/*
 * Clareza Acadêmica — Desafios (/simulados/desafios/).
 * Escopo exclusivo da rota; raiz .listar-desafios-clarity-page.
 *
 * Substitui static/css/desafio-listar.css, que era global (nomes como .pill,
 * .search-bar, .circle e .empty-state ficavam soltos no documento inteiro).
 *
 * Desafio é modo de jogo e continua com sotaque próprio: o roxo #764ba2 (o
 * "roxo complementar" da paleta) identifica o modo, enquanto a primária #667eea
 * responde pelas ações. Estrelas seguem âmbar — é a moeda da trilha.
 *
 * Não vieram os blocos sem HTML correspondente em listar_desafios.html:
 * .desafio-card-progress*, .desafio-card-actions, .btn-des-play* e
 * .des-badge-andamento estilizavam controles que nenhum cartão renderiza.
 */

:root {
    --des-primary: #667eea;
    --des-primary-hover: #545fcb;
    --des-primary-soft: #f0f1ff;
    --des-mode: #764ba2;
    --des-mode-soft: #f4effa;
    --des-star: #f59e0b;
    --des-green: #10b981;
    --des-red: #ef4444;
    --des-ink: #1f2937;
    --des-gray: #6b7280;
    --des-subtle: #9ca3af;
    --des-light: #f9fafb;
    --des-border: #e5e7eb;
    --des-border-strong: #d8dce5;
    --des-radius: 14px;
}

body:has(.listar-desafios-clarity-page) {
    overflow-x: hidden;
    background:
        radial-gradient(circle at 50% 0%, rgba(118, 75, 162, 0.07), transparent 32rem),
        #f6f7fb;
}

.listar-desafios-clarity-page {
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--des-ink);
}

/* =========================================================================
   Hero
   =========================================================================
   Era uma faixa em degradê roxo escuro, centralizada, com cantos arredondados
   embaixo. A faixa não sangrava de ponta a ponta: a base.html já envolve o
   bloco content num .container.mt-4, e a própria .filter-section ainda
   reaplicava max-width:1200px + padding por cima disso. */
.desafios-hero {
    display: grid;
    grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.2fr);
    align-items: center;
    column-gap: clamp(1.25rem, 3vw, 2.5rem);
    row-gap: 0.7rem;
    padding: 1rem 1.15rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--des-border);
    border-radius: 20px;
    background: linear-gradient(110deg, var(--des-mode-soft) 0%, #ffffff 34%);
    box-shadow: 0 12px 32px rgba(31, 41, 55, 0.07);
    color: var(--des-ink);
}

.desafios-hero .hero-heading {
    grid-column: 1;
    grid-row: 1;
    display: flex;
    align-items: center;
    gap: 0.85rem;
    margin-bottom: 0;
}

.desafios-hero .hero-icon {
    display: grid;
    flex: 0 0 auto;
    width: 48px;
    height: 48px;
    place-items: center;
    border-radius: var(--des-radius);
    background: var(--des-mode-soft);
    color: var(--des-mode);
    font-size: 1.15rem;
}

.desafios-hero .hero-eyebrow {
    display: block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--des-mode);
}

.desafios-hero h1 {
    margin: 0;
    font-size: 1.6rem;
    font-weight: 750;
    letter-spacing: -0.02em;
    color: var(--des-ink);
}

.desafios-hero .hero-subtitle {
    grid-column: 2;
    grid-row: 1;
    margin: 0;
    max-width: none;
    font-size: 0.9rem;
    line-height: 1.55;
    color: var(--des-gray);
}

/* ===== Placar do jogador ===== */
.desafios-hero .hero-stats {
    grid-column: 2;
    grid-row: 2;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 0.6rem;
    margin-top: 0;
}

.desafios-hero .hero-stat {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
    min-width: 0;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--des-border);
    border-radius: var(--des-radius);
    background: var(--des-light);
}

.desafios-hero .hero-stat-value {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 1.1rem;
    font-weight: 800;
    line-height: 1.15;
    color: var(--des-ink);
}

.desafios-hero .hero-stat-value .fa-star { color: var(--des-star); font-size: 0.8em; }

