/* =========================================================================
   Cogna LMS v2 — Design system do front (UI inspirada no Tutor LMS)
   Tokens via CSS custom properties definidos na página Aparência.
   ========================================================================= */

.cogna-lms {
    font-family: var(--cogna-font, inherit);
    font-size: var(--cogna-font-size, 16px);
    color: var(--cogna-text, #212327);
    line-height: 1.6;
}

.cogna-lms *,
.cogna-lms *::before,
.cogna-lms *::after {
    box-sizing: border-box;
}

.cogna-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

.cogna-muted {
    color: var(--cogna-muted, #757c8e);
}

/* --------------------------------------------------------------------------
   Botões
   -------------------------------------------------------------------------- */

.cogna-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 22px;
    border-radius: var(--cogna-radius, 8px);
    border: 1px solid transparent;
    font-weight: 600;
    font-size: 0.95em;
    line-height: 1.2;
    cursor: pointer;
    text-decoration: none !important;
    transition: filter 0.15s ease, background 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.cogna-btn-primary {
    background: var(--cogna-primary, #3e64de);
    color: #fff !important;
}

.cogna-btn-primary:hover {
    filter: brightness(0.92);
    color: #fff !important;
    box-shadow: 0 6px 16px rgba(62, 100, 222, 0.3);
    transform: translateY(-1px);
}

.cogna-btn-success {
    background: var(--cogna-success, #24a148);
    color: #fff !important;
}

.cogna-btn-outline {
    background: transparent;
    border-color: var(--cogna-primary, #3e64de);
    color: var(--cogna-primary, #3e64de) !important;
}

.cogna-btn-outline:hover {
    background: var(--cogna-primary-soft, rgba(62, 100, 222, 0.1));
}

.cogna-btn-block {
    display: flex;
    width: 100%;
}

.cogna-btn[disabled] {
    opacity: 0.6;
    cursor: not-allowed;
}

/* --------------------------------------------------------------------------
   Cards e notices
   -------------------------------------------------------------------------- */

.cogna-card {
    background: var(--cogna-surface, #fff);
    border: 1px solid rgba(0, 0, 0, 0.07);
    border-radius: var(--cogna-radius, 10px);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.cogna-notice {
    border-radius: var(--cogna-radius, 10px);
    padding: 14px 18px;
    margin-bottom: 20px;
    font-weight: 500;
}

.cogna-notice-warning {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fcd34d;
}

.cogna-notice-success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #86efac;
}

/* --------------------------------------------------------------------------
   Hero do curso / archive
   -------------------------------------------------------------------------- */

.cogna-course-hero {
    background: linear-gradient(135deg, var(--cogna-secondary, #212327) 0%, color-mix(in srgb, var(--cogna-secondary, #212327) 78%, var(--cogna-primary, #3e64de)) 100%);
    color: #fff;
    padding: 48px 0;
    margin-bottom: 32px;
}

.cogna-course-hero-breadcrumb {
    font-size: 0.85em;
    opacity: 0.75;
    margin: 0 0 12px;
}

.cogna-course-hero-breadcrumb a {
    color: #fff;
    text-decoration: none;
}

.cogna-course-hero-title {
    font-size: 2.1em;
    font-weight: 800;
    margin: 0 0 10px;
    color: #fff;
}

.cogna-course-hero-excerpt {
    font-size: 1.05em;
    opacity: 0.85;
    max-width: 680px;
    margin: 0 0 16px;
}

.cogna-course-hero-meta {
    display: flex;
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 0.95em;
    opacity: 0.9;
}

/* --------------------------------------------------------------------------
   Layout da página do curso
   -------------------------------------------------------------------------- */

.cogna-course-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 32px;
    align-items: start;
    padding-bottom: 56px;
}

.cogna-course-cta {
    padding: 0;
    overflow: hidden;
    position: sticky;
    top: 32px;
}

.cogna-course-cta-thumb img {
    width: 100%;
    height: auto;
    display: block;
}

.cogna-course-cta-body {
    padding: 20px;
}

.cogna-course-done {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    color: var(--cogna-success, #24a148);
    margin-bottom: 12px;
}

.cogna-check {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--cogna-success, #24a148);
    color: #fff;
    font-size: 14px;
}

