/* ===== CATALOGO PUBLICO DE CURSOS RENDERIZADO NO SERVIDOR (AB#244) =====
   Paginas do host (Components/Pages/Courses: CatalogoDeCursos.razor e CursoDoCatalogo.razor), dentro do PublicLayout, e
   so o documento das paginas estaticas carrega este arquivo. Sem MudBlazor: botoes e avisos reaproveitam as classes de
   home-customization.css e public-account.css, icones sao HomeIcon, e as cores leem as --mud-palette-* do tema da
   casa. O visual e o do catalogo do WASM, cujas regras continuam em courses.css para as telas do painel
   (/meus-estudos): as duas copias andam juntas quando o visual mudar. */

.course-page {
    --course-radius: 24px;
    --course-radius-sm: 16px;
    --course-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
    --course-shadow-hover: 0 26px 54px rgba(15, 23, 42, 0.16);
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding-bottom: 3rem;
}

.course-page--presentation {
    max-width: 1100px;
}

.course-page--narrow {
    max-width: 760px;
    padding-top: 2rem;
}

/* ===== CABECALHO ===== */

.course-hero {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.9rem 2.1rem;
    border: 1px solid rgba(var(--mud-palette-primary-rgb), 0.16);
    border-radius: var(--course-radius);
    background: radial-gradient(circle at 100% 0%, rgba(var(--mud-palette-secondary-rgb), 0.16), transparent 55%), linear-gradient(135deg, rgba(var(--mud-palette-primary-rgb), 0.14) 0%, rgba(var(--mud-palette-primary-rgb), 0.04) 100%), var(--mud-palette-surface);
    box-shadow: var(--course-shadow);
}

.course-hero__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 68px;
    height: 68px;
    border-radius: 20px;
    background: linear-gradient(140deg, var(--mud-palette-primary) 0%, var(--mud-palette-primary-darken) 100%);
    color: var(--mud-palette-primary-text);
    box-shadow: 0 12px 26px rgba(var(--mud-palette-primary-rgb), 0.32);
}

.course-hero__text {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    min-width: 0;
}

.course-hero__eyebrow {
    color: var(--mud-palette-primary);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.course-hero__title {
    color: var(--mud-palette-text-primary);
    font-size: clamp(1.7rem, 3.2vw, 2.35rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.course-hero__subtitle {
    color: var(--mud-palette-text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* ===== FILTROS ===== */

.course-toolbar {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.6rem;
}

.course-search {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    max-width: 640px;
}

.course-search__field {
    position: relative;
    flex: 1 1 16rem;
    min-width: 0;
}

.course-search__icon {
    position: absolute;
    top: 50%;
    left: 0.75rem;
    color: var(--mud-palette-text-secondary);
    transform: translateY(-50%);
    pointer-events: none;
}

/* 16px no campo: abaixo disso o Safari do iPhone da zoom na pagina ao focar. */
.course-search__input {
    width: 100%;
    min-height: 44px;
    padding: 0.5rem 0.75rem 0.5rem 2.75rem;
    border: 1px solid var(--mud-palette-lines-inputs);
    border-radius: 4px;
    background-color: var(--mud-palette-surface);
    color: var(--mud-palette-text-primary);
    font: inherit;
    font-size: 1rem;
}

    .course-search__input:hover {
        border-color: var(--mud-palette-action-default);
    }

    .course-search__input:focus-visible {
        outline: 2px solid var(--mud-palette-primary);
        outline-offset: -1px;
        border-color: var(--mud-palette-primary);
    }

/* O <button> nao herda a fonte da pagina como o <a>. */
.course-search__submit {
    min-height: 44px;
    font-family: inherit;
    cursor: pointer;
}

.course-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.course-chip {
    display: inline-flex;
    align-items: center;
    padding: 0.42rem 0.95rem;
    border: 1px solid var(--mud-palette-lines-default);
    border-radius: 999px;
    background: var(--mud-palette-surface);
    color: var(--mud-palette-text-secondary);
    font-size: 0.82rem;
    font-weight: 600;
    white-space: nowrap;
    transition: background-color .2s ease, border-color .2s ease, color .2s ease;
}