.desafios-hero .hero-stat-label {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--des-gray);
}

.desafios-hero .hero-stat-label i { color: var(--des-subtle); }

.desafios-hero .hero-motivational {
    grid-column: 1;
    grid-row: 2;
    display: inline-flex;
    align-items: center;
    justify-self: start;
    gap: 0.4rem;
    margin: 0;
    padding: 0.4rem 0.8rem;
    border-radius: 999px;
    background: var(--des-mode-soft);
    color: #5b3a80;
    font-size: 0.82rem;
    font-weight: 600;
}

/* =========================================================================
   Filtros
   ========================================================================= */
.filter-section { margin-bottom: 1.5rem; }

.search-bar {
    position: relative;
    display: flex;
    gap: 0.5rem;
    max-width: 560px;
    margin-bottom: 0.85rem;
}

.search-field { position: relative; flex: 1; min-width: 0; }

.search-icon {
    position: absolute;
    top: 50%;
    left: 0.9rem;
    transform: translateY(-50%);
    color: var(--des-subtle);
    font-size: 0.85rem;
    pointer-events: none;
}

.search-input {
    width: 100%;
    min-height: 44px;
    padding: 0.6rem 0.9rem 0.6rem 2.4rem;
    border: 1px solid var(--des-border-strong);
    border-radius: 9px;
    background: #ffffff;
    color: var(--des-ink);
    font-size: 0.88rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.search-input::placeholder { color: var(--des-subtle); }

.search-input:focus {
    outline: none;
    border-color: var(--des-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.18);
}

.search-submit {
    min-height: 44px;
    padding: 0 1.15rem;
    border: none;
    border-radius: 9px;
    background: var(--des-primary);
    color: #ffffff;
    font-size: 0.85rem;
    font-weight: 700;
    white-space: nowrap;
    cursor: pointer;
    transition: background 0.2s;
}

.search-submit:hover { background: var(--des-primary-hover); }

.filters-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.category-select-wrapper {
    position: relative;
    flex: 0 1 300px;
}

.select-icon {
    position: absolute;
    top: 50%;
    left: 0.9rem;
    z-index: 1;
    transform: translateY(-50%);
    color: var(--des-mode);
    font-size: 0.82rem;
    pointer-events: none;
}

.category-select {
    width: 100%;
    min-height: 44px;
    padding: 0.55rem 2.3rem 0.55rem 2.4rem;
    border: 1px solid var(--des-border-strong);
    border-radius: 9px;
    background-color: #ffffff;
    color: var(--des-ink);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.9rem center;
    background-size: 12px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.category-select:hover { border-color: var(--des-primary); }

.category-select:focus {
    outline: none;
    border-color: var(--des-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.18);
}

.order-bar {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.order-label {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--des-subtle);
}

.order-pills { display: flex; gap: 0.4rem; }

.pill {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    min-height: 38px;
    padding: 0.35rem 0.85rem;
    border: 1px solid var(--des-border-strong);
    border-radius: 999px;
    background: #ffffff;
    color: var(--des-gray);
    font-size: 0.78rem;
    font-weight: 600;
    white-space: nowrap;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.pill:hover {
    border-color: var(--des-primary);
    background: var(--des-primary-soft);
    color: var(--des-primary-hover);
}

.pill-active {
    border-color: var(--des-primary);
    background: var(--des-primary-soft);
    color: var(--des-primary-hover);
}

.pill i { font-size: 0.7rem; }

/* =========================================================================
   Grade e cartões
   ========================================================================= */
.desafios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 0.85rem;
}

.desafio-card-link {
    display: flex;
    flex-direction: column;
    /* Como item do grid, o padrão min-width:auto impedia a coluna 1fr de
       encolher abaixo do min-content do cartão, estourando o container no
       celular. */
    min-width: 0;
    color: inherit;
    text-decoration: none;
}

.desafio-card-link:hover,
.desafio-card-link:focus {
    color: inherit;
    text-decoration: none;
}

