/* ============================================================
   ROOT VARIABLES (UR BRAND #00628b)
   ============================================================ */
:root {
    --ur-blue: #00628b;
    --ur-blue-dark: #004060;
    --ur-blue-deeper: #002b40;
    --ur-blue-soft: #E6F0F6;
    --accent-gold: #F5A623;
    --accent-gold-soft: #FFF4E0;
    --bg-light: #F4F8FC;
    --text-dark: #1A2A3A;
    --text-muted: #4A5B6B;
    --shadow-sm: 0 4px 20px rgba(0, 98, 139, 0.08);
    --shadow-lg: 0 20px 50px rgba(0, 98, 139, 0.12);
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --radius: 20px;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Work Sans', -apple-system, sans-serif;
    background: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
}

a {
    text-decoration: none;
    cursor: pointer;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================================
   STICKY NAVIGATION
   ============================================================ */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 98, 139, 0.08);
    padding: 0 24px;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 74px;
    padding: 0;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--ur-blue-deeper);
}

.nav-logo .logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--ur-blue), var(--ur-blue-dark));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

.nav-logo span {
    color: var(--accent-gold);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2.5px;
    background: var(--accent-gold);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--ur-blue);
}
.nav-links a:hover::after {
    width: 100%;
}

.nav-links a.active-link {
    color: var(--ur-blue);
    font-weight: 700;
}
.nav-links a.active-link::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn-outline-ur {
    padding: 8px 22px;
    border-radius: 50px;
    border: 2px solid var(--ur-blue);
    color: var(--ur-blue);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    background: transparent;
    cursor: pointer;
}

.btn-outline-ur:hover {
    background: var(--ur-blue);
    color: white;
    box-shadow: 0 6px 20px rgba(0, 98, 139, 0.3);
}

.btn-solid-ur {
    padding: 8px 22px;
    border-radius: 50px;
    border: none;
    background: linear-gradient(135deg, var(--ur-blue), var(--ur-blue-dark));
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0, 98, 139, 0.25);
    cursor: pointer;
}

.btn-solid-ur:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(0, 98, 139, 0.35);
}

.nav-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--text-dark);
    background: none;
    border: none;
    cursor: pointer;
}

/* ============================================================
   HERO (Main)
   ============================================================ */
.hero-main {
    background: linear-gradient(145deg, var(--ur-blue-deeper) 0%, var(--ur-blue) 60%, var(--ur-blue-dark) 100%);
    padding: 60px 0 70px;
    position: relative;
    overflow: hidden;
    border-bottom: 8px solid var(--accent-gold);
}

.hero-main::before {
    content: '';
    position: absolute;
    top: -150px;
    right: -150px;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: rgba(245, 166, 35, 0.06);
    pointer-events: none;
}
.hero-main::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(245, 166, 35, 0.04);
    pointer-events: none;
}

.hero-main .container {
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(245, 166, 35, 0.15);
    color: var(--accent-gold);
    font-weight: 600;
    font-size: 0.75rem;
    letter-spacing: 1.5px;
    padding: 6px 22px;
    border-radius: 50px;
    text-transform: uppercase;
    border: 1px solid rgba(245, 166, 35, 0.25);
    margin-bottom: 20px;
}

.hero-main h1 {
    font-size: 3.8rem;
    font-weight: 800;
    color: white;
    line-height: 1.15;
    margin-bottom: 12px;
}

.hero-main h1 .gold-text {
    color: var(--accent-gold);
    position: relative;
}
.hero-main h1 .gold-text::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--accent-gold);
    border-radius: 4px;
    opacity: 0.35;
}

.hero-main p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.25rem;
    font-weight: 300;
    max-width: 650px;
    margin: 0 auto 36px;
}

.hero-search {
    max-width: 620px;
    margin: 0 auto 20px;
    position: relative;
}

.hero-search i {
    position: absolute;
    left: 22px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--ur-blue);
    font-size: 1.1rem;
    opacity: 0.6;
}

.hero-search input {
    width: 100%;
    padding: 18px 24px 18px 58px;
    border: none;
    border-radius: 60px;
    font-size: 1.05rem;
    font-family: 'Inter', sans-serif;
    background: white;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.15);
    transition: var(--transition);
    color: var(--text-dark);
}

