/* Reset & base */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: linear-gradient(to bottom, #f5f9ff, #a24121);
    color: #222;
    line-height: 1.6;
}

/* Layout */
.container {
    max-width: 900px;
    margin: 3rem auto;
    padding: 2rem;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    text-align: center;
}

/* Hero */
.hero h1 {
    color: #002266;
    font-size: 2.6rem;
    margin-bottom: 0.5rem;
}

.tagline {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 2rem;
}

/* RSVP buttons */
.rsvp {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.8rem 1.6rem;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(0,0,0,0.15);
}

.primary {
    background-color: #002266;
    color: #fff;
}

.secondary {
    background-color: #800000;
    color: #fff;
}

/* Details */
.details h2 {
    color: #002266;
    margin-bottom: 1rem;
}

.details ul {
    list-style: none;
    max-width: 600px;
    margin: 0 auto 2.5rem;
    text-align: left;
}

.details li {
    padding: 0.6rem 0;
    font-size: 1.05rem;
}

/* Highlights */
.highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.card {
    background: #f7f9fc;
    padding: 1.4rem;
    border-radius: 12px;
    font-weight: 600;
    color: #800000;
    box-shadow: 0 8px 20px rgba(0,0,0,0.05);
}

/* Image */
.image-section img {
    max-width: 60%;
    border-radius: 14px;
    margin: 2rem auto;
    display: block;
    box-shadow: 0 12px 30px rgba(0,0,0,0.15);
}

/* Footer */
footer {
    margin-top: 2rem;
    font-size: 0.95rem;
    color: #666;
}