.store-assistant {
    position: fixed;
    right: max(20px, env(safe-area-inset-right));
    bottom: max(20px, env(safe-area-inset-bottom));
    z-index: 1001;
    width: min(380px, calc(100vw - 32px));
    pointer-events: none;
    font-size: .9rem;
    line-height: 1.5;
}
.store-assistant [hidden] { display: none; }
.assistant-panel, .assistant-launcher { pointer-events: auto; }
.assistant-panel {
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 110px);
    max-height: calc(100dvh - 110px - env(safe-area-inset-bottom));
    margin-bottom: 12px;
    border: 1px solid #6c958d;
    border-radius: 20px;
    background: #022e28;
    box-shadow: 0 12px 40px #0008;
    overflow: hidden;
}
.assistant-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px; border-bottom: 1px solid var(--glass-border); }
.assistant-heading h2 { font-size: 1.1rem; }
.assistant-heading p { color: var(--text-muted); font-size: .8rem; }
.assistant-close { flex-shrink: 0; width: 44px; height: 44px; border: 0; border-radius: 50%; background: var(--glass); color: white; font-size: 1.7rem; cursor: pointer; }
.assistant-body { padding: 16px; overflow-y: auto; overscroll-behavior: contain; min-height: 0; }
.assistant-topics { display: grid; gap: 8px; margin-top: 16px; }
.assistant-topics button { padding: 10px 12px; min-height: 44px; border: 1px solid #6c958d; border-radius: 12px; background: var(--glass); color: var(--text-color); font: inherit; text-align: left; cursor: pointer; }
.assistant-topics button:hover, .assistant-topics button[aria-pressed="true"] { background: var(--secondary-light); border-color: white; }
.assistant-answer:not(:empty) { margin-top: 16px; padding: 14px; border-radius: 12px; background: #ffffff12; white-space: pre-line; }
.assistant-shortcut { display: inline-block; padding: 12px 4px; color: white; text-decoration: underline; }
.assistant-whatsapp { display: block; flex-shrink: 0; padding: 14px 12px; background: #25d366; color: #032b16; text-align: center; font-weight: 700; }
.assistant-launcher { display: flex; align-items: center; gap: 10px; margin-left: auto; min-height: 52px; padding: 12px 18px; border: 1px solid #6c958d; border-radius: 30px; background: var(--secondary); color: white; font: inherit; font-weight: 700; cursor: pointer; box-shadow: 0 6px 24px #0006; }
.assistant-launcher i { font-size: 1.3rem; }
.assistant-form { flex-shrink: 0; padding: 12px 16px; border-top: 1px solid var(--glass-border); }
.assistant-form label { display: block; margin-bottom: 6px; font-size: .85rem; }
.assistant-input-row { display: flex; gap: 8px; }
.assistant-input-row input { width: 100%; min-width: 0; min-height: 44px; padding: 10px; border: 1px solid #6c958d; border-radius: 10px; background: #021a17; color: white; font: inherit; font-size: 16px; }
.assistant-input-row input::placeholder { color: var(--text-muted); }
.assistant-input-row button { min-height: 44px; padding: 10px 12px; border: 1px solid #6c958d; border-radius: 10px; background: var(--secondary); color: white; font: inherit; cursor: pointer; }
.assistant-input-row input:focus-visible { outline: 2px solid white; outline-offset: 2px; }
.store-assistant :is(button, a):focus-visible { outline: 3px solid white; outline-offset: -4px; }
@media (max-width: 480px) {
    .store-assistant { right: max(16px, env(safe-area-inset-right)); bottom: max(12px, env(safe-area-inset-bottom)); }
}