/* =============================================================================
   Directories — molecules and manufacturers
   -----------------------------------------------------------------------------
   One shell for both: hero, stat row, search, A–Z rail, filter chips, lettered
   groups of cards. Every entry is in the HTML from the start; the controls only
   hide rows, so the page is complete for a crawler with no script at all.
   ============================================================================= */

.igm-dir__head {
    margin: 0 0 26px;
    max-width: 780px;
}

.igm-dir__title {
    margin: 6px 0 12px;
    font: 700 clamp(26px, 4.4vw, 40px)/1.18 var(--font-display);
    letter-spacing: var(--ls-tight);
    color: var(--navy-700);
    text-wrap: pretty;
}

.igm-dir__intro {
    font: 15px/1.75 var(--font-body);
    color: var(--gray-700);
    text-wrap: pretty;
}

/* Stats ------------------------------------------------------------------- */

.igm-dir__stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 22px;
}

.igm-dir__stat {
    padding: 13px 15px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background: var(--white);
}

.igm-dir__stat-value {
    display: block;
    font: 700 22px/1.2 var(--font-display);
    color: var(--navy-700);
}

.igm-dir__stat-label {
    display: block;
    margin-top: 2px;
    font: 12.5px/1.4 var(--font-body);
    color: var(--gray-600);
}

/* Controls ---------------------------------------------------------------- */

.igm-dir__controls {
    position: sticky;
    top: 0;
    z-index: 3;
    padding: 12px 0;
    margin-bottom: 8px;
    background: var(--white);
    border-bottom: 1px solid var(--gray-300);
}

.igm-dir__search { display: block; }

.igm-dir__input {
    width: 100%;
    min-height: 46px;
    padding: 11px 15px;
    border: var(--border-3) solid var(--orange-500);
    border-radius: var(--radius-xl);
    background: var(--white);
    font: 15px/1.2 var(--font-body);
    color: var(--ink);
}

.igm-dir__input:focus-visible {
    outline: 0;
    box-shadow: var(--focus-ring);
}

.igm-dir__rail {
    display: flex;
    flex-wrap: nowrap;
    gap: 5px;
    margin-top: 11px;
    padding-bottom: 3px;
    overflow-x: auto;
}

@media (min-width: 820px) {
    .igm-dir__rail { flex-wrap: wrap; overflow-x: visible; }
}

/* 44px square: the design draws a smaller tile, but this is the primary
   navigation control on a phone and it has to clear the minimum hit area. */
.igm-dir__letter {
    flex: none;
    min-width: 44px;
    min-height: 44px;
    padding: 8px 6px;
    border: 0;
    border-radius: var(--radius-xs);
    background: var(--gray-50);
    font: 600 13.5px/1 var(--font-body);
    color: var(--navy-700);
    cursor: pointer;
    transition: var(--transition-fast);
}

.igm-dir__letter:hover { background: var(--brand-tint-08); }

.igm-dir__letter.is-active {
    background: var(--navy-700);
    color: var(--white);
}

/* A letter with nothing filed under it keeps the rail's shape but is not a
   control — it is a span, so it is never focusable or announced as a button. */
.igm-dir__letter.is-empty {
    background: transparent;
    color: var(--gray-450);
    cursor: default;
}

.igm-dir__chips {
    display: flex;
    flex-wrap: nowrap;
    gap: 7px;
    margin-top: 11px;
    padding-bottom: 3px;
    overflow-x: auto;
}

@media (min-width: 820px) {
    .igm-dir__chips { flex-wrap: wrap; overflow-x: visible; }
}

.igm-dir__chip {
    flex: none;
    min-height: 44px;
    padding: 12px 14px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-pill);
    background: var(--gray-50);
    font: 600 13px/1 var(--font-body);
    color: var(--navy-700);
    cursor: pointer;
    transition: var(--transition-fast);
}

.igm-dir__chip:hover { border-color: var(--navy-700); }

.igm-dir__chip.is-active {
    border-color: var(--navy-700);
    background: var(--navy-700);
    color: var(--white);
}

.igm-dir__result {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
    margin: 12px 0 0;
    font: 13.5px/1.5 var(--font-body);
    color: var(--gray-600);
}

