/* QEnemSocial - design system
   Mobile-first, minimalista, focado na questão. */

:root {
  --color-bg: #f8f9fa;
  --color-surface: #ffffff;
  /* Paleta extraída da logo (images/logotipo.png), aplicada com moderação:
     azul e dourado carregam a UI; roxo/magenta/turquesa/lima aparecem só
     em toques pontuais (sublinhado do header, barra de progresso, sombras). */
  --color-primary: #009eff;
  --color-primary-dark: #0077c2;
  --color-primary-tint: #e5f4ff;
  --color-text: #2d3748;
  --color-text-muted: #718096;
  --color-border: #e2e8f0;
  --color-success: #2ecc71;
  --color-success-bg: #eafaf1;
  --color-danger: #ef4444;
  --color-danger-bg: #fdecec;
  --color-accent: #ffd21a;
  --color-accent-bg: #fff8e1;
  --color-purple: #321080;
  --color-purple-tint: #ddd0f5;
  --color-magenta: #8b19e8;
  --color-lime: #a8f000;
  --color-green-vivid: #36e83f;
  --color-turquoise: #00d6c7;
  --radius-sm: 8px;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(50, 16, 128, 0.07), 0 4px 16px rgba(50, 16, 128, 0.06);
  --tap-min: 44px;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

/* Só a página de estudo (com o chat do Pepito) precisa dessa folga no rodapé. */
body.has-chat {
  padding-bottom: 56px;
}

h1,
h2 {
  line-height: 1.25;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

a {
  color: var(--color-primary);
}

button,
select {
  font-family: inherit;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Header: uma barra única (logo + filtros compartilham o mesmo fundo), mais
   larga que a coluna de leitura do resto do app — uma toolbar de verdade,
   não a logo isolada com um cartão flutuando ao lado. */
.app-header {
  background: linear-gradient(135deg, var(--color-primary-tint), var(--color-accent-bg));
  border-bottom: 3px solid transparent;
  border-image: linear-gradient(90deg, var(--color-accent), var(--color-magenta), var(--color-primary)) 1;
  padding: 14px 0;
}

/* Mais largo que o .container padrão (720px) usado pelo conteúdo — dá à
   barra espaço de sobra para respirar em vez de espremer logo e filtros
   num vão estreito com um buraco de espaço em branco no meio. */
.app-header .container {
  max-width: 1100px;
}

.header-inner {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.app-title {
  margin: 0;
  line-height: 0;
  flex-shrink: 0;
}

.logo-img {
  display: block;
  height: 36px;
  width: auto;
}

/* Sem cartão próprio: o fundo colorido já é o do header inteiro, então os
   filtros só precisam organizar o layout, não "flutuar" como um widget à
   parte. */
.filters-bar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.filter-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.filter-field label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

select {
  min-height: var(--tap-min);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  font-size: 0.95rem;
  background: var(--color-surface);
  color: var(--color-text);
  width: 100%;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

select:focus-visible {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-tint);
  outline: none;
}

.filter-actions {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

/* Botões */
.btn {
  min-height: var(--tap-min);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  border: none;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.05s ease, background 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  box-shadow: 0 2px 8px rgba(0, 158, 255, 0.25);
}

.btn-primary:hover:not(:disabled) {
  box-shadow: 0 4px 12px rgba(0, 158, 255, 0.35);
}

/* Dourado sobre roxo: mesma dupla de cores do sublinhado do header, dando
   ao "Simulado personalizado" uma identidade visual própria (não é só mais
   um botão azul igual ao "Praticar"). */
.btn-accent {
  background: var(--color-accent);
  color: var(--color-purple);
  box-shadow: 0 2px 8px rgba(255, 210, 26, 0.35);
}

.btn-accent:hover:not(:disabled) {
  background: #ffc700;
  box-shadow: 0 4px 12px rgba(255, 210, 26, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-outline:hover:not(:disabled) {
  background: var(--color-primary-tint);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-ghost:hover:not(:disabled) {
  border-color: var(--color-text-muted);
}

.btn-block {
  width: 100%;
}

.btn-link {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  padding: 8px;
  min-height: var(--tap-min);
}

.btn-link:hover {
  color: var(--color-danger);
}

/* Barra de estatísticas: discreta, abaixo do header */
.stats-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 20px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.stat-value {
  font-size: 1.15rem;
  font-weight: 700;
}

