/**
 * Guitar Master Academy - Main Styles v3.7.0
 * Componentes, Layout e Utilitários.
 * CORRIGIDO: Variáveis e cores para páginas de aula
 */

/* =========================================
   0. Variáveis Fallback (caso não carreguem)
   ========================================= */

:root {
    /* Variáveis usadas nas páginas de aula */
    --primary-color: #f6ad55;
    --text-light: #f7fafc;
    --text-muted: #a0aec0;
    --bg-dark: #1a202c;
    --bg-darker: #0f0f1a;
    
    /* Fallbacks para variáveis GMA */
    --gma-primary: #1a365d;
    --gma-primary-dark: #0f2442;
    --gma-primary-light: #2c5282;
    --gma-secondary: #ed8936;
    --gma-secondary-dark: #dd6b20;
    --gma-success: #48bb78;
    --gma-error: #f56565;
    --gma-warning: #ecc94b;
    --gma-bg-primary: #ffffff;
    --gma-bg-secondary: #f7fafc;
    --gma-text-primary: #1a202c;
    --gma-text-secondary: #4a5568;
    --gma-text-light: #ffffff;
    --gma-border-color: #e2e8f0;
    --gma-border-color-dark: #cbd5e0;
    --gma-font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --gma-font-heading: 'Montserrat', 'Inter', sans-serif;
    --gma-font-size-xs: 0.75rem;
    --gma-font-size-sm: 0.875rem;
    --gma-font-size-base: 1rem;
    --gma-font-size-lg: 1.125rem;
    --gma-font-size-xl: 1.25rem;
    --gma-font-size-2xl: 1.5rem;
    --gma-font-size-3xl: 2rem;
    --gma-font-size-4xl: 2.5rem;
    --gma-space-xs: 0.25rem;
    --gma-space-sm: 0.5rem;
    --gma-space-md: 1rem;
    --gma-space-lg: 1.5rem;
    --gma-space-xl: 2rem;
    --gma-radius-sm: 0.375rem;
    --gma-radius-md: 0.5rem;
    --gma-radius-lg: 0.75rem;
    --gma-radius-xl: 1rem;
    --gma-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --gma-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --gma-shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --gma-transition-fast: 150ms ease;
    --gma-transition-base: 250ms ease;
}

/* =========================================
   1. Layout & Grid System
   ========================================= */

.gma-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--gma-space-md);
}

.gma-container--fluid {
    max-width: 100%;
    padding: 0 var(--gma-space-md);
}

.gma-container--narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--gma-space-md);
}

/* Grid System Simples */
.gma-grid {
    display: grid;
    gap: var(--gma-space-lg);
}

.gma-grid--2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.gma-grid--3 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.gma-grid--4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

/* Flexbox Utilities */
.gma-flex { display: flex; }
.gma-flex--center { align-items: center; justify-content: center; }
.gma-flex--between { justify-content: space-between; align-items: center; }
.gma-flex--wrap { flex-wrap: wrap; }
.gma-gap-sm { gap: var(--gma-space-sm); }
.gma-gap-md { gap: var(--gma-space-md); }

/* =========================================
   2. Tipografia
   ========================================= */

.gma-heading-1, .gma-heading-2, .gma-heading-3 {
    font-family: var(--gma-font-heading);
    color: var(--gma-text-primary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--gma-space-md);
}

.gma-heading-1 { font-size: var(--gma-font-size-4xl); }
.gma-heading-2 { font-size: var(--gma-font-size-3xl); }
.gma-heading-3 { font-size: var(--gma-font-size-xl); }

.gma-text-lead {
    font-size: var(--gma-font-size-lg);
    color: var(--gma-text-secondary);
}

.gma-text-center { text-align: center; }
.gma-text-right { text-align: right; }

/* =========================================
   3. Botões (.gma-btn)
   ========================================= */

.gma-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: var(--gma-radius-md);
    font-weight: 600;
    font-family: var(--gma-font-heading);
    cursor: pointer;
    transition: all var(--gma-transition-fast);
    border: 2px solid transparent;
    text-align: center;
    font-size: var(--gma-font-size-base);
    text-decoration: none;
}

