/**
 * Design System - Checklist Component
 *
 * Componente de checklist dinâmico para formulários stepper.
 * Renderiza perguntas agrupadas com opções de resposta (radio)
 * e campo de observação condicional.
 *
 * Padrão Arenito: 14px body, 40px inputs, --color-bg-secondary, --color-border
 *
 * @version 1.0.0
 * @date 2026-04-02
 */

/* ============================================================
   CONTAINER PRINCIPAL
   ============================================================ */

.checklist {
    position: relative;
    width: 100%;
    box-sizing: border-box;
}

/* Expande o checklist para ocupar toda a largura do container principal */
.step-layout-1col .form-group:has(.checklist) {
    max-width: none;
    width: 100%;
}

/* ============================================================
   ALERTA INFORMATIVO
   ============================================================ */

.checklist-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    margin-bottom: 20px;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: var(--font-weight-regular);
    line-height: 22px;
    background: var(--color-accent-100);
    color: var(--color-accent-400);
    border: 1px solid var(--color-accent-200);
}

.checklist-info-icon {
    font-size: 20px;
    flex-shrink: 0;
}

/* ============================================================
   ESTADO VAZIO
   ============================================================ */

.checklist-empty {
    text-align: center;
    padding: 48px 24px;
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
}

.checklist-empty-icon {
    font-size: 48px;
    color: var(--color-border);
    margin-bottom: 16px;
}

.checklist-empty-title {
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    margin: 0 0 8px;
}

.checklist-empty-text {
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--color-text-muted);
    max-width: 420px;
    margin: 0 auto;
    line-height: 22px;
}

/* ============================================================
   LOADING
   ============================================================ */

.checklist-loading {
    text-align: center;
    padding: 40px 16px;
}

.checklist-loading-spinner {
    width: 28px;
    height: 28px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent-400);
    border-radius: 50%;
    animation: checklist-spin 0.8s linear infinite;
    margin: 0 auto 16px;
}

@keyframes checklist-spin {
    to { transform: rotate(360deg); }
}

.checklist-loading-text {
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--color-text-muted);
}

/* ============================================================
   GRUPO (agrupamento por checklist/programa)
   ============================================================ */

.checklist-group {
    margin-bottom: 20px;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.checklist-group:last-child {
    margin-bottom: 0;
}

.checklist-group-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border-light);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.checklist-group-icon {
    font-size: 20px;
    color: var(--color-accent-400);
    flex-shrink: 0;
}

.checklist-group-title {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.checklist-group-badge {
    font-size: 12px;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-muted);
    background: var(--color-bg-tertiary);
    padding: 2px 10px;
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.checklist-group-badge--required {
    color: var(--color-danger);
    background: var(--color-danger-light);
}

/* ============================================================
   PERGUNTA
   ============================================================ */

.checklist-question {
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border-light);
    transition: background var(--transition-fast);
}

.checklist-question:last-child {
    border-bottom: none;
}

.checklist-question-header {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
}

.checklist-question-number {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 28px;
    background: var(--color-accent-100);
    color: var(--color-accent-400);
    border-radius: var(--radius-full);
    font-family: var(--font-body);
    font-size: 12px;
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.checklist-question.is-answered .checklist-question-number {
    background: var(--color-success-light);
    color: var(--color-success);
}

.checklist-question-text {
    flex: 1;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    line-height: 24px;
}

.checklist-question-destaque {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-family: var(--font-body);
    font-size: 11px;
    font-weight: var(--font-weight-medium);
    color: var(--color-warning-dark);
    background: var(--color-warning-light);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.checklist-question-destaque-icon {
    font-size: 14px;
}

/* ============================================================
   OPÇÕES DE RESPOSTA (radio buttons estilizados)
   ============================================================ */

.checklist-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-left: 40px;
}

.checklist-option {
    position: relative;
}

.checklist-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checklist-option-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: var(--font-weight-regular);
    line-height: 24px;
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

.checklist-option-label:hover {
    border-color: var(--color-accent-300);
    background: var(--color-accent-100);
}

/* Selecionado - padrão (azul/accent) */
.checklist-option input[type="radio"]:checked + .checklist-option-label {
    border-color: var(--color-accent-400);
    background: var(--color-accent-100);
    color: var(--color-accent-400);
    font-weight: var(--font-weight-medium);
}

/* Selecionado - variante "não conforme" (vermelho) */
.checklist-option--negative input[type="radio"]:checked + .checklist-option-label {
    border-color: var(--color-danger);
    background: var(--color-danger-light);
    color: var(--color-danger);
}

