/* Calculators CSS - Design Refinado */

.calc-section {
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-sm);
    position: relative;
    /* Contexto para o popover */
}

.calc-header {
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) 0;
    user-select: none;
}

.calc-header:hover {
    color: var(--color-text);
}

.calc-list {
    list-style: none;
    padding-left: var(--spacing-sm);
    margin-top: var(--spacing-xs);
}

.calc-item {
    position: relative;
    /* Ponto de ancoragem para cada item */
}

.calc-btn {
    display: block;
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 6px 0;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    cursor: pointer;
    font-family: inherit;
    transition: color 0.2s;
}

.calc-btn:hover,
.calc-btn.active {
    color: var(--color-text);
    text-decoration: none;
    font-weight: bold;
    background: transparent;
}

/* POPOVER - Substitui o Modal */
.calc-popover {
    position: absolute;
    top: 0;
    left: 100%;
    /* Sai para a direita do menu */
    margin-left: var(--spacing-lg);
    width: 300px;
    background: var(--color-bg);
    border: 1px solid var(--color-text);
    padding: var(--spacing-lg);
    box-shadow: 10px 10px 0 rgba(0, 0, 0, 0.05);
    /* Sombra dura minimalista */
    z-index: 100;
    opacity: 0;
    transform: translateX(-10px);
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.calc-popover.visible {
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
}

/* Seta indicando origem */
.calc-popover::before {
    content: '';
    position: absolute;
    top: 20px;
    left: -6px;
    width: 10px;
    height: 10px;
    background: var(--color-bg);
    border-left: 1px solid var(--color-text);
    border-bottom: 1px solid var(--color-text);
    transform: rotate(45deg);
}

.calc-popover h2 {
    font-family: var(--font-family);
    /* Serif */
    font-size: 1.1rem;
    font-weight: normal;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-bottom: 1px solid var(--color-text);
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    white-space: nowrap;
    /* Impede quebra de linha */
    /* width: 100%; removido para deixar natural */
    display: block;
    line-height: 1.2;
}

/* FORMULÁRIO MINIMALISTA */
.calc-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.input-group label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.input-group input {
    padding: var(--spacing-xs) 0;
    font-size: 1rem;
    border: none;
    border-bottom: 1px solid var(--color-border);
    background: transparent;
    color: var(--color-text);
    font-family: var(--font-mono);
    border-radius: 0;
    width: 100%;
}

/* Inputs apenas com linha base */
.input-group select {
    padding: var(--spacing-xs) 0;
    font-size: 1rem;
    border: none;
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-mono);
    border-radius: 0;
    width: 100%;
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0 center;
    background-size: 1em;
    padding-right: 1.5em;
    /* Espaço para a seta */
}

/* Dark Mode: Select com seta branca e fundo escuro */
body.dark-mode .input-group select {
    filter: none;
    /* Remove inversão que causava fundo branco */
    background-color: var(--color-bg);
    color: var(--color-text);
    /* SVG com stroke branco (%23ffffff) */
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
}

/* Garante que as opções do select também fiquem escuras */
body.dark-mode option {
    background-color: var(--color-bg);
    color: var(--color-text);
}

/* Reverte a inversão para o texto e fundo para que fiquem corretos, 
   mas options nativos são difíceis de estilizar. 
   Melhor estratégia: SVG com stroke currentColor e color correta. 
   O SVG atual usa stroke='currentColor', então ele deve herdar a cor do texto.
   Se a cor do texto muda no dark mode, o SVG muda junto.
   Não precisa de filter invert se usar currentColor.
*/

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-bottom-color: var(--color-text);
}

/* RESULTADO REFINADO */
.calc-result {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    font-family: var(--font-family);
    /* Serif */
    font-style: italic;
    font-size: 1.1rem;
    color: var(--color-text);
    line-height: 1.6;
    min-height: 2rem;
}

.calc-result strong {
    font-family: var(--font-mono);
    font-style: normal;
    font-size: 1.2rem;
    font-weight: bold;
}

/* AÇÕES */
.popover-footer {
    margin-top: var(--spacing-lg);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

.popover-btn {
    background: none;
    border: 1px solid var(--color-text);
    color: var(--color-text);
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.2s;
}

.popover-btn:hover {
    background: var(--color-text);
    color: var(--color-bg);
}

.popover-btn.btn-close {
    border-color: transparent;
    color: var(--color-text-muted);
}

.popover-btn.btn-close:hover {
    background: none;
    color: var(--color-error);
    /* Use a subtle dark red or just black */
    text-decoration: underline;
}

/* Ajustes para Mobile */
@media (max-width: 768px) {
    .calc-popover {
        position: fixed;
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        width: 100%;
        margin: 0;
        border: none;
        border-top: 1px solid var(--color-text);
        transform: translateY(100%);
        box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.1);
    }

    .calc-popover::before {
        display: none;
    }

    .calc-popover.visible {
        transform: translateY(0);
    }
}