/* Navbar: responsive logo */
.md-header__button.md-logo img { height: 32px; }
@media (max-width: 960px) { .md-header__button.md-logo img { height: 24px; } }
@media (max-width: 768px) { .md-header__button.md-logo img { height: 20px; } }
[data-md-color-scheme="slate"] .md-header__button.md-logo img {
    background-color: #fff; border-radius: 4px; padding: 2px 5px;
}

/* Announce bar */
.md-announce a { color: inherit; text-decoration: underline; }

/* Image */
.image-center { display: block; margin: 0 auto; }

/* Card grid */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card-grid + .card-grid { margin-top: 1.5rem; }
@media (max-width: 768px) { .card-grid { grid-template-columns: 1fr; } }

/* Card: light mode */
.md-typeset .card {
    display: flex; flex-direction: column; align-items: center;
    padding: 1.2rem 1.3rem; border-radius: 10px;
    border: 1px solid rgba(0,0,0,0.18); border-top: 4px solid transparent;
    background-color: #f4f4f5; box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    text-decoration: none; color: var(--md-typeset-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}
/* Card: dark mode */
[data-md-color-scheme="slate"] .md-typeset .card {
    background-color: rgba(255,255,255,0.07);
    border-color: rgba(255,255,255,0.15); box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
/* Hover: light */
.md-typeset .card:hover {
    transform: translateY(-4px); background-color: #ececed;
    box-shadow: 0 8px 22px rgba(0,0,0,0.14); text-decoration: none;
    color: var(--md-typeset-color);
}
/* Hover: dark */
[data-md-color-scheme="slate"] .md-typeset .card:hover {
    background-color: rgba(255,255,255,0.11); box-shadow: 0 8px 22px rgba(0,0,0,0.45);
}
.md-typeset .card--access:hover { border-color: #c0392b; }
.md-typeset .card--doc:hover    { border-color: #1565c0; }

.md-typeset .card .card__logo {
    height: 36px; width: auto; max-height: 36px; max-width: 120px;
    object-fit: contain; margin-top: 0.75rem; flex-shrink: 0;
}
[data-md-color-scheme="slate"] .card__logo--white-bg {
    background-color: #fff; border-radius: 4px; padding: 3px 6px;
}
.card__title { font-weight: 700; font-size: 1rem; text-align: center; }
.card__desc  { font-size: 0.85rem; opacity: 0.75; margin-top: 0.3rem; text-align: center; }

/* Access cards */
.card--access { border-top-color: #c0392b; }
.card--access .card__title { color: #c0392b; }

/* Doc cards */
.card--doc { border-top-color: #1565c0; }
.card--doc .card__title { color: #1565c0; }

/* Mermaid zoom button */
.mermaid-zoom-btn {
    display: inline-flex; align-items: center; gap: 0.4rem;
    margin-bottom: 0.5rem; padding: 0.4rem 0.9rem;
    font-size: 0.85rem; font-weight: 500;
    color: #1565c0; background: #e3f2fd; border: 1px solid #90caf9;
    border-radius: 6px; cursor: pointer; transition: background 0.2s, border-color 0.2s;
}
.mermaid-zoom-btn:hover { background: #bbdefb; border-color: #64b5f6; }
[data-md-color-scheme="slate"] .mermaid-zoom-btn {
    color: #90caf9; background: rgba(144,202,249,0.12); border-color: rgba(144,202,249,0.3);
}
[data-md-color-scheme="slate"] .mermaid-zoom-btn:hover {
    background: rgba(144,202,249,0.22); border-color: rgba(144,202,249,0.5);
}

/* Mermaid fullscreen overlay */
.mermaid-overlay {
    display: none; position: fixed; inset: 0; z-index: 99999;
    background: rgba(0,0,0,0.85); cursor: pointer;
    justify-content: center; align-items: flex-start; padding: 2rem;
}
.mermaid-overlay-inner {
    background: #fff; border-radius: 8px; padding: 1.5rem;
    width: 95vw; height: 90vh; overflow: auto; cursor: default;
}
.mermaid--fullscreen {
    min-width: 100%;
    transform-origin: top left; transition: transform 0.15s ease;
}
[data-md-color-scheme="slate"] .mermaid-overlay-inner {
    background: #2e2e2e;
}