.hero-search input:focus {
    outline: none;
    box-shadow: 0 8px 50px rgba(0, 0, 0, 0.25);
    transform: scale(1.01);
}

.hero-search .search-btn {
    position: absolute;
    right: 6px;
    top: 6px;
    bottom: 6px;
    padding: 0 28px;
    border: none;
    background: linear-gradient(135deg, var(--ur-blue), var(--ur-blue-dark));
    color: white;
    font-weight: 700;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
}

.hero-search .search-btn:hover {
    background: var(--accent-gold);
    color: var(--ur-blue-deeper);
}
.hero-search .search-btn:hover i {
    color: var(--ur-blue-deeper);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}
.stat-number {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--accent-gold);
    display: block;
    line-height: 1.2;
}
.stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.75);
    font-weight: 400;
}

/* ============================================================
   HERO LITE (Inner pages)
   ============================================================ */
.hero-lite {
    background: linear-gradient(135deg, var(--ur-blue-deeper) 0%, var(--ur-blue) 70%, var(--ur-blue-dark) 100%);
    padding: 50px 0 40px;
    text-align: center;
    border-bottom: 6px solid var(--accent-gold);
    position: relative;
    overflow: hidden;
}
.hero-lite::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(245, 166, 35, 0.06);
    pointer-events: none;
}
.hero-lite h1 {
    font-size: 2.8rem;
    font-weight: 800;
    color: white;
}
.hero-lite h1 .gold-text {
    color: var(--accent-gold);
}
.hero-lite p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 8px auto 0;
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}
.section-header h2 {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--ur-blue-deeper);
}
.section-header h2 .gold {
    color: var(--accent-gold);
}
.section-header .subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    font-weight: 300;
    margin-top: 6px;
}
.section-header .line {
    width: 70px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-gold), var(--ur-blue));
    margin: 14px auto 0;
    border-radius: 4px;
}

/* ============================================================
   STAFF CARDS
   ============================================================ */
.staff-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.staff-card {
    background: white;
    border-radius: var(--radius);
    padding: 28px 20px 22px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.02);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.staff-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--ur-blue), var(--accent-gold));
    opacity: 0;
    transition: var(--transition);
}

.staff-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}
.staff-card:hover::before {
    opacity: 1;
}

.avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.4rem;
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, var(--ur-blue), var(--ur-blue-dark));
    border: 4px solid white;
    box-shadow: 0 6px 25px rgba(0, 98, 139, 0.2);
    transition: var(--transition);
    user-select: none;
    text-transform: uppercase;
}

.staff-card:hover .avatar {
    transform: scale(1.05);
    box-shadow: 0 8px 35px rgba(0, 98, 139, 0.3);
}

.staff-name {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--ur-blue-deeper);
    margin-bottom: 2px;
}
.staff-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-gold);
    margin-bottom: 4px;
}
.staff-dept {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    background: var(--accent-gold-soft);
    color: var(--ur-blue-dark);
    padding: 4px 16px;
    border-radius: 50px;
    border: 1px solid rgba(245, 166, 35, 0.25);
    margin-top: 4px;
}
.card-divider {
    width: 30px;
    height: 3px;
    background: var(--accent-gold);
    margin: 14px auto 12px;
    border-radius: 4px;
    opacity: 0.5;
}
.staff-contact {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 4px;
}
.staff-contact a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--bg-light);
    color: var(--text-muted);
    font-size: 1rem;
    transition: var(--transition);
}
.staff-contact a:hover {
    background: var(--ur-blue);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 6px 18px rgba(0, 98, 139, 0.3);
}

/* ============================================================
   RESEARCH CLUSTERS
   ============================================================ */
.clusters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}
.cluster-card {
    background: white;
    padding: 32px 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border-left: 6px solid var(--accent-gold);
    transition: var(--transition);
}
.cluster-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.cluster-card i {
    font-size: 2.4rem;
    color: var(--ur-blue);
    margin-bottom: 12px;
    display: block;
}
.cluster-card h4 {
    font-weight: 700;
    color: var(--ur-blue-deeper);
    font-size: 1.2rem;
}
.cluster-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-top: 4px;
}

