/* ================================================================
   MOBILIZAÇÃO CIDADÃ — styles.css
   Estrutura:
   1. Variáveis e Reset
   2. Tipografia
   3. Layout Base
   4. Cabeçalho
   5. Barra de Progresso
   6. Cards (painéis de etapa)
   7. Formulário
   8. Preview do E-mail
   9. Botões
   10. Caixas de Aviso e Erro
   11. Rodapé
   12. Animações
   13. Responsividade
   14. Acessibilidade (foco, motion)
================================================================ */

/* ----------------------------------------------------------------
   1. VARIÁVEIS E RESET
---------------------------------------------------------------- */
:root {
  /* Paleta principal */
  --color-bg:         #F7F6F2;       /* fundo geral — off-white quente */
  --color-surface:    #FFFFFF;       /* fundo de cards */
  --color-border:     #E0DCCE;       /* bordas suaves */
  --color-text:       #1C1B18;       /* texto principal */
  --color-text-muted: #6B6860;       /* texto secundário */
  --color-accent:     #1A4D8F;       /* azul institucional */
  --color-accent-dark:#123566;       /* azul hover */
  --color-accent-light:#EEF3FB;      /* azul muito claro */
  --color-success:    #1A6B45;       /* verde de sucesso */
  --color-warning-bg: #FFF8E6;       /* fundo de aviso */
  --color-warning-bd: #E6A817;       /* borda de aviso */
  --color-error-bg:   #FFF0EE;       /* fundo de erro */
  --color-error-bd:   #CC3922;       /* borda de erro */
  --color-step-done:  #1A6B45;       /* etapa concluída */
  --color-step-next:  #B8B3A4;       /* etapa futura */

  /* Tipografia */
  --font-body:        'Georgia', 'Times New Roman', serif;
  --font-ui:          system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono:        'Courier New', Courier, monospace;

  /* Escala de tipo */
  --text-xs:    0.75rem;
  --text-sm:    0.875rem;
  --text-base:  1rem;
  --text-lg:    1.125rem;
  --text-xl:    1.375rem;
  --text-2xl:   1.75rem;
  --text-3xl:   2.25rem;

  /* Espaçamento */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Layout */
  --container-max:    720px;
  --radius-sm:        4px;
  --radius-md:        8px;
  --radius-lg:        12px;
  --radius-full:      9999px;

  /* Sombras */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);

  /* Transições */
  --transition-fast:   150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow:   400ms ease;
}

/* Reset minimalista */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--color-accent); }
a:hover { color: var(--color-accent-dark); }

/* ----------------------------------------------------------------
   2. TIPOGRAFIA
---------------------------------------------------------------- */
h1, h2, h3 {
  font-family: var(--font-body);
  line-height: 1.25;
  font-weight: normal;
  letter-spacing: -0.01em;
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-xl); }
h3 { font-size: var(--text-lg); font-weight: bold; }

p { margin-bottom: var(--space-4); }
p:last-child { margin-bottom: 0; }

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-border);
  padding: 0.1em 0.35em;
  border-radius: var(--radius-sm);
}

/* ----------------------------------------------------------------
   3. LAYOUT BASE
---------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.main-content {
  flex: 1;
  padding: var(--space-10) 0 var(--space-16);
}

/* ----------------------------------------------------------------
   4. CABEÇALHO
---------------------------------------------------------------- */
.site-header {
  background: var(--color-accent);
  color: #FFFFFF;
  padding: var(--space-10) 0 var(--space-8);
  text-align: center;
  /* Linha fina na base para separar do fundo */
  border-bottom: 3px solid var(--color-accent-dark);
}

.site-title {
  font-size: var(--text-3xl);
  color: #FFFFFF;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
}

.site-subtitle {
  font-family: var(--font-ui);
  font-size: var(--text-base);
  color: rgba(255,255,255,0.82);
  margin-bottom: 0;
}

/* ----------------------------------------------------------------
   5. BARRA DE PROGRESSO
---------------------------------------------------------------- */
.progress-bar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) 0 var(--space-3);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.steps {
  display: flex;
  justify-content: center;
  gap: 0;
  list-style: none;
  margin-bottom: var(--space-3);
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: 0 var(--space-5);
  position: relative;
  cursor: default;
}

/* Linha conectora entre etapas */
.step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 14px;
  left: calc(50% + 14px);
  width: calc(100% - 28px);
  height: 2px;
  background: var(--color-border);
  transition: background var(--transition-slow);
}

