/* Public library patron self-registration (/register) */
.patron-register {
    min-height: 100vh;
    background: linear-gradient(
        165deg,
        color-mix(in srgb, var(--brand-button-bg, #1f4ea7) 6%, #f8fafc) 0%,
        #f1f5f9 45%,
        #f8fafc 100%
    );
    padding: 1.5rem 1rem 3rem;
}

.patron-register__shell {
    max-width: 760px;
    margin: 0 auto;
}

.patron-register__top {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.patron-register__brand {
    text-decoration: none;
    color: inherit;
}

.patron-register__brand-title {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--brand-button-bg, #1f4ea7);
    margin: 0;
    line-height: 1.2;
}

.patron-register__brand-sub {
    font-size: 0.82rem;
    color: #64748b;
    margin: 0.15rem 0 0;
}

.patron-register__home-link {
    font-size: 0.85rem;
    font-weight: 600;
    color: #475569;
    text-decoration: none;
    padding: 0.4rem 0.75rem;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    background: #fff;
}

.patron-register__home-link:hover {
    color: var(--brand-button-bg, #1f4ea7);
    border-color: var(--brand-button-bg, #1f4ea7);
}

.patron-register__hero {
    text-align: center;
    margin-bottom: 1.25rem;
}

.patron-register__hero h1 {
    font-size: 1.65rem;
    font-weight: 800;
    color: #1e293b;
    margin: 0 0 0.35rem;
}

.patron-register__hero p {
    margin: 0;
    color: #64748b;
    font-size: 0.95rem;
    max-width: 36rem;
    margin-inline: auto;
}

.patron-register__notice {
    display: flex;
    gap: 0.65rem;
    align-items: flex-start;
    padding: 0.85rem 1rem;
    margin-bottom: 1rem;
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    border-radius: 10px;
    font-size: 0.85rem;
    color: #1e40af;
}

.patron-register__card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    box-shadow: 0 8px 32px rgba(15, 23, 42, 0.08);
    padding: 1.25rem 1.5rem 1.5rem;
}

.patron-register__tabs {
    display: flex;
    gap: 0.35rem;
    padding: 0.35rem;
    margin-bottom: 1.25rem;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
}

.patron-register__tab {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 0.55rem 0.75rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: #475569;
    background: transparent;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    transition: background 0.15s, color 0.15s;
}

.patron-register__tab:hover {
    background: #fff;
    color: var(--brand-button-bg, #1f4ea7);
}

.patron-register__tab.is-active {
    background: var(--brand-button-bg, #1f4ea7);
    color: #fff;
    box-shadow: 0 2px 8px color-mix(in srgb, var(--brand-button-bg, #1f4ea7) 35%, transparent);
}

.patron-register__tab.is-active--staff {
    background: var(--brand-accent, #2e7d32);
    box-shadow: 0 2px 8px color-mix(in srgb, var(--brand-accent, #2e7d32) 35%, transparent);
}

.patron-register__panel {
    display: none;
}

.patron-register__panel.is-active {
    display: block;
}

.patron-register__alert {
    border-radius: 10px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.patron-register__submit {
    width: 100%;
    margin-top: 0.5rem;
    padding: 0.65rem 1rem;
    font-size: 0.95rem;
    font-weight: 700;
    border: none;
    border-radius: 10px;
    color: #fff;
    cursor: pointer;
}

.patron-register__submit--student {
    background: var(--brand-button-bg, #1f4ea7);
}

.patron-register__submit--student:hover {
    background: var(--brand-button-hover-bg, #2e7d32);
}

.patron-register__submit--staff {
    background: var(--brand-accent, #2e7d32);
}

.patron-register__submit--staff:hover {
    filter: brightness(0.92);
}

@media (max-width: 576px) {
    .patron-register {
        padding: 1rem 0.75rem 2rem;
    }

    .patron-register__card {
        padding: 1rem;
    }

    .patron-register__tabs {
        flex-direction: column;
    }
}