/* ============================================================
   CONTACT & ABOUT
   ============================================================ */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-top: 20px;
}
.contact-form {
    background: white;
    padding: 36px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}
.contact-form label {
    font-weight: 600;
    color: var(--ur-blue-deeper);
    display: block;
    margin-bottom: 4px;
}
.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #E8EFEC;
    border-radius: 12px;
    font-family: 'Inter', sans-serif;
    transition: var(--transition);
    margin-bottom: 18px;
    background: var(--bg-light);
}
.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--ur-blue);
    box-shadow: 0 0 0 5px rgba(0, 98, 139, 0.08);
}
.contact-form textarea {
    min-height: 140px;
    resize: vertical;
}
.contact-form .btn-solid-ur {
    padding: 14px 40px;
    font-size: 1rem;
    width: 100%;
}

.contact-info-item {
    background: white;
    padding: 24px 28px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 16px;
}
.contact-info-item i {
    font-size: 1.8rem;
    color: var(--ur-blue);
    width: 50px;
    height: 50px;
    background: var(--ur-blue-soft);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.contact-info-item h4 {
    font-weight: 700;
    color: var(--ur-blue-deeper);
    margin-bottom: 2px;
}
.contact-info-item p {
    color: var(--text-muted);
    margin: 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 20px;
}
.values-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.value-item {
    background: white;
    padding: 24px;
    border-radius: 14px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border-top: 4px solid var(--accent-gold);
}
.value-item i {
    font-size: 2rem;
    color: var(--ur-blue);
    margin-bottom: 8px;
}
.leadership-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 24px;
    margin-top: 20px;
}
.leader-card {
    background: white;
    padding: 24px;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--shadow-sm);
}
.leader-card .avatar-sm {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--ur-blue), var(--ur-blue-dark));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0 auto 12px;
    text-transform: uppercase;
}

/* ============================================================
   FOOTER
   ============================================================ */
.portal-footer {
    background: var(--ur-blue-deeper);
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
    padding: 32px 20px;
    border-top: 5px solid var(--accent-gold);
    margin-top: 40px;
}
.portal-footer strong {
    color: var(--accent-gold);
}
.portal-footer .footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin: 12px 0 16px;
    flex-wrap: wrap;
}
.portal-footer .footer-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    transition: var(--transition);
}
.portal-footer .footer-links a:hover {
    color: var(--accent-gold);
}
.portal-footer .social-icons {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 16px;
}
.portal-footer .social-icons a {
    color: rgba(255, 255, 255, 0.5);
    font-size: 1.2rem;
    transition: var(--transition);
}
.portal-footer .social-icons a:hover {
    color: var(--accent-gold);
    transform: translateY(-3px);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 992px) {
    .hero-main h1 {
        font-size: 2.8rem;
    }
    .hero-stats {
        gap: 35px;
    }
    .about-grid,
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 74px;
        left: 0;
        right: 0;
        background: white;
        padding: 24px;
        border-bottom: 1px solid #eee;
        box-shadow: var(--shadow-sm);
        gap: 16px;
        align-items: flex-start;
    }
    .nav-links.open {
        display: flex;
    }
    .nav-actions .btn-outline-ur,
    .nav-actions .btn-solid-ur {
        display: none;
    }

    .hero-main {
        padding: 40px 0 50px;
    }
    .hero-main h1 {
        font-size: 2.2rem;
    }
    .hero-main p {
        font-size: 1rem;
    }
    .hero-search .search-btn {
        position: relative;
        right: auto;
        top: auto;
        bottom: auto;
        width: 100%;
        margin-top: 12px;
        padding: 14px;
        border-radius: 50px;
    }
    .hero-stats {
        gap: 25px;
    }
    .stat-number {
        font-size: 1.8rem;
    }
    .section-header h2 {
        font-size: 1.8rem;
    }
    .hero-lite h1 {
        font-size: 2rem;
    }
    .values-grid {
        grid-template-columns: 1fr;
    }
    .staff-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (max-width: 480px) {
    .hero-main h1 {
        font-size: 1.7rem;
    }
    .hero-stats {
        flex-direction: column;
        gap: 12px;
    }
    .staff-grid {
        grid-template-columns: 1fr;
        max-width: 340px;
        margin: 0 auto;
    }
    .clusters-grid {
        grid-template-columns: 1fr;
    }
}