/* ===== base.css ===== */
:root {
    --bg-color: #0f1419;
    --card-bg: #1c1f24;
    --text-color: #e5e7eb;
    --accent-color: #00c8ff;
    --muted-text: #9ca3af;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    --radius: 12px;
    --font-main: 'Inter', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ===== Header ===== */
header {
    background: linear-gradient(180deg, #1a1f24 0%, #101418 100%);
    text-align: center;
    padding: 2rem 1rem 1rem;
    box-shadow: var(--shadow);
}

.header-link {
    color: inherit;
    text-decoration: none;
}

.header-info h1 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--accent-color);
}

.header-info p {
    font-size: 1rem;
    color: var(--text-color);
    margin-top: 0.3rem;
}

/* ===== Main ===== */
main {
    width: 85vw;
    padding: 2rem 1rem;
    margin: 0 auto;
    transition: width 0.3s ease; /* suaviza o ajuste em resize */
}

/* Ajuste de largura para tablets */
@media (max-width: 768px) {
    main {
        width: 95vw;
    }
}

/* Ajuste de largura para celulares pequenos */
@media (max-width: 480px) {
    main {
        width: 95vw;
        padding: 1.5rem 1rem;
    }
}

/* ===== Footer ===== */
footer {
    text-align: center;
    padding: 1rem;
    color: var(--muted-text);
    font-size: 0.9rem;
    border-top: 1px solid #222;
    background-color: var(--card-bg);
}