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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
    font-size: 17px;
    line-height: 1.7;
    color: #333333;
    background:
        radial-gradient(circle at 8% 0%, rgba(26, 115, 232, 0.08), transparent 42%),
        #f8fafc;
}

/* HEADER */
header {
    width: 100%;
    padding: 20px 40px;
    position: fixed;
    top: 0;
    left: 0;
    background-color: #ffffff;
    display: flex;
    justify-content: flex-start;
    gap: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    z-index: 1000;
}

header nav {
    display: flex;
    gap: 40px;
    width: min(100%, 980px);
    margin: 0 auto;
    align-items: center;
}

@media (max-width: 768px) {
    header nav {
        flex-direction: row;
        gap: 15px;
    }
}

header nav a:hover {
    color: #0D47A1;
}

header nav a {
    color: #333333;
    font-weight: 500;
    text-decoration: none;
    padding: 8px 10px;
    border-radius: 8px;
    transition: background-color 0.2s ease, color 0.2s ease;
}

header nav a:last-child {
    margin-left: auto;
    background: #1A73E8;
    color: #ffffff;
    font-weight: 600;
    box-shadow: 0 6px 18px rgba(26, 115, 232, 0.18);
}

header nav a:last-child:hover {
    color: #ffffff;
    background: #0D47A1;
    text-decoration: none;
}

/* MAIN */
main {
    padding: 100px 20px 50px 20px;
    /* espaço para header fixo */
    width: min(100%, 900px);
    margin: 0 auto;
}

main>* {
    max-width: 720px;
}

/* HEADINGS */
h1 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #111111;
}

h2 {
    font-size: 1.6rem;
    font-weight: 600;
    margin: 2rem 0 1rem 0;
    color: #111111;
}

h3 {
    font-size: 1.3rem;
    font-weight: 500;
    margin: 1.5rem 0 0.75rem 0;
    color: #111111;
}

/* PARAGRAPHS */
p {
    margin-bottom: 1.25rem;
    color: #555555;
}

strong {
    color: #111111;
}

/* LISTS */
ul,
ol {
    margin-left: 20px;
    margin-bottom: 1.25rem;
}

li {
    margin-bottom: 0.6rem;
}

/* LINKS */
a {
    color: #1A73E8;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* CTA sem depender de classe no HTML atual.
   Restringe para links de contato para não transformar links contextuais em botão. */
main>p>a[href$="contato/"]:only-child {
    display: inline-block;
    background: linear-gradient(180deg, #2f7fed 0%, #1A73E8 100%);
    color: #ffffff;
    font-weight: 600;
    letter-spacing: 0.01em;
    padding: 14px 24px;
    border-radius: 10px;
    border: 1px solid rgba(13, 71, 161, 0.18);
    text-decoration: none;
    margin-top: 0.25rem;
    transition: background-color 0.2s, transform 0.15s, box-shadow 0.2s;
    box-shadow:
        0 10px 22px rgba(26, 115, 232, 0.18),
        inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

main>p>a[href$="contato/"]:only-child:hover {
    background-color: #0D47A1;
    transform: translateY(-2px);
    box-shadow:
        0 14px 26px rgba(13, 71, 161, 0.22),
        inset 0 1px 0 rgba(255, 255, 255, 0.22);
    text-decoration: none;
}

/* CTA BUTTONS */
a.cta-button {
    display: inline-block;
    background-color: #1A73E8;
    color: #ffffff;
    font-weight: 600;
    padding: 14px 24px;
    border-radius: 8px;
    text-decoration: none;
    margin-top: 1rem;
    transition: background-color 0.2s, transform 0.15s;
}

a.cta-button:hover {
    background-color: #0D47A1;
    transform: translateY(-2px);
}

/* FOOTER */
footer {
    margin-top: 4rem;
    padding: 30px 20px;
    text-align: center;
    font-size: 0.95rem;
    color: #888888;
    border-top: 1px solid #eee;
}

footer p {
    width: min(100%, 900px);
    margin: 0 auto;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    header {
        padding: 15px 20px;
    }

    h1 {
        font-size: 1.9rem;
    }

    h2 {
        font-size: 1.4rem;
    }

    header nav {
        gap: 8px;
        flex-wrap: wrap;
    }

    header nav a {
        padding: 8px 9px;
        font-size: 0.95rem;
    }

    header nav a:last-child {
        margin-left: 0;
    }
}

@media (max-width: 480px) {
    main {
        padding: 120px 15px 50px 15px;
    }

    main>p>a[href$="contato/"]:only-child {
        width: 100%;
        text-align: center;
    }
}