.md-nav__link--active {
    color: #ff0000 !important;
    font-weight: bold;
}

.md-sidebar--primary .md-nav__link:hover {
    color: #ff0000 !important;
}

.md-tabs__link--active {
    color: #ff0000 !important;
    font-weight: bold;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.problem-card {
    border: 1px solid var(--md-default-fg-color);
    border-radius: 8px;
    background-color: var(--md-default-bg-color);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: box-shadow 0.2s ease;
    padding-left: 5%;
    padding-bottom: 20px;
}

.problem-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.problem-card .header {
    display: flex;
    justify-content: space-between;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.problem-card .tags-spoiler summary {
    cursor: pointer;
    font-weight: bold;
    list-style: none;
}

.problem-card .tags {
    margin-top: 0.3rem;
    font-size: 0.9rem;
    color: var(--md-secondary-fg-color);
}

.problem-card .view-solution a {
    text-decoration: none;
    color: var(--md-accent-fg-color);
    font-weight: bold;
    margin-top: auto;
}

/* Hide all top header and navbar elements on the Problems page */
body.md-page-problems-index .md-header,
body.md-page-problems-index .md-top,
body.md-page-problems-index .md-header-nav {
    display: none !important;
}

/* Hide sidebar / drawer */
body.md-page-problems-index .md-sidebar,
body.md-page-problems-index .md-drawer {
    display: none !important;
}

/* Hide footer */
body.md-page-problems-index .md-footer {
    display: none !important;
}

/* Remove main padding to move content up */
body.md-page-problems-index .md-main {
    padding-top: 0 !important;
}

/* Remove layout gap reserved for sidebar */
body.md-page-problems-index .md-main__inner {
    margin-left: 0 !important;
    max-width: 100% !important;
}

.tag {
    color: rgb(148, 148, 148);
}

.tag input:checked + span {
    color: black;
}

.submit {
    padding: 5px 10px;
    cursor: pointer;
    color: black;
    border-style: solid;
    border-color: black;
    border-width: 1px;
    border-radius: 7px;
    width: 65px;
    height: 30px;
    font-size: 17px;
    background-color: white;
    transition-duration: 200ms;
    display: flex;
    justify-content: center;
    align-items: center;
}
.submit:hover {
    transition-duration: 200ms;
    background-color: rgb(230, 230, 230);
}

.tagbox {
    border: 1px solid #ccc;
    padding: 10px;
    margin-bottom: 20px;
    background: #ffffff;
    border-radius: 7px;
}

.tag-toggle {
    background-color: white;
    border: 1px solid black;
    border-radius: 7px;
    cursor: pointer;
    padding: 5px 15px;
    font-size: 16px;
    transition-duration: 200ms;
    color: black;
}

.bitmask_dp {
    width: 400px;
    margin-top: 15px;
    margin-bottom: 15px;
}

.bitmask-container {
    display: flex;
    justify-content: center;
}


.pdfshow {
    border: 2px solid #ccc;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    width: 100%;
    height: 700px;
}

.problem-card-other {
    border: 1px solid var(--md-default-fg-color);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: box-shadow 0.2s ease;
    padding-left: 5%;
    padding-bottom: 20px;
    background-color: white;
    color: rgb(37, 37, 37);
    margin-bottom: 10px;
}

.problem-card-other:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.problem-card-other .header {
    display: flex;
    justify-content: space-between;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.problem-card-other .tags-spoiler summary {
    cursor: pointer;
    font-weight: bold;
    list-style: none;
}

.problem-card-other .tags {
    margin-top: 0.3rem;
    font-size: 0.9rem;
    color: var(--md-secondary-fg-color);
}

.problem-card-other .view-solution a {
    text-decoration: none;
    color: var(--md-accent-fg-color);
    font-weight: bold;
    margin-top: auto;
}

/* Dark mode: soften pure white colors to a dimmer white for less glare */
@media (prefers-color-scheme: dark) {
    /* Use a slightly dimmer white and increase transparency for backgrounds */
    .submit {
        background-color: rgba(230,230,230,0.12); /* softer on dark bg */
        color: #e6e6e6;
        border-color: rgba(230,230,230,0.18);
    }
    .submit:hover {
        background-color: rgba(230,230,230,0.16);
    }

