/* === Course Page Styles === */
/* Styly pro stránky kurzů a lekcí */

/* ========================================
   COURSE PAGE WRAPPER
   ======================================== */

.course-page {
    margin-top: 80px;
}

.course-header {
    padding: var(--space-2xl) 0;
    background: var(--gray-50);
}

.course-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-top: var(--space-md);
    font-size: 0.9375rem;
    color: var(--gray-500);
}

.course-lesson-number {
    color: var(--gold-600);
    font-weight: 600;
}

.course-duration {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.course-duration::before {
    content: "•";
    color: var(--gray-400);
}

/* ========================================
   VIDEO SECTION
   ======================================== */

.course-video-section {
    padding: var(--space-2xl) 0;
    background: var(--white);
}

.course-video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    background: var(--gray-100);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.course-video-wrapper iframe,
.course-video-wrapper video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.course-video-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    background: linear-gradient(135deg, var(--green-800), var(--green-900));
    color: var(--white);
}

.course-video-placeholder-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--green-100);
}

.course-video-play-btn {
    width: 80px;
    height: 80px;
    background: var(--gold-500);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(211, 158, 64, 0.4);
    border: none;
}

.course-video-play-btn:hover {
    transform: scale(1.1);
    background: var(--gold-600);
}

.course-video-play-btn svg {
    width: 32px;
    height: 32px;
    fill: var(--white);
    margin-left: 4px; /* Optická korekce pro play ikonu */
}

/* ========================================
   NEXT LESSON LINK (inline)
   ======================================== */

.course-next-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: var(--space-lg) 0;
    color: var(--gold-600);
    font-weight: 600;
    font-size: 1.0625rem;
    text-decoration: underline;
    text-underline-offset: 4px;
    transition: var(--transition);
}

.course-next-link:hover {
    color: var(--gold-500);
    text-decoration-thickness: 2px;
}

.course-next-link svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    transition: var(--transition);
}

.course-next-link:hover svg {
    transform: translateX(4px);
}

/* ========================================
   AUDIO PLAYER SECTION
   ======================================== */

.course-audio-section {
    padding: var(--space-xl) 0;
    background: var(--green-50);
}

.course-audio-label-wrapper {
    margin-bottom: var(--space-md);
}

.course-audio-section-label {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--green-800);
}

.course-audio-player {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-lg) var(--space-xl);
    background: var(--white);
    border-radius: var(--radius-xl);
    border: 2px solid var(--green-100);
    box-shadow: var(--shadow-sm);
}

.course-audio-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--gold-500), var(--gold-600));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    flex-shrink: 0;
}

.course-audio-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--white);
    fill: none;
}

.course-audio-content {
    flex: 1;
    min-width: 0;
}

.course-audio-title {
    display: block;
    font-weight: 700;
    color: var(--green-800);
    font-size: 1.0625rem;
    margin-bottom: 0.25rem;
}

.course-audio-duration {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.course-audio-controls {
    width: 100%;
    max-width: 280px;
    height: 40px;
    border-radius: var(--radius-md);
}

/* Custom audio player styling */
.course-audio-controls::-webkit-media-controls-panel {
    background: var(--green-50);
}

/* ========================================
   LESSON NAVIGATION (Prev/Next Cards)
   ======================================== */

.course-navigation {
    padding: var(--space-2xl) 0;
    background: var(--white);
    border-top: 1px solid var(--gray-100);
}

.course-nav-wrapper {
    display: flex;
    justify-content: space-between;
    gap: var(--space-lg);
}

.course-nav-link {
    flex: 1;
    padding: var(--space-lg);
    background: var(--green-50);
    border-radius: var(--radius-xl);
    border: 2px solid var(--green-100);
    transition: var(--transition);
    text-decoration: none;
    display: block;
}

.course-nav-link:hover {
    border-color: var(--gold-400);
    background: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.course-nav-prev {
    text-align: left;
}

.course-nav-next {
    text-align: right;
}

.course-nav-direction {
    display: block;
    font-size: 0.8125rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
}

.course-nav-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gold-600);
    line-height: 1.4;
}

.course-nav-link:hover .course-nav-title {
    color: var(--gold-500);
}

/* Spacer pro případ, kdy chybí jedna strana navigace */
.course-nav-spacer {
    flex: 1;
}

/* ========================================
   NEXT LESSON CARD (Featured)
   ======================================== */

.course-next-lesson {
    padding: var(--space-2xl) 0;
    background: var(--green-50);
}

.course-next-lesson-title {
    font-size: 1.5rem;
    color: var(--green-900);
    margin-bottom: var(--space-lg);
}

.course-next-card {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: var(--white);
    border-radius: var(--radius-xl);
    border: 2px solid var(--green-100);
    text-decoration: none;
    transition: var(--transition);
}

.course-next-card:hover {
    border-color: var(--gold-400);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.course-next-card-content {
    flex: 1;
}

.course-next-card-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--gold-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
}

.course-next-card-name {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--green-800);
    line-height: 1.4;
    transition: var(--transition);
}

.course-next-card:hover .course-next-card-name {
    color: var(--gold-600);
}

.course-next-card-arrow {
    width: 48px;
    height: 48px;
    background: var(--gold-500);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition);
}

.course-next-card:hover .course-next-card-arrow {
    background: var(--gold-600);
    transform: translateX(4px);
}

.course-next-card-arrow svg {
    width: 24px;
    height: 24px;
    stroke: var(--white);
}

/* ========================================
   EMAIL CTA SECTION
   ======================================== */

.course-email-cta {
    padding: var(--space-3xl) 0;
    background: linear-gradient(135deg, var(--green-900), var(--green-800));
}