/* --------------------------------------------------------------------------
   Abas
   -------------------------------------------------------------------------- */

.cogna-tabs-nav {
    display: flex;
    gap: 4px;
    border-bottom: 2px solid rgba(0, 0, 0, 0.08);
    margin-bottom: 24px;
}

.cogna-tabs-nav button {
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    padding: 12px 18px;
    font: inherit;
    font-weight: 600;
    color: var(--cogna-muted, #757c8e);
    cursor: pointer;
}

.cogna-tabs-nav button.is-active {
    color: var(--cogna-primary, #3e64de);
    border-bottom-color: var(--cogna-primary, #3e64de);
}

.cogna-tab-panel {
    display: none;
}

.cogna-tab-panel.is-active {
    display: block;
}

/* --------------------------------------------------------------------------
   Barra de progresso
   -------------------------------------------------------------------------- */

.cogna-progress {
    margin-bottom: 16px;
}

.cogna-progress-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85em;
    color: var(--cogna-muted, #757c8e);
    margin-bottom: 6px;
}

.cogna-progress-track {
    height: 8px;
    border-radius: 99px;
    background: rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

.cogna-progress-fill {
    height: 100%;
    border-radius: 99px;
    background: var(--cogna-primary, #3e64de);
    transition: width 0.3s ease;
}

/* --------------------------------------------------------------------------
   Currículo (accordion)
   -------------------------------------------------------------------------- */

.cogna-curriculum-section {
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--cogna-radius, 10px);
    margin-bottom: 12px;
    background: var(--cogna-surface, #fff);
    overflow: hidden;
}

.cogna-curriculum-section summary {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    cursor: pointer;
    font-weight: 700;
    background: rgba(0, 0, 0, 0.02);
    list-style: none;
    transition: background 0.15s ease;
}

.cogna-curriculum-section summary:hover {
    background: var(--cogna-primary-soft, rgba(62, 100, 222, 0.06));
}

.cogna-curriculum-section summary::-webkit-details-marker {
    display: none;
}

.cogna-curriculum-section summary::after {
    content: "";
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--cogna-muted, #757c8e);
    border-bottom: 2px solid var(--cogna-muted, #757c8e);
    transform: rotate(45deg);
    transition: transform 0.15s ease;
    flex-shrink: 0;
    margin-bottom: 3px;
}

.cogna-curriculum-section[open] summary::after {
    transform: rotate(-135deg);
    margin-bottom: -3px;
}

.cogna-curriculum-section-title {
    flex: 1;
}

.cogna-curriculum-section-count {
    font-size: 0.8em;
    font-weight: 500;
    color: var(--cogna-muted, #757c8e);
}

.cogna-curriculum-items {
    list-style: none;
    margin: 0;
    padding: 0;
}

.cogna-curriculum-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 18px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.cogna-curriculum-item-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    font-size: 12px;
    flex-shrink: 0;
    background: var(--cogna-primary-soft, rgba(62, 100, 222, 0.1));
    color: var(--cogna-primary, #3e64de);
}

.cogna-curriculum-item.is-completed .cogna-curriculum-item-icon {
    background: var(--cogna-success, #24a148);
    color: #fff;
}

.cogna-curriculum-item.is-locked {
    opacity: 0.6;
}

.cogna-curriculum-item.is-active {
    background: var(--cogna-primary-soft, rgba(62, 100, 222, 0.08));
}

.cogna-curriculum-item.is-active .cogna-curriculum-item-title {
    font-weight: 700;
}

.cogna-curriculum-item-title {
    color: inherit;
    text-decoration: none;
    flex: 1;
}

.cogna-curriculum-item-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.cogna-curriculum-item-hint {
    font-size: 0.75em;
    color: var(--cogna-muted, #757c8e);
    line-height: 1.3;
}

a.cogna-curriculum-item-title:hover {
    color: var(--cogna-primary, #3e64de);
}

.cogna-curriculum-item-badge {
    font-size: 0.7em;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--cogna-primary-soft, rgba(62, 100, 222, 0.1));
    color: var(--cogna-primary, #3e64de);
    border-radius: 99px;
    padding: 2px 10px;
}

/* --------------------------------------------------------------------------
   Materiais e campos custom
   -------------------------------------------------------------------------- */

