/* LMS surfaces — uses paper theme tokens */
.auth-page,
.course-catalog,
.course-landing {
    max-width: 680px;
    margin: 0 auto;
    padding: 4.5rem 1.5rem 5rem;
}
.auth-page { text-align: center; }
.auth-page h1,
.course-hero h1,
.lesson-main h1 {
    font-weight: 500;
    letter-spacing: -0.015em;
    line-height: 1.08;
    font-size: clamp(30px, 5vw, 46px);
}
.auth-lead,
.course-hero p,
.lesson-dek {
    margin-top: 0.9rem;
    color: var(--color-muted);
    font-size: 17px;
    line-height: 1.65;
}
.auth-form {
    display: grid;
    gap: 1rem;
    max-width: 22rem;
    margin: 2rem auto 0;
    text-align: left;
}
.auth-form label { display: grid; gap: 0.35rem; }
.auth-form span {
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-muted);
}
.auth-form input {
    border: 1px solid var(--color-line);
    background: var(--color-paper);
    color: var(--color-ink);
    padding: 0.75rem 0.9rem;
    font-size: 15px;
}
.auth-form input:focus { outline: none; border-color: var(--color-accent); }
.auth-error { color: var(--color-accent); font-size: 14px; margin: 0; }
.auth-hint {
    margin-top: 2rem;
    color: var(--color-faint);
    font-size: 13px;
    line-height: 1.7;
}
.auth-hint code { font-size: 12px; }
.auth-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; justify-content: center; margin-top: 1.75rem; }
.member-badge {
    display: inline-block;
    margin: 1.25rem 0 0.75rem;
    border: 1px solid var(--color-line);
    padding: 0.4rem 0.8rem;
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-muted);
}
.member-badge.is-church { color: var(--color-accent); border-color: var(--color-accent); }

.lesson-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    font-size: 11px;
    background: var(--color-ink);
    color: var(--color-paper);
    padding: 0.85rem 1.4rem;
    border: 1px solid var(--color-ink);
    cursor: pointer;
    transition: background-color .15s, color .15s;
}
.lesson-btn:hover { background: var(--color-accent); border-color: var(--color-accent); }
.lesson-btn-ghost {
    background: transparent;
    color: var(--color-ink);
}
.lesson-btn-ghost:hover { color: var(--color-paper); }

.course-hero { text-align: center; margin-bottom: 2.5rem; }
.course-card {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 1.4rem;
    border: 1px solid var(--color-line);
    padding: 1rem;
    transition: border-color .15s;
}
.course-card:hover { border-color: var(--color-faint); }
.course-card-art { aspect-ratio: 4/3; overflow: hidden; }
.course-card-art img { width: 100%; height: 100%; object-fit: cover; }
.course-card-body h2 { font-size: 24px; font-weight: 500; margin: 0.35rem 0 0.5rem; }
.course-card-body p { color: var(--color-muted); font-size: 15.5px; line-height: 1.55; }
.course-card-go { display: inline-block; margin-top: 0.9rem; font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--color-accent); }

.lesson-index { list-style: none; margin: 0 auto 5rem; padding: 0 1.5rem; max-width: 680px; }
.lesson-index li + li { border-top: 1px solid var(--color-line); }
.lesson-row {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1.15rem 0;
}
.lesson-index-num {
    color: var(--color-faint);
    font-size: 11px;
    letter-spacing: 0.16em;
    min-width: 1.5rem;
    padding-top: 0.35rem;
}
.lesson-index-body { flex: 1; min-width: 0; }
.lesson-index-body strong { display: block; font-size: 20px; font-weight: 500; }
.lesson-index-body em { display: block; margin-top: 0.3rem; color: var(--color-muted); font-style: italic; font-size: 15px; }
.lesson-index-meta { color: var(--color-faint); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; white-space: nowrap; padding-top: 0.4rem; }

.lesson-layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 680px);
    justify-content: center;
    gap: 3rem;
    max-width: 1040px;
    margin: 0 auto;
    padding: 3.5rem 1.5rem 5rem;
}
.lesson-rail .eyebrow a { color: var(--color-muted); }
.lesson-rail .eyebrow a:hover { color: var(--color-ink); }
.lesson-side-list { list-style: none; margin: 1rem 0 0; padding: 0; }
.lesson-side-list a {
    display: flex;
    align-items: flex-start;
    gap: 0.4rem;
    padding: 0.55rem 0;
    border-top: 1px solid var(--color-line);
    color: var(--color-muted);
    font-size: 14.5px;
    line-height: 1.4;
}
.lesson-side-list a.is-current { color: var(--color-ink); }
.lesson-side-list a:hover { color: var(--color-ink); }
.lesson-lock {
    display: inline-block;
    width: 0.65rem;
    height: 0.65rem;
    margin-top: 0.3rem;
    border: 1.5px solid currentColor;
    border-radius: 2px 2px 1px 1px;
    position: relative;
    flex: 0 0 auto;
    opacity: 0.7;
}
.lesson-lock:before {
    content: "";
    position: absolute;
    left: 50%;
    top: -0.35rem;
    width: 0.38rem;
    height: 0.32rem;
    border: 1.5px solid currentColor;
    border-bottom: 0;
    border-radius: 0.3rem 0.3rem 0 0;
    transform: translateX(-50%);
}
.lesson-tick { color: var(--color-accent); margin-left: auto; font-size: 13px; }
.lesson-main h1 { margin-top: 0.4rem; }
.lesson-body { margin-top: 2rem; }
.lesson-body > p:first-child:first-letter { float: none; font-size: inherit; padding: 0; line-height: inherit; font-weight: inherit; }

