.guestbook-page {
    background: #f6f8fb;
    color: #1f2937;
    min-height: calc(100vh - 160px);
    padding-bottom: 56px;
}

.guestbook-hero {
    background: linear-gradient(135deg, #12385f 0%, #1f6f8b 100%);
    color: #fff;
    padding: 54px 16px 96px;
    text-align: center;
}

.guestbook-hero h1 {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 14px;
}

.guestbook-hero p {
    font-size: 17px;
    max-width: 720px;
    margin: 0 auto;
    line-height: 1.65;
    color: rgba(255,255,255,.88);
}

.guestbook-card {
    background: #fff;
    border: 1px solid #e5e9f2;
    border-radius: 8px;
    box-shadow: 0 18px 38px rgba(15, 23, 42, .12);
    margin: -58px auto 0;
    max-width: 760px;
    padding: 32px;
}

.guestbook-card label {
    color: #253044;
    font-weight: 700;
    margin-bottom: 8px;
}

.guestbook-card .form-control {
    border: 1px solid #cfd7e6;
    border-radius: 6px;
    min-height: 48px;
}

.guestbook-card .form-control:focus {
    border-color: #1f6f8b;
    box-shadow: 0 0 0 3px rgba(31, 111, 139, .16);
}

.guestbook-required {
    color: #d84040;
}

.guestbook-actions {
    align-items: center;
    display: flex;
    gap: 12px;
    justify-content: space-between;
    margin-top: 24px;
}

.guestbook-submit {
    background: #1f6f8b;
    border: 0;
    border-radius: 6px;
    color: #fff;
    font-weight: 700;
    min-height: 46px;
    padding: 0 24px;
}

.guestbook-submit:hover,
.guestbook-submit:focus {
    background: #185a72;
    color: #fff;
}

.guestbook-reset {
    color: #64748b;
    text-decoration: none;
}

.guestbook-reset:hover {
    color: #1f6f8b;
    text-decoration: none;
}

.guestbook-success {
    background: #e8f7ef;
    border: 1px solid #bce5ca;
    border-radius: 8px;
    color: #17613a;
    font-weight: 700;
    margin-bottom: 18px;
    padding: 14px 16px;
}

.guestbook-error {
    background: #fff1f2;
    border: 1px solid #fecdd3;
    border-radius: 8px;
    color: #be123c;
    margin-bottom: 18px;
    padding: 14px 16px;
}

.guestbook-note {
    color: #64748b;
    font-size: 13px;
    margin-top: 18px;
}

@media (max-width: 575.98px) {
    .guestbook-hero {
        padding: 42px 14px 84px;
    }

    .guestbook-hero h1 {
        font-size: 30px;
    }

    .guestbook-card {
        margin-left: 14px;
        margin-right: 14px;
        padding: 22px;
    }

    .guestbook-actions {
        align-items: stretch;
        flex-direction: column;
    }
}