    .tagbox {
        background: rgba(255,255,255,0.03);
        border-color: rgba(255,255,255,0.06);
        color: #e6e6e6;
    }
    .tagbox * {
        color: #e6e6e6;
    }

    .tag-toggle {
        background-color: rgba(255,255,255,0.04);
        color: #e6e6e6;
        border-color: rgba(230,230,230,0.12);
    }

    .problem-card, .problem-card-other {
        background-color: rgba(255,255,255,0.03);
        color: #e6e6e6;
        border-color: rgba(255,255,255,0.06);
        box-shadow: 0 4px 12px rgba(0,0,0,0.6);
    }

    /* Generic fixes for any remaining white backgrounds inside docs */
    .md-typeset, .md-content, .md-main, .md-main__inner {
        background-color: transparent;
    }
    /* Reduce bright primary white usage in links/headers */
    .md-nav__link--active, .md-tabs__link--active, .md-header, .md-footer {
        color: #e6e6e6 !important;
    }
}

/* More specific: Material theme sets `data-md-color-scheme="slate"` on <body> for dark palette.
   Use attribute selectors to ensure overrides apply when the site is in the dark palette. */
body[data-md-color-scheme="slate"] .submit {
    background-color: rgba(230,230,230,0.12) !important;
    color: #e6e6e6 !important;
    border-color: rgba(230,230,230,0.18) !important;
}
body[data-md-color-scheme="slate"] .submit:hover {
    background-color: rgba(230,230,230,0.16) !important;
}
body[data-md-color-scheme="slate"] .tagbox {
    background: rgba(255,255,255,0.03) !important;
    border-color: rgba(255,255,255,0.06) !important;
    color: #e6e6e6 !important;
}
body[data-md-color-scheme="slate"] .tagbox * {
    color: #e6e6e6 !important;
}
body[data-md-color-scheme="slate"] .tag-toggle {
    background-color: rgba(255,255,255,0.04) !important;
    color: #e6e6e6 !important;
    border-color: rgba(230,230,230,0.12) !important;
}
body[data-md-color-scheme="slate"] .problem-card,
body[data-md-color-scheme="slate"] .problem-card-other {
    background-color: rgba(255,255,255,0.03) !important;
    color: #e6e6e6 !important;
    border-color: rgba(255,255,255,0.06) !important;
    box-shadow: 0 4px 12px rgba(0,0,0,0.6) !important;
}

/* Force text to white-ish in dark (slate) scheme to undo any accidental darkening */
body[data-md-color-scheme="slate"] .md-typeset,
body[data-md-color-scheme="slate"] .md-content,
body[data-md-color-scheme="slate"] .md-main,
body[data-md-color-scheme="slate"] .md-main__inner,
body[data-md-color-scheme="slate"] .md-header__title,
body[data-md-color-scheme="slate"] .md-header__topic,
body[data-md-color-scheme="slate"] .md-header__ellipsis,
body[data-md-color-scheme="slate"] .md-header .md-logo,
body[data-md-color-scheme="slate"] .md-header .md-header__button,
body[data-md-color-scheme="slate"] .md-nav__link,
body[data-md-color-scheme="slate"] .md-tabs__link,
body[data-md-color-scheme="slate"] .tagbox,
body[data-md-color-scheme="slate"] .tagbox *,
body[data-md-color-scheme="slate"] .submit,
body[data-md-color-scheme="slate"] .tag-toggle,
body[data-md-color-scheme="slate"] .problem-card,
body[data-md-color-scheme="slate"] .problem-card-other {
    color: #ffffff !important;
}

/* Make header / nav text pure white in slate to ensure visibility */
body[data-md-color-scheme="slate"] .md-header__title,
body[data-md-color-scheme="slate"] .md-header__topic,
body[data-md-color-scheme="slate"] .md-header__ellipsis,
body[data-md-color-scheme="slate"] .md-nav__link,
body[data-md-color-scheme="slate"] .md-tabs__link {
    color: #ffffff !important;
}

