/* Header — tema escuro */

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

body {
    font-family: var(--font-sans);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.site-header .header-inner {
    max-width: 1000px;
    margin: 0 auto;
    padding: 18px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.2rem;
    color: var(--text-primary);
    text-decoration: none;
}

.logo:hover {
    color: var(--accent);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 10px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
}

.nav-toggle-bar {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
}

.nav-links a:hover {
    color: var(--accent);
}

.nav-login {
    color: var(--accent) !important;
    font-weight: 600;
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        padding: 16px;
        background: var(--bg-card);
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
        display: none;
    }

    .nav-links.is-open {
        display: flex;
    }

    .nav-links a {
        padding: 14px 0;
        width: 100%;
        font-size: 1rem;
        border-bottom: 1px solid var(--border);
    }

    .nav-links a:last-child {
        border-bottom: none;
    }

    .site-header .header-inner {
        position: relative;
        padding: 14px 16px;
    }

    .logo {
        font-size: 1rem;
        max-width: 60%;
    }
}