/* Variantes */
.gma-btn--primary {
    background-color: var(--gma-primary);
    color: var(--gma-text-light);
}
.gma-btn--primary:hover {
    background-color: var(--gma-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--gma-shadow-sm);
}

.gma-btn--secondary {
    background-color: var(--gma-secondary);
    color: var(--gma-text-light);
}
.gma-btn--secondary:hover {
    background-color: var(--gma-secondary-dark);
    transform: translateY(-1px);
}

.gma-btn--success {
    background-color: var(--gma-success);
    color: var(--gma-text-light);
}
.gma-btn--success:hover {
    background-color: #38a169;
    transform: translateY(-1px);
}

.gma-btn--outline {
    background-color: transparent;
    border-color: var(--gma-border-color-dark);
    color: var(--gma-text-primary);
}
.gma-btn--outline:hover {
    border-color: var(--gma-primary);
    color: var(--gma-primary);
}

.gma-btn--ghost {
    background-color: transparent;
    color: var(--gma-text-secondary);
}
.gma-btn--ghost:hover {
    background-color: var(--gma-bg-secondary);
    color: var(--gma-text-primary);
}

/* Tamanhos */
.gma-btn--sm {
    padding: 6px 12px;
    font-size: var(--gma-font-size-sm);
}
.gma-btn--lg {
    padding: 14px 28px;
    font-size: var(--gma-font-size-lg);
}
.gma-btn--block {
    width: 100%;
    display: flex;
}

/* Estado Disabled */
.gma-btn:disabled,
.gma-btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* =========================================
   4. Cards (.gma-card)
   ========================================= */

.gma-card {
    background-color: var(--gma-bg-primary);
    border-radius: var(--gma-radius-lg);
    padding: var(--gma-space-lg);
    border: 1px solid var(--gma-border-color);
    transition: box-shadow var(--gma-transition-base);
}

.gma-card--elevated {
    box-shadow: var(--gma-shadow-md);
    border: none;
}

.gma-card:hover {
    box-shadow: var(--gma-shadow-lg);
}

.gma-card--flat {
    box-shadow: none;
    border: 1px solid var(--gma-border-color);
}

.gma-card--flat:hover {
    box-shadow: none;
}

.gma-card_header {
    margin-bottom: var(--gma-space-md);
    border-bottom: 1px solid var(--gma-border-color);
    padding-bottom: var(--gma-space-sm);
}

.gma-card_body,
.gma-card_content {
    color: var(--gma-text-secondary);
}

.gma-card_footer {
    margin-top: var(--gma-space-lg);
    padding-top: var(--gma-space-md);
    border-top: 1px solid var(--gma-border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* =========================================
   5. Formulários (.gma-form)
   ========================================= */

.gma-form_group {
    margin-bottom: var(--gma-space-md);
}

.gma-form_label {
    display: block;
    margin-bottom: var(--gma-space-xs);
    font-weight: 600;
    color: var(--gma-text-primary);
    font-size: var(--gma-font-size-sm);
}

.gma-form_input,
.gma-form_select,
.gma-form_textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gma-border-color);
    border-radius: var(--gma-radius-sm);
    background-color: var(--gma-bg-primary);
    color: var(--gma-text-primary);
    transition: border-color var(--gma-transition-fast);
    box-sizing: border-box;
}

.gma-form_input:focus,
.gma-form_select:focus,
.gma-form_textarea:focus {
    outline: none;
    border-color: var(--gma-primary);
    box-shadow: 0 0 0 3px rgba(44, 95, 141, 0.1);
}

.gma-form_error {
    color: var(--gma-error);
    font-size: var(--gma-font-size-xs);
    margin-top: 4px;
}

/* =========================================
   6. Utilities & Badges
   ========================================= */

.gma-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: var(--gma-font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
}

.gma-badge--primary {
    background-color: var(--gma-primary);
    color: white;
}

.gma-badge--premium {
    background-color: var(--gma-secondary);
    color: white;
}

.gma-badge--success {
    background-color: var(--gma-success);
    color: white;
}

/* Helper de Loading */
.gma-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.gma-loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin-top: -10px;
    margin-left: -10px;
    border: 2px solid var(--gma-primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: gma-spin 0.8s linear infinite;
}