.igm-dir__reset {
    border: 0;
    background: none;
    padding: 6px 0;
    font: 600 13px/1 var(--font-body);
    color: var(--navy-700);
    cursor: pointer;
    text-decoration: underline;
}

.igm-dir__reset[hidden] { display: none; }

/* Groups and cards -------------------------------------------------------- */

.igm-dir__group { margin: 22px 0 0; }
.igm-dir__group[hidden] { display: none; }

.igm-dir__letter-head {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin: 0 0 12px;
    padding: 9px 0;
    border-bottom: 2px solid var(--navy-700);
}

.igm-dir__letter-mark {
    font: 800 21px/1 var(--font-display);
    color: var(--navy-700);
}

.igm-dir__letter-count {
    font: 12.5px/1 var(--font-body);
    color: var(--gray-600);
}

.igm-dir__cards {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
}

@media (min-width: 700px) {
    .igm-dir__cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1100px) {
    .igm-dir__cards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.igm-dir__card { min-width: 0; }
.igm-dir__card[hidden] { display: none; }

.igm-dir__card-link {
    display: flex;
    flex-direction: column;
    gap: 4px;
    height: 100%;
    padding: 14px 15px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-lg);
    background: var(--white);
    text-decoration: none;
    transition: var(--transition-fast);
}

.igm-dir__card-link:hover {
    border-color: var(--navy-700);
    box-shadow: var(--shadow-sm);
}

.igm-dir__name {
    font: 600 16px/1.35 var(--font-display);
    color: var(--navy-700);
}

.igm-dir__meta {
    font: 12.5px/1.55 var(--font-meta);
    color: var(--gray-600);
}

.igm-dir__badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 4px 0 2px;
}

.igm-dir__badge {
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    background: var(--brand-tint-08);
    font: 600 10.5px/1.4 var(--font-body);
    letter-spacing: var(--ls-caps);
    text-transform: uppercase;
    color: var(--navy-700);
}

.igm-dir__foot {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 10px;
    margin-top: auto;
    padding-top: 10px;
    border-top: 1px solid var(--gray-200);
    font: 13px/1.3 var(--font-body);
    color: var(--gray-700);
}

.igm-dir__from,
.igm-dir__more {
    font-weight: 600;
    color: var(--navy-700);
}

/* Empty state ------------------------------------------------------------- */

.igm-dir__empty {
    margin: 24px 0;
    padding: 34px 24px;
    border: 1px dashed var(--gray-400);
    border-radius: var(--radius-lg);
    text-align: center;
}

.igm-dir__empty[hidden] { display: none; }

.igm-dir__empty-title {
    margin: 0 0 8px;
    font: 700 20px/1.3 var(--font-display);
    color: var(--navy-700);
}

.igm-dir__empty-body {
    max-width: 460px;
    margin: 0 auto 16px;
    font: 15px/1.75 var(--font-body);
    color: var(--gray-700);
}

/* Long-form sections ------------------------------------------------------ */

.igm-dir__section-title {
    margin: 32px 0 12px;
    font: 700 22px/1.3 var(--font-display);
    color: var(--navy-700);
}

.igm-dir__faq-item { border-bottom: 1px solid var(--gray-200); }

.igm-dir__faq-q {
    padding: 15px 0;
    font: 600 15.5px/1.45 var(--font-display);
    color: var(--navy-700);
    cursor: pointer;
}

.igm-dir__faq-a {
    margin: 0;
    padding: 0 0 15px;
    font: 14.5px/1.75 var(--font-body);
    color: var(--gray-700);
}

.igm-dir__glossary-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
}

@media (min-width: 820px) {
    .igm-dir__glossary-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.igm-dir__glossary-item {
    padding: 16px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-lg);
}

.igm-dir__glossary-term {
    margin: 0 0 6px;
    font: 600 15px/1.35 var(--font-display);
    color: var(--navy-700);
}

.igm-dir__glossary-body {
    margin: 0;
    font: 14px/1.7 var(--font-body);
    color: var(--gray-700);
}

/* =============================================================================
   Molecule detail
   ============================================================================= */

.igm-mol__head { margin: 0 0 20px; max-width: 760px; }

.igm-mol__title {
    margin: 6px 0 10px;
    font: 700 clamp(26px, 4.4vw, 40px)/1.18 var(--font-display);
    letter-spacing: var(--ls-tight);
    color: var(--navy-700);
}

