/*
 * Programme catalogue (/courses).
 *
 * Everything is namespaced under .cat so it cannot leak into the rest of the
 * theme. Colours are Smart College navy and blue: the page sits inside an
 * existing site, so it borrows the brand rather than introducing one.
 */

.cat {
    --cat-navy: #0F2942;
    --cat-navy-soft: #16355A;
    --cat-blue: #3139C8;
    --cat-blue-deep: #232B9E;
    --cat-ink: #16202B;
    --cat-muted: #5B6B7C;
    --cat-line: #E4E9EF;
    --cat-tint: #F5F7FB;
    --cat-ease: cubic-bezier(.22, .61, .36, 1);
    --cat-shadow: 0 14px 34px -18px rgba(15, 41, 66, .45);
}

/* ---------------------------------------------------------------- hero --- */

.cat-hero {
    background:
        radial-gradient(120% 140% at 85% 0%, rgba(49, 57, 200, .38) 0%, transparent 60%),
        linear-gradient(135deg, var(--cat-navy) 0%, var(--cat-navy-soft) 100%);
    color: #fff;
}

.cat-hero-title {
    font-size: clamp(1.9rem, 1.2rem + 2.6vw, 3.1rem);
    line-height: 1.18;
    letter-spacing: -.015em;
}

.cat-hero-lead {
    max-width: 62ch;
    color: rgba(255, 255, 255, .78);
    line-height: 1.75;
}

.cat-stats { display: flex; flex-wrap: wrap; gap: .75rem; }

.cat-stat {
    flex: 1 1 150px;
    padding: 1rem 1.15rem;
    border-radius: 16px;
    background: rgba(255, 255, 255, .07);
    border: 1px solid rgba(255, 255, 255, .16);
}

.cat-stat-figure {
    font-size: 1.9rem;
    font-weight: 800;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.cat-stat-label { font-size: .8rem; color: rgba(255, 255, 255, .72); margin-top: .35rem; }

/* --------------------------------------------------------- level tiles --- */

.cat-tiles {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: .85rem;
}

.cat-tile {
    display: flex;
    flex-direction: column;
    gap: .55rem;
    min-height: 132px;
    padding: 1.1rem 1rem;
    border: 1px solid var(--cat-line);
    border-radius: 18px;
    background: #fff;
    color: var(--cat-ink);
    text-align: start;
    cursor: pointer;
    transition: transform .22s var(--cat-ease), box-shadow .22s var(--cat-ease),
                background .22s var(--cat-ease), border-color .22s var(--cat-ease);
}

.cat-tile:hover { transform: translateY(-4px); box-shadow: var(--cat-shadow); border-color: rgba(49, 57, 200, .4); }
.cat-tile:active { transform: translateY(-1px); }

.cat-tile[aria-pressed="true"] {
    background: linear-gradient(150deg, var(--cat-navy) 0%, var(--cat-navy-soft) 100%);
    border-color: var(--cat-navy);
    color: #fff;
}

.cat-tile-icon { width: 26px; height: 26px; stroke: currentColor; fill: none; stroke-width: 1.7; opacity: .85; }
.cat-tile-name { font-size: .95rem; font-weight: 700; line-height: 1.35; }
.cat-tile-count { margin-top: auto; font-size: .78rem; opacity: .7; font-variant-numeric: tabular-nums; }

/* --------------------------------------------------- partner universities --- */

.cat-partners {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1rem;
}

.cat-partner {
    display: flex;
    align-items: center;
    gap: .85rem;
    padding: 1rem;
    border: 1px solid var(--cat-line);
    border-radius: 16px;
    background: #fff;
    text-decoration: none;
    transition: transform .22s var(--cat-ease), box-shadow .22s var(--cat-ease), border-color .22s var(--cat-ease);
}

.cat-partner:hover { transform: translateY(-3px); box-shadow: var(--cat-shadow); border-color: rgba(49, 57, 200, .4); }
.cat-partner-name { font-size: .88rem; font-weight: 700; color: var(--cat-ink); line-height: 1.4; }
.cat-partner-count { font-size: .76rem; color: var(--cat-muted); font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------------- controls --- */

.cat-controls {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, .94);
    backdrop-filter: blur(12px);
    border-block: 1px solid var(--cat-line);
}

.cat-search {
    width: 100%;
    min-height: 44px;
    padding: .6rem 1rem;
    border: 1px solid var(--cat-line);
    border-radius: 12px;
    font-size: .9rem;
    background: #fff;
    transition: border-color .2s var(--cat-ease), box-shadow .2s var(--cat-ease);
}

.cat-search:focus {
    border-color: var(--cat-blue);
    box-shadow: 0 0 0 4px rgba(49, 57, 200, .12);
    outline: none;
}

.cat-reset {
    min-height: 44px;
    padding: .5rem 1.1rem;
    border: 1px solid var(--cat-line);
    border-radius: 999px;
    background: #fff;
    color: var(--cat-ink);
    font-size: .85rem;
    font-weight: 600;
    cursor: pointer;
    transition: border-color .2s var(--cat-ease), color .2s var(--cat-ease);
}

