/* =========================================================
   Layout: Footer — Editorial escuro premium
   ========================================================= */

.site-footer {
    background: #131313;
    color: #fff;
    margin-top: var(--space-16);
    border-top: 4px solid var(--color-accent);
    position: relative;
}

/* Linha de destaque visual no topo do footer */
.site-footer::before {
    content: '';
    position: absolute;
    top: 4px;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(255,255,255,0.06);
}

/* ── Disclosure Amazon ──────────────────────────────────── */
.footer-disclosure {
    background: #0C0C0C;
    border-bottom: 1px solid #222;
    padding-block: var(--space-4);
}

.footer-disclosure__text {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    font-size: var(--text-xs);
    color: #555;
    line-height: var(--leading-normal);
    max-width: 860px;
}

.footer-disclosure__text svg { flex-shrink: 0; margin-top: 1px; color: #444; }

/* ── Newsletter banner no footer ───────────────────────── */
.footer-newsletter {
    background: linear-gradient(135deg, var(--color-accent) 0%, #990020 100%);
    padding-block: var(--space-8);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-newsletter__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-8);
    flex-wrap: wrap;
}

.footer-newsletter__text { display: flex; flex-direction: column; gap: var(--space-2); }

.footer-newsletter__title {
    font-size: var(--text-xl);
    font-weight: var(--font-extrabold);
    color: #fff;
    letter-spacing: -0.02em;
    margin: 0;
}

.footer-newsletter__subtitle {
    font-size: var(--text-sm);
    color: rgba(255,255,255,0.75);
    margin: 0;
}

.footer-newsletter__form {
    display: flex;
    gap: var(--space-2);
    flex: 1;
    max-width: 460px;
    min-width: 280px;
}

.footer-newsletter__input {
    flex: 1;
    height: 46px;
    padding: 0 var(--space-4);
    border-radius: var(--radius-md);
    border: 2px solid rgba(255,255,255,0.3);
    background: rgba(255,255,255,0.12);
    color: #fff;
    font-size: var(--text-sm);
    font-family: var(--font-sans);
    outline: none;
    transition: border-color var(--transition-fast), background var(--transition-fast);
}

.footer-newsletter__input::placeholder { color: rgba(255,255,255,0.5); }
.footer-newsletter__input:focus {
    border-color: rgba(255,255,255,0.7);
    background: rgba(255,255,255,0.18);
}

.footer-newsletter__btn {
    height: 46px;
    padding: 0 var(--space-6);
    background: #fff;
    color: var(--color-accent);
    font-size: var(--text-sm);
    font-weight: var(--font-black);
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    white-space: nowrap;
    transition: background var(--transition-fast), transform var(--transition-fast);
    letter-spacing: 0.02em;
}

.footer-newsletter__btn:hover {
    background: #F5F5F5;
    transform: translateY(-1px);
}

/* ── Widgets do footer ──────────────────────────────────── */
.footer-widgets {
    padding-block: var(--space-12);
    border-bottom: 1px solid #222;
}

.footer-widgets__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-10);
    align-items: start;
}

/* Coluna 1: logo + descrição */
.footer-brand { display: flex; flex-direction: column; gap: var(--space-4); }

.footer-brand__logo {
    display: inline-flex;
    text-decoration: none;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: var(--font-black);
    letter-spacing: -0.04em;
    line-height: 1;
}

.footer-brand__logo .site-logo__tech    { color: #fff; }
.footer-brand__logo .site-logo__advisor { color: var(--color-accent); }

.footer-brand__logo {
    flex-direction: column;
    align-items: flex-start;
    gap: 3px;
}

.footer-brand__logo-name {
    display: flex;
    align-items: baseline;
    gap: 0;
}

.footer-brand__tagline {
    font-size: 10px;
    font-weight: var(--font-bold);
    letter-spacing: 0.12em;
    color: #555;
    text-transform: uppercase;
}

.footer-brand__desc {
    font-size: var(--text-sm);
    color: #666;
    line-height: var(--leading-normal);
    max-width: 260px;
}

.footer-brand__social {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-top: var(--space-2);
}

.footer-social__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    color: #777;
    background: #222;
    text-decoration: none;
    transition: all var(--transition-fast);
    border: 1px solid #2E2E2E;
}

.footer-social__link:hover {
    color: #fff;
    background: var(--color-accent);
    border-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-red);
}

/* Colunas de links */
.footer-widgets__col .widget__title {
    color: #fff;
    border-color: var(--color-accent);
    font-size: var(--text-xs);
    padding-bottom: var(--space-3);
    margin-bottom: var(--space-4);
}

.footer-widgets__col .widget__title::before {
    background: var(--color-accent);
}

/* ── Aviso de independência editorial ───────────────────── */
.footer-independence {
    background: #111;
    border-top: 1px solid #222;
    padding-block: var(--space-3);
}

.footer-independence__text {
    font-size: var(--text-xs);
    color: #555;
    text-align: center;
    line-height: var(--leading-normal);
    margin: 0 auto;
    max-width: 600px;
}

/* ── Footer bottom ──────────────────────────────────────── */
.footer-bottom {
    padding-block: var(--space-5);
    background: #0C0C0C;
}

.footer-bottom__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.footer-bottom__copy {
    font-size: var(--text-xs);
    color: #444;
    text-align: center;
    flex: 1;
}

.footer-bottom__links {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.footer-bottom__links a {
    font-size: var(--text-xs);
    color: #555;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-bottom__links a:hover { color: #fff; }

/* ── Responsivo ─────────────────────────────────────────── */
@media (max-width: 1024px) {
    .footer-widgets__grid { grid-template-columns: 1fr 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; flex-direction: row; align-items: flex-start; flex-wrap: wrap; }
    .footer-brand__desc { max-width: 100%; }
}

@media (max-width: 768px) {
    .footer-newsletter__inner { flex-direction: column; gap: var(--space-5); }
    .footer-newsletter__form { max-width: 100%; width: 100%; }
    .footer-widgets__grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
    .footer-bottom__inner { flex-direction: column; text-align: center; gap: var(--space-3); }
}

@media (max-width: 480px) {
    .footer-widgets__grid { grid-template-columns: 1fr; }
    .footer-newsletter__form { flex-direction: column; }
    .footer-newsletter__btn { width: 100%; }
}