: var(--color-link);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover,
a:focus {
    color: var(--color-link-hover);
}

.site-header {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1.5rem 2rem;
    background: var(--color-surface);
    box-shadow: var(--shadow-soft);
    border-bottom: 1px solid var(--color-border);
}

.brand {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.brand__name {
    font-weight: 700;
    font-size: 1.35rem;
    color: var(--color-text);
}

.brand__tagline {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.nav-main {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.85rem;
    border-radius: 999px;
    background: transparent;
    color: var(--color-text-muted);
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.nav-link:hover,
.nav-link:focus,
.nav-item[open] > .nav-link {
    background: var(--color-surface-alt);
    color: var(--color-text);
    transform: translateY(-1px);
}

.nav-item {
    position: relative;
}

.nav-item > summary {
    list-style: none;
    cursor: pointer;
}

.nav-item > summary::-webkit-details-marker {
    display: none;
}

.dropdown-panel {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    z-index: 10;
    min-width: 16rem;
    padding: 1rem 1.25rem;
    border-radius: 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
    display: none;
}

.nav-item[open] .dropdown-panel {
    display: grid;
    gap: 1rem;
}

.resources-panel {
    width: min(70vw, 48rem);
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.nav-resources .dropdown-panel {
    left: auto;
    right: 0;
    width: min(90vw, 48rem);
    overflow-x: auto;
}

.resource-group h3 {
    margin: 0 0 0.5rem 0;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
}

.link-list,
.tag-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.link-list li {
    width: 100%;
}

.link-list a {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.4rem 0.5rem;
    border-radius: 0.6rem;
    background: rgba(79, 70, 229, 0.05);
    transition: background 0.2s ease, transform 0.2s ease;
}

.link-list a:hover,
.link-list a:focus {
    background: rgba(37, 99, 235, 0.1);
    transform: translateX(2px);
}

.tag-list li {
    margin: 0;
}

.tag-list a {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-link);
    font-size: 0.85rem;
    font-weight: 600;
}

.tag-list a:hover,
.tag-list a:focus {
    background: rgba(37, 99, 235, 0.2);
}

.auth-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-height: 3rem;
}

.auth-form,
.auth-block {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}

.auth-form input[type="text"],
.auth-form input[type="password"] {
    padding: 0.45rem 0.65rem;
    border-radius: 0.6rem;
    border: 1px solid var(--color-border);
    background: var(--color-background);
    min-width: 8.5rem;
}

.auth-form button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.45rem 0.95rem;
    border-radius: 0.6rem;
    border: none;
    background: var(--color-accent);
    color: #ffffff;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, box-shadow 0.2s ease;
}

.auth-form button:hover,
.auth-form button:focus {
    background: #4338ca;
    box-shadow: 0 8px 18px rgba(79, 70, 229, 0.3);
}

.auth-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 0.25rem 0.6rem;
    border-radius: 0.5rem;
    border: none;
    background: transparent;
    color: var(--color-text);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    text-decoration: none;
    transition: color 0.2s ease, background 0.2s ease;
}

.auth-button:hover,
.auth-button:focus {
    color: var(--color-link);
    background: rgba(79, 70, 229, 0.08);
    outline: none;
}

.auth-button:focus-visible {
    outline: 2px solid var(--color-link);
    outline-offset: 2px;
}

.auth-button .material-icons {
    font-size: 1.25rem;
    line-height: 1;
}

.auth-button--icon {
    padding: 0.25rem;
}

.auth-identity {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.auth-hint {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

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

.page {
    padding: 2.5rem clamp(1.25rem, 5vw, 3.5rem);
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.hero {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    align-items: stretch;
    justify-content: space-between;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.08), rgba(37, 99, 235, 0.12));
    border-radius: 1.5rem;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
}

.hero__copy h1 {
    margin: 0 0 0.75rem 0;
    font-size: clamp(1.8rem, 3vw, 2.4rem);
}

.hero__copy p {
    margin: 0;
    max-width: 32rem;
    color: var(--color-text-muted);
}

.hero__tags {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.hero__tags h2 {
    margin: 0;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
}

