/* ==========================================
   VARIÁVEIS DE CORES (DARK MODE NATIVO)
   ========================================== */
:root {
    --bg-color: #0f172a;
    --sidebar-bg: rgba(30, 41, 59, 0.7);
    --card-bg: rgba(30, 41, 59, 0.5);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #3b82f6; /* Azul Meta */
    --success-color: #10b981; /* Green/Lucro */
    --danger-color: #ef4444; /* Red/Atenção */
    --glass-border: rgba(255, 255, 255, 0.1);
}

/* ==========================================
   RESET E BASE
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Segoe UI', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* ==========================================
   ESTRUTURA PRINCIPAL (DESKTOP)
   ========================================== */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: var(--sidebar-bg);
    backdrop-filter: blur(10px);
    border-right: 1px solid var(--glass-border);
    padding: 1.5rem 0;
    position: fixed;
    height: 100vh;
    transition: all 0.3s ease;
    z-index: 100;
}

.sidebar-logo {
    padding: 0 1.5rem 2rem;
    font-size: 1.2rem;
    color: var(--accent-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    list-style: none;
}

.nav-links li a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
}

.nav-links li a:hover, .nav-links li a.active {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-color);
    border-right: 3px solid var(--accent-color);
}

/* Área Central */
.main-content {
    flex: 1;
    margin-left: 250px;
    padding: 2rem;
    padding-bottom: 5rem; /* Espaço para o footer mobile */
}

/* Topbar */
.top-header {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-bottom: 2rem;
}

.menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--card-bg);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
}

.status-dot {
    width: 10px;
    height: 10px;
    background: var(--success-color);
    border-radius: 50%;
}

/* ==========================================
   COMPONENTES (GLASSMORPHISM)
   ========================================== */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* ==========================================
   RESPONSIVIDADE E MOBILE
   ========================================== */
.mobile-tab-bar {
    display: none;
    position: fixed;
    bottom: 0;
    width: 100%;
    background: var(--sidebar-bg);
    backdrop-filter: blur(15px);
    border-top: 1px solid var(--glass-border);
    justify-content: space-around;
    padding: 0.8rem 0;
    z-index: 99;
}

.tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.75rem;
    gap: 0.3rem;
}

.tab-item i {
    font-size: 1.5rem;
}

.tab-item.active {
    color: var(--accent-color);
}

.tab-item.highlight i {
    color: #a855f7; /* Roxo da IA */
    text-shadow: 0 0 10px rgba(168, 85, 247, 0.5);
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: 1rem;
    }
    
    .top-header {
        justify-content: space-between;
    }
    
    .menu-btn {
        display: block;
    }
    
    .mobile-tab-bar {
        display: flex;
    }
}