/* ---------------------------------------------------------
   FIELDS OF EXPERTISE (expertise.html)
   --------------------------------------------------------- */

.fields-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    max-width: 100%;
}

.field-card {
    position: relative;
    min-height: 190px;
    display: flex;
    align-items: flex-end;
    background-size: cover;
    background-position: center;
    background-color: var(--color-paper-alt);
    border: 1px solid var(--color-rule);
    cursor: pointer;
    overflow: hidden;
    padding: 0;
}

.field-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(20, 20, 16, 0.78) 0%, rgba(20, 20, 16, 0.15) 55%, rgba(20, 20, 16, 0) 100%);
}

.field-card:hover::after {
    background: linear-gradient(to top, rgba(20, 20, 16, 0.85) 0%, rgba(20, 20, 16, 0.25) 55%, rgba(20, 20, 16, 0) 100%);
}

.field-card-label {
    position: relative;
    z-index: 1;
    padding: 20px;
    width: 100%;
}

.field-card-label .field-num {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-brass-light);
    letter-spacing: 1px;
    display: block;
    margin-bottom: 6px;
}

.field-card-label h3 {
    font-family: var(--font-display);
    font-size: 21px;
    color: #FFFDF9;
    margin: 0;
}

/* ---- Modal detail view ---- */

.field-modal {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.field-modal.is-open {
    visibility: visible;
    opacity: 1;
}

.field-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 15, 12, 0.6);
}

.field-modal-panel {
    position: relative;
    background: var(--color-white);
    max-width: 460px;
    width: 100%;
    border: 1px solid var(--color-rule);
    transform: scale(0.94);
    transition: transform 0.2s ease;
    max-height: 86vh;
    overflow-y: auto;
}

.field-modal.is-open .field-modal-panel {
    transform: scale(1);
}

.field-modal-image {
    height: 180px;
    background-size: cover;
    background-position: center;
    background-color: var(--color-paper-alt);
}

.field-modal-body {
    padding: 26px 28px 30px;
}

.field-modal-body .field-num {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-brass);
    letter-spacing: 1px;
    display: block;
    margin-bottom: 8px;
}

.field-modal-body h3 {
    font-family: var(--font-display);
    font-size: 24px;
    color: var(--color-green);
    margin: 0 0 12px;
}

.field-modal-body p {
    font-size: 14.5px;
    color: var(--color-ink-soft);
    margin: 0;
}

.field-modal-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 30px;
    height: 30px;
    border: none;
    background: rgba(255, 255, 255, 0.9);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    border-radius: 50%;
}

.modal-detail-list {
    margin: 0;
    padding-left: 1.25rem;
    list-style-type: disc;
}

.modal-detail-list li {
    margin-bottom: 0.5rem;
    line-height: 1.5;
}

table {
    display: block;
    width: 100%;
    overflow-x: auto;
}

/* Responsive Breakpoints */

@media (max-width: 900px) {
    .fields-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 500px) {
    .fields-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .field-modal {
        padding: 12px;
    }

    .field-modal-panel {
        max-height: 90vh;
    }

    .field-modal-body {
        padding: 18px 16px 20px;
    }
}