#stat-correct {
  color: var(--color-accent);
}

.stats-bar .btn-link {
  margin-left: auto;
}

/* Status */
.status {
  text-align: center;
  color: var(--color-text-muted);
  padding: 12px 20px;
}

.status-error {
  color: var(--color-danger);
  font-weight: 600;
}

.hidden {
  display: none !important;
}

main.container {
  padding-top: 20px;
  padding-bottom: 48px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Card da questão: o elemento principal da tela */
.question-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.question-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.badge {
  background: var(--color-primary-tint);
  color: var(--color-primary);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.progress-bar {
  height: 6px;
  border-radius: 999px;
  background: var(--color-bg);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-lime), var(--color-green-vivid), var(--color-turquoise));
  border-radius: 999px;
  transition: width 0.2s ease;
}

.q-intro {
  margin: 0;
  font-style: italic;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.q-context {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.7;
}

.q-image {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  margin: 12px 0;
  background: var(--color-bg);
}

.alternatives {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.alternative {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
  min-height: var(--tap-min);
  font-size: 1rem;
}

.alternative:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-tint);
}

.alternative input {
  accent-color: var(--color-primary);
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 2px;
}

.alternative-content {
  flex: 1;
}

.alternative-content strong {
  display: inline-block;
  background: var(--color-bg);
  color: var(--color-primary);
  padding: 2px 9px;
  border-radius: 6px;
  font-size: 0.85em;
  margin-right: 8px;
}

.alt-image {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  margin-top: 8px;
}

.alternative.is-correct {
  border-color: var(--color-success);
  background: var(--color-success-bg);
}

.alternative.is-correct .alternative-content strong {
  background: var(--color-success);
  color: white;
}

.alternative.is-correct::after {
  content: "✓";
  margin-left: auto;
  color: var(--color-success);
  font-weight: 700;
  font-size: 1.1rem;
}

.alternative.is-wrong {
  border-color: var(--color-danger);
  background: var(--color-danger-bg);
}

.alternative.is-wrong .alternative-content strong {
  background: var(--color-danger);
  color: white;
}

.alternative.is-wrong::after {
  content: "✕";
  margin-left: auto;
  color: var(--color-danger);
  font-weight: 700;
  font-size: 1.1rem;
}

.feedback {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-align: center;
}

.feedback-correct {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.feedback-wrong {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

.question-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.progress-text {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.results-panel {
  text-align: center;
  gap: 20px;
}

.results-score {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 4px 0;
}

/* Tablet+ */
@media (min-width: 640px) {
  .header-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
  }

  /* Vira uma única barra horizontal compacta: ano, disciplina e os dois
     botões lado a lado, alinhados à direita da logo, dividindo o mesmo
     fundo colorido do header — uma peça só, não dois blocos separados. */
  .filters-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    flex: 1;
    justify-content: flex-end;
    gap: 10px;
  }

  .filter-field {
    min-width: 140px;
  }

  select {
    width: auto;
  }

  .filter-actions {
    grid-column: auto;
    display: flex;
    gap: 8px;
  }

  .nav-row {
    justify-content: center;
    gap: 24px;
  }

  .question-actions {
    flex-direction: column-reverse;
  }
}

/* Chat flutuante (bottom sheet) - Pepito */
/* A folha ocupa o rodapé inteiro; a altura é controlada via JS (arraste livre). */
.chat-sheet {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  width: 100%;
  height: 0;
  background: var(--color-surface);
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
  box-shadow: 0 -8px 28px rgba(50, 16, 128, 0.16);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  will-change: height;
}

/* A lapela é o único elemento visível quando o chat está no rodapé:
   um pequeno "flap" central que acompanha a borda superior da folha. */
.chat-tab {
  all: unset;
  box-sizing: border-box;
  position: fixed;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  z-index: 41;
  width: 84px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border-radius: 18px 18px 0 0;
  box-shadow: 0 -6px 16px rgba(50, 16, 128, 0.16);
  cursor: grab;
  touch-action: none;
  user-select: none;
  will-change: bottom;
}