.desafio-card {
    position: relative;
    display: flex;
    flex: 1;
    flex-direction: column;
    border: 1px solid var(--des-border);
    border-radius: var(--des-radius);
    background: #ffffff;
    overflow: hidden;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.desafio-card-link:hover .desafio-card {
    border-color: var(--des-mode);
    box-shadow: 0 4px 16px rgba(118, 75, 162, 0.13);
}

.desafio-card-inner {
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: 0.4rem;
    padding: 1rem;
}

.desafio-card-top {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    overflow: hidden;
}

.desafio-card-emoji {
    display: flex;
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: var(--des-mode-soft);
    font-size: 1rem;
}

.desafio-card-info { flex: 1; min-width: 0; }

.desafio-card-title {
    margin: 0;
    font-size: 0.85rem;
    font-weight: 700;
    line-height: 1.25;
    color: var(--des-ink);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    overflow-wrap: anywhere;
}

.desafio-card-code {
    margin: 0;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.67rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--des-mode);
}

.desafio-card-meta {
    margin: 0;
    font-size: 0.7rem;
    color: var(--des-gray);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ===== Selos ===== */
.desafio-card-badges { display: flex; flex-wrap: wrap; gap: 0.3rem; }

.des-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.22rem;
    padding: 0.15rem 0.45rem;
    border-radius: 8px;
    font-size: 0.67rem;
    font-weight: 600;
}

.des-badge-facil { background: rgba(16, 185, 129, 0.12); color: #047857; }
.des-badge-medio { background: rgba(245, 158, 11, 0.12); color: #b45309; }
.des-badge-dificil { background: rgba(239, 68, 68, 0.12); color: #b91c1c; }
.des-badge-novo { background: var(--des-mode-soft); color: #5b3a80; }
.des-badge-nova { background: var(--des-primary-soft); color: var(--des-primary); }
.des-badge-completo { background: rgba(16, 185, 129, 0.12); color: #047857; }

/* ===== Estrelas ===== */
.desafio-card-stars {
    display: flex;
    align-items: center;
    gap: 0.15rem;
}

.desafio-card-stars .star-earned { color: var(--des-star); font-size: 0.82rem; }
.desafio-card-stars .star-empty { color: #d1d5db; font-size: 0.82rem; }

/* ===== Números do cartão ===== */
.desafio-card-stats {
    display: flex;
    gap: 0.6rem;
    margin-top: auto;
    font-size: 0.72rem;
    color: var(--des-gray);
}

.desafio-card-stats span {
    display: flex;
    align-items: center;
    gap: 0.22rem;
}

.desafio-card-stats .fa-list-ol { color: var(--des-star); }
.desafio-card-stats .fa-users { color: var(--des-mode); }

/* =========================================================================
   Paginação
   ========================================================================= */
.des-pagination-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1.5rem 0 0.5rem;
}

.des-pagination ul {
    display: flex;
    gap: 0.35rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.des-pagination a,
.des-pagination span[aria-current] {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    padding: 0.4rem 0.75rem;
    border: 1px solid var(--des-border-strong);
    border-radius: 9px;
    background: #ffffff;
    color: var(--des-gray);
    font-size: 0.82rem;
    font-weight: 600;
    text-decoration: none;
    transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.des-pagination a:hover {
    border-color: var(--des-primary);
    background: var(--des-primary-soft);
    color: var(--des-primary-hover);
    text-decoration: none;
}

.des-pagination span[aria-current] {
    border-color: var(--des-primary);
    background: var(--des-primary);
    color: #ffffff;
}

.des-page-info {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--des-gray);
}

/* =========================================================================
   Estado vazio
   ========================================================================= */
.empty-state {
    max-width: 520px;
    margin: 0 auto;
    padding: 3rem 1.25rem;
    border: 1px dashed var(--des-border-strong);
    border-radius: 20px;
    background: #ffffff;
    color: var(--des-gray);
    text-align: center;
}

.empty-illustration {
    display: flex;
    width: 72px;
    height: 72px;
    margin: 0 auto 1.1rem;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--des-mode-soft);
    color: var(--des-mode);
    font-size: 1.6rem;
}

.empty-state h2 {
    margin: 0 0 0.5rem;
    font-size: 1.1rem;
    font-weight: 750;
    letter-spacing: -0.01em;
    color: var(--des-ink);
}

