body {
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    background: #f6f6f6;
    color: #222;
}

header {
    background: #003249;
    color: #fff;
    padding: 24px 0 10px 0;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
    letter-spacing: 2px;
}

nav {
    margin-top: 12px;
}

nav a {
    color: #fff;
    margin: 0 10px;
    text-decoration: underline;
    font-size: 1.1rem;
}

/* Class Group Sections */
.class-group {
    background: #fff;
    margin: 36px auto 0 auto;
    padding: 32px 28px;
    max-width: 700px;
    border-radius: 14px;
    box-shadow: 0 3px 24px rgba(0,0,0,0.08);
    text-align: center;
}

.class-group.alt {
    background: #f0f7fb;
}

.section-title {
    color: #05668D;
    font-size: 1.6rem;
    margin-bottom: 10px;
}

.section-desc {
    color: #444;
    font-size: 1rem;
    margin-bottom: 10px;
}

.section-price {
    font-size: 1rem;
    color: #003249;
    margin-bottom: 20px;
}

/* Class Cards */
.class-cards {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 10px;
}

.class-card {
    background: #fff;
    border: 2px solid #05668D;
    border-radius: 10px;
    padding: 20px 28px;
    min-width: 180px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}

.class-group.alt .class-card {
    background: #fff;
}

.class-day {
    font-size: 1rem;
    font-weight: bold;
    color: #05668D;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.class-date {
    font-size: 1.1rem;
    font-weight: bold;
    color: #003249;
    margin-bottom: 14px;
}

.eventbrite-btn {
    background: #05668D;
    color: #fff;
    border: none;
    border-radius: 7px;
    padding: 11px 18px;
    font-size: 0.95rem;
    cursor: pointer;
    font-weight: bold;
    text-decoration: none;
    display: inline-block;
    transition: background 0.18s;
}

.eventbrite-btn:hover {
    background: #003249;
}

/* Contact */
.signup {
    background: #fff;
    margin: 36px auto 0 auto;
    padding: 24px 28px;
    border-radius: 14px;
    max-width: 700px;
    box-shadow: 0 2px 18px rgba(0,0,0,0.06);
    text-align: center;
}

.signup h3 {
    color: #05668D;
    margin-bottom: 12px;
}

.note {
    margin-top: 12px;
    font-size: 1rem;
}

.note a {
    color: #05668D;
    text-decoration: underline;
}

/* Calendar */
.calendar-card {
    background: #fff;
    margin: 36px auto 0 auto;
    padding: 32px 28px;
    border-radius: 14px;
    max-width: 700px;
    box-shadow: 0 3px 24px rgba(0,0,0,0.08);
    text-align: center;
}

.calendar-card h2 {
    color: #05668D;
    margin-bottom: 16px;
}

.calendar-card iframe {
    border: 0;
    width: 100%;
    height: 400px;
    display: block;
    margin: 0 auto;
    background: #fff;
}

footer {
    background: #003249;
    color: #fff;
    text-align: center;
    padding: 14px 0;
    font-size: 1rem;
    margin-top: 40px;
    letter-spacing: 0.5px;
}

@media (max-width: 520px) {
    .class-group, .signup, .calendar-card {
        padding: 18px 6vw;
    }
    header h1 {
        font-size: 2rem;
    }
    .class-cards {
        flex-direction: column;
        align-items: center;
    }
    .section-title {
        font-size: 1.3rem;
    }
}