:root {
    --brand-blue: #003f8f;
    --brand-green: #23a33d;
}

body {
    background: #f6f8fb;
}

.hero {
    background: linear-gradient(120deg, rgba(0,63,143,.92), rgba(0,63,143,.70)), url('../images/school-hero.jpg');
    background-size: cover;
    background-position: center;
    color: #fff;
    padding: 90px 0;
}

.hero h1 {
    font-size: clamp(2.2rem, 5vw, 4.8rem);
    font-weight: 900;
    line-height: 1;
}

.section-title {
    font-weight: 800;
    color: var(--brand-blue);
}

.feature-card {
    border: 0;
    border-radius: 18px;
    box-shadow: 0 10px 24px rgba(0,0,0,.08);
    height: 100%;
}

.icon-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--brand-blue);
    color: #fff;
    font-weight: 800;
}

.btn-success {
    background: var(--brand-green);
    border-color: var(--brand-green);
}

.dashboard-card {
    border: 0;
    border-radius: 16px;
    box-shadow: 0 8px 20px rgba(0,0,0,.07);
}

.sidebar {
    min-height: 100vh;
    background: #082b5f;
}

.sidebar a {
    color: rgba(255,255,255,.82);
    text-decoration: none;
    display: block;
    padding: 12px 18px;
    border-radius: 10px;
    margin-bottom: 6px;
}

.sidebar a:hover,
.sidebar a.active {
    background: rgba(255,255,255,.14);
    color: #fff;
}