.caa-login-required,
.caa-student-area {
    color: #172026;
    font-family: inherit;
}

.caa-login-required {
    max-width: 520px;
    margin: 32px auto;
    padding: 24px;
    border: 1px solid #d8dee4;
    border-radius: 8px;
    background: #fff;
}

.caa-auth {
    display: grid;
    grid-template-columns: minmax(0, 440px);
    justify-content: center;
    gap: 18px;
    max-width: 520px;
    margin: 28px auto;
}

.caa-auth-message {
    grid-column: 1 / -1;
    padding: 12px 14px;
    border: 1px solid #f0c36d;
    border-radius: 6px;
    background: #fff8e5;
    color: #6f4d12;
    font-weight: 700;
}

.caa-auth-box,
.caa-no-access {
    padding: 22px;
    border: 1px solid #d8dee4;
    border-radius: 8px;
    background: #fff;
}

.caa-auth-box h2,
.caa-no-access h2 {
    margin: 0 0 14px;
    font-size: 1.35rem;
    line-height: 1.2;
    letter-spacing: 0;
}

.caa-auth-box p {
    margin: 0 0 14px;
}

.caa-auth-box label {
    display: block;
    margin-bottom: 6px;
    color: #53606b;
    font-weight: 700;
}

.caa-auth-box input {
    width: 100%;
    min-height: 42px;
    padding: 9px 11px;
    border: 1px solid #b8c2cc;
    border-radius: 6px;
    background: #fff;
    color: #172026;
}

.caa-auth-box input[type="checkbox"] {
    width: auto;
    min-height: 0;
    margin-right: 6px;
}

.caa-remember label {
    display: inline-flex;
    align-items: center;
    margin: 0;
    color: #172026;
}

.caa-auth-link {
    margin-top: 14px;
}

.caa-auth-link a {
    color: #26736b;
    font-weight: 700;
}

.caa-no-access {
    max-width: 640px;
    margin: 32px auto;
}

.caa-course-slider {
    display: grid;
    grid-auto-columns: minmax(240px, 320px);
    grid-auto-flow: column;
    gap: 16px;
    overflow-x: auto;
    padding: 4px 2px 16px;
    scroll-snap-type: x mandatory;
    scrollbar-width: thin;
}

.caa-course-card {
    min-height: 220px;
    overflow: hidden;
    border: 1px solid #d8dee4;
    border-radius: 8px;
    background: #fff;
    scroll-snap-align: start;
}

.caa-course-card-image {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #eef1f4;
}

.caa-course-card-image img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.caa-course-card-body {
    padding: 16px;
}

.caa-course-card h3 {
    margin: 0 0 8px;
    font-size: 1.12rem;
    line-height: 1.25;
    letter-spacing: 0;
}

.caa-course-card p {
    margin: 0;
    color: #53606b;
    line-height: 1.55;
}

.caa-student-area {
    display: grid;
    grid-template-columns: minmax(240px, 300px) minmax(0, 1fr);
    gap: 28px;
    align-items: start;
}

.caa-sidebar {
    position: sticky;
    top: 24px;
    padding: 18px;
    border: 1px solid #d8dee4;
    border-radius: 8px;
    background: #f8fafc;
}

.caa-sidebar h2 {
    margin: 0 0 18px;
    font-size: 1.05rem;
    line-height: 1.3;
}

.caa-topic + .caa-topic {
    margin-top: 18px;
}

.caa-topic h3 {
    margin: 0 0 8px;
    color: #53606b;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: uppercase;
}

.caa-topic ol {
    display: grid;
    gap: 6px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.caa-topic li a,
.caa-topic li span {
    display: block;
    min-height: 42px;
    padding: 10px 12px;
    border: 1px solid transparent;
    border-radius: 6px;
    color: #24313a;
    line-height: 1.25;
    text-decoration: none;
    word-break: break-word;
}

.caa-topic li a:hover,
.caa-topic li.is-active a {
    border-color: #26736b;
    background: #e8f5f2;
    color: #103d38;
}

.caa-topic li.is-done a::before,
.caa-topic li.is-done span::before {
    content: "✓ ";
    color: #26736b;
    font-weight: 700;
}

.caa-topic li.is-locked span {
    color: #8a949e;
    background: #eef1f4;
}

.caa-topic li.is-locked span::before {
    content: "• ";
}

.caa-lesson {
    min-width: 0;
}

.caa-video,
.caa-video-empty {
    width: 100%;
    overflow: hidden;
    border-radius: 8px;
    background: #101820;
}

.caa-video {
    aspect-ratio: 16 / 9;
}

.caa-video iframe,
.caa-video embed,
.caa-video object,
.caa-video video {
    width: 100%;
    height: 100%;
    border: 0;
}

.caa-video-empty {
    display: grid;
    min-height: 260px;
    place-items: center;
    color: #fff;
}

.caa-lesson h1 {
    margin: 22px 0 14px;
    font-size: clamp(1.65rem, 2.2vw, 2.25rem);
    line-height: 1.15;
    letter-spacing: 0;
}

.caa-lesson-content {
    font-size: 1rem;
    line-height: 1.7;
}

.caa-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
}

.caa-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 16px;
    border: 1px solid #26736b;
    border-radius: 6px;
    background: #26736b;
    color: #fff;
    font-weight: 700;
    line-height: 1.2;
    text-decoration: none;
    cursor: pointer;
}

.caa-button:hover,
.caa-button:focus {
    background: #1f5f59;
    color: #fff;
}

.caa-button:disabled {
    border-color: #9db7b2;
    background: #9db7b2;
    cursor: default;
}

.caa-download {
    border-color: #40566b;
    background: #40566b;
}

.caa-download:hover,
.caa-download:focus {
    background: #314253;
}

.caa-next {
    margin-top: 18px;
}

.caa-locked,
.caa-finished {
    display: inline-block;
    padding: 10px 0;
    color: #53606b;
    font-weight: 700;
}

@media (max-width: 760px) {
    .caa-auth,
    .caa-student-area {
        grid-template-columns: 1fr;
    }

    .caa-sidebar {
        position: static;
    }
}