/* Ícone de check dentro da label */
.checklist-option-check {
    display: none;
    width: 16px;
    height: 16px;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-400);
    color: #fff;
    border-radius: 50%;
    font-size: 11px;
    flex-shrink: 0;
}

.checklist-option input[type="radio"]:checked + .checklist-option-label .checklist-option-check {
    display: flex;
}

.checklist-option--negative input[type="radio"]:checked + .checklist-option-label .checklist-option-check {
    background: var(--color-danger);
}

/* Focus visible */
.checklist-option input[type="radio"]:focus-visible + .checklist-option-label {
    outline: 2px solid var(--color-accent-300);
    outline-offset: 2px;
}

/* ============================================================
   CAMPO DE OBSERVAÇÃO
   ============================================================ */

.checklist-observation {
    margin-top: 12px;
    margin-left: 40px;
    display: none;
}

.checklist-observation.is-visible {
    display: block;
}

.checklist-observation-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-body);
    font-size: 12px;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-muted);
    margin-bottom: 6px;
}

.checklist-observation-label-icon {
    font-size: 14px;
}

.checklist-observation-input {
    width: 100%;
    min-height: 64px;
    padding: 8px 12px;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: var(--font-weight-regular);
    line-height: 24px;
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    resize: vertical;
    outline: none;
    transition: border-color var(--transition-fast);
    box-sizing: border-box;
}

.checklist-observation-input::placeholder {
    color: var(--color-text-muted);
    opacity: 1;
}

.checklist-observation-input:focus {
    border-color: var(--color-neutral-500);
}

/* ============================================================
   DARK MODE
   ============================================================ */

.dark .checklist-info,
[data-theme="dark"] .checklist-info {
    background: rgba(77, 145, 245, 0.15);
    border-color: var(--color-neutral-600);
    color: var(--color-accent-300);
}

.dark .checklist-empty,
[data-theme="dark"] .checklist-empty {
    border-color: var(--color-neutral-600);
}

.dark .checklist-group,
[data-theme="dark"] .checklist-group {
    border-color: var(--color-neutral-600);
}

.dark .checklist-group-header,
[data-theme="dark"] .checklist-group-header {
    background: var(--color-neutral-700);
    border-bottom-color: var(--color-neutral-600);
}

.dark .checklist-question,
[data-theme="dark"] .checklist-question {
    border-bottom-color: var(--color-neutral-600);
}

.dark .checklist-option-label,
[data-theme="dark"] .checklist-option-label {
    background: var(--color-neutral-700);
    border-color: var(--color-neutral-600);
    color: var(--color-neutral-300);
}

.dark .checklist-option-label:hover,
[data-theme="dark"] .checklist-option-label:hover {
    background: var(--color-neutral-600);
}

.dark .checklist-option input[type="radio"]:checked + .checklist-option-label,
[data-theme="dark"] .checklist-option input[type="radio"]:checked + .checklist-option-label {
    background: rgba(77, 145, 245, 0.15);
    border-color: var(--color-accent-300);
    color: var(--color-accent-300);
}

.dark .checklist-option--negative input[type="radio"]:checked + .checklist-option-label,
[data-theme="dark"] .checklist-option--negative input[type="radio"]:checked + .checklist-option-label {
    background: rgba(201, 10, 10, 0.15);
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.dark .checklist-observation-input,
[data-theme="dark"] .checklist-observation-input {
    background: var(--color-neutral-700);
    border-color: var(--color-neutral-600);
    color: var(--color-neutral-300);
}

/* ============================================================
   RESPONSIVO
   ============================================================ */

@media (max-width: 768px) {
    .checklist-options {
        margin-left: 0;
        flex-direction: column;
    }

    .checklist-option-label {
        width: 100%;
        justify-content: center;
    }

    .checklist-observation {
        margin-left: 0;
    }

    .checklist-group-header {
        padding: 12px 16px;
    }

    .checklist-question {
        padding: 14px 16px;
    }
}

/* ============================================================
   ACESSIBILIDADE
   ============================================================ */

@media (prefers-contrast: high) {
    .checklist-option-label {
        border-width: 2px;
    }

    .checklist-group {
        border-width: 2px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .checklist-loading-spinner {
        animation: none;
    }

    .checklist-option-label,
    .checklist-question,
    .checklist-question-number {
        transition: none;
    }
}