.cogna-materials h3 {
    margin: 0 0 12px;
    font-size: 1.05em;
}

.cogna-materials ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.cogna-materials li {
    margin-bottom: 8px;
}

.cogna-materials a {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--cogna-primary, #3e64de);
    font-weight: 500;
}

.cogna-custom-fields {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--cogna-border, #e8ecf3);
}

.cogna-custom-fields-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.cogna-custom-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.cogna-custom-field-label {
    font-size: 0.85em;
    font-weight: 600;
    color: var(--cogna-muted, #757c8e);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.cogna-custom-field-value {
    font-size: 1em;
    color: var(--cogna-text, #1a1d26);
    line-height: 1.5;
}

.cogna-custom-field-value a {
    color: var(--cogna-primary, #3e64de);
    text-decoration: none;
    word-break: break-word;
}

.cogna-custom-field-value a:hover {
    text-decoration: underline;
}

.cogna-meta-list {
    list-style: none;
    margin: 16px 0;
    padding: 16px;
    background: rgba(0, 0, 0, 0.025);
    border-radius: var(--cogna-radius, 10px);
}

.cogna-meta-list li {
    margin-bottom: 6px;
}

.cogna-meta-label {
    color: var(--cogna-muted, #757c8e);
}

/* --------------------------------------------------------------------------
   Player de aula (spotlight)
   -------------------------------------------------------------------------- */

.cogna-player {
    background: var(--cogna-bg, #f6f8fb);
    min-height: 100vh;
}

.cogna-player-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    background: var(--cogna-secondary, #212327);
    color: #fff;
    padding: 10px 16px;
    min-height: 56px;
    position: sticky;
    top: 0;
    z-index: 50;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.18);
}

.cogna-player-topbar-left,
.cogna-player-topbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.cogna-player-topbar-left {
    flex: 1;
    min-width: 0;
}

.cogna-player-topbar-right {
    flex-shrink: 0;
}

.cogna-player-topbar-divider {
    width: 1px;
    height: 24px;
    background: rgba(255, 255, 255, 0.14);
    flex-shrink: 0;
}

.cogna-player-sidebar-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    width: 38px;
    height: 38px;
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.15s ease, border-color 0.15s ease;
}

.cogna-player-sidebar-toggle:hover {
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.18);
}

.cogna-player-course-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #fff !important;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95em;
    min-width: 0;
    padding: 6px 4px;
    border-radius: 8px;
    transition: background 0.15s ease;
}

.cogna-player-course-link:hover {
    background: rgba(255, 255, 255, 0.06);
    color: #fff !important;
}

.cogna-player-course-back {
    flex-shrink: 0;
    opacity: 0.75;
}

.cogna-player-course-title {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cogna-player-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px 8px 6px 14px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
}

.cogna-player-progress {
    min-width: 0;
}

.cogna-player-progress .cogna-progress {
    margin: 0;
}

.cogna-progress--topbar {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.8125rem;
    line-height: 1;
    color: rgba(255, 255, 255, 0.82);
}

.cogna-progress--topbar .cogna-progress-count {
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: #fff;
    letter-spacing: 0.02em;
}

.cogna-progress--topbar .cogna-progress-label {
    color: rgba(255, 255, 255, 0.55);
    white-space: nowrap;
}

.cogna-progress--topbar .cogna-progress-track {
    width: 72px;
    height: 5px;
    background: rgba(255, 255, 255, 0.14);
    flex-shrink: 0;
}

.cogna-progress--topbar .cogna-progress-fill {
    background: linear-gradient(90deg, var(--cogna-success, #24a148), #3ddc84);
    box-shadow: 0 0 8px rgba(36, 161, 72, 0.45);
}

.cogna-progress--topbar .cogna-progress-percent {
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: #fff;
    min-width: 2.5em;
    text-align: right;
}

.cogna-player-topbar .cogna-btn-complete,
.cogna-player-topbar #concluir-aula {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: var(--cogna-success, #24a148);
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 9px 16px;
    font-weight: 600;
    font-size: 0.875rem;
    line-height: 1.2;
    cursor: pointer;
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(36, 161, 72, 0.35);
    transition: filter 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.cogna-player-topbar .cogna-btn-complete:not([disabled]):not(.is-done):hover,
.cogna-player-topbar #concluir-aula:not([disabled]):hover {
    filter: brightness(1.06);
    box-shadow: 0 4px 14px rgba(36, 161, 72, 0.45);
    transform: translateY(-1px);
}

