/* =========================================
   Team Page - SELAB@HKNU (Redesigned)
   ========================================= */

.team-page {
    --ring: 0 0 0 4px rgba(59,130,246,.18);
}

.team-page .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ---- Hero ---- */
.team-page .hero {
    position: relative;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: #fff;
}
.team-page .hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 18% 18%, rgba(255,255,255,.16), transparent 42%),
        radial-gradient(circle at 82% 28%, rgba(255,255,255,.12), transparent 46%);
    pointer-events: none;
}
.team-page .hero__inner { position: relative; }
.team-page .hero__title {
    font-size: clamp(1.8rem, 2.5vw, 2.5rem);
    font-weight: 900;
    margin: 0 0 10px;
    letter-spacing: -0.02em;
}
.team-page .hero__subtitle {
    margin: 0 auto;
    max-width: 56ch;
    font-size: 1.05rem;
    color: rgba(255,255,255,.85);
    line-height: 1.7;
}

/* ---- Tabs ---- */
.tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin: 32px 0 36px;
    padding: 6px;
    background: var(--color-light-bg);
    border: 1px solid var(--color-border);
    border-radius: 999px;
}
.tabs__item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 700;
    font-size: .92rem;
    color: var(--color-text-sub);
    transition: all .2s ease;
    user-select: none;
}
.tabs__item i { font-size: 1.05em; }
.tabs__item:hover {
    background: rgba(255,255,255,.7);
    color: var(--color-primary);
}
.tabs__item.is-active {
    background: #fff;
    color: var(--color-accent);
    box-shadow: 0 4px 12px rgba(2,6,23,.08);
}
.tabs__item:focus-visible,
.contact-chip:focus-visible,
.member-card__link:focus-visible {
    outline: none;
    box-shadow: var(--ring);
}

/* =============================================
   PROFESSOR SECTION
   ============================================= */
.prof-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 36px;
    align-items: start;
}

/* -- Profile Card -- */
.prof-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    position: sticky;
    top: 90px;
}
.prof-card__photo {
    width: 100%;
    aspect-ratio: 3/4;
    overflow: hidden;
    background: var(--color-bg-light);
}
.prof-card__photo img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 20%;
}
.prof-card__info {
    padding: 24px 24px 0;
    text-align: center;
}
.prof-card__name {
    font-size: 1.4rem;
    font-weight: 900;
    margin: 0 0 4px;
    letter-spacing: -0.02em;
    color: var(--color-text-main);
}
.prof-card__role {
    margin: 0 0 6px;
    color: var(--color-accent);
    font-weight: 700;
    font-size: .95rem;
}
.prof-card__dept {
    margin: 0;
    color: var(--color-secondary);
    font-size: .88rem;
    line-height: 1.5;
}

/* Contact chips */
.prof-card__contact {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 20px;
    border-top: 1px solid var(--color-border);
}
.contact-chip {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    background: #fff;
    text-decoration: none;
    color: var(--color-text-main);
    font-size: .88rem;
    font-weight: 500;
    transition: all .15s ease;
}
.contact-chip i {
    color: var(--color-accent);
    font-size: 1rem;
    flex-shrink: 0;
}
.contact-chip:hover {
    border-color: var(--color-accent);
    background: var(--color-accent-soft);
    color: var(--color-primary);
}
.contact-chip--primary {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
    font-weight: 700;
    justify-content: center;
}
.contact-chip--primary i { color: #fff; }
.contact-chip--primary:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* -- CV Content -- */
.prof-content {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.cv-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 28px;
}
.cv-card__header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 14px;
    border-bottom: 2px solid var(--color-bg-light);
    margin-bottom: 20px;
}
.cv-card__header i {
    font-size: 1.2rem;
    color: var(--color-accent);
}
.cv-card__header h3 {
    font-size: 1.15rem;
    font-weight: 800;
    margin: 0;
    letter-spacing: -0.01em;
}
.cv-card__sub {
    margin: 20px 0 10px;
    font-size: .82rem;
    color: var(--color-secondary);
    letter-spacing: .08em;
    text-transform: uppercase;
    font-weight: 800;
}

