/* ===============================
   THEME TOKENS
=============================== */
:root {
  --bg-primary: #ffffff;
  --bg-tertiary: #f5f7f6;
  --text-primary: #000000;
  --border-primary: rgba(21, 107, 76, 0.2);
  --shadow-xl: 0 8px 24px rgba(21, 107, 76, 0.15);
  --state-hover-bg: rgba(21, 107, 76, 0.08);
}

html[data-theme='dark'] {
  --bg-primary: #0b1411;
  --bg-tertiary: #11201b;
  --text-primary: #e6f3ee;
  --border-primary: rgba(47, 155, 120, 0.24);
  --shadow-xl: 0 8px 24px rgba(0, 0, 0, 0.6);
  --state-hover-bg: rgba(47, 155, 120, 0.16);
}

/* ===============================
   RESET
=============================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 24px;
}

/* ✅ Light mode - Fundo */
body[data-theme='light'] {
  background: linear-gradient(180deg, #f5faf8 0%, #ffffff 60%, #fafcfb 100%);
  color: #0f3f2f;
}
body[data-theme='dark'] {
  background: linear-gradient(180deg, #0b1411 0%, #0a1411 55%, #0b1512 100%);
  color: var(--text-primary);
}

/* ===============================
   CONTAINER CENTRAL
=============================== */
.container {
  max-width: 720px;
  width: 100%;
  background: var(--bg-tertiary);
  border-radius: 20px;
  padding: 36px 28px;
  box-shadow: var(--shadow-xl);
}

/* ✅ Light mode - Container */
body[data-theme='light'] .container {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 18px 40px rgba(21, 107, 76, 0.08);
}

/* ===============================
   TOPO
=============================== */
.topo {
  text-align: center;
  margin-bottom: 28px;
}

.topo h1 {
  font-family: 'Playfair Display', serif;
  font-size: 32px;
  color: var(--text-primary);
  margin-bottom: 6px;
}

/* ✅ Light mode - Título */
body[data-theme='light'] .topo h1 {
  color: #0f3f2f;
}

.subtitulo {
  font-size: 14px;
  opacity: 0.75;
}

/* ✅ Light mode - Subtítulo */
body[data-theme='light'] .subtitulo {
  color: rgba(15, 63, 47, 0.78);
}

/* ===============================
   BLOCO DE TEXTO
=============================== */
.bloco {
  font-size: 16px;
  line-height: 1.7;
}

.bloco p {
  margin-bottom: 16px;
}

/* ✅ Light mode - Texto do bloco */
body[data-theme='light'] .bloco {
  color: #0f3f2f;
}

body[data-theme='light'] .bloco strong {
  color: #0b3326;
}

/* destaque contato */
.contato {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid rgb(234, 250, 244);
  text-align: center;
}

/* ✅ Light mode - Contato */
body[data-theme='light'] .contato {
  border-top: 1px solid rgba(21, 107, 76, 0.2);
}
body[data-theme='dark'] .contato {
  border-top: 1px solid var(--border-primary);
}

/* ===============================
   RODAPÉ
=============================== */
.rodape {
  margin-top: 28px;
  text-align: center;
  font-size: 13px;
  opacity: 0.6;
}

/* ✅ Light mode - Rodapé */
body[data-theme='light'] .rodape {
  color: rgba(15, 63, 47, 0.7);
}
.container {
  position: relative;
}

.btn-voltar {
  top: 16px;
  left: 16px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--border-primary); /* verde IPB claro (dark) */
  background: var(--bg-tertiary); /* fundo dark */
  color: var(--text-primary); /* ícone verde */
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 5000;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
}

/* ✅ Light mode - Botão voltar */
body[data-theme='light'] .btn-voltar {
  border: 2px solid rgba(21, 107, 76, 0.3);
  background: rgba(255, 255, 255, 0.98);
  color: #156b4c;
  box-shadow: 0 2px 6px rgba(21, 107, 76, 0.1);
}

.btn-voltar {
  -webkit-tap-highlight-color: transparent;
  outline: none;
}

.btn-voltar:active {
  background: var(--state-hover-bg);
  transform: scale(0.95);
}

/* ✅ Light mode - Botão voltar active */
body[data-theme='light'] .btn-voltar:active {
  background: rgba(21, 107, 76, 0