    .course-chip:hover {
        border-color: rgba(var(--mud-palette-primary-rgb), 0.45);
        color: var(--mud-palette-primary);
    }

    .course-chip:focus-visible {
        outline: 2px solid var(--mud-palette-primary);
        outline-offset: 2px;
    }

    .course-chip.is-active {
        border-color: var(--mud-palette-primary);
        background: var(--mud-palette-primary);
        color: var(--mud-palette-primary-text);
    }

/* ===== GRADE DE CURSOS ===== */

.course-results {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    margin: 1.9rem 0 1rem;
}

.course-results__title {
    color: var(--mud-palette-text-primary);
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.course-results__count {
    color: var(--mud-palette-text-secondary);
    font-size: 0.85rem;
    white-space: nowrap;
}

.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(270px, 100%), 1fr));
    gap: 1.35rem;
}

.course-card {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--mud-palette-lines-default);
    border-radius: var(--course-radius);
    background: var(--mud-palette-surface);
    box-shadow: var(--course-shadow);
    color: inherit;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

    .course-card:hover,
    .course-card:focus-visible {
        transform: translateY(-4px);
        border-color: rgba(var(--mud-palette-primary-rgb), 0.4);
        box-shadow: var(--course-shadow-hover);
    }

    .course-card:focus-visible {
        outline: 2px solid var(--mud-palette-primary);
        outline-offset: 2px;
    }

.course-card__media {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: radial-gradient(circle at 50% 35%, rgba(var(--mud-palette-primary-rgb), 0.07), transparent 62%), var(--mud-palette-background-gray);
}

    .course-card__media img {
        width: 100%;
        height: 100%;
        display: block;
        object-fit: cover;
        transition: transform .3s ease;
    }

.course-card:hover .course-card__media img {
    transform: scale(1.05);
}

.course-card__placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: rgba(var(--mud-palette-primary-rgb), 0.45);
}

.course-card__body {
    display: flex;
    flex: 1 1 auto;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.1rem 1.15rem 1.2rem;
}

.course-card__categories {
    overflow: hidden;
    color: var(--mud-palette-primary);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-overflow: ellipsis;
    text-transform: uppercase;
    white-space: nowrap;
}

.course-card__title {
    display: -webkit-box;
    overflow: hidden;
    color: var(--mud-palette-text-primary);
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: -0.01em;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow-wrap: anywhere;
}

.course-card__price {
    color: var(--mud-palette-primary);
    font-size: 0.8rem;
    font-weight: 600;
}

.course-card__summary {
    display: -webkit-box;
    overflow: hidden;
    color: var(--mud-palette-text-secondary);
    font-size: 0.85rem;
    line-height: 1.5;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

.course-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-top: auto;
    padding-top: 0.9rem;
    color: var(--mud-palette-text-secondary);
    font-size: 0.78rem;
    font-weight: 600;
}

.course-card__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.15rem;
    color: var(--mud-palette-primary);
    font-size: 0.85rem;
    font-weight: 700;
    white-space: nowrap;
}

    .course-card__cta .home-icon {
        transition: transform .2s ease;
    }

.course-card:hover .course-card__cta .home-icon {
    transform: translateX(3px);
}

/* ===== ESTADOS ===== */

.course-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    padding: 3.2rem 1.5rem;
    border: 1px dashed var(--mud-palette-lines-default);
    border-radius: var(--course-radius);
    background: var(--mud-palette-surface);
    text-align: center;
}

.course-empty__icon {
    color: rgba(var(--mud-palette-primary-rgb), 0.45);
}

.course-empty__title {
    color: var(--mud-palette-text-primary);
    font-size: 1.25rem;
    font-weight: 500;
    line-height: 1.6;
}

.course-empty__text {
    max-width: 48ch;
    margin-bottom: 0.5rem;
    color: var(--mud-palette-text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