.igm-mol__lead {
    margin: 0;
    font: 15px/1.75 var(--font-body);
    color: var(--gray-700);
}

.igm-mol__body {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
}

@media (min-width: 1100px) {
    .igm-mol__body {
        grid-template-columns: minmax(0, 1fr) 320px;
        column-gap: 36px;
        align-items: start;
    }

    .igm-mol__aside { position: sticky; top: 24px; }
}

.igm-mol__main { min-width: 0; }
.igm-mol__aside > * { margin-bottom: 16px; }
.igm-mol__aside > *:last-child { margin-bottom: 0; }

/* Comparison table --------------------------------------------------------- */

.igm-mol__table {
    width: 100%;
    margin: 16px 0 0;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-lg);
    border-collapse: separate;
    border-spacing: 0;
    overflow: hidden;
}

.igm-mol__table th,
.igm-mol__table td {
    padding: 12px 14px;
    text-align: left;
    vertical-align: middle;
    border-bottom: 1px solid var(--gray-200);
    font: 14px/1.5 var(--font-body);
    color: var(--gray-900);
}

.igm-mol__table thead th {
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-300);
    font: 600 11px/1.3 var(--font-body);
    letter-spacing: var(--ls-caps);
    text-transform: uppercase;
    color: var(--gray-600);
    white-space: nowrap;
}

.igm-mol__table tbody tr:last-child th,
.igm-mol__table tbody tr:last-child td { border-bottom: 0; }

.igm-mol__table tbody th {
    font: 600 14.5px/1.4 var(--font-display);
}

.igm-mol__table tbody th a { color: var(--navy-700); }
.igm-mol__table tbody th a:hover { color: var(--red-500); }

.igm-mol__price { font-weight: 700; color: var(--navy-700); white-space: nowrap; }

.igm-mol__table tbody tr[hidden] { display: none; }

/* Below the table's natural width each row becomes a card and every cell
   restates its own column heading, so no column is lost to a scrollbar. */
@media (max-width: 860px) {
    .igm-mol__table,
    .igm-mol__table tbody,
    .igm-mol__table tr,
    .igm-mol__table th,
    .igm-mol__table td {
        display: block;
        width: auto;
    }

    .igm-mol__table thead {
        position: absolute;
        width: 1px;
        height: 1px;
        overflow: hidden;
        clip-path: inset(50%);
    }

    .igm-mol__table {
        border: 0;
        border-radius: 0;
    }

    .igm-mol__table tbody tr {
        margin-bottom: 10px;
        border: 1px solid var(--gray-300);
        border-radius: var(--radius-lg);
        background: var(--white);
        overflow: hidden;
    }

    .igm-mol__table tbody tr[hidden] { display: none; }

    .igm-mol__table tbody th {
        padding: 13px 14px;
        background: var(--gray-50);
        border-bottom: 1px solid var(--gray-300);
    }

    .igm-mol__table td {
        display: flex;
        justify-content: space-between;
        gap: 14px;
        padding: 10px 14px;
    }

    .igm-mol__table td::before {
        content: attr(data-title);
        flex: none;
        font: 600 11px/1.6 var(--font-body);
        letter-spacing: var(--ls-caps);
        text-transform: uppercase;
        color: var(--gray-600);
    }
}

.igm-mol__prose {
    font: 15.5px/1.8 var(--font-body);
    color: var(--gray-700);
    text-wrap: pretty;
}

.igm-mol__prose h2,
.igm-mol__prose h3 {
    margin: 22px 0 8px;
    font-family: var(--font-display);
    color: var(--navy-700);
}

/* =============================================================================
   Manufacturer profile
   ============================================================================= */

.igm-maker__head { margin: 0 0 24px; max-width: 780px; }

.igm-maker__title {
    margin: 6px 0 8px;
    font: 700 clamp(26px, 4.4vw, 40px)/1.18 var(--font-display);
    letter-spacing: var(--ls-tight);
    color: var(--navy-700);
}

.igm-maker__location,
.igm-maker__focus {
    margin: 0 0 8px;
    font: 14px/1.6 var(--font-meta);
    color: var(--gray-600);
}

.igm-maker__intro {
    margin-top: 12px;
    font: 15px/1.75 var(--font-body);
    color: var(--gray-700);
}