/* =====================================================
   EduPlay — style.css
   ETAPA 1 — Fundação
   ===================================================== */

:root {
    --color-header-bg: #14161f;
    --color-header-text: #f5f5f7;
    --color-bg: #f7f7fb;
    --color-text: #1c1d21;
    --color-muted: #6b6f76;
    --color-primary: #4f46e5;
    --color-primary-dark: #4338ca;
    --color-card-bg: #ffffff;
    --color-border: #e6e6ec;
    --radius: 14px;
    --max-width: 1180px;
    --shadow: 0 6px 20px rgba(20, 22, 31, 0.06);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
}

img {
    max-width: 100%;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ------------------------- Header ------------------------- */
.site-header {
    background: var(--color-header-bg);
    color: var(--color-header-text);
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-header-text);
    letter-spacing: 0.5px;
}

.main-nav {
    display: flex;
    gap: 28px;
}

.main-nav a {
    color: var(--color-header-text);
    font-size: 0.95rem;
    opacity: 0.9;
    transition: opacity 0.15s ease;
}

.main-nav a:hover {
    opacity: 1;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-header-text);
    display: block;
}

/* ------------------------- Hero ------------------------- */
.hero {
    background: linear-gradient(135deg, #1c1e2b, #14161f);
    color: #fff;
    padding: 90px 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.6rem;
    margin: 0 0 14px;
}

.hero p {
    font-size: 1.1rem;
    color: #cfcfd8;
    margin: 0 0 30px;
}

/* ------------------------- Buttons ------------------------- */
.btn {
    display: inline-block;
    padding: 12px 26px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: transform 0.15s ease, background 0.15s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

.btn-outline {
    border-color: var(--color-primary);
    color: var(--color-primary);
    width: 100%;
    text-align: center;
    margin-top: 14px;
}

.btn-outline:hover {
    background: var(--color-primary);
    color: #fff;
}

/* ------------------------- Sections ------------------------- */
.section {
    padding: 60px 0;
}

.section-title {
    font-size: 1.6rem;
    margin-bottom: 26px;
}

/* ------------------------- Categories ------------------------- */
.categories-section {
    background: #fff;
}

.categories-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.category-pill {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    padding: 10px 20px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background 0.15s ease, color 0.15s ease;
}

.category-pill:hover {
    background: var(--color-primary);
    color: #fff;
}

/* ------------------------- Course Cards ------------------------- */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.course-card {
    background: var(--color-card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--color-border);
}

.course-card-image {
    aspect-ratio: 16 / 9;
    background: #e9e9f0;
    overflow: hidden;
}

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

.course-card-body {
    padding: 18px 20px 22px;
}

.course-category {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.5px;
}

.course-title {
    font-size: 1.1rem;
    margin: 8px 0 4px;
}

.course-teacher {
    margin: 0;
    color: var(--color-muted);
    font-size: 0.9rem;
}

.course-meta {
    margin-top: 10px;
    font-size: 0.82rem;
    color: var(--color-muted);
}

/* ------------------------- Footer ------------------------- */
.site-footer {
    background: var(--color-header-bg);
    color: #b8b8c2;
    padding: 26px 0;
    text-align: center;
    font-size: 0.85rem;
}

/* ------------------------- Flash messages ------------------------- */
.flash-container {
    padding-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.alert {
    padding: 12px 18px;
    border-radius: 10px;
    font-size: 0.92rem;
    border: 1px solid transparent;
}

.alert-success {
    background: #eafaf1;
    color: #1e7e4b;
    border-color: #c5eed9;
}

.alert-error {
    background: #fdecec;
    color: #c0392b;
    border-color: #f8caca;
}

.alert-info {
    background: #eef2ff;
    color: #4338ca;
    border-color: #dbe1ff;
    word-break: break-all;
}

/* ------------------------- Auth forms (login/cadastro/senha) ------------------------- */
.auth-section {
    padding: 60px 0 90px;
}

.auth-card {
    max-width: 420px;
    margin: 0 auto;
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 36px 32px;
}

.auth-title {
    margin: 0 0 6px;
    font-size: 1.5rem;
}

.auth-subtitle {
    margin: 0 0 26px;
    color: var(--color-muted);
    font-size: 0.92rem;
}

