/* Estilos Globais Guiedutech - Tema Escuro & Cores Vivas */
:root {
    --bg-main: #0f172a;        /* Fundo escuro grafite/azulado (Profundo) */
    --bg-card: #1e293b;        /* Fundo dos cards e painéis ligeiramente mais claro */
    --primary-color: #6366f1;  /* Índigo vibrante */
    --primary-hover: #4f46e5;
    --secondary-color: #06b6d4;/* Azul Ciano neon/vivo */
    --accent-color: #10b981;   /* Verde esmeralda vivo para destaques/sucesso */
    --text-main: #f8fafc;      /* Texto principal quase branco */
    --text-muted: #94a3b8;     /* Texto secundário acinzentado */
    --border-color: #334155;   /* Bordas discretas em tom escuro */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
}

/* Cabeçalho / Navbar */
header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-main);
    text-decoration: none;
}

.logo span {
    color: var(--secondary-color);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    align-items: center;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    transition: color 0.2s;
}

nav ul li a:hover {
    color: var(--secondary-color);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white !important;
    padding: 0.5rem 1.2rem;
    border-radius: 6px;
    font-weight: bold;
    transition: background-color 0.2s, transform 0.1s;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

/* Container Principal */
.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

/* Cards Padrão */
.card-base {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    transition: border-color 0.2s;
}

.card-base:hover {
    border-color: var(--secondary-color);
}

/* Rodapé */
footer {
    background: #090d16;
    color: var(--text-muted);
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
    border-top: 1px solid var(--border-color);
}