.cogna-player-topbar .cogna-btn-complete[disabled],
.cogna-player-topbar .cogna-btn-complete.is-done,
.cogna-player-topbar #concluir-aula[disabled] {
    background: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.65);
    box-shadow: none;
    cursor: default;
    transform: none;
}

.cogna-player-layout {
    display: grid;
    grid-template-columns: 340px 1fr;
    min-height: calc(100vh - 60px);
}

.cogna-player-sidebar {
    background: var(--cogna-surface, #fff);
    border-right: 1px solid rgba(0, 0, 0, 0.08);
    padding: 20px;
    overflow-y: auto;
    max-height: calc(100vh - 60px);
    position: sticky;
    top: 60px;
}

.cogna-player-sidebar.is-hidden {
    display: none;
}

.cogna-player-layout.sidebar-hidden {
    grid-template-columns: 1fr;
}

.cogna-player-sidebar-title {
    font-size: 1em;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--cogna-muted, #757c8e);
    margin: 0 0 16px;
}

.cogna-player-main {
    padding: 32px;
    max-width: 920px;
    width: 100%;
    margin: 0 auto;
}

.cogna-player-title {
    font-size: 1.7em;
    font-weight: 800;
    margin: 0 0 20px;
}

.cogna-player-video {
    position: relative;
    padding-bottom: 56.25%;
    border-radius: var(--cogna-radius, 10px);
    overflow: hidden;
    background: #000;
    margin-bottom: 24px;
}

.cogna-player-video iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.cogna-player-nav {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin: 40px 0;
    flex-wrap: wrap;
}

.cogna-player-qa,
.cogna-player-discussion {
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    padding-top: 32px;
    margin-top: 40px;
}

.cogna-player-discussion h2 {
    margin: 0 0 20px;
}

.cogna-discussion-thread {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
}

.cogna-discussion-empty,
.cogna-discussion-login,
.cogna-discussion-blocked {
    color: rgba(0, 0, 0, 0.6);
    margin: 0 0 16px;
}

.cogna-discussion-post {
    margin-left: calc(var(--cogna-discussion-depth, 0) * 24px);
    padding: 16px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--cogna-radius, 10px);
    background: var(--cogna-surface, #fff);
}

.cogna-discussion-post-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.cogna-discussion-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.cogna-discussion-author {
    display: block;
}

.cogna-discussion-date {
    display: block;
    font-size: 0.85em;
    color: rgba(0, 0, 0, 0.55);
}

.cogna-discussion-content {
    white-space: pre-wrap;
    line-height: 1.6;
}

.cogna-discussion-reply-btn {
    margin-top: 10px;
    background: none;
    border: none;
    padding: 0;
    color: var(--cogna-primary, #1e40af);
    cursor: pointer;
    font-size: 0.9em;
}

.cogna-discussion-replies {
    margin-top: 12px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cogna-discussion-form textarea {
    width: 100%;
    margin-bottom: 12px;
    padding: 12px;
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: var(--cogna-radius, 10px);
    font: inherit;
    resize: vertical;
}

.cogna-discussion-replying {
    margin: 0 0 10px;
    font-size: 0.9em;
}

.cogna-discussion-replying button {
    margin-left: 8px;
    background: none;
    border: none;
    padding: 0;
    color: var(--cogna-primary, #1e40af);
    cursor: pointer;
}

/* --------------------------------------------------------------------------
   Quiz
   -------------------------------------------------------------------------- */

.cogna-quiz-info {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    background: var(--cogna-surface, #fff);
    border: 1px solid rgba(0, 0, 0, 0.07);
    border-radius: var(--cogna-radius, 10px);
    padding: 14px 18px;
    margin-bottom: 24px;
    font-size: 0.9em;
}

.cogna-quiz-passed {
    color: var(--cogna-success, #24a148);
    font-weight: 700;
}

.cogna-quiz-question-front {
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--cogna-radius, 10px);
    background: var(--cogna-surface, #fff);
    padding: 20px;
    margin-bottom: 16px;
}