.step.done::after {
  background: var(--color-step-done);
}

/* Círculo numerado */
.step-number {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-step-next);
  color: #FFFFFF;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-normal), transform var(--transition-normal);
  position: relative;
  z-index: 1;
}

.step.active .step-number {
  background: var(--color-accent);
  transform: scale(1.15);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.step.done .step-number {
  background: var(--color-step-done);
}

.step.done .step-number::before {
  content: '✓';
}

/* Oculta o número quando marcado */
.step.done .step-number {
  font-size: 0; /* esconde número */
  font-size: var(--text-sm); /* re-exibe — o conteúdo vem do ::before */
}

/* Label da etapa */
.step-label {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
  transition: color var(--transition-normal);
  white-space: nowrap;
}

.step.active .step-label {
  color: var(--color-accent);
  font-weight: 700;
}

.step.done .step-label {
  color: var(--color-step-done);
}

/* Barra de progresso horizontal */
.progress-track {
  height: 3px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  max-width: 480px;
  margin: 0 auto;
}

.progress-fill {
  height: 100%;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  width: 25%; /* começa na etapa 1 */
  transition: width var(--transition-slow);
}

/* ----------------------------------------------------------------
   6. CARDS — painéis de etapa
---------------------------------------------------------------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;

  /* Estado inicial para animação de entrada */
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

/* Quando o painel está ativo e visível */
.card.active,
.card.step-panel:not([hidden]) {
  opacity: 1;
  transform: translateY(0);
}

.card-header {
  padding: var(--space-6) var(--space-8);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-accent-light);
}

.step-badge {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--space-1);
}

.card-title {
  font-size: var(--text-xl);
  color: var(--color-text);
}

.card-body {
  padding: var(--space-8);
}

.card-footer {
  padding: var(--space-6) var(--space-8);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
}

.card-footer--split {
  justify-content: space-between;
}

.card-footer--column {
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-3);
}

/* ----------------------------------------------------------------
   CONTEÚDO DA ETAPA 1 — Contexto
---------------------------------------------------------------- */
.context-block {
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.context-block:last-of-type {
  border-bottom: none;
}

.context-heading {
  font-size: var(--text-base);
  font-weight: bold;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.context-text {
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: 1.7;
}

.highlight-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.highlight-item {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: var(--text-base);
  line-height: 1.6;
}

.highlight-icon {
  color: var(--color-accent);
  font-size: var(--text-lg);
  line-height: 1.4;
  flex-shrink: 0;
}

/* ----------------------------------------------------------------
   7. FORMULÁRIO
---------------------------------------------------------------- */
.form-notice {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  background: var(--color-accent-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-6);
  line-height: 1.5;
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.required {
  color: var(--color-error-bd);
  margin-left: 2px;
}

.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.form-input.invalid {
  border-color: var(--color-error-bd);
  box-shadow: 0 0 0 3px var(--color-error-bg);
}

.form-input::placeholder {
  color: var(--color-step-next);
  font-style: italic;
}

/* Select com seta customizada */
.select-wrapper {
  position: relative;
}

.form-select {
  cursor: pointer;
  padding-right: var(--space-10);
}

.select-arrow {
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.form-hint {
  display: block;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
  line-height: 1.4;
}

/* ----------------------------------------------------------------
   8. PREVIEW DO E-MAIL
---------------------------------------------------------------- */
.email-meta {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--space-5);
  font-family: var(--font-ui);
}

.email-meta-row {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  align-items: flex-start;
}

.email-meta-row:last-child {
  border-bottom: none;
}

.email-meta-label {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text-muted);
  min-width: 60px;
  flex-shrink: 0;
  padding-top: 2px;
}

.email-meta-value {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.5;
  word-break: break-all;
}

.email-meta-value--muted {
  color: var(--color-text-muted);
  font-style: italic;
  font-size: var(--text-xs);
}

.email-preview {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  padding: var(--space-6);
  max-height: 360px;
  overflow-y: auto;
}

.email-body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--color-text);
  white-space: pre-wrap;
  word-break: break-word;
}

/* Ícone de envio (etapa 4) */
.send-hero {
  text-align: center;
  margin-bottom: var(--space-6);
}

.send-icon {
  font-size: 3.5rem;
  display: inline-block;
  opacity: 0.18;
  filter: grayscale(1);
}