.auth-form {
    display: flex;
    flex-direction: column;
}

.auth-form label {
    font-size: 0.85rem;
    font-weight: 600;
    margin: 14px 0 6px;
}

.auth-form input {
    padding: 11px 14px;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    font-size: 0.95rem;
    background: var(--color-bg);
}

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

.btn-block {
    width: 100%;
    text-align: center;
    border: none;
    cursor: pointer;
    margin-top: 24px;
}

.auth-footer-text {
    text-align: center;
    font-size: 0.88rem;
    color: var(--color-muted);
    margin-top: 18px;
}

.auth-footer-text a {
    color: var(--color-primary);
    font-weight: 600;
}

/* ------------------------- Área do aluno (Minha Conta) ------------------------- */
.account-section {
    padding-top: 50px;
}

.account-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 36px;
    gap: 16px;
    flex-wrap: wrap;
}

.account-title {
    margin: 0 0 4px;
}

.account-subtitle {
    margin: 0;
    color: var(--color-muted);
}

.btn-inline {
    width: auto;
    margin-top: 0;
    padding: 10px 22px;
}

.empty-state {
    background: #fff;
    border: 1px dashed var(--color-border);
    border-radius: var(--radius);
    padding: 50px 20px;
    text-align: center;
    color: var(--color-muted);
}

.empty-state p {
    margin: 0 0 18px;
}

/* ------------------------- Page headers (listagens) ------------------------- */
.page-header-section {
    background: #fff;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--color-border);
}

.page-title {
    margin: 0 0 6px;
    font-size: 1.8rem;
}

.page-subtitle {
    margin: 0 0 20px;
    color: var(--color-muted);
}

.text-muted {
    color: var(--color-muted);
}

.category-count {
    opacity: 0.7;
    font-size: 0.8em;
}

/* ------------------------- Busca / filtros ------------------------- */
.search-filter-form {
    display: flex;
    gap: 10px;
    max-width: 520px;
    margin-bottom: 20px;
}

.search-filter-form input[type="text"] {
    flex: 1;
    padding: 11px 16px;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    font-size: 0.95rem;
}

.search-filter-form input[type="text"]:focus {
    outline: none;
    border-color: var(--color-primary);
}

.search-filter-form .btn {
    border: none;
    cursor: pointer;
}

.filter-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.category-pill.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* ------------------------- Categorias (página /categorias) ------------------------- */
.category-cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.category-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}

.category-card h3 {
    margin: 0 0 8px;
}

.category-card p {
    margin: 0 0 14px;
    color: var(--color-muted);
    font-size: 0.9rem;
}

.category-card-count {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-primary);
}

/* ------------------------- Página do curso ------------------------- */
.course-hero {
    background: #fff;
    border-bottom: 1px solid var(--color-border);
}

.course-hero-inner {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
    align-items: center;
}

.course-hero-image {
    border-radius: var(--radius);
    overflow: hidden;
    aspect-ratio: 16 / 9;
    background: #e9e9f0;
}

.course-hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.course-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}

.course-page-title {
    margin: 0 0 14px;
    font-size: 1.9rem;
}

.course-description {
    color: var(--color-muted);
    margin: 0 0 18px;
}

.course-facts {
    list-style: none;
    padding: 0;
    margin: 0 0 22px;
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    font-size: 0.9rem;
    color: var(--color-muted);
}

/* ------------------------- Lista de aulas ------------------------- */
.lessons-section {
    background: var(--color-bg);
}

.lesson-list {
    list-style: none;
    padding: 0;
    margin: 0;
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}

.lesson-list-item a {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 20px;
    border-bottom: 1px solid var(--color-border);
    transition: background 0.15s ease;
}

.lesson-list-item:last-child a {
    border-bottom: none;
}

.lesson-list-item a:hover {
    background: var(--color-bg);
}

.lesson-list-item.active a {
    background: #eef2ff;
}

.lesson-number {
    font-weight: 700;
    color: var(--color-primary);
    width: 26px;
}