.cogna-quiz-question-front legend {
    font-weight: 700;
    padding: 0 4px;
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.cogna-quiz-question-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--cogna-primary, #3e64de);
    color: #fff;
    font-size: 13px;
    flex-shrink: 0;
}

.cogna-quiz-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: calc(var(--cogna-radius, 10px) - 4px);
    margin-top: 8px;
    cursor: pointer;
    transition: background 0.15s ease;
}

.cogna-quiz-option:hover {
    background: var(--cogna-primary-soft, rgba(62, 100, 222, 0.06));
}

.cogna-quiz-result {
    border-radius: var(--cogna-radius, 10px);
    padding: 24px;
    margin: 24px 0;
    text-align: center;
    font-size: 1.05em;
}

.cogna-quiz-result.is-passed {
    background: #dcfce7;
    border: 1px solid #86efac;
    color: #166534;
}

.cogna-quiz-result.is-failed {
    background: #fee2e2;
    border: 1px solid #fca5a5;
    color: #991b1b;
}

.cogna-quiz-result-score {
    font-size: 2.4em;
    font-weight: 800;
    display: block;
}

/* --------------------------------------------------------------------------
   Grid de cursos (archive e dashboard)
   -------------------------------------------------------------------------- */

.cogna-course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    margin: 24px 0 48px;
}

.cogna-course-grid--cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.cogna-course-grid--cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cogna-course-grid--cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.cogna-favorites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
    margin: 24px 0 48px;
}

.cogna-favorite-card {
    background: var(--cogna-surface, #fff);
    border: 1px solid var(--cogna-border, #e3e5eb);
    border-radius: var(--cogna-radius, 8px);
    overflow: hidden;
}

.cogna-favorite-card-thumb img,
.cogna-favorite-card-thumb .cogna-course-card-thumb-placeholder {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.cogna-favorite-card-body {
    padding: 16px;
}

.cogna-form-success {
    color: var(--cogna-success, #24a148);
    margin-bottom: 12px;
}

.cogna-course-card {
    background: var(--cogna-surface, #fff);
    border: 1px solid rgba(0, 0, 0, 0.07);
    border-radius: var(--cogna-radius, 10px);
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.15s ease, transform 0.15s ease;
    position: relative;
}

.cogna-course-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.cogna-course-card-thumb {
    display: block;
    aspect-ratio: 16 / 9;
    background: var(--cogna-primary-soft, rgba(62, 100, 222, 0.08));
    text-decoration: none;
    overflow: hidden;
}

.cogna-course-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

.cogna-course-card:hover .cogna-course-card-thumb img {
    transform: scale(1.04);
}

.cogna-course-card-thumb-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    background: linear-gradient(135deg, var(--cogna-primary-soft, rgba(62, 100, 222, 0.15)), var(--cogna-surface, #fff));
}

.cogna-course-card-thumb-placeholder::before {
    content: "";
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--cogna-primary, #3e64de);
    opacity: 0.25;
}

.cogna-course-card-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--cogna-secondary, #212327);
    color: #fff;
    font-size: 0.72em;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    padding: 4px 10px;
    border-radius: 99px;
}

.cogna-course-card-body {
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

.cogna-course-card-body h3 {
    font-size: 1.05em;
    margin: 0;
}

.cogna-course-card-body h3 a {
    color: inherit;
    text-decoration: none;
    transition: color 0.15s ease;
}

.cogna-course-card-body h3 a:hover {
    color: var(--cogna-primary, #3e64de);
}

.cogna-course-card-meta {
    display: flex;
    gap: 16px;
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 0.85em;
    color: var(--cogna-muted, #757c8e);
}

.cogna-course-card .cogna-btn {
    margin-top: auto;
}

/* --------------------------------------------------------------------------
   Dashboard do aluno
   -------------------------------------------------------------------------- */

.cogna-dashboard {
    display: grid;
    grid-template-columns: 260px 1fr;
    grid-template-areas:
        "hero hero"
        "sidebar content";
    gap: 32px;
    align-items: start;
    margin: 24px 0 56px;
}

