/* ==========================================================================
   GOLDEBET - SEÇÃO AULAS
   Página dedicada às aulas de apostas
   ========================================================================== */

/* =============
   CONTAINER PRINCIPAL
   ============= */
.aulas-section {
    min-height: 100vh;
    padding: calc(var(--spacing-xl) + 80px) 0 var(--spacing-xl) 0;
    background: var(--primary-dark);
}

.aulas-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* =============
   HEADER DAS AULAS
   ============= */
.aulas-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.aulas-header-top {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    position: relative;
    min-height: 60px;
}

.aulas-header h2 {
    color: var(--text-light);
    font-size: var(--font-size-xxl);
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.aulas-header h2 i {
    color: var(--secondary-gold);
    font-size: var(--font-size-xl);
}


/* =============
   BOTÃO VOLTAR
   ============= */
.aulas-section .btn-back {
    background: linear-gradient(135deg, var(--primary-gold), var(--secondary-gold));
    border: none;
    border-radius: var(--radius-lg);
    color: var(--text-dark);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    box-shadow: 0 4px 15px rgba(253, 65, 2, 0.2);
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
}

.aulas-section .btn-back:hover {
    background: linear-gradient(135deg, var(--secondary-gold), var(--primary-gold));
    transform: translateY(calc(-50% - 2px));
    box-shadow: 0 6px 20px rgba(253, 65, 2, 0.3);
}

.aulas-section .btn-back:active {
    transform: translateY(calc(-50% + 1px));
}

.aulas-section .btn-back i {
    font-size: var(--font-size-sm);
}

/* =============
   FILTROS DE AULAS
   ============= */
.aulas-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.filter-btn {
    background: var(--secondary-dark);
    border: 2px solid var(--border-gold);
    border-radius: var(--radius-lg);
    color: var(--text-light);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    position: relative;
    overflow: hidden;
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(253, 65, 2, 0.2), transparent);
    transition: left 0.5s;
}

.filter-btn:hover::before {
    left: 100%;
}

.filter-btn:hover {
    border-color: var(--secondary-gold);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(253, 65, 2, 0.2);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--primary-gold), var(--secondary-gold));
    border-color: var(--secondary-gold);
    color: var(--text-dark);
    box-shadow: 0 4px 15px rgba(253, 65, 2, 0.3);
}

.filter-btn.active:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(253, 65, 2, 0.4);
}

.filter-btn i {
    font-size: var(--font-size-base);
}

/* =============
   GRID DE AULAS
   ============= */
.aulas-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xxl);
}

/* =============
   CARD DE AULA
   ============= */
.aula-card {
    background: var(--secondary-dark);
    border: 1px solid var(--border-gold);
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    display: flex;
    flex-direction: column;
}

.aula-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
    border-color: var(--secondary-gold);
}

/* Thumbnail da Aula */
.aula-thumbnail {
    position: relative;
    width: 100%;
    height: 180px;
    overflow: hidden;
}

.aula-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.aula-card:hover .aula-image {
    transform: scale(1.05);
}

.aula-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.aula-card:hover .aula-overlay {
    opacity: 1;
}

.aula-overlay i {
    color: var(--text-light);
    font-size: 3rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}


/* Conteúdo da Aula */
.aula-content {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.aula-title {
    color: var(--text-light);
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.3;
}

.aula-description {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    line-height: 1.5;
    margin: 0 0 var(--spacing-md) 0;
    flex: 1;
}


/* =============
   MODAL DE VÍDEO
   ============= */
.aula-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
    opacity: 0;
    transition: opacity 0.3s ease;
    overflow: hidden;
}

.aula-modal.show {
    opacity: 1;
}

.aula-modal-content {
    background: var(--secondary-dark);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 0;
    border: 1px solid var(--border-gold);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 1000px;
    max-height: 90vh;
    overflow: hidden;
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-gold);
    background: var(--primary-dark);
}

.modal-header h3 {
    color: var(--text-light);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: var(--font-size-xl);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
}

.modal-close:hover {
    color: var(--text-light);
    background: rgba(255, 255, 255, 0.1);
}