.chat-tab:active {
  cursor: grabbing;
}

/* Linha ondulada (curvas suaves) que serve de alça de arrasto */
.chat-wave {
  position: absolute;
  top: 9px;
  left: 12px;
  right: 12px;
  height: 8px;
  background-color: var(--color-border);
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='12' viewBox='0 0 40 12'%3E%3Cpath d='M0,6 Q10,0 20,6 T40,6' fill='none' stroke='white' stroke-width='2.5' stroke-linecap='round'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='12' viewBox='0 0 40 12'%3E%3Cpath d='M0,6 Q10,0 20,6 T40,6' fill='none' stroke='white' stroke-width='2.5' stroke-linecap='round'/%3E%3C/svg%3E");
  -webkit-mask-repeat: repeat-x;
  mask-repeat: repeat-x;
  -webkit-mask-position: center;
  mask-position: center;
  -webkit-mask-size: 32px 10px;
  mask-size: 32px 10px;
}

.chat-toggle-icon {
  position: relative;
  margin-top: 10px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.chat-title {
  font-weight: 700;
}

.chat-usage {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.chat-messages {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior-y: contain;
  -webkit-overflow-scrolling: touch;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-message {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  line-height: 1.5;
  white-space: pre-wrap;
}

.chat-message.role-user {
  align-self: flex-end;
  background: var(--color-primary);
  color: white;
  border-bottom-right-radius: 2px;
}

.chat-message.role-assistant {
  align-self: flex-start;
  background: var(--color-purple-tint);
  color: #000;
  border-bottom-left-radius: 2px;
}

.chat-message.role-system {
  align-self: center;
  background: none;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-style: italic;
  text-align: center;
  max-width: 100%;
}

.chat-typing {
  color: var(--color-text-muted);
  font-style: italic;
}

.chat-form {
  display: flex;
  gap: 10px;
  padding: 12px 16px;
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
}

#chat-input {
  flex: 1;
  min-height: var(--tap-min);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-size: 1rem;
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-text);
}

#chat-input:disabled {
  background: var(--color-bg);
  color: var(--color-text-muted);
}

#chat-send-btn {
  flex-shrink: 0;
}

@media (min-width: 1024px) {
  .container {
    max-width: 760px;
  }

  .logo-img {
    height: 48px;
  }

  .q-context {
    font-size: 1.1rem;
  }
}

/* ==========================================================================
   Painel admin (admin.html) - página sem link nenhum no site
   ========================================================================== */

.admin-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
}

.admin-panel {
  width: 100%;
  max-width: 480px;
}

.admin-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
}

.admin-card h1 {
  margin: 0 0 8px;
  font-size: 1.3rem;
  color: var(--color-text);
}

.admin-hint {
  margin: 0 0 24px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

#admin-key-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

#admin-key-form label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

#admin-key-input {
  min-height: var(--tap-min);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-size: 1rem;
  font-family: inherit;
}

.admin-year-range {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}

.admin-year-field {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.admin-year-field label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.admin-year-field input {
  min-height: var(--tap-min);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-size: 1rem;
  font-family: inherit;
}

.admin-error {
  margin: 16px 0 0;
  color: var(--color-danger);
  font-weight: 600;
}

.admin-status {
  margin: 20px 0 8px;
  font-weight: 600;
  color: var(--color-text);
}

.admin-log {
  max-height: 320px;
  overflow-y: auto;
  margin: 0;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 0.82rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre-wrap;
  color: var(--color-text);
}

/* ==========================================================================
   Modal genérico + Simulado personalizado
   ========================================================================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  background: rgba(45, 55, 72, 0.5);
}

.modal-dialog {
  width: 100%;
  max-width: 480px;
  max-height: 88vh;
  overflow-y: auto;
  background: var(--color-surface);
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.modal-header h2 {
  margin: 0;
  font-size: 1.15rem;
  color: var(--color-text);
}

.modal-close {
  all: unset;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: var(--tap-min);
  min-height: var(--tap-min);
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.modal-close:hover {
  color: var(--color-text);
  background: var(--color-bg);
}

.modal-hint {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.custom-simulado-rows {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.custom-simulado-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.custom-simulado-row-label {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text);
}

.stepper {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.stepper-btn {
  all: unset;
  box-sizing: border-box;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
}

.stepper-btn:hover {
  background: var(--color-primary-tint);
  border-color: var(--color-primary);
}

.stepper-btn:active {
  transform: scale(0.95);
}

.stepper-input {
  width: 40px;
  text-align: center;
  border: none;
  background: transparent;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  font-family: inherit;
  -moz-appearance: textfield;
}

.stepper-input::-webkit-outer-spin-button,
.stepper-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.custom-simulado-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

.custom-simulado-total {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

@media (min-width: 640px) {
  .modal-overlay {
    align-items: center;
    padding: 20px;
  }

  .modal-dialog {
    border-radius: var(--radius);
  }
}