/* CV List (Education/Experience) */
.cv-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.cv-list__item {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 16px;
    align-items: baseline;
}
.cv-list__date {
    color: var(--color-accent);
    font-weight: 800;
    font-size: .9rem;
    white-space: nowrap;
}
.cv-list__text {
    color: var(--color-text-dark);
    line-height: 1.6;
    font-size: .93rem;
    min-width: 0;
}
.cv-list__text p { margin: 0; }

/* CV Bullets (Services/Talks) */
.cv-bullets {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.cv-bullets li {
    position: relative;
    padding-left: 16px;
    color: var(--color-text-dark);
    line-height: 1.65;
    font-size: .93rem;
}
.cv-bullets li::before {
    content: "\2022";
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 900;
}
.text-muted { color: var(--color-secondary); }

/* =============================================
   MEMBER CARDS (Researchers / Alumni)
   ============================================= */
.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 24px;
    align-items: stretch;
}

.member-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    content-visibility: auto;
    contain-intrinsic-size: 380px;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.member-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px -8px rgba(2,6,23,.12);
    border-color: var(--color-accent);
}

/* Banner + Avatar */
.member-card__img {
    position: relative;
    height: 80px;
    background: linear-gradient(135deg, #e8eef6 0%, #f0f4fa 100%);
}
.member-card__img img {
    position: absolute;
    bottom: -55px;
    left: 50%;
    transform: translateX(-50%);
    width: 130px;
    height: 130px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center 20%;
    border: 4px solid #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,.12);
    transition: transform .2s ease, box-shadow .2s ease;
    z-index: 1;
}
.member-card:hover .member-card__img img {
    transform: translateX(-50%) scale(1.05);
    box-shadow: 0 6px 20px rgba(0,0,0,.18);
}

/* Body */
.member-card__body {
    padding: 68px 20px 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
    text-align: center;
}

.member-card__top {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}
.member-card__name {
    font-size: 1.1rem;
    font-weight: 800;
    margin: 0;
    color: var(--color-text-main);
    line-height: 1.3;
}
.member-card__role {
    font-size: .72rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 999px;
    background: var(--color-accent-soft);
    color: var(--color-accent);
    white-space: nowrap;
    letter-spacing: .02em;
}

.member-card__tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
    padding-top: 4px;
}
.member-card__tag {
    font-size: .75rem;
    padding: 4px 10px;
    background: var(--color-bg-light);
    border: 1px solid rgba(226,232,240,.8);
    border-radius: 999px;
    color: var(--color-secondary);
    font-weight: 600;
}

.member-card__link {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 11px;
    border-radius: 10px;
    background: var(--color-accent);
    border: none;
    text-decoration: none;
    color: #fff;
    font-size: .88rem;
    font-weight: 700;
    transition: all .2s ease;
}
.member-card__link:hover {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,.15);
}
.member-card__link:visited,
.member-card__link:hover,
.member-card__link:active {
    color: #fff;
}
.member-card__link i { font-size: .85rem; }

/* Empty state */
.members-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 64px 20px;
    color: var(--color-secondary);
}
.members-empty i {
    display: block;
    font-size: 3rem;
    opacity: .25;
    margin-bottom: 14px;
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 992px) {
    .prof-layout {
        grid-template-columns: 1fr;
    }
    .prof-card {
        position: static;
        max-width: 400px;
        margin: 0 auto;
    }
    .cv-list__item {
        grid-template-columns: 1fr;
        gap: 4px;
    }
    .cv-list__date { font-size: .85rem; }
}

@media (max-width: 640px) {
    .team-page .container { padding: 0 16px; }
    .tabs {
        flex-wrap: wrap;
        border-radius: 14px;
        gap: 6px;
        padding: 6px;
    }
    .tabs__item {
        flex: 1 1 auto;
        justify-content: center;
        padding: 9px 14px;
        font-size: .85rem;
        min-width: 0;
    }
    .member-card__img img { width: 100px; height: 100px; bottom: -45px; }
    .member-card__body { padding-top: 56px; }
    .prof-card { max-width: 100%; }
    .cv-card { padding: 20px; }
}

/* Accessibility */
.member-card:focus-within {
    box-shadow: var(--ring);
    border-color: rgba(59,130,246,.35);
}

@media (prefers-reduced-motion: reduce) {
    .team-page * { scroll-behavior: auto !important; }
    .tabs__item, .member-card, .member-card__img img, .contact-chip, .member-card__link { transition: none !important; }
}