/* Botão "Melhorar com NIA" injetado em todo textarea. Niagro.Portaria (tema dark). */
.ai-improve-wrapper {
    position: relative;
    display: flex;
    align-items: stretch;
    width: 100%;
}

.ai-improve-wrapper > textarea {
    flex: 1;
}

.ai-improve-btn {
    position: absolute;
    z-index: 3;
    border: 0;
    padding: 0;
    margin: 0;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: transparent;
    color: var(--bs-secondary-color, #adb5bd);
    opacity: 0.6;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: opacity 0.15s ease, color 0.15s ease, background-color 0.15s ease, transform 0.15s ease;
    line-height: 1;
}

.ai-improve-btn:hover,
.ai-improve-btn:focus-visible {
    opacity: 1;
    color: var(--bs-primary, #6ea8fe);
    background-color: rgba(110, 168, 254, 0.12);
    outline: none;
}

.ai-improve-btn:active {
    transform: scale(0.94);
}

.ai-improve-btn[disabled] {
    opacity: 0.35;
    cursor: not-allowed;
}

.ai-improve-btn i {
    font-size: 1rem;
}

/* Posicionamento: canto inferior direito para multilinha, centralizado para uma linha. */
.ai-improve-wrapper.ai-improve--multiline .ai-improve-btn {
    bottom: 8px;
    right: 8px;
}

.ai-improve-wrapper.ai-improve--single .ai-improve-btn {
    top: 50%;
    right: 8px;
    transform: translateY(-50%);
}

.ai-improve-wrapper.ai-improve--single .ai-improve-btn:active {
    transform: translateY(-50%) scale(0.94);
}

/* Padding para não sobrepor com texto. */
.ai-improve-wrapper.ai-improve--multiline > textarea {
    padding-right: 36px;
    padding-bottom: 36px;
}

.ai-improve-wrapper.ai-improve--single > textarea {
    padding-right: 40px;
}

/* Animação de carregamento. */
.ai-improve-btn.is-loading i {
    animation: ai-improve-spin 0.8s linear infinite;
}

.ai-improve-btn.is-loading i[data-icon="loading"] {
    animation: ai-improve-spin 0.8s linear infinite;
}

@keyframes ai-improve-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Overlay enquanto processa. */
.ai-improve-wrapper.is-processing > textarea {
    opacity: 0.7;
    pointer-events: none;
}

/* Menu flutuante de seleção de estilo (tema dark) */
.ai-style-menu {
    position: absolute;
    z-index: 9999;
    background: var(--bs-body-bg, #212529);
    border: 1px solid var(--bs-border-color, #495057);
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
    padding: 4px;
    display: flex;
    flex-direction: column;
    min-width: 130px;
    animation: ai-style-menu-in 0.12s ease;
}

@keyframes ai-style-menu-in {
    from { opacity: 0; transform: translateY(4px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.ai-style-item {
    background: transparent;
    border: 0;
    border-radius: 7px;
    padding: 7px 14px;
    text-align: left;
    font-size: 0.875rem;
    color: var(--bs-body-color, #dee2e6);
    cursor: pointer;
    transition: background-color 0.1s ease, color 0.1s ease;
    white-space: nowrap;
}

.ai-style-item:hover {
    background-color: rgba(110, 168, 254, 0.12);
    color: var(--bs-primary, #6ea8fe);
}

.ai-style-item.active {
    background-color: rgba(110, 168, 254, 0.15);
    color: var(--bs-primary, #6ea8fe);
    font-weight: 600;
}