/* Shared homepage chrome (auth, preview, footer). Layout CSS stays separate. */

body.hp,
body.hp *,
body.hp *::before,
body.hp *::after {
    box-sizing: border-box;
}
body.hp {
    overflow-x: hidden;
    max-width: 100%;
}

[hidden] { display: none !important; }

.hp-skip-link {
    position: absolute;
    left: .75rem;
    top: .75rem;
    z-index: 100000;
    padding: .65rem 1rem;
    border-radius: .75rem;
    background: #111827;
    color: #f8fafc;
    text-decoration: none;
    font-weight: 700;
    transform: translateY(-160%);
    transition: transform .15s ease;
}
.hp-skip-link:focus,
.hp-skip-link:focus-visible {
    transform: translateY(0);
    outline: 3px solid #93c5fd;
    outline-offset: 2px;
}
.hp-main-anchor {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
}

body.hp :focus-visible {
    outline: 2px solid #5161ce;
    outline-offset: 2px;
}

.hp-preview-banner {
    position: sticky;
    top: 0;
    z-index: 80;
    display: flex;
    flex-wrap: wrap;
    gap: .5rem 1rem;
    align-items: center;
    padding: .7rem 4.75rem .7rem 1.1rem;
    background: #111827;
    color: #f8fafc;
    font-size: .9rem;
}
.hp-preview-banner a { color: #93c5fd; }

.hp-auth-modal .hp-auth-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(8, 12, 24, .62);
    z-index: 10040;
}
.hp-auth-modal .hp-auth-panel {
    position: fixed;
    z-index: 10050;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: min(420px, calc(100vw - 1.5rem));
    max-width: calc(100vw - 1.5rem);
    max-height: calc(100vh - 2rem);
    overflow-x: hidden;
    overflow-y: auto;
    background: #fff;
    color: #172033;
    border-radius: 22px;
    padding: 1.4rem 1.3rem 1.2rem;
    box-shadow: 0 24px 70px rgba(0,0,0,.28);
}
.hp-auth-inline .hp-auth-panel {
    max-width: 440px;
    margin: 1.5rem auto;
    background: #fff;
    color: #172033;
    border-radius: 22px;
    padding: 1.4rem;
}
.hp-auth-panel h2 { margin: 0 0 .25rem; font-size: 1.35rem; overflow-wrap: anywhere; }
.hp-auth-panel p { margin: 0 0 1rem; color: #65718a; overflow-wrap: anywhere; }
.hp-auth-panel input[type="hidden"] {
    display: none;
    width: auto;
    min-height: 0;
    padding: 0;
    border: 0;
}
.hp-auth-panel label { display: block; font-size: .82rem; font-weight: 700; margin: .7rem 0 .3rem; }
.hp-auth-panel input {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    min-height: 46px;
    border: 1px solid #dbe1ee;
    border-radius: 12px;
    padding: 0 .85rem;
    font: inherit;
}
.hp-auth-panel button[type="submit"] {
    width: 100%;
    max-width: 100%;
    min-height: 48px;
    margin-top: 1rem;
    padding: .7rem .9rem;
    border: 0;
    border-radius: 12px;
    background: #5161ce;
    color: #fff;
    font-weight: 700;
    cursor: pointer;
    white-space: normal;
    line-height: 1.25;
}
.hp-auth-panel button[type="submit"][disabled],
.hp-auth-panel button[type="submit"].is-busy {
    opacity: .72;
    cursor: wait;
}
.hp-auth-panel .hp-btn-ghost {
    background: transparent;
    color: #5161ce;
    border: 1px solid #dbe1ee;
}
.hp-auth-roles {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: .4rem;
    margin: 0 0 1rem;
    padding: .3rem;
    border-radius: 14px;
    background: #f1f4fb;
}
.hp-auth-role {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .2rem;
    min-height: 52px;
    border: 0;
    border-radius: 11px;
    background: transparent;
    color: #5b6784;
    font: inherit;
    font-size: .78rem;
    font-weight: 700;
    cursor: pointer;
    padding: .35rem .25rem;
}
.hp-auth-role i { font-size: .95rem; }
.hp-auth-role.is-active {
    background: #fff;
    color: #3948aa;
    box-shadow: 0 6px 16px rgba(57, 72, 170, .12);
}
.hp-auth-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    border-radius: 16px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #5161ce, #3948aa);
    color: #fff;
    font-size: 1.3rem;
}
.hp-auth-icon-parent {
    background: linear-gradient(135deg, #0f7a4d, #0b5c3a);
}
.hp-auth-close {
    position: absolute;
    top: .7rem;
    right: .8rem;
    border: 0;
    background: transparent;
    font-size: 1.6rem;
    cursor: pointer;
    color: #65718a;
}
.hp-auth-alert, .hp-auth-ok {
    padding: .75rem .9rem;
    border-radius: 12px;
    margin-bottom: 1rem;
}
.hp-auth-alert { background: rgba(220,76,100,.1); color: #dc4c64; }
.hp-auth-ok { background: rgba(22,163,106,.1); color: #0f7a4d; }
.hp-auth-links {
    text-align: center;
    margin-top: .9rem;
    font-size: .9rem;
    overflow-wrap: anywhere;
    word-break: break-word;
    max-width: 100%;
}
.hp-auth-links a { color: #5161ce; display: inline; }
.hp-teacher-rank {
    display: block;
    margin-top: .2rem;
    font-size: .78rem;
    font-weight: 600;
    color: inherit;
    opacity: .78;
    overflow-wrap: anywhere;
}
.hp-avatar-fallback {
    display: inline-grid;
    place-items: center;
    color: #fff;
    font-weight: 800;
}
.hp-site-footer {
    padding: 2rem 1.2rem;
    background: #0f172a;
    color: #e2e8f0;
}
.hp-site-footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    gap: 1.5rem 2rem;
    flex-wrap: wrap;
}
.hp-site-footer-inner.hp-footer-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.2fr) minmax(12rem, .85fr);
    align-items: start;
}
.hp-footer-map {
    min-width: 0;
}
.hp-footer-map iframe {
    display: block;
    width: 100%;
    height: 220px;
    border: 0;
    border-radius: 14px;
    background: #0f172a;
}
.hp-site-footer p { margin: .35rem 0 0; color: #94a3b8; font-size: .92rem; }
.hp-site-footer .hp-footer-address { white-space: pre-line; }
.hp-site-footer nav { display: flex; flex-wrap: wrap; gap: .75rem 1rem; max-width: 28rem; }
.hp-site-footer a { color: #cbd5e1; text-decoration: none; }
.hp-site-footer a:hover { color: #fff; }
@media (max-width: 900px) {
    .hp-site-footer-inner.hp-footer-grid {
        grid-template-columns: 1fr;
    }
    .hp-footer-map iframe { height: 240px; }
}
body.hp-l3 .hp-site-footer { padding-bottom: 6.5rem; }

[data-reveal] {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity .6s ease, transform .6s ease;
}
[data-reveal].is-in {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    [data-reveal] { opacity: 1; transform: none; transition: none; }
}

@media (max-width: 720px) {
    .hp-auth-modal .hp-auth-panel {
        width: calc(100vw - 1rem);
        border-radius: 18px 18px 0 0;
        top: auto;
        bottom: 0;
        left: 50%;
        transform: translate(-50%, 0);
        max-height: 92vh;
    }
}