/* Also make sure any inline styles (from pages) don't force bright white when dark scheme is active */
body[data-md-color-scheme="slate"] [style*="background:#fff"],
body[data-md-color-scheme="slate"] [style*="background:#ffffff"],
body[data-md-color-scheme="slate"] [style*="background: #fff"],
body[data-md-color-scheme="slate"] [style*="background: #ffffff"] {
    background-color: transparent !important;
}

/* Light mode: make normal text a little darker (near-black) but not pure black */
@media (prefers-color-scheme: light) {
    .tagbox,
    .tagbox * {
        color: #111214; /* slightly greyed black for text */
    }

    .md-typeset,
    .md-content,
    .md-main,
    .md-main__inner,
    .problem-card,
    .problem-card-other {
        color: #111214;
    }

    .submit,
    .tag-toggle {
        color: #111214;
        border-color: rgba(0,0,0,0.65);
    }
}

/* Also target the Material theme default palette attribute to ensure the change applies
   when the site sets the default scheme via JS (body[data-md-color-scheme="default"]) */
body[data-md-color-scheme="default"] .tagbox,
body[data-md-color-scheme="default"] .tagbox * {
    color: #111214 !important;
}
body[data-md-color-scheme="default"] .md-typeset,
body[data-md-color-scheme="default"] .md-content,
body[data-md-color-scheme="default"] .md-main,
body[data-md-color-scheme="default"] .md-main__inner,
body[data-md-color-scheme="default"] .problem-card,
body[data-md-color-scheme="default"] .problem-card-other {
    color: #111214 !important;
}
body[data-md-color-scheme="default"] .submit,
body[data-md-color-scheme="default"] .tag-toggle {
    color: #111214 !important;
    border-color: rgba(0,0,0,0.65) !important;
}

/* Make header and navigation text a little darker in light mode */
@media (prefers-color-scheme: light) {
    .md-header__title,
    .md-header__topic,
    .md-header__ellipsis,
    .md-header .md-logo,
    .md-header .md-header__button,
    .md-nav__link,
    .md-tabs__link {
        color: #0f1112 !important; /* slightly stronger black for header/nav */
    }
}

body[data-md-color-scheme="default"] .md-header__title,
body[data-md-color-scheme="default"] .md-header__topic,
body[data-md-color-scheme="default"] .md-header__ellipsis,
body[data-md-color-scheme="default"] .md-header .md-logo,
body[data-md-color-scheme="default"] .md-header .md-header__button,
body[data-md-color-scheme="default"] .md-nav__link,
body[data-md-color-scheme="default"] .md-tabs__link {
    color: #0f1112 !important;
}

/* Home page centering */
.home-center {
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    padding: 2rem 1rem;
}

.homelogo {
    display: block;
    margin: 0.5rem auto 1rem auto;
    max-width: 160px;
    height: auto;
}

/* Center homepage title, logo and intro text without editing markdown */
body.md-page-index .md-typeset,
body.md-page-index .md-main__inner {
    text-align: center !important;
}

/* Ensure logo is centered on the homepage */
body.md-page-index .homelogo {
    display: block !important;
    margin-left: auto !important;
    margin-right: auto !important;
}

/* Make sure the H1 on the homepage is centered and not stretched */
body.md-page-index .md-typeset h1 {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

/* Extra strong rule to ensure the homepage H1 is centered in all variants */
body.md-page-index h1,
.md-page-index h1,
body.md-page-index .md-typeset > h1,
.md-page-index .md-typeset > h1 {
    text-align: center !important;
    margin-left: auto !important;
    margin-right: auto !important;
}

.homelogo {
    width: 250px;
    border-radius: 7px;
    border-style: solid;
    border-color: black;
    transition-duration: 400ms;
}

.homelogo:hover {
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    transition-duration: 400ms;
}

body.slate .homelogo:hover {
    box-shadow: 0 8px 16px rgb(255, 255, 255);
    transition-duration: 400ms;
}