.lesson-name {
    flex: 1;
    font-size: 0.95rem;
}

.lesson-duration {
    font-size: 0.82rem;
    color: var(--color-muted);
}

/* ------------------------- Página da aula ------------------------- */
.lesson-layout {
    display: grid;
    grid-template-columns: 2.2fr 1fr;
    gap: 34px;
    align-items: start;
}

.video-player-placeholder {
    aspect-ratio: 16 / 9;
    background: #14161f;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #cfcfd8;
}

.video-placeholder-inner {
    text-align: center;
    padding: 20px;
}

.video-placeholder-inner span {
    font-size: 2.2rem;
    display: block;
    margin-bottom: 10px;
    opacity: 0.6;
}

.video-placeholder-id {
    font-size: 0.78rem;
    opacity: 0.7;
    margin-top: 8px;
}

.lesson-info {
    margin-top: 22px;
}

.lesson-breadcrumb a {
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: 600;
}

.lesson-title {
    margin: 8px 0 10px;
    font-size: 1.5rem;
}

.lesson-description {
    color: var(--color-muted);
}

.lesson-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 24px;
    gap: 14px;
}

.lesson-course-complete {
    font-size: 0.9rem;
    color: var(--color-muted);
    font-weight: 600;
}

.lesson-sidebar-title {
    font-size: 1.1rem;
    margin: 0 0 14px;
}

/* ------------------------- Paginação ------------------------- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
}

.pagination-link {
    font-weight: 600;
    color: var(--color-primary);
}

.pagination-status {
    font-size: 0.88rem;
    color: var(--color-muted);
}

/* ------------------------- 404 ------------------------- */
.error-404 {
    text-align: center;
    padding: 60px 0;
}

.error-404 h1 {
    font-size: 4rem;
    margin: 0;
    color: var(--color-primary);
}

/* ------------------------- Responsive ------------------------- */
@media (max-width: 1024px) {
    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .category-cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .course-hero-inner {
        grid-template-columns: 1fr;
    }

    .lesson-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .main-nav {
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        background: var(--color-header-bg);
        flex-direction: column;
        padding: 10px 20px 20px;
        display: none;
        gap: 14px;
    }

    .main-nav.open {
        display: flex;
    }

    .mobile-toggle {
        display: flex;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .courses-grid {
        grid-template-columns: 1fr;
    }

    .category-cards-grid {
        grid-template-columns: 1fr;
    }

    .search-filter-form {
        flex-direction: column;
    }

    .lesson-nav {
        flex-direction: column;
        align-items: stretch;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 60px 0;
    }

    .section {
        padding: 40px 0;
    }

    .auth-card {
        padding: 28px 22px;
    }

    .account-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* =====================================================
   ETAPA 4 — Player, progresso e conclusão
   ===================================================== */

/* Player 16:9 responsivo (Bunny iframe ou <video>) */
.player-shell {
    position: relative;
}

.player-frame {
    position: relative;
    aspect-ratio: 16 / 9;
    background: #000;
    border-radius: var(--radius);
    overflow: hidden;
}

.player-frame iframe,
.player-frame video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
    background: #000;
}

.resume-notice {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px 16px;
    margin-top: 12px;
    padding: 10px 16px;
    background: #eef2ff;
    border-radius: 10px;
    font-size: 0.9rem;
}

.resume-notice[hidden],
.lesson-complete-box[hidden],
.lesson-complete-box [hidden],
.badge-completed[hidden] {
    display: none;
}

.link-button {
    background: none;
    border: 0;
    padding: 0;
    color: var(--color-primary);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    text-decoration: underline;
}

/* Mensagem "Aula concluída!" */
.lesson-complete-box {
    margin-top: 18px;
    padding: 20px 22px;
    background: #ecfdf3;
    border: 1px solid #b7ebc9;
    border-radius: var(--radius);
    animation: eduplay-pop 0.25s ease-out;
}

.lesson-complete-box p {
    margin: 0 0 12px;
}

.lesson-complete-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: #127a3d;
}

@keyframes eduplay-pop {
    from { transform: translateY(6px); opacity: 0; }
    to   { transform: none; opacity: 1; }
}