.course-cta-card {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.course-cta-title {
    color: var(--white);
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    margin-bottom: var(--space-xl);
    line-height: 1.3;
}

.course-email-form {
    max-width: 500px;
    margin: 0 auto;
}

.course-form-row {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.course-form-row input[type="email"] {
    flex: 1;
    padding: 0.875rem var(--space-md);
    border: 2px solid var(--gold-400);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: var(--font-primary);
    background: var(--white);
    transition: var(--transition);
}

.course-form-row input[type="email"]::placeholder {
    color: var(--gray-400);
}

.course-form-row input[type="email"]:focus {
    outline: none;
    border-color: var(--gold-500);
    box-shadow: 0 0 0 3px rgba(211, 158, 64, 0.2);
}

.course-form-row .btn-primary {
    flex-shrink: 0;
    padding: 0.875rem 1.5rem;
}

.course-checkboxes {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    text-align: left;
}

.course-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    color: var(--green-100);
    font-size: 0.9375rem;
    cursor: pointer;
    line-height: 1.5;
}

.course-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    min-width: 20px;
    margin-top: 2px;
    accent-color: var(--gold-500);
    cursor: pointer;
    border-radius: var(--radius-sm);
}

.course-checkbox span {
    user-select: none;
}

.course-checkbox a {
    color: var(--gold-400);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.course-checkbox a:hover {
    color: var(--gold-300);
}

/* Main checkbox with expand functionality */
.course-checkbox-main {
    position: relative;
}

.course-checkbox-main .consent-expand-btn {
    background: none;
    border: none;
    padding: 0.25rem 0.5rem;
    margin-left: 0.25rem;
    cursor: pointer;
    color: var(--gold-400);
    font-size: 0.625rem;
    transition: var(--transition);
    vertical-align: middle;
}

.course-checkbox-main .consent-expand-btn:hover {
    color: var(--gold-300);
}

.course-checkbox-main.expanded .consent-expand-btn {
    transform: rotate(180deg);
}

/* Detailed consents (expandable) */
.course-checkboxes-detail {
    margin-top: var(--space-sm);
    padding-left: var(--space-lg);
    border-left: 2px solid var(--gold-400);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.course-checkboxes-detail .course-checkbox {
    font-size: 0.875rem;
    color: var(--green-200);
}

/* ========================================
   NEXT LESSON SECTION (Override article-row)
   ======================================== */

.course-page .related-articles .article-row {
    border: 2px solid var(--gold-400);
    border-radius: var(--radius-xl);
    padding: var(--space-lg) var(--space-xl);
    background: var(--white);
    transition: var(--transition);
}

.course-page .related-articles .article-row:hover {
    border-color: var(--gold-500);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    margin-left: 0;
    margin-right: 0;
    padding-left: var(--space-xl);
    padding-right: var(--space-xl);
}

.course-page .related-articles .article-row-arrow {
    opacity: 1;
    transform: translateX(0);
    width: 48px;
    height: 48px;
    background: var(--gold-500);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.course-page .related-articles .article-row-arrow svg {
    stroke: var(--white);
}

.course-page .related-articles .article-row:hover .article-row-arrow {
    background: var(--gold-600);
    transform: translateX(4px);
}

/* Form Success State */
.course-form-success {
    padding: var(--space-xl);
    text-align: center;
    color: var(--white);
}

.course-form-success svg {
    display: block;
    width: 64px;
    height: 64px;
    stroke: var(--gold-400);
    margin: 0 auto var(--space-md);
}

.course-form-success p {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

/* Form Error State */
.course-form-error {
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid rgba(220, 38, 38, 0.3);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-top: var(--space-md);
    color: #fca5a5;
    font-size: 0.9375rem;
    text-align: center;
}

/* ========================================
   RESPONSIVE STYLES
   ======================================== */

@media (max-width: 968px) {
    .course-header {
        padding: var(--space-xl) 0;
    }

    .course-video-section {
        padding: var(--space-xl) 0;
    }

    .course-audio-player {
        padding: var(--space-md) var(--space-lg);
    }

    .course-audio-controls {
        max-width: 200px;
    }
}

@media (max-width: 768px) {
    .course-nav-wrapper {
        flex-direction: column;
    }

    .course-nav-prev,
    .course-nav-next {
        text-align: left;
    }

    .course-audio-player {
        flex-direction: column;
        text-align: center;
        gap: var(--space-md);
    }

    .course-audio-content {
        text-align: center;
    }

    .course-audio-controls {
        width: 100%;
        max-width: 100%;
    }

    .course-form-row {
        flex-direction: column;
    }

    .course-form-row .btn-primary {
        width: 100%;
    }

    .course-next-card {
        flex-direction: column;
        text-align: center;
    }

    .course-next-card-arrow {
        margin-top: var(--space-md);
    }

    .course-email-cta {
        padding: var(--space-2xl) 0;
    }

    .course-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }

    .course-duration::before {
        display: none;
    }
}

@media (max-width: 480px) {
    .course-video-play-btn {
        width: 60px;
        height: 60px;
    }

    .course-video-play-btn svg {
        width: 24px;
        height: 24px;
    }

    .course-audio-icon {
        width: 48px;
        height: 48px;
    }

    .course-audio-icon svg {
        width: 24px;
        height: 24px;
    }

    .course-next-lesson {
        padding: var(--space-xl) 0;
    }

    .course-nav-link {
        padding: var(--space-md);
    }

    .course-cta-card {
        padding: 0 var(--space-sm);
    }

    .course-checkbox {
        font-size: 0.875rem;
    }

    .course-checkbox input[type="checkbox"] {
        width: 18px;
        height: 18px;
        min-width: 18px;
    }
}