.panel {
    background: var(--color-surface);
    border-radius: 1.5rem;
    border: 1px solid var(--color-border);
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.panel__header h2 {
    margin: 0 0 0.35rem 0;
    font-size: 1.4rem;
}

.panel__header p {
    margin: 0;
    color: var(--color-text-muted);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
}

.app-card {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.25rem;
    border-radius: 1rem;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.app-card:hover,
.app-card:focus {
    transform: translateY(-4px);
    box-shadow: 0 18px 30px rgba(15, 23, 42, 0.12);
    border-color: rgba(37, 99, 235, 0.25);
}

.app-card__name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
}

.app-card__description {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.app-card--workspace {
    background: rgba(37, 99, 235, 0.05);
}

.panel--uuid {
    gap: 1rem;
}

#uuid_section {
    display: none;
    visibility: collapse;
}

.uuid-form {
    display: grid;
    gap: 0.75rem;
    max-width: 24rem;
}

.uuid-form label {
    font-weight: 600;
    color: var(--color-text-muted);
}

.uuid-form input[type="text"] {
    padding: 0.6rem 0.75rem;
    border-radius: 0.75rem;
    border: 1px solid var(--color-border);
    background: var(--color-background);
}

.uuid-actions {
    display: flex;
    gap: 0.75rem;
}

.uuid-actions input[type="button"] {
    flex: 1;
    padding: 0.55rem 0.85rem;
    border-radius: 0.75rem;
    border: none;
    background: var(--color-link);
    color: #ffffff;
    cursor: pointer;
    transition: background 0.2s ease, box-shadow 0.2s ease;
}

.uuid-actions input[type="button"]:hover,
.uuid-actions input[type="button"]:focus {
    background: var(--color-link-hover);
    box-shadow: 0 12px 20px rgba(37, 99, 235, 0.28);
}

.panel__cta {
    align-self: flex-start;
    padding: 0.65rem 1.2rem;
    border-radius: 0.75rem;
    border: none;
    background: #10b981;
    color: #ffffff;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.panel__cta:hover,
.panel__cta:focus {
    background: #059669;
    box-shadow: 0 12px 22px rgba(16, 185, 129, 0.25);
    transform: translateY(-2px);
}

.site-footer {
    padding: 1.5rem 2rem 2.5rem;
    background: transparent;
}

.devinfo {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.mono {
    font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

span.infotag {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

@media (max-width: 720px) {
    .site-header {
        padding: 1.25rem 1.5rem;
    }

    .site-nav {
        width: 100%;
    }

    .nav-item {
        position: static;
    }

    .dropdown-panel {
        position: static;
        width: 100%;
        margin-top: 0.75rem;
    }

    .resources-panel {
        width: 100%;
    }

    .hero {
        padding: 1.5rem;
    }

    .panel {
        padding: 1.5rem;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-background: #0f172a;
        --color-surface: #111827;
        --color-surface-alt: rgba(79, 70, 229, 0.22);
        --color-border: rgba(148, 163, 184, 0.2);
        --color-text: #e2e8f0;
        --color-text-muted: #94a3b8;
        --color-link: #93c5fd;
        --color-link-hover: #bfdbfe;
        --shadow-soft: 0 16px 30px rgba(15, 23, 42, 0.45);
    }

    body {
        background: radial-gradient(circle at top, rgba(79, 70, 229, 0.2), transparent 55%) var(--color-background);
    }

    .site-header {
        background: rgba(15, 23, 42, 0.75);
        backdrop-filter: blur(12px);
    }

    .link-list a {
        background: rgba(129, 140, 248, 0.12);
    }

    .link-list a:hover,
    .link-list a:focus {
        background: rgba(129, 140, 248, 0.22);
    }

    .tag-list a {
        background: rgba(96, 165, 250, 0.18);
        color: #bfdbfe;
    }

    .panel {
        background: rgba(15, 23, 42, 0.65);
    }

    .app-card {
        background: rgba(17, 24, 39, 0.85);
    }

    .app-card--workspace {
        background: rgba(59, 130, 246, 0.14);
    }

    .panel__cta {
        background: #34d399;
    }

    .panel__cta:hover,
    .panel__cta:focus {
        background: #22c55e;
    }
}