/* Variáveis e Design System (Tokens) */
:root {
    /* Cores da Marca Modest Tech Academy */
    --color-bg-dark: #000000; /* Preto (Marca) */
    --color-bg-darker: #132D46; /* Azul Escuro (Marca) */
    --color-primary: #0098BC; /* Azul Claro (Marca) - Substituindo o verde */
    --color-primary-hover: #007A9B; /* Tom mais escuro do Azul Claro para hover */
    --color-text-main: #FFFFFF; /* Branca (Marca) */
    --color-text-muted: #6A6E79; /* Cinza (Marca) */
    --color-card-bg: rgba(255, 255, 255, 0.03); /* Glassmorphism sutil */
    --color-card-border: rgba(255, 255, 255, 0.1);
    
    /* Tipografia (Premium) */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Outros */
    --radius-md: 8px;
    --radius-lg: 16px;
    --transition-fast: 0.2s ease-in-out;
}

/* Reset Básico */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html { scroll-behavior: smooth; }

body {
    background-color: var(--color-bg-dark);
    color: var(--color-text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: #ffffff;
    line-height: 1.2;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Header Navbar */
.main-header {
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--color-card-border);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo a {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
    align-items: center;
}

.main-nav a {
    color: var(--color-text-main);
    font-weight: 600;
}

.main-nav a:hover {
    color: var(--color-primary);
}

/* Componentes Botões */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-bg-darker);
    box-shadow: 0 0 15px rgba(0, 224, 255, 0.4);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    box-shadow: 0 0 25px rgba(0, 224, 255, 0.6);
    color: var(--color-bg-darker);
}

/* Utilities Layout */
.section-pad {
    padding: 5rem 0;
}

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

/* Hero Section */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: radial-gradient(circle at top, rgba(0,224,255,0.1) 0%, var(--color-bg-dark) 50%);
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.hero h1 span {
    color: var(--color-primary);
}

.hero p {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 2rem auto;
}

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    padding: 2rem;
    border-radius: var(--radius-lg);
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
}

.card h3 { margin-bottom: 1rem; color: #fff; }
.card p { color: var(--color-text-muted); }

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}
.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}
.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-card-border);
    background: var(--color-bg-darker);
    color: #fff;
    font-family: inherit;
    transition: border-color var(--transition-fast);
}
.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* Footer */
.main-footer {
    background-color: var(--color-bg-darker);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--color-card-border);
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-col h3, .footer-col h4 { margin-bottom: 1rem; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col a { color: var(--color-text-muted); }
.footer-col a:hover { color: var(--color-primary); }

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid var(--color-card-border);
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Media Queries */
@media (max-width: 768px) {
    .main-nav ul { display: none; } /* Mobile menu needed logic later */
    .hero h1 { font-size: 2.5rem; }
}