.course-empty__actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
}

/* ===== PAGINA DE APRESENTACAO ===== */

.course-back {
    margin-bottom: 1rem;
}

.course-presentation__header {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    padding: 1.9rem 2.1rem;
    border: 1px solid rgba(var(--mud-palette-primary-rgb), 0.16);
    border-radius: var(--course-radius);
    background: radial-gradient(circle at 100% 0%, rgba(var(--mud-palette-secondary-rgb), 0.16), transparent 55%), linear-gradient(135deg, rgba(var(--mud-palette-primary-rgb), 0.14) 0%, rgba(var(--mud-palette-primary-rgb), 0.04) 100%), var(--mud-palette-surface);
    box-shadow: var(--course-shadow);
}

.course-presentation__title {
    color: var(--mud-palette-text-primary);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    overflow-wrap: anywhere;
}

.course-presentation__summary {
    color: var(--mud-palette-text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

.course-presentation__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1.1rem;
    color: var(--mud-palette-text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
}

.course-presentation__meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.course-presentation__body {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 1.35rem;
    margin-top: 1.5rem;
    align-items: start;
}

.course-panel {
    padding: 1.5rem 1.6rem;
    border: 1px solid var(--mud-palette-lines-default);
    border-radius: var(--course-radius);
    background: var(--mud-palette-surface);
    box-shadow: var(--course-shadow);
}

.course-panel__title {
    margin-bottom: 0.9rem;
    color: var(--mud-palette-text-primary);
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.course-panel__title--spaced {
    margin-top: 1.5rem;
}

.course-presentation__media {
    margin-bottom: 1rem;
}

.course-presentation__cover {
    width: 100%;
    aspect-ratio: 16 / 9;
    display: block;
    overflow: hidden;
    border-radius: 20px;
    object-fit: cover;
}

.course-presentation__description {
    color: var(--mud-palette-text-secondary);
    font-size: 0.95rem;
    line-height: 1.65;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.course-syllabus {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.course-syllabus__module {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    padding: 1rem 1.1rem;
    border: 1px solid var(--mud-palette-lines-default);
    border-radius: var(--course-radius-sm);
    background: var(--mud-palette-background-gray);
}

.course-syllabus__module-title {
    color: var(--mud-palette-text-primary);
    font-size: 0.98rem;
    font-weight: 700;
}

.course-syllabus__module-description {
    color: var(--mud-palette-text-secondary);
    font-size: 0.85rem;
    line-height: 1.5;
}

.course-syllabus__lessons {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-top: 0.3rem;
    list-style: none;
}

.course-syllabus__lesson {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.45rem 0;
    border-top: 1px solid var(--mud-palette-divider);
    color: var(--mud-palette-text-primary);
    font-size: 0.88rem;
}

.course-syllabus__lesson-title {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    min-width: 0;
    overflow-wrap: anywhere;
}

    .course-syllabus__lesson-title .home-icon {
        flex: 0 0 auto;
    }

.course-syllabus__lesson-duration {
    flex: 0 0 auto;
    color: var(--mud-palette-text-secondary);
    font-size: 0.78rem;
    font-weight: 600;
    white-space: nowrap;
}

.course-cta {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.course-cta__button {
    justify-content: center;
    width: 100%;
}

.course-cta__hint {
    color: var(--mud-palette-text-secondary);
    font-size: 0.85rem;
    line-height: 1.5;
}

/* ===== RESPONSIVO ===== */

@media (max-width: 960px) {
    .course-presentation__body {
        grid-template-columns: minmax(0, 1fr);
    }

    .course-presentation__aside {
        order: 1;
    }

    .course-presentation__main {
        order: 2;
    }
}

@media (max-width: 600px) {
    .course-hero {
        flex-direction: column;
        align-items: flex-start;
        padding: 1.4rem 1.3rem;
    }

    .course-search__submit {
        flex: 1 1 auto;
    }

    .course-presentation__header {
        padding: 1.4rem 1.3rem;
    }

    .course-panel {
        padding: 1.2rem 1.1rem;
    }
}