.empty-state p {
    max-width: 42ch;
    margin: 0 auto 1.3rem;
    font-size: 0.88rem;
    line-height: 1.6;
}

.empty-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.btn-empty-primary,
.btn-empty-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    min-height: 44px;
    padding: 0.55rem 1.15rem;
    border-radius: 9px;
    font-size: 0.85rem;
    font-weight: 700;
    text-decoration: none;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.btn-empty-primary {
    background: var(--des-primary);
    color: #ffffff;
}

.btn-empty-primary:hover {
    background: var(--des-primary-hover);
    color: #ffffff;
    text-decoration: none;
}

.btn-empty-secondary {
    border: 1px solid var(--des-border-strong);
    background: #ffffff;
    color: var(--des-gray);
}

.btn-empty-secondary:hover {
    border-color: var(--des-primary);
    background: var(--des-primary-soft);
    color: var(--des-primary-hover);
    text-decoration: none;
}

/* =========================================================================
   Responsivo
   ========================================================================= */

/* 📱 Tablet (769–1279) */
@media (min-width: 769px) and (max-width: 1279px) {
    .container { max-width: 100%; padding-left: 0.5rem; padding-right: 0.5rem; }
}
@media (min-width: 769px) and (max-width: 900px) {
    .container { padding-left: 0.2rem; padding-right: 0.2rem; }
}

@media (max-width: 991px) {
    .filters-row { gap: 0.6rem; }
    .category-select-wrapper { flex: 1 1 240px; }
}

@media (max-width: 768px) {
    .container { max-width: 100%; padding-left: 0.25rem; padding-right: 0.25rem; }
    .desafios-hero { padding: 1rem; }
    .desafios-hero h1 { font-size: 1.35rem; }
    .desafios-hero .hero-stat { flex: 1 1 30%; min-width: 0; }
    .filters-row { flex-direction: column; align-items: stretch; }
    .category-select-wrapper { flex: 1 1 auto; }
    .order-bar { flex-wrap: wrap; }
    .desafios-grid { grid-template-columns: 1fr; }
}

@media (max-width: 575px) {
    .desafios-hero {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    .desafios-hero .hero-heading,
    .desafios-hero .hero-subtitle,
    .desafios-hero .hero-stats,
    .desafios-hero .hero-motivational {
        grid-column: 1;
        grid-row: auto;
    }
    .desafios-hero h1 { font-size: 1.2rem; }
    .desafios-hero .hero-icon { width: 42px; height: 42px; font-size: 1rem; }
    .search-bar { flex-direction: column; }
    .desafios-hero .hero-stats { justify-content: flex-start; gap: 0.45rem; }
    .desafios-hero .hero-stat { padding: 0.5rem 0.75rem; }
    .desafios-hero .hero-stat-value { font-size: 1.05rem; }
    .order-pills { width: 100%; }
    .pill { flex: 1; justify-content: center; }
    .empty-actions { flex-direction: column; }
    .btn-empty-primary,
    .btn-empty-secondary { justify-content: center; }
}

/* =========================================================================
   Foco e movimento reduzido
   ========================================================================= */

/* O cartão inteiro é um link: sem foco visível quem navega por teclado
   percorre a listagem às cegas. */
.desafio-card-link:focus-visible,
.search-input:focus-visible,
.search-submit:focus-visible,
.category-select:focus-visible,
.pill:focus-visible,
.btn-empty-primary:focus-visible,
.btn-empty-secondary:focus-visible,
.des-pagination a:focus-visible {
    outline: 3px solid rgba(102, 126, 234, 0.32);
    outline-offset: 2px;
    border-radius: 9px;
}

/* A entrada dos cartões era `opacity: 0` + animação `forwards`, com o atraso
   vindo de um style inline por cartão (até 1100ms no último da página). Com
   animação suprimida — extensão, política do sistema ou falha de carregamento
   — a grade inteira ficava invisível. A animação foi retirada. */
@media (prefers-reduced-motion: reduce) {
    .listar-desafios-clarity-page *,
    .listar-desafios-clarity-page *::before,
    .listar-desafios-clarity-page *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}