.cogna-dashboard-hero {
    grid-area: hero;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 24px;
    align-items: center;
    background: var(--cogna-surface, #fff);
    border: 1px solid rgba(0, 0, 0, 0.07);
    border-radius: var(--cogna-radius, 10px);
    padding: 24px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.cogna-dashboard-hero h2 {
    margin: 8px 0 16px;
}

.cogna-dashboard-hero-thumb {
    width: 200px;
    border-radius: var(--cogna-radius, 10px);
    overflow: hidden;
    aspect-ratio: 16 / 9;
}

.cogna-dashboard-hero-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.cogna-dashboard-sidebar {
    grid-area: sidebar;
    background: var(--cogna-surface, #fff);
    border: 1px solid rgba(0, 0, 0, 0.07);
    border-radius: var(--cogna-radius, 10px);
    padding: 20px;
    position: sticky;
    top: 32px;
}

.cogna-dashboard-user {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.07);
    margin-bottom: 16px;
}

.cogna-dashboard-user span {
    display: block;
    font-size: 0.8em;
    word-break: break-all;
}

.cogna-dashboard-avatar {
    border-radius: 50%;
}

.cogna-dashboard-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.cogna-dashboard-nav button {
    text-align: left;
    background: none;
    border: none;
    font: inherit;
    font-weight: 600;
    color: var(--cogna-muted, #757c8e);
    padding: 10px 14px;
    border-radius: calc(var(--cogna-radius, 10px) - 2px);
    cursor: pointer;
}

.cogna-dashboard-nav button.is-active {
    background: var(--cogna-primary-soft, rgba(62, 100, 222, 0.1));
    color: var(--cogna-primary, #3e64de);
}

.cogna-dashboard-points {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(0, 0, 0, 0.07);
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.cogna-dashboard-points-value {
    font-size: 1.8em;
    font-weight: 800;
    color: var(--cogna-primary, #3e64de);
}

.cogna-dashboard-tab {
    display: none;
}

.cogna-dashboard-tab.is-active {
    display: block;
}

.cogna-dashboard-content {
    grid-area: content;
}

.cogna-certificate-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.cogna-certificate-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    background: var(--cogna-surface, #fff);
    border: 1px solid rgba(0, 0, 0, 0.07);
    border-radius: var(--cogna-radius, 10px);
    padding: 16px 20px;
    margin-bottom: 12px;
}

.cogna-certificate-list .cogna-muted {
    display: block;
    font-size: 0.85em;
}

/* --------------------------------------------------------------------------
   Paginação e feedback
   -------------------------------------------------------------------------- */

.cogna-pagination {
    margin: 0 0 48px;
    text-align: center;
}

.cogna-enroll-feedback {
    margin-top: 12px;
    font-size: 0.9em;
    font-weight: 600;
}

/* --------------------------------------------------------------------------
   Responsivo
   -------------------------------------------------------------------------- */

@media (max-width: 960px) {
    .cogna-course-layout {
        grid-template-columns: 1fr;
    }

    .cogna-course-cta {
        position: static;
    }

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

    .cogna-player-sidebar {
        position: fixed;
        top: 60px;
        left: 0;
        bottom: 0;
        width: min(340px, 92vw);
        max-height: none;
        border-right: none;
        border-bottom: none;
        z-index: 60;
        transform: translateX(-105%);
        transition: transform 0.2s ease;
        display: block;
    }

    .cogna-player-sidebar.is-open {
        transform: translateX(0);
        display: block;
    }

    .cogna-player-sidebar.is-hidden {
        transform: translateX(-105%);
    }

    .cogna-player-overlay {
        position: fixed;
        inset: 60px 0 0;
        background: rgba(0, 0, 0, 0.45);
        z-index: 55;
    }

    .cogna-dashboard {
        grid-template-columns: 1fr;
        grid-template-areas:
            "hero"
            "sidebar"
            "content";
    }

    .cogna-dashboard-hero {
        grid-template-columns: 1fr;
    }

    .cogna-dashboard-hero-thumb {
        width: 100%;
    }

    .cogna-dashboard-sidebar {
        position: static;
    }

    .cogna-player-progress {
        display: none;
    }

    .cogna-player-actions {
        padding: 4px;
        background: transparent;
        border: none;
        gap: 0;
    }

