:root {
    --itg-blue: #0d3b66;
    --itg-orange: #eb681e;
    --itg-light: #f8f9fb;
}

body {
    font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
    color: #2c3e50;
    background: #fff;
}

.text-itg-blue { color: var(--itg-blue) !important; }
.text-itg-orange { color: var(--itg-orange) !important; }
.bg-itg-blue { background-color: var(--itg-blue) !important; }
.bg-itg-orange { background-color: var(--itg-orange) !important; }

.btn-itg {
    background-color: var(--itg-orange);
    border-color: var(--itg-orange);
    color: #fff;
}
.btn-itg:hover {
    background-color: #c8551a;
    border-color: #c8551a;
    color: #fff;
}

.btn-outline-itg {
    border-color: var(--itg-orange);
    color: var(--itg-orange);
}
.btn-outline-itg:hover {
    background: var(--itg-orange);
    color: #fff;
}

/* Navbar */
.navbar-itg {
    background: var(--itg-blue);
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.navbar-itg .nav-link {
    color: #fff !important;
    font-weight: 500;
    padding: .75rem 1rem !important;
    transition: color .15s;
}
.navbar-itg .nav-link:hover {
    color: var(--itg-orange) !important;
}
.navbar-itg .dropdown-menu {
    border-radius: 4px;
    border: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--itg-blue) 0%, #1e5b8f 100%);
    color: #fff;
    padding: 8rem 0 6rem;
    text-align: center;
}
.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}
.hero p {
    font-size: 1.25rem;
    opacity: .9;
    max-width: 700px;
    margin: 0 auto 2rem;
}

/* Sections */
.section {
    padding: 5rem 0;
}
.section-title {
    text-align: center;
    margin-bottom: 3rem;
}
.section-title h2 {
    color: var(--itg-blue);
    font-weight: 700;
    margin-bottom: .5rem;
}
.section-title .lead {
    color: #6c757d;
}

.bg-light-itg { background: var(--itg-light); }

/* Stat cards */
.stat-card {
    text-align: center;
    padding: 2rem 1rem;
}
.stat-card .num {
    font-size: 3rem;
    font-weight: 800;
    color: var(--itg-orange);
    line-height: 1;
}
.stat-card .label {
    font-size: 1rem;
    color: var(--itg-blue);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
    margin-top: .5rem;
}

/* Group card */
.group-card {
    border: none;
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    transition: transform .2s, box-shadow .2s;
    height: 100%;
    text-decoration: none;
    color: inherit;
}
.group-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    color: inherit;
}
.group-card .icon {
    font-size: 3rem;
    color: var(--itg-orange);
    margin-bottom: 1rem;
}

/* Event card */
.event-card {
    border: none;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    transition: box-shadow .2s;
    height: 100%;
    background: #fff;
}
.event-card:hover { box-shadow: 0 8px 24px rgba(0,0,0,0.12); }
.event-card .img {
    height: 200px;
    background-size: cover;
    background-position: center;
    background-color: #e9ecef;
}
.event-card .body { padding: 1.25rem; }
.event-card .date {
    color: var(--itg-orange);
    font-weight: 600;
    font-size: .9rem;
}

/* Member card */
.member-card {
    text-align: center;
    padding: 1.5rem 1rem;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 1px 6px rgba(0,0,0,0.05);
    height: 100%;
}
.member-card img {
    width: 110px;
    height: 110px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--itg-light);
    margin-bottom: 1rem;
}
.member-card .name {
    font-weight: 600;
    color: var(--itg-blue);
    margin-bottom: .25rem;
}
.member-card .role {
    color: var(--itg-orange);
    font-size: .9rem;
}

/* Sponsor logos */
.sponsor-logo {
    height: 60px;
    object-fit: contain;
    filter: grayscale(80%);
    opacity: .7;
    transition: all .2s;
}
.sponsor-logo:hover {
    filter: none;
    opacity: 1;
}

/* Footer */
.footer {
    background: #1a2332;
    color: #aab;
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
}
.footer a { color: #ccd; text-decoration: none; }
.footer a:hover { color: var(--itg-orange); }
.footer h6 {
    color: #fff;
    font-weight: 600;
    margin-bottom: 1rem;
}

/* Page hero */
.page-hero {
    background: linear-gradient(135deg, var(--itg-blue) 0%, #1e5b8f 100%);
    color: #fff;
    padding: 4rem 0 3rem;
    margin-bottom: 3rem;
}
.page-hero h1 { font-weight: 700; }

/* Breadcrumb on dark hero */
.page-hero .breadcrumb { background: transparent; padding: 0; }
.page-hero .breadcrumb a { color: rgba(255,255,255,0.75); }
.page-hero .breadcrumb .active { color: #fff; }

/* Content prose */
.prose { line-height: 1.75; font-size: 1.05rem; }
.prose img { max-width: 100%; height: auto; border-radius: 6px; margin: 1rem 0; }
.prose h2, .prose h3 { color: var(--itg-blue); margin-top: 2rem; }
.prose a { color: var(--itg-orange); }

@media (max-width: 768px) {
    .hero { padding: 5rem 0 4rem; }
    .hero h1 { font-size: 2rem; }
    .section { padding: 3rem 0; }
}