.lesson-gate {
    border: 1px solid var(--color-line);
    background: var(--color-paper-2);
    padding: 2rem 1.5rem;
    text-align: center;
    margin: 2rem 0;
}
.lesson-gate h2 { font-size: 26px; font-weight: 500; margin: 0.4rem 0 0.7rem; }
.lesson-gate p { color: var(--color-muted); font-size: 16px; line-height: 1.6; }
.lesson-gate .lesson-btn { margin-top: 1.2rem; }
.lesson-gate-note { font-size: 14px !important; }

.pdf-viewer {
    margin: 2rem 0;
    border: 1px solid var(--color-line);
}
.pdf-viewer iframe {
    width: 100%;
    height: min(70vh, 720px);
    border: 0;
    background: var(--color-paper-2);
}
.pdf-viewer-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.7rem 1rem;
    border-top: 1px solid var(--color-line);
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}
.pdf-viewer-bar a { color: var(--color-accent); }

.quiz-block {
    margin: 2.6rem 0 1rem;
    border-top: 1px solid var(--color-line);
    padding-top: 2rem;
}
.quiz-block h2 { font-size: 27px; font-weight: 500; margin: 0 0 0.6rem; }
.quiz-intro { color: var(--color-muted); font-size: 16px; line-height: 1.65; margin-bottom: 1.6rem; }
.quiz-q { margin: 0 0 1.6rem; }
.quiz-q legend,
.quiz-q .quiz-prompt {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 0.7rem;
    display: block;
}
.quiz-choice {
    display: flex;
    gap: 0.65rem;
    align-items: flex-start;
    margin: 0.4rem 0;
    color: var(--color-ink);
    font-size: 16px;
    line-height: 1.45;
}
.quiz-q textarea {
    width: 100%;
    min-height: 8rem;
    border: 1px solid var(--color-line);
    background: var(--color-paper);
    color: var(--color-ink);
    padding: 0.8rem;
    font: inherit;
    font-size: 16px;
    line-height: 1.55;
}
.quiz-q textarea:focus { outline: none; border-color: var(--color-accent); }
.quiz-feedback {
    margin-top: 1.8rem;
    display: grid;
    gap: 1.1rem;
}
.quiz-review-summary {
    border: 1px solid var(--color-line);
    background: var(--color-paper-2);
    padding: 1.3rem 1.2rem;
}
.quiz-review-summary h3 { font-size: 22px; font-weight: 500; margin: 0 0 0.4rem; }
.quiz-review-summary p { font-size: 15.5px; color: var(--color-muted); line-height: 1.55; }
.quiz-review {
    border: 1px solid var(--color-line);
    padding: 1.2rem 1.15rem 1.3rem;
    background: var(--color-paper);
}
.quiz-review header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 0.55rem;
}
.quiz-review-mark {
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-muted);
    white-space: nowrap;
}
.quiz-review.is-right .quiz-review-mark { color: var(--color-accent); }
.quiz-review h3 {
    font-size: 18px;
    font-weight: 500;
    line-height: 1.4;
    margin: 0 0 0.85rem;
}
.quiz-review-given {
    font-size: 15.5px;
    line-height: 1.55;
    color: var(--color-ink);
    margin: 0 0 0.9rem;
    padding: 0.7rem 0.8rem;
    background: var(--color-paper-2);
    white-space: pre-wrap;
}
.quiz-review-given span {
    display: block;
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: 0.35rem;
}
.quiz-review-note { font-size: 16px; line-height: 1.65; margin: 0 0 0.85rem; }
.quiz-review h4 {
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin: 0.8rem 0 0.35rem;
    font-weight: 500;
}
.quiz-review ul { margin: 0 0 0.4rem; padding-left: 1.15rem; }
.quiz-review li { margin: 0.28rem 0; font-size: 15.5px; line-height: 1.5; }
.quiz-status { margin-top: 0.8rem; font-size: 14px; color: var(--color-muted); }

.lesson-body .kg-embed-card iframe {
    width: 100%;
    aspect-ratio: 16/9;
    height: auto;
    min-height: 220px;
}

@media (max-width: 800px) {
    .lesson-layout { grid-template-columns: 1fr; gap: 1.5rem; padding-top: 2rem; }
    .course-card { grid-template-columns: 1fr; }
    .lesson-rail { order: 2; }
    .lesson-main { order: 1; }
}