    .cogna-player-topbar .cogna-player-topbar-divider {
        display: none;
    }

    .cogna-player-topbar {
        padding: 8px 12px;
        gap: 12px;
    }

    .cogna-player-course-title {
        max-width: 42vw;
    }

    .cogna-archive-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .cogna-certificate-list li {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* --------------------------------------------------------------------------
   Archive toolbar
   -------------------------------------------------------------------------- */

.cogna-archive-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin: 0 0 24px;
}

.cogna-archive-search {
    display: flex;
    gap: 8px;
    flex: 1;
    min-width: 240px;
}

.cogna-search-input {
    flex: 1;
    padding: 11px 14px;
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: var(--cogna-radius, 8px);
    font: inherit;
    background: var(--cogna-surface, #fff);
}

.cogna-archive-sort {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.cogna-sort-chip {
    padding: 8px 14px;
    border-radius: 99px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    text-decoration: none;
    color: var(--cogna-muted, #757c8e);
    font-weight: 600;
    font-size: 0.9em;
}

.cogna-sort-chip.is-active {
    background: var(--cogna-primary-soft, rgba(62, 100, 222, 0.1));
    color: var(--cogna-primary, #3e64de);
    border-color: var(--cogna-primary, #3e64de);
}

/* --------------------------------------------------------------------------
   Empty state, badges, pontos
   -------------------------------------------------------------------------- */

.cogna-empty-state {
    text-align: center;
    padding: 48px 24px;
    background: var(--cogna-surface, #fff);
    border: 1px dashed rgba(0, 0, 0, 0.12);
    border-radius: var(--cogna-radius, 10px);
    margin: 24px 0;
}

.cogna-empty-state-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: var(--cogna-primary-soft, rgba(62, 100, 222, 0.12));
}

.cogna-course-info-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    list-style: none;
    margin: 0 0 20px;
    padding: 0;
}

.cogna-badge {
    display: inline-flex;
    padding: 6px 12px;
    border-radius: 99px;
    background: var(--cogna-primary-soft, rgba(62, 100, 222, 0.1));
    color: var(--cogna-primary, #3e64de);
    font-size: 0.85em;
    font-weight: 600;
}

.cogna-points-summary {
    margin-bottom: 20px;
}

.cogna-points-balance {
    font-size: 2.2em;
    font-weight: 800;
    color: var(--cogna-primary, #3e64de);
    margin: 0;
}

.cogna-points-balance span {
    font-size: 0.45em;
    font-weight: 600;
    color: var(--cogna-muted, #757c8e);
}

.cogna-points-history {
    list-style: none;
    margin: 0;
    padding: 0;
}

.cogna-points-history li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.cogna-points-history .is-positive {
    color: var(--cogna-success, #24a148);
}

.cogna-points-history .is-negative {
    color: #b91c1c;
}

.cogna-points-by-course {
    list-style: none;
    margin: 0 0 24px;
    padding: 0;
}

.cogna-points-by-course li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.cogna-achievement-filter {
    margin-bottom: 16px;
}

.cogna-achievement-filter select {
    display: block;
    margin-top: 6px;
    min-width: 240px;
    max-width: 100%;
}

.cogna-achievements-course {
    margin-bottom: 28px;
}

.cogna-achievements-course h4 {
    margin: 0 0 12px;
}

.cogna-achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 14px;
}

.cogna-achievement-card {
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--cogna-radius, 10px);
    padding: 16px;
    background: var(--cogna-surface, #fff);
}

.cogna-achievement-card.is-earned {
    border-color: rgba(36, 161, 72, 0.35);
    background: rgba(36, 161, 72, 0.06);
}

.cogna-achievement-card.is-locked {
    opacity: 0.72;
    filter: grayscale(0.35);
}

.cogna-achievement-icon {
    font-size: 28px;
    width: 28px;
    height: 28px;
    color: var(--cogna-primary, #3e64de);
    margin-bottom: 8px;
}

.cogna-achievement-card h5 {
    margin: 0 0 6px;
    font-size: 1em;
}

.cogna-achievement-card p {
    margin: 0 0 8px;
    font-size: 0.9em;
    color: var(--cogna-muted, #757c8e);
}

.cogna-achievement-requirement,
.cogna-achievement-date {
    font-size: 0.82em;
}

.cogna-certificate-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.cogna-account-card {
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
}