.modal-body {
    padding: var(--spacing-lg);
}

.video-container {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-md);
    overflow: hidden;
}

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

.aula-info {
    color: var(--text-light);
}

.aula-info p {
    font-size: var(--font-size-base);
    line-height: 1.6;
    margin: 0 0 var(--spacing-md) 0;
}


/* =============
   RESPONSIVIDADE
   ============= */

/* Tablet */
@media (max-width: 1024px) {
    .aulas-grid {
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: repeat(4, 1fr);
        gap: var(--spacing-md);
    }
    
    .aulas-header-top {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .aulas-section .btn-back {
        position: static;
        align-self: flex-start;
        transform: none;
        margin-bottom: var(--spacing-md);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .aulas-container {
        padding: 0 var(--spacing-md);
    }
    
    .aulas-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: repeat(5, 1fr);
        gap: var(--spacing-md);
    }
    
    .aulas-header h2 {
        font-size: var(--font-size-xl);
    }
    
    .aulas-filters {
        gap: var(--spacing-sm);
    }
    
    .filter-btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    
    .aula-thumbnail {
        height: 140px;
    }
    
    .aula-content {
        padding: var(--spacing-md);
    }
    
    .aula-title {
        font-size: var(--font-size-base);
    }
    
    .aula-description {
        font-size: var(--font-size-xs);
    }
    
    .aula-modal-content {
        width: 95%;
        max-width: 95%;
        max-height: 85vh;
        left: 50%;
        transform: translate(-50%, -50%);
    }
    
    .modal-header {
        padding: var(--spacing-md);
    }
    
    .modal-header h3 {
        font-size: var(--font-size-lg);
    }
    
    .modal-body {
        padding: var(--spacing-md);
    }
    
}

/* Mobile pequeno */
@media (max-width: 480px) {
    .aulas-grid {
        grid-template-columns: 1fr;
        grid-template-rows: repeat(10, 1fr);
        gap: var(--spacing-sm);
    }
    
    .aula-thumbnail {
        height: 120px;
    }
    
    .aula-content {
        padding: var(--spacing-sm);
    }
    
    .aula-modal-content {
        width: 98%;
        max-width: 98%;
        left: 50%;
        transform: translate(-50%, -50%);
    }
    
}

/* =============
   ANIMAÇÕES
   ============= */
.aula-card {
    animation: fadeInUp 0.6s ease-out;
}

.aula-card:nth-child(1) { animation-delay: 0.1s; }
.aula-card:nth-child(2) { animation-delay: 0.2s; }
.aula-card:nth-child(3) { animation-delay: 0.3s; }
.aula-card:nth-child(4) { animation-delay: 0.4s; }
.aula-card:nth-child(5) { animation-delay: 0.5s; }
.aula-card:nth-child(6) { animation-delay: 0.6s; }
.aula-card:nth-child(7) { animation-delay: 0.7s; }
.aula-card:nth-child(8) { animation-delay: 0.8s; }
.aula-card:nth-child(9) { animation-delay: 0.9s; }
.aula-card:nth-child(10) { animation-delay: 1.0s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =============
   ESTADOS DE CARREGAMENTO
   ============= */
.aula-card.loading {
    opacity: 0.6;
    pointer-events: none;
}

.aula-card.loading .aula-image {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

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

/* =============
   ESTADOS DE LOADING, ERRO E VAZIO
   ============= */
.aulas-loading,
.aulas-error,
.aulas-empty {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    text-align: center;
}

.loading-spinner,
.error-message,
.empty-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    color: var(--text-light);
}

.loading-spinner i {
    font-size: 3rem;
    color: var(--secondary-gold);
    animation: spin 1s linear infinite;
}

.error-message i,
.empty-message i {
    font-size: 3rem;
    color: var(--text-muted);
}

.loading-spinner p,
.error-message p,
.empty-message p {
    font-size: var(--font-size-lg);
    margin: 0;
}

.btn-retry {
    background: linear-gradient(135deg, var(--primary-gold), var(--secondary-gold));
    border: none;
    border-radius: var(--radius-lg);
    color: var(--text-dark);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: 0 4px 15px rgba(253, 65, 2, 0.2);
}