@keyframes gma-spin {
    to { transform: rotate(360deg); }
}

/* =========================================
   7. Breadcrumbs
   ========================================= */

.gma-breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--gma-space-sm);
    margin-bottom: var(--gma-space-lg);
    font-size: var(--gma-font-size-sm);
}

.gma-breadcrumbs a {
    color: var(--gma-text-secondary);
    text-decoration: none;
}

.gma-breadcrumbs a:hover {
    color: var(--gma-primary);
}

.gma-breadcrumbs .separator {
    color: var(--gma-text-secondary);
    opacity: 0.5;
}

/* =========================================
   8. PÁGINA DE AULA - ESTILOS CORRIGIDOS
   ========================================= */

/* Wrapper principal da aula */
.gma-module-wrapper {
    background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 50%, #16213e 100%);
    min-height: 100vh;
    padding-bottom: 40px;
}

.gma-module-wrapper,
.gma-module-wrapper * {
    color: #e2e8f0;
}

/* Header do módulo */
.gma-module-wrapper .module-header {
    background: linear-gradient(135deg, #1a365d 0%, #2c5282 100%);
    padding: 40px 20px;
    text-align: center;
    margin-bottom: 30px;
}

.gma-module-wrapper .module-header.iniciante {
    background: linear-gradient(135deg, #276749 0%, #38a169 100%);
}

.gma-module-wrapper .module-header.intermediario {
    background: linear-gradient(135deg, #c05621 0%, #ed8936 100%);
}

.gma-module-wrapper .module-header.avancado {
    background: linear-gradient(135deg, #9b2c2c 0%, #e53e3e 100%);
}

.gma-module-wrapper .module-header h1 {
    color: #ffffff !important;
    font-size: 2rem;
    margin: 15px 0 10px;
    font-weight: 700;
}

.gma-module-wrapper .module-header p {
    color: rgba(255, 255, 255, 0.9) !important;
    font-size: 1.1rem;
    margin: 0;
}

.gma-module-wrapper .module-icon {
    font-size: 3rem;
    display: block;
}

.gma-module-wrapper .module-meta-bar {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.gma-module-wrapper .meta-item {
    background: rgba(0, 0, 0, 0.2);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: #ffffff !important;
}

/* Breadcrumb da aula */
.gma-module-wrapper .lesson-breadcrumb {
    margin-bottom: 20px;
}

.gma-module-wrapper .lesson-breadcrumb a {
    color: rgba(255, 255, 255, 0.8) !important;
    text-decoration: none;
}

.gma-module-wrapper .lesson-breadcrumb a:hover {
    color: #f6ad55 !important;
}

/* Layout do conteúdo */
.gma-module-wrapper .lesson-content-wrapper {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 30px;
    margin-bottom: 30px;
}

/* Conteúdo principal */
.gma-module-wrapper .lesson-main-content {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    overflow: hidden;
}

/* Tabs */
.gma-module-wrapper .lesson-tabs {
    display: flex;
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.gma-module-wrapper .lesson-tab {
    flex: 1;
    padding: 15px 20px;
    background: none;
    border: none;
    color: #a0aec0 !important;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1rem;
}

.gma-module-wrapper .lesson-tab:hover {
    background: rgba(255, 255, 255, 0.05);
    color: #f7fafc !important;
}

.gma-module-wrapper .lesson-tab.active {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff !important;
    border-bottom: 2px solid #f6ad55;
}

/* Conteúdo das tabs */
.gma-module-wrapper .lesson-tab-content {
    display: none;
    padding: 30px;
    color: #e2e8f0 !important;
}

.gma-module-wrapper .lesson-tab-content.active {
    display: block;
}

/* Texto do conteúdo */
.gma-module-wrapper .lesson-text-content {
    color: #e2e8f0 !important;
}

.gma-module-wrapper .lesson-text-content h3 {
    color: #f6ad55 !important;
    margin: 25px 0 15px;
    font-size: 1.3rem;
    font-weight: 600;
}

.gma-module-wrapper .lesson-text-content h3:first-child {
    margin-top: 0;
}

.gma-module-wrapper .lesson-text-content h4 {
    color: #ed8936 !important;
    margin: 20px 0 10px;
    font-size: 1.1rem;
    font-weight: 600;
}