.send-instruction {
  font-size: var(--text-lg);
  text-align: center;
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

/* Feedback de cópia */
.copy-feedback {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-success);
  text-align: center;
  padding: var(--space-2) 0;
  animation: fadeIn var(--transition-normal);
}

/* ----------------------------------------------------------------
   9. BOTÕES
---------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-ui);
  font-size: var(--text-base);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
  line-height: 1.2;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

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

/* Primário */
.btn-primary {
  background: var(--color-accent);
  color: #FFFFFF;
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  box-shadow: var(--shadow-md);
  color: #FFFFFF;
}

/* Secundário */
.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn-secondary:hover {
  background: var(--color-accent-light);
}

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  font-weight: 400;
}

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

/* Tamanhos */
.btn-large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
  border-radius: var(--radius-md);
}

.btn-small {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn-arrow { font-style: normal; }
.btn-arrow--left { order: -1; }
.btn-icon { font-style: normal; }

/* ----------------------------------------------------------------
   10. CAIXAS DE AVISO E ERRO
---------------------------------------------------------------- */
.warning-box {
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning-bd);
  border-left: 4px solid var(--color-warning-bd);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  margin-top: var(--space-5);
  font-family: var(--font-ui);
}

.warning-title {
  font-weight: 700;
  font-size: var(--text-sm);
  margin-bottom: var(--space-2);
}

.warning-text {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.5;
}

.error-box {
  background: var(--color-error-bg);
  border: 1px solid var(--color-error-bd);
  border-left: 4px solid var(--color-error-bd);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  margin-top: var(--space-5);
  font-family: var(--font-ui);
}

.error-title {
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-error-bd);
  margin-bottom: var(--space-2);
}

.error-list {
  list-style: disc;
  margin-left: var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.6;
}

/* ----------------------------------------------------------------
   11. RODAPÉ
---------------------------------------------------------------- */
.site-footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.75);
  padding: var(--space-8) 0;
  text-align: center;
  margin-top: auto;
}

.footer-text {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  line-height: 1.5;
}

.footer-text--muted {
  color: rgba(255,255,255,0.45);
  font-size: var(--text-xs);
  margin-top: var(--space-2);
}

.footer-link {
  color: rgba(255,255,255,0.65);
  text-underline-offset: 3px;
}

.footer-link:hover {
  color: #FFFFFF;
}

/* ----------------------------------------------------------------
   12. ANIMAÇÕES
---------------------------------------------------------------- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(26,77,143,0.35); }
  50%       { box-shadow: 0 0 0 8px rgba(26,77,143,0); }
}

/* Classe utilitária de entrada */
.animate-in {
  animation: slideInUp var(--transition-slow) both;
}

/* Pulso no botão principal da etapa 4 */
#btnMailto {
  animation: pulse 2.4s infinite;
}

#btnMailto:hover {
  animation: none;
}

/* ----------------------------------------------------------------
   13. RESPONSIVIDADE
---------------------------------------------------------------- */
@media (max-width: 600px) {
  .container {
    padding: 0 var(--space-4);
  }

  .site-title {
    font-size: var(--text-2xl);
  }

  .card-header,
  .card-body,
  .card-footer {
    padding-left: var(--space-5);
    padding-right: var(--space-5);
  }

  /* Esconde os labels de etapa em telas muito pequenas */
  .step-label {
    display: none;
  }

  .steps {
    gap: 0;
  }

  .step {
    padding: 0 var(--space-3);
  }

  .btn-large {
    padding: var(--space-4) var(--space-5);
    font-size: var(--text-base);
  }

  /* Card footer vira coluna em mobile */
  .card-footer--split {
    flex-direction: column-reverse;
    gap: var(--space-2);
  }

  .card-footer--split .btn {
    width: 100%;
    justify-content: center;
  }

  .email-preview {
    max-height: 260px;
  }
}

/* ----------------------------------------------------------------
   14. ACESSIBILIDADE
---------------------------------------------------------------- */

/* Foco visível para navegação por teclado */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Remove outline padrão do navegador quando não é teclado */
:focus:not(:focus-visible) {
  outline: none;
}

/* Respeita preferência por movimento reduzido */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  #btnMailto {
    animation: none;
  }
}

/* Alto contraste */
@media (forced-colors: active) {
  .btn-primary {
    border: 2px solid ButtonText;
  }
}