/* --------------------------------------------------------------------------
   Formulários de conta
   -------------------------------------------------------------------------- */

.cogna-form,
.cogna-register-form,
.cogna-reset-form,
.cogna-change-password-form {
    max-width: 440px;
    margin: 24px auto;
    padding: 28px;
    background: var(--cogna-surface, #fff);
    border: 1px solid rgba(0, 0, 0, 0.07);
    border-radius: var(--cogna-radius, 10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.cogna-form h2,
.cogna-register-form h2,
.cogna-reset-form h2,
.cogna-change-password-form h2 {
    margin: 0 0 8px;
    text-align: center;
    color: var(--cogna-secondary, #212327);
}

.cogna-form .cogna-field,
.cogna-register-form p,
.cogna-reset-form p,
.cogna-change-password-form p {
    margin-bottom: 16px;
}

.cogna-form label,
.cogna-register-form label,
.cogna-reset-form label,
.cogna-change-password-form label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    font-size: 0.9em;
}

.cogna-form input[type="text"],
.cogna-form input[type="email"],
.cogna-form input[type="password"],
.cogna-form input[type="search"],
.cogna-form select,
.cogna-register-form input,
.cogna-register-form select,
.cogna-reset-form input,
.cogna-change-password-form input {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: calc(var(--cogna-radius, 8px) - 2px);
    font: inherit;
    box-sizing: border-box;
}

.cogna-checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-weight: 400;
}

.cogna-checkbox-label input {
    margin-top: 4px;
    width: auto;
}

.cogna-form-error,
.cogna-form .cogna-notice-error {
    color: #b91c1c;
    font-size: 0.9em;
    margin-bottom: 12px;
}

.cogna-reset-response,
.cogna-change-password-response {
    margin-top: 12px;
    padding: 10px 12px;
    border-radius: calc(var(--cogna-radius, 8px) - 2px);
    font-size: 0.9em;
}

.cogna-reset-response.success,
.cogna-change-password-response.success {
    background: #dcfce7;
    color: #166534;
}

.cogna-reset-response.error,
.cogna-change-password-response.error {
    background: #fee2e2;
    color: #991b1b;
}

/* --------------------------------------------------------------------------
   Toasts
   -------------------------------------------------------------------------- */

.cogna-toast-root {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: min(360px, calc(100vw - 32px));
}

.cogna-toast {
    padding: 14px 18px;
    border-radius: var(--cogna-radius, 8px);
    background: var(--cogna-secondary, #212327);
    color: #fff;
    font-weight: 600;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
    animation: cogna-toast-in 0.2s ease;
}

.cogna-toast-success {
    background: var(--cogna-success, #24a148);
}

.cogna-toast-error {
    background: #b91c1c;
}

.cogna-toast.is-leaving {
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.cogna-toast-action {
    display: block;
    padding: 10px 18px;
    border-radius: var(--cogna-radius, 8px);
    background: var(--cogna-primary, #3e64de);
    color: #fff !important;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

@keyframes cogna-toast-in {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --------------------------------------------------------------------------
   Quiz review + loading + a11y
   -------------------------------------------------------------------------- */

.cogna-quiz-option.is-correct {
    border-color: var(--cogna-success, #24a148);
    background: #dcfce7;
}

.cogna-quiz-option.is-wrong {
    border-color: #f87171;
    background: #fee2e2;
}

.cogna-btn.is-loading {
    opacity: 0.75;
    cursor: wait;
}

.cogna-btn:focus-visible,
.cogna-tabs-nav button:focus-visible,
.cogna-dashboard-nav button:focus-visible,
.cogna-player-sidebar-toggle:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.85);
    outline-offset: 2px;
}

.cogna-player-topbar .cogna-btn-complete:focus-visible,
.cogna-player-topbar #concluir-aula:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Skeleton (archive loading placeholder)
   -------------------------------------------------------------------------- */

.cogna-skeleton {
    background: linear-gradient(90deg, rgba(0, 0, 0, 0.06) 25%, rgba(0, 0, 0, 0.1) 50%, rgba(0, 0, 0, 0.06) 75%);
    background-size: 200% 100%;
    animation: cogna-shimmer 1.2s infinite;
    border-radius: var(--cogna-radius, 8px);
}

@keyframes cogna-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}