/* ========================================
   BUTTONS — Interactions
   Clínica Estética Senz
   Botanical Luxury
======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-family: var(--fonte-corpo);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    cursor: pointer;
    transition: background-color var(--dur-fast) var(--ease-out),
                color var(--dur-fast) var(--ease-out),
                transform var(--dur-fast) var(--ease-out),
                box-shadow var(--dur-base) var(--ease-out),
                border-color var(--dur-fast) var(--ease-out);
    border: none;
    text-align: center;
    white-space: nowrap;
    touch-action: manipulation;
}

.btn:focus-visible {
    box-shadow: var(--foco-anel);
    outline: none;
}

/* ── Primary — Champagne ── */
.btn-primario {
    background: var(--cor-acento);
    color: var(--cor-fundo-escuro);
    box-shadow: 0 2px 12px rgba(201, 185, 154, 0.2);
}

.btn-primario:hover {
    background: var(--cor-acento-escuro);
    color: var(--cor-fundo-escuro);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(201, 185, 154, 0.3);
}

/* ── Secondary — Outline ── */
.btn-secundario {
    background: transparent;
    color: var(--cor-primaria);
    border: 1.5px solid var(--cor-primaria);
}

.btn-secundario:hover {
    background: var(--cor-primaria);
    color: var(--cor-branco);
    transform: translateY(-2px);
}

/* ── Outline White ── */
.btn-outline-branco {
    background: transparent;
    color: var(--cor-branco);
    border: 1.5px solid rgba(255, 255, 255, 0.35);
}

.btn-outline-branco:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--cor-branco);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-2px);
}

.btn-outline-branco:focus-visible {
    box-shadow: var(--foco-anel-escuro);
}

/* ── WhatsApp — Compact ── */
.btn-whatsapp {
    background: #25D366;
    color: var(--cor-branco);
    box-shadow: 0 2px 12px rgba(37, 211, 102, 0.2);
    width: auto;
    max-width: 360px;
}

.btn-whatsapp:hover {
    background: #20BA5C;
    color: var(--cor-branco);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.3);
}

/* ── Submit (form only) ── */
.btn-enviar {
    width: 100%;
    padding: 14px;
    background: var(--cor-acento);
    color: var(--cor-fundo-escuro);
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--fonte-corpo);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    touch-action: manipulation;
    transition: background-color var(--dur-fast) var(--ease-out),
                box-shadow var(--dur-base) var(--ease-out);
}

.btn-enviar:hover {
    background: var(--cor-acento-escuro);
    box-shadow: 0 4px 16px rgba(201, 185, 154, 0.25);
}

.btn-enviar:focus-visible {
    box-shadow: var(--foco-anel);
    outline: none;
}

/* ── Button Group ── */
.btn-grupo {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.btn-grupo.centro {
    justify-content: center;
}

/* ── WhatsApp Float ── */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999;
    width: 56px;
    height: 56px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
    transition: transform var(--dur-fast) var(--ease-out),
                box-shadow var(--dur-base) var(--ease-out);
    animation: pulso 2.5s ease-in-out infinite;
    touch-action: manipulation;
}

.whatsapp-float:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 28px rgba(37, 211, 102, 0.4);
    color: white;
}

.whatsapp-float:focus-visible {
    box-shadow: 0 0 0 3px #fff, 0 0 0 5px #25D366;
    outline: none;
}

/* ── WhatsApp Tooltip ── */
.whatsapp-tooltip {
    position: absolute;
    right: 68px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--cor-fundo-escuro);
    color: var(--cor-fundo-alt);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--dur-fast) var(--ease-out),
                visibility var(--dur-fast) var(--ease-out);
    pointer-events: none;
    box-shadow: var(--sombra-md);
}

.whatsapp-tooltip::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
    border-left: 6px solid var(--cor-fundo-escuro);
}

.whatsapp-tooltip.visivel {
    opacity: 1;
    visibility: visible;
}

/* ── Back to Top ── */
.voltar-topo {
    position: fixed;
    bottom: 24px;
    right: 92px;
    z-index: 998;
    width: 40px;
    height: 40px;
    background: var(--cor-branco);
    border: 1px solid rgba(143, 181, 168, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cor-primaria);
    font-size: 0.85rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--dur-base) var(--ease-out),
                visibility var(--dur-base) var(--ease-out),
                transform var(--dur-fast) var(--ease-out),
                background-color var(--dur-fast) var(--ease-out),
                color var(--dur-fast) var(--ease-out);
    box-shadow: var(--sombra-sm);
    touch-action: manipulation;
}

.voltar-topo.visivel {
    opacity: 1;
    visibility: visible;
}

.voltar-topo:hover {
    background: var(--cor-primaria);
    color: var(--cor-branco);
    transform: translateY(-2px);
}

.voltar-topo:focus-visible {
    box-shadow: var(--foco-anel);
    outline: none;
}