/* ==========================================================================
   Sign in / Create account
   Shared by both pages so the browser caches one file instead of two
   inline style blocks. Plain CSS: these are server-rendered pages, there is
   no interactive circuit to save anything by scoping it.
   ========================================================================== */

.auth-wrap {
    display: flex;
    justify-content: center;
    padding: 3rem 1rem 4rem;
    background: var(--bg);
    min-height: calc(100vh - 52px); /* minus the nav bar */
}

.auth-card {
    width: 100%;
    max-width: 400px;
}

.auth-head {
    margin-bottom: 1.75rem;
}

.auth-brand-link {
    display: inline-flex;
    align-items: center;
    margin-bottom: 0.875rem;
    text-decoration: none;
}

.auth-brand-logo {
    height: 30px;
    width: auto;
    display: block;
    object-fit: contain;
}

.auth-back-logo {
    height: 20px;
    width: auto;
    display: inline-block;
    vertical-align: middle;
    object-fit: contain;
    opacity: 0.85;
    transition: opacity var(--t);
}

.auth-back:hover .auth-back-logo {
    opacity: 1;
}

.auth-eyebrow {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.625rem;
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.auth-sub {
    font-size: 0.9375rem;
    color: var(--text-mid);
    line-height: 1.55;
    margin: 0;
}

.auth-notice {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    background: var(--danger-dim);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
    padding: 0.6875rem 0.875rem;
    border-radius: var(--r-sm);
    margin-bottom: 1.25rem;
    font-size: 0.8125rem;
    line-height: 1.45;
}

.auth-notice i {
    margin-top: 1px;
    flex-shrink: 0;
}

.auth-field {
    margin-bottom: 1.125rem;
}

.auth-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-mid);
    margin-bottom: 0.4375rem;
}

.auth-input {
    width: 100%;
    padding: 0.6875rem 0.8125rem;
    background: var(--surface);
    border: 1px solid var(--border-mid);
    border-radius: var(--r);
    color: var(--text);
    font-size: 0.9375rem;
    font-family: inherit;
    transition: border-color var(--t);
}

.auth-input::placeholder {
    color: var(--text-faint);
}

.auth-input:focus {
    outline: none;
    border-color: var(--accent);
}

.auth-hint {
    font-size: 0.75rem;
    color: var(--text-faint);
    margin-top: 0.4375rem;
    line-height: 1.4;
}

.auth-btn {
    width: 100%;
    padding: 0.75rem;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--r);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--t);
    font-family: inherit;
}

.auth-btn:hover {
    background: var(--accent-hover);
}

.auth-alt {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-mid);
}

.auth-alt a {
    color: var(--accent);
    font-weight: 600;
    text-decoration: none;
}

.auth-alt a:hover {
    text-decoration: underline;
}

.auth-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 1.25rem 0;
    color: var(--text-faint);
    font-size: 0.8125rem;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border);
}

.auth-divider span {
    padding: 0 0.75rem;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.btn-google {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.75rem 1rem;
    background: #ffffff;
    color: #3c4043;
    border: 1px solid #dadce0;
    border-radius: var(--r);
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 1px 2px rgba(60, 64, 67, 0.08);
    transition: background-color 0.2s, box-shadow 0.2s, border-color 0.2s;
    font-family: inherit;
    box-sizing: border-box;
}

.btn-google:hover {
    background-color: #f8f9fa;
    border-color: #c6c9ce;
    box-shadow: 0 1px 3px rgba(60, 64, 67, 0.15);
    color: #202124;
    text-decoration: none;
}

/* A lecturer arriving from a shared class link must not be pushed through a
   sign-up form. This is the way back out. */
.auth-back {
    display: block;
    text-align: center;
    margin-top: 1.25rem;
    font-size: 0.8125rem;
    color: var(--text-faint);
    text-decoration: none;
}

.auth-back:hover {
    color: var(--text-mid);
}

@media (max-width: 480px) {
    .auth-wrap {
        padding: 2rem 1.25rem 3rem;
    }

    .auth-title {
        font-size: 1.375rem;
    }
}