.btn-retry:hover {
    background: linear-gradient(135deg, var(--secondary-gold), var(--primary-gold));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(253, 65, 2, 0.3);
}

.btn-retry:active {
    transform: translateY(0);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
/* ====================================================
   AULAS - DESIGN MELHORADO
   ==================================================== */

/* Hero banner da seção */
.aulas-section {
    background: radial-gradient(ellipse at top center, rgba(250,0,0,0.08) 0%, transparent 60%), var(--primary-dark) !important;
}

.aulas-header {
    position: relative;
    margin-bottom: 2rem !important;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(250,0,0,0.15);
}

.aulas-header h2 {
    font-size: 1.5rem !important;
    letter-spacing: .04em;
}
.aulas-header h2 i {
    background: linear-gradient(135deg, #FA0000, #ff4444);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Grid principal */
.aulas-grid {
    display: grid !important;
    grid-template-columns: repeat(4, 1fr) !important;
    grid-template-rows: unset !important;
    gap: 20px !important;
}

/* Card redesenhado */
.aula-card {
    background: rgba(10, 5, 5, 0.85) !important;
    border: 1px solid rgba(250,0,0,0.18) !important;
    border-radius: 14px !important;
    overflow: hidden;
    cursor: pointer;
    transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease !important;
    position: relative;
    display: flex !important;
    flex-direction: column !important;
}

.aula-card:hover {
    transform: translateY(-6px) !important;
    box-shadow: 0 16px 40px rgba(250,0,0,0.2), 0 4px 12px rgba(0,0,0,0.5) !important;
    border-color: rgba(250,0,0,0.6) !important;
}

/* Thumbnail */
.aula-thumbnail {
    position: relative;
    width: 100%;
    height: 160px !important;
    overflow: hidden;
    background: #0a0505;
}

.aula-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease !important;
    filter: brightness(0.88);
}
.aula-card:hover .aula-image {
    transform: scale(1.06) !important;
    filter: brightness(1);
}

/* Play overlay */
.aula-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.7) 100%) !important;
    display: flex !important;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity .3s ease !important;
}
.aula-card:hover .aula-overlay {
    opacity: 1 !important;
}
.aula-overlay i {
    color: #fff !important;
    font-size: 2.5rem !important;
    background: rgba(250,0,0,0.85);
    width: 52px; height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px rgba(250,0,0,0.6);
    padding-left: 4px;
}

/* Número da aula (badge top-left) */
.aula-thumbnail::before {
    content: attr(data-index);
    position: absolute;
    top: 8px; left: 8px;
    background: rgba(250,0,0,0.9);
    color: #fff;
    font-size: .6rem;
    font-weight: 800;
    letter-spacing: .06em;
    padding: 3px 8px;
    border-radius: 20px;
    z-index: 2;
    backdrop-filter: blur(4px);
}

/* Conteúdo do card */
.aula-content {
    padding: 14px 16px 16px !important;
    flex: 1;
    display: flex !important;
    flex-direction: column !important;
    background: linear-gradient(180deg, rgba(20,8,8,0.9) 0%, rgba(8,3,3,0.95) 100%);
}

.aula-title {
    color: #f0f0f0 !important;
    font-size: .9rem !important;
    font-weight: 700 !important;
    margin: 0 0 8px 0 !important;
    line-height: 1.35 !important;
    letter-spacing: .01em;
}

.aula-description {
    color: rgba(255,255,255,0.4) !important;
    font-size: .72rem !important;
    line-height: 1.5 !important;
    margin: 0 !important;
}

/* Botão play footer do card */
.aula-card::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(250,0,0,0.6), transparent);
    opacity: 0;
    transition: opacity .3s ease;
}
.aula-card:hover::after { opacity: 1; }

/* Responsivo */
@media (max-width: 1100px) {
    .aulas-grid { grid-template-columns: repeat(3, 1fr) !important; }
}
@media (max-width: 760px) {
    .aulas-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .aula-thumbnail { height: 140px !important; }
}
@media (max-width: 480px) {
    .aulas-grid { grid-template-columns: 1fr !important; }
}