/* ═══════════════════════════════════════════════════════════════
   FAB público inferior — assistente mobile
   Mantém apenas ações essenciais, com altura estável e safe-area.
   ═══════════════════════════════════════════════════════════════ */

.pub-fab-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1050;
    display: flex;
    align-items: stretch;
    min-height: calc(57px + env(safe-area-inset-bottom, 0px));
    padding-bottom: env(safe-area-inset-bottom, 0px);
    background: rgba(6,13,24,.94);
    border-top: 1px solid rgba(255,255,255,.08);
    box-shadow:
        0 -1px 0 rgba(255,255,255,.05),
        0 -5px 24px rgba(0,0,0,.52),
        0 -18px 50px rgba(0,0,0,.38);
    backdrop-filter: blur(18px) saturate(160%);
    -webkit-backdrop-filter: blur(18px) saturate(160%);
    transition: transform .25s cubic-bezier(.4,0,.2,1), opacity .25s cubic-bezier(.4,0,.2,1);
    will-change: transform, opacity;
}

.pub-fab-btn {
    position: relative;
    min-width: 44px;
    min-height: 57px;
    flex: 1 1 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 8px 4px 10px;
    color: #6b85a3;
    background: transparent;
    border: 0;
    text-decoration: none;
    overflow: hidden;
    line-height: 1;
    -webkit-tap-highlight-color: transparent;
    transition: color .16s ease, background .16s ease, transform .16s ease;
}

.pub-fab-btn i {
    display: block;
    font-size: 21px;
    line-height: 1;
    transition: transform .16s ease;
}

.pub-fab-btn span {
    display: block;
    max-width: 100%;
    font-size: 12px;
    font-weight: 650;
    line-height: 1;
    letter-spacing: 0;
    white-space: nowrap;
}

.pub-fab-btn:hover,
.pub-fab-btn:focus-visible {
    color: #f0f6ff;
    background: rgba(255,255,255,.055);
}

.pub-fab-btn.pub-fab-active::after {
    content: '';
    position: absolute;
    top: 0;
    left: 24%;
    right: 24%;
    height: 2px;
    border-radius: 0 0 3px 3px;
    background: currentColor;
}

.pub-fab-btn.pub-fab-active i {
    transform: scale(1.08);
}

.pub-fab-exp {
    flex-grow: 1.26;
    color: #f0fbff;
    background: linear-gradient(135deg, rgba(33,150,243,.22), rgba(13,207,176,.14));
}

.pub-fab-exp::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(180deg, rgba(255,255,255,.055), transparent 58%);
}

.pub-fab-exp.pub-fab-active,
.pub-fab-exp:hover,
.pub-fab-exp:focus-visible {
    color: #fff;
    background: linear-gradient(135deg, rgba(33,150,243,.30), rgba(13,207,176,.20));
}

.pub-fab-exp.pub-fab-active::after,
.pub-fab-exp::after {
    content: '';
    position: absolute;
    top: 0;
    left: 18%;
    right: 18%;
    height: 2px;
    border-radius: 0 0 3px 3px;
    background: linear-gradient(90deg, #38bdf8, #0dcfb0);
}

.pub-fab-ag.pub-fab-active,
.pub-fab-ag:hover,
.pub-fab-ag:focus-visible {
    color: #fbbf24;
    background: rgba(251,191,36,.08);
}

.pub-fab-portal.pub-fab-active,
.pub-fab-portal:hover,
.pub-fab-portal:focus-visible {
    color: #0dcfb0;
    background: rgba(13,207,176,.075);
}

.pub-fab-wpp:hover,
.pub-fab-wpp:focus-visible {
    color: #4ade80;
    background: rgba(74,222,128,.075);
}

.pub-fab-bar.pub-fab-hidden {
    transform: translateY(100%);
    opacity: 0;
    pointer-events: none;
}

@media (max-width: 340px) {
    .pub-fab-btn {
        gap: 3px;
        padding-left: 2px;
        padding-right: 2px;
    }
    .pub-fab-btn i {
        font-size: 20px;
    }
    .pub-fab-btn span {
        font-size: 12px;
    }
}

@media (min-width: 901px) {
    .pub-fab-bar {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .pub-fab-bar,
    .pub-fab-btn,
    .pub-fab-btn i {
        transition: none;
    }
}