/* Variáveis de Cores */
:root {
    --color-dark: #121216; /* Fundo escuro profundo */
    --color-card-dark: #1C1C24; /* Fundo dos cards (semitransparente/escuro) */
    --color-white: #E0E0E0; /* Texto claro principal */
    --color-primary-blue: #007bff; /* Azul Estrutural (IA, Estrutura) */
    --color-primary-orange: #FF9900; /* Laranja de Ação (Humano, CTA) */
    --color-text-dim: #A0A0B0; /* Texto secundário */
    --color-border-subtle: rgba(255, 255, 255, 0.1); /* Borda muito sutil */
    --color-highlight-blue: #00BFFF; /* Ciano de Destaque */
}

/* Base e Fundo (Textura mais sutil) */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--color-dark);
    color: var(--color-white);
    line-height: 1.6;
}

/* Textura de Fundo */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle, rgba(0, 123, 255, 0.05) 1px, transparent 1px),
        linear-gradient(to right, rgba(0, 123, 255, 0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0, 123, 255, 0.05) 1px, transparent 1px);
    background-size: 30px 30px, 30px 30px, 30px 30px;
    opacity: 0.2; 
    z-index: -1;
}

/* ======================================
   HEADER FIXO (APP HEADER) - Foco Central (Estilo Google)
   ====================================== */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between; 
    padding: 15px 30px;
    background-color: var(--color-card-dark);
    border-bottom: 1px solid var(--color-border-subtle); 
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-logo-text {
    font-size: 1.5em;
    font-weight: 700;
    color: var(--color-primary-orange);
}

.logo-area {
    flex-basis: 150px; 
}

/* Barra de Pesquisa */
.search-bar {
    flex-grow: 1; 
    max-width: 700px;
    margin: 0 auto; /* Centraliza a barra */
    
    display: flex;
    align-items: center;
    border: 1px solid var(--color-border-subtle);
    border-radius: 25px; 
    padding: 10px 20px;
    background-color: var(--color-dark);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    transition: all 0.3s;
}

.search-bar:focus-within {
    border-color: var(--color-highlight-blue);
    box-shadow: 0 0 8px rgba(0, 123, 255, 0.4); 
}

.search-bar i {
    color: var(--color-text-dim);
    margin-right: 15px;
}

.search-bar input {
    border: none;
    outline: none;
    background: transparent;
    width: 100%;
    color: var(--color-white);
}

.user-area {
    flex-basis: 150px; 
    display: flex;
    justify-content: flex-end; 
    gap: 15px;
}

.btn-login-app {
    background-color: var(--color-primary-orange);
    color: var(--color-dark);
    border: none;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 700;
}

.notification-icon {
    font-size: 1.2em;
    color: var(--color-primary-blue);
    cursor: pointer;
}

/* ======================================
   LAYOUT DE COLUNAS (DASHBOARD)
   ====================================== */
.dashboard-layout {
    display: flex;
    gap: 30px;
    padding: 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.main-column {
    flex: 3;
    min-width: 0;
}

.sidebar-column {
    flex: 1.2;
    display: flex;
    flex-direction: column;
    gap: 20px;
    min-width: 280px;
}

/* Estilos de Cards High-Tech Profissional */
.dashboard-card {
    background-color: var(--color-card-dark);
    padding: 25px;
    border-radius: 6px; 
    border: 1px solid var(--color-border-subtle); 
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    transition: all 0.3s;
}

.dashboard-card:hover {
    border-color: var(--color-primary-blue);
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.2); 
}

.dashboard-card h2, .dashboard-card h3 {
    margin-bottom: 15px;
    color: var(--color-highlight-blue);
    border-bottom: 2px solid var(--color-border-subtle);
    padding-bottom: 5px;
}

/* Destaque Trilha Recomendada */
.highlight-card {
    border-left: 5px solid var(--color-primary-orange); 
    box-shadow: 0 4px 10px rgba(255, 153, 0, 0.2); 
    margin-bottom: 30px;
}

.ia-suggestion {
    color: var(--color-primary-blue);
    font-weight: 700;
    margin-bottom: 15px;
}

.suggestion-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    color: var(--color-white);
}

/* Área de Artigos */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.article-card {
    background-color: var(--color-dark);
    padding: 15px;
    border-radius: 4px;
    border-left: 3px solid var(--color-primary-blue);
    transition: background-color 0.2s;
    cursor: pointer;
}

.article-card:hover {
    background-color: #1a1a20;
}

.article-card h4 {
    color: var(--color-white);
    font-size: 1em;
    margin-bottom: 5px;
}

.article-meta {
    font-size: 0.8em;
    color: var(--color-text-dim);
}

/* Tags de Área */
.area-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    background-color: var(--color-primary-blue);
    color: var(--color-dark); 
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.9em;
    cursor: pointer;
    transition: background-color 0.2s;
}

.tag:hover {
    background-color: #0056b3;
}

/* Botões */
.btn-action, .btn-primary-small {
    background-color: var(--color-primary-orange);
    color: var(--color-dark);
    border: none;
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 700;
    transition: background-color 0.2s;
}

.btn-action:hover, .btn-primary-small:hover {
    background-color: #e68900;
}

.btn-ghost {
    background: transparent;
    color: var(--color-primary-blue);
    border: 1px solid var(--color-primary-blue);
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 10px;
}

/* Serviços/Avisos */
.service-list li {
    list-style: none;
    padding: 8px 0;
    border-bottom: 1px dashed var(--color-border-subtle);
    color: var(--color-text-dim);
    font-size: 0.95em;
}

/* Área de Cursos Patrocinados */
.sponsor-banner-placeholder {
    background-color: var(--color-dark);
    border: 1px dashed var(--color-primary-blue);
    padding: 20px 15px;
    border-radius: 4px;
    text-align: center;
}

/* Área de Depoimentos */
.testimonial-video {
    width: 100%;
    max-height: 180px; 
    border-radius: 4px;
    background-color: var(--color-dark);
    border: 1px solid var(--color-highlight-blue); 
}

.video-caption {
    font-size: 0.9em;
    color: var(--color-text-dim);
    margin-top: 8px;
    text-align: left;
    font-style: italic;
}

.full-width-btn {
    width: 100%;
    margin-top: 10px;
}


/* ======================================
   RESPONSIVIDADE 
   ====================================== */
@media (max-width: 1024px) {
    .dashboard-layout {
        flex-direction: column;
        padding: 15px;
    }

    .main-column, .sidebar-column {
        flex: auto;
    }
}

@media (max-width: 768px) {
    .app-header {
        flex-wrap: wrap; 
        padding: 15px;
    }

    .logo-area {
        flex-basis: auto; 
    }
    
    .search-bar {
        order: 3;
        width: 100%;
        max-width: 100%;
        margin: 15px 0 0 0;
    }

    .user-area {
        flex-basis: auto;
    }

    .articles-grid {
        /* No mobile, uma coluna */
        grid-template-columns: 1fr; 
    }
}