.cat-reset:hover { border-color: var(--cat-blue); color: var(--cat-blue); }
.cat-reset[hidden] { display: none; }

.cat-tile:focus-visible,
.cat-partner:focus-visible,
.cat-search:focus-visible,
.cat-reset:focus-visible,
.cat-card:focus-visible {
    outline: 3px solid var(--cat-blue);
    outline-offset: 2px;
}

/* --------------------------------------------------------- body section --- */

.cat-body { scroll-margin-top: 96px; }

.cat-body-head {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    padding: 1.15rem 1.25rem;
    border: 1px solid var(--cat-line);
    border-radius: 18px;
    background: linear-gradient(180deg, #fff 0%, var(--cat-tint) 100%);
}

.cat-mark {
    width: 60px;
    height: 60px;
    flex: 0 0 60px;
    border-radius: 14px;
    overflow: hidden;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--cat-blue) 0%, var(--cat-blue-deep) 100%);
    color: #fff;
    font-weight: 800;
    font-size: 1.15rem;
    letter-spacing: .02em;
}

.cat-mark--sm { width: 46px; height: 46px; flex-basis: 46px; border-radius: 12px; font-size: .95rem; }
.cat-mark img { width: 100%; height: 100%; object-fit: contain; background: #fff; padding: 6px; }

.cat-body-name {
    font-size: clamp(1.15rem, 1rem + .5vw, 1.5rem);
    font-weight: 800;
    color: var(--cat-ink);
    margin: 0;
}

.cat-pill {
    display: inline-block;
    padding: .25rem .7rem;
    border-radius: 999px;
    background: rgba(49, 57, 200, .1);
    color: var(--cat-blue-deep);
    font-size: .78rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.cat-level-title {
    display: flex;
    align-items: center;
    gap: .6rem;
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: .09em;
    text-transform: uppercase;
    color: var(--cat-muted);
    margin: 1.75rem 0 .9rem;
}

.cat-level-title::after { content: ""; flex: 1; height: 1px; background: var(--cat-line); }

/* ----------------------------------------------------- programme card --- */

.cat-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    border: 1px solid var(--cat-line);
    border-radius: 16px;
    background: #fff;
    text-decoration: none;
    overflow: hidden;
    transition: transform .22s var(--cat-ease), box-shadow .22s var(--cat-ease), border-color .22s var(--cat-ease);
}

.cat-card:hover { transform: translateY(-4px); border-color: rgba(49, 57, 200, .45); box-shadow: var(--cat-shadow); }
.cat-card:active { transform: translateY(-1px) scale(.995); }

/* Only 59 of 125 programmes have a photo, so the fallback has to look
   deliberate rather than like a missing image. */
.cat-media {
    position: relative;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--cat-navy) 0%, var(--cat-blue-deep) 100%);
    display: grid;
    place-items: center;
    overflow: hidden;
}

.cat-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s var(--cat-ease);
}

.cat-card:hover .cat-media img { transform: scale(1.04); }

.cat-media-mark {
    color: rgba(255, 255, 255, .9);
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: .06em;
}

.cat-tag {
    position: absolute;
    inset-block-start: .6rem;
    inset-inline-start: .6rem;
    padding: .22rem .6rem;
    border-radius: 6px;
    background: rgba(255, 255, 255, .94);
    color: var(--cat-navy);
    font-size: .7rem;
    font-weight: 800;
    letter-spacing: .04em;
}

.cat-card-body { display: flex; flex-direction: column; gap: .45rem; flex: 1; padding: 1rem 1.05rem; }
.cat-card-name { font-size: .95rem; font-weight: 700; color: var(--cat-ink); line-height: 1.45; }
.cat-card-meta { font-size: .8rem; color: var(--cat-muted); }

.cat-card-more {
    margin-top: auto;
    padding-top: .6rem;
    font-size: .8rem;
    font-weight: 700;
    color: var(--cat-blue);
}

/* --------------------------------------------------------------- misc --- */

.cat-empty { display: none; padding: 3.5rem 1rem; text-align: center; color: var(--cat-muted); }
.cat-empty.is-shown { display: block; }

/* Entrance uses transform and opacity only, so nothing reflows. */
.cat-reveal { opacity: 0; transform: translateY(14px); }

.cat-reveal.is-in {
    opacity: 1;
    transform: none;
    transition: opacity .38s var(--cat-ease), transform .38s var(--cat-ease);
}

@media (prefers-reduced-motion: reduce) {
    .cat-reveal,
    .cat-reveal.is-in { opacity: 1; transform: none; transition: none; }

    .cat-card,
    .cat-tile,
    .cat-partner,
    .cat-media img { transition: none; }

    .cat-card:hover,
    .cat-tile:hover,
    .cat-partner:hover { transform: none; }

    .cat-card:hover .cat-media img { transform: none; }
}