.badge-completed {
    display: inline-block;
    vertical-align: middle;
    margin-left: 8px;
    padding: 3px 10px;
    font-size: 0.75rem;
    font-weight: 700;
    color: #127a3d;
    background: #ecfdf3;
    border: 1px solid #b7ebc9;
    border-radius: 999px;
}

/* Barra de progresso do curso */
.course-progress {
    margin: 0 0 20px;
}

.progress-bar {
    height: 10px;
    background: var(--color-border);
    border-radius: 999px;
    overflow: hidden;
}

.progress-bar-fill {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), #22c55e);
    border-radius: 999px;
    transition: width 0.4s ease;
}

.progress-label {
    margin: 6px 0 0;
    font-size: 0.85rem;
    color: var(--color-muted);
}

.course-progress-compact {
    margin-bottom: 14px;
}

.course-progress-compact .progress-bar {
    height: 6px;
}

.course-resume-hint {
    margin: 10px 0 0;
    font-size: 0.88rem;
    color: var(--color-muted);
}

.course-resume-hint a {
    color: var(--color-primary);
    font-weight: 600;
}

/* Status das aulas na lista */
.lesson-status {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 2px solid var(--color-border);
    font-size: 0.75rem;
    font-weight: 700;
}

.lesson-list-item.is-completed .lesson-status {
    background: #22c55e;
    border-color: #22c55e;
    color: #fff;
}

.lesson-list-item.active a {
    box-shadow: inset 3px 0 0 var(--color-primary);
}

.lesson-list-item.active .lesson-name {
    font-weight: 600;
}

.lesson-partial {
    display: block;
    font-size: 0.75rem;
    color: var(--color-primary);
}

/* Minha Conta — estatísticas e cards de progresso */
.account-stats {
    list-style: none;
    padding: 0;
    margin: 0 0 36px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.account-stats li {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 18px 20px;
    color: var(--color-muted);
    font-size: 0.9rem;
}

.account-stats strong {
    display: block;
    font-size: 1.6rem;
    color: var(--color-text);
}

.account-group-title {
    margin: 0 0 16px;
    font-size: 1.05rem;
    color: var(--color-muted);
}

.progress-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
    margin-bottom: 40px;
}

.progress-card {
    display: grid;
    grid-template-columns: 200px 1fr;
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.progress-card-image {
    background: #e9e9f0;
}

.progress-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.progress-card-body {
    padding: 18px 20px;
}

.progress-card-title {
    margin: 4px 0 12px;
    font-size: 1.05rem;
}

.progress-card .course-progress {
    margin-bottom: 10px;
}

.progress-card-last {
    margin: 0 0 14px;
    font-size: 0.85rem;
    color: var(--color-muted);
}

.btn-small {
    padding: 9px 20px;
    font-size: 0.88rem;
}

@media (max-width: 1024px) {
    .progress-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    /* No celular o player ocupa a largura toda da tela */
    .lesson-page {
        padding-top: 0;
    }

    .lesson-page .lesson-layout {
        padding: 0;
    }

    .lesson-page .player-frame {
        border-radius: 0;
    }

    .lesson-page .resume-notice,
    .lesson-page .lesson-complete-box,
    .lesson-page .lesson-info,
    .lesson-page .lesson-nav,
    .lesson-page .lesson-sidebar {
        margin-left: 16px;
        margin-right: 16px;
    }

    .lesson-page .lesson-nav .btn {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .account-stats {
        grid-template-columns: 1fr;
    }

    .account-stats li {
        display: flex;
        align-items: baseline;
        gap: 10px;
    }

    .account-stats strong {
        display: inline;
        font-size: 1.3rem;
    }

    .progress-card {
        grid-template-columns: 1fr;
    }

    .progress-card-image {
        aspect-ratio: 16 / 9;
    }

    .lesson-list-item a {
        padding: 12px 14px;
        gap: 10px;
    }
}

/* =====================================================
   ETAPA 6 — Revisão final
   ===================================================== */

/* Botões <button> herdam a tipografia e o cursor dos links .btn */
.btn {
    font-family: inherit;
    cursor: pointer;
    line-height: 1.3;
}