.gma-module-wrapper .lesson-text-content p {
    color: #e2e8f0 !important;
    line-height: 1.7;
    margin-bottom: 15px;
}

.gma-module-wrapper .lesson-text-content ul,
.gma-module-wrapper .lesson-text-content ol {
    color: #e2e8f0 !important;
    margin-left: 20px;
    margin-bottom: 15px;
}

.gma-module-wrapper .lesson-text-content li {
    color: #e2e8f0 !important;
    margin-bottom: 8px;
    line-height: 1.6;
}

/* Tablatura */
.gma-module-wrapper .lesson-tablature {
    color: #e2e8f0 !important;
}

.gma-module-wrapper .tablature,
.gma-module-wrapper pre.tablature {
    background: #1a1a2e;
    padding: 20px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.5;
    overflow-x: auto;
    color: #48bb78 !important;
    border: 1px solid rgba(72, 187, 120, 0.3);
}

/* Sidebar */
.gma-module-wrapper .lesson-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.gma-module-wrapper .sidebar-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.gma-module-wrapper .sidebar-card h4 {
    color: #f7fafc !important;
    margin-bottom: 15px;
    font-size: 1rem;
    font-weight: 600;
}

/* Ferramentas rápidas */
.gma-module-wrapper .quick-tools-mini {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.gma-module-wrapper .quick-tool-mini {
    display: block;
    padding: 12px 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    text-decoration: none;
    color: #f7fafc !important;
    font-size: 0.9rem;
    transition: all 0.3s;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.gma-module-wrapper .quick-tool-mini:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #f6ad55;
    color: #f6ad55 !important;
}

/* Card de XP */
.gma-module-wrapper .xp-card {
    text-align: center;
    background: linear-gradient(135deg, rgba(236, 201, 75, 0.15) 0%, rgba(214, 158, 46, 0.15) 100%);
    border: 1px solid rgba(236, 201, 75, 0.3);
}

.gma-module-wrapper .xp-reward {
    font-size: 2rem;
    font-weight: 700;
    color: #ecc94b !important;
    margin: 10px 0;
}

/* Barra de ações */
.gma-module-wrapper .lesson-actions-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    flex-wrap: wrap;
    gap: 15px;
}

.gma-module-wrapper .lesson-nav {
    flex: 1;
}

.gma-module-wrapper .lesson-complete-action {
    flex: 2;
    text-align: center;
}

/* Botões na página de aula */
.gma-module-wrapper .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    border: none;
    font-size: 1rem;
}

.gma-module-wrapper .btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff !important;
}

.gma-module-wrapper .btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.gma-module-wrapper .btn-outline {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: #f7fafc !important;
}

.gma-module-wrapper .btn-outline:hover {
    border-color: #f6ad55;
    color: #f6ad55 !important;
}

.gma-module-wrapper .btn-lg {
    padding: 14px 28px;
    font-size: 1.1rem;
}

/* =========================================
   9. Responsividade
   ========================================= */

@media (max-width: 900px) {
    .gma-module-wrapper .lesson-content-wrapper {
        grid-template-columns: 1fr;
    }
    
    .gma-module-wrapper .lesson-sidebar {
        order: -1;
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .gma-module-wrapper .sidebar-card {
        flex: 1;
        min-width: 200px;
    }
}

@media (max-width: 768px) {
    .gma-grid--2,
    .gma-grid--3,
    .gma-grid--4 {
        grid-template-columns: 1fr;
    }

    .gma-flex--between {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--gma-space-md);
    }
    
    .gma-btn {
        width: 100%;
        justify-content: center;
    }
    
    .gma-module-wrapper .module-header h1 {
        font-size: 1.5rem;
    }
    
    .gma-module-wrapper .lesson-tab-content {
        padding: 20px;
    }
}

@media (max-width: 600px) {
    .gma-module-wrapper .lesson-tabs {
        flex-direction: column;
    }
    
    .gma-module-wrapper .lesson-actions-bar {
        flex-direction: column;
    }
    
    .gma-module-wrapper .lesson-nav,
    .gma-module-wrapper .lesson-complete-action {
        width: 100%;
        text-align: center;
    }
    
    .gma-module-wrapper .btn {
        width: 100%;
    }
}