.btn-outline {
    background: transparent;
}

/* "Sair" do menu: formulário POST com aparência de link */
.main-nav {
    align-items: center;
}

.nav-logout {
    margin: 0;
    display: inline-flex;
}

.nav-logout button {
    background: none;
    border: 0;
    padding: 0;
    font: inherit;
    font-size: 0.95rem;
    color: var(--color-header-text);
    opacity: 0.9;
    cursor: pointer;
}

.nav-logout button:hover {
    opacity: 1;
}

/* Foco visível para quem navega pelo teclado */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid rgba(79, 70, 229, 0.55);
    outline-offset: 2px;
}

/* Link "Pular para o conteúdo" (acessibilidade): aparece só ao focar com Tab */
.skip-link {
    position: absolute;
    left: 12px;
    top: -60px;
    z-index: 100;
    background: #fff;
    color: var(--color-text);
    padding: 10px 16px;
    border-radius: 8px;
    font-weight: 600;
    transition: top 0.15s ease;
}

.skip-link:focus {
    top: 12px;
}

/* Faixa de pré-visualização (admin vendo curso em rascunho) */
.preview-banner {
    background: #fff4e0;
    color: #7a4500;
    border-bottom: 1px solid #f3d9a8;
    padding: 12px 0;
    font-size: 0.9rem;
}

.preview-banner a {
    color: #7a4500;
    font-weight: 700;
    text-decoration: underline;
    margin-left: 6px;
}

/* Textos longos (títulos/e-mails) não estouram a largura no celular */
.course-title,
.course-page-title,
.lesson-title,
.account-subtitle,
.progress-card-title {
    overflow-wrap: anywhere;
}

@media (max-width: 768px) {
    .main-nav {
        align-items: flex-start;
    }

    .main-nav .nav-logout button {
        text-align: left;
    }
}

/* Respeita quem prefere menos animação (configuração do sistema) */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* =====================================================
   ETAPA 9 — Módulos na lista de aulas
   ===================================================== */
.module-groups {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.module-group {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}

.module-group > summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 18px;
    cursor: pointer;
    list-style: none;
    user-select: none;
}

.module-group > summary::-webkit-details-marker {
    display: none;
}

.module-group > summary::after {
    content: '';
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--color-muted);
    border-bottom: 2px solid var(--color-muted);
    transform: rotate(45deg);
    flex-shrink: 0;
    margin-left: 4px;
    transition: transform 0.15s ease;
}

.module-group[open] > summary::after {
    transform: rotate(-135deg);
}

.module-group[open] > summary {
    border-bottom: 1px solid var(--color-border);
}

.module-title {
    display: flex;
    flex-direction: column;
    font-weight: 700;
    min-width: 0;
    overflow-wrap: anywhere;
}

.module-title small {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-primary);
}

.module-meta {
    margin-left: auto;
    font-size: 0.82rem;
    color: var(--color-muted);
    white-space: nowrap;
}

.module-group.is-completed .module-title small::after {
    content: ' ✓ concluído';
    color: #16a34a;
}

.module-group .lesson-list {
    margin: 0;
    padding: 8px;
}

@media (max-width: 480px) {
    .module-group > summary {
        padding: 12px 14px;
        flex-wrap: wrap;
    }

    .module-meta {
        margin-left: 0;
        width: 100%;
        order: 3;
    }
}

/* Dentro do cartão do módulo, a lista não precisa da própria moldura */
.module-group .lesson-list {
    border: 0;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
}

/* =====================================================
   ETAPA 11 — Botão "Continuar com o Google"
   (padrão visual do Google: fundo branco, borda cinza, "G" colorido)
   ===================================================== */
.btn-google {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 100%;
    min-height: 46px;
    padding: 10px 16px;
    background: #fff;
    color: #1f1f1f;
    border: 1px solid #747775;
    border-radius: 999px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.15s ease, box-shadow 0.15s ease;
}

.btn-google:hover {
    background: #f7f8f8;
    box-shadow: 0 1px 3px rgba(60, 64, 67, 0.25);
    text-decoration: none;
}

.btn-google-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 18px 0;
    color: var(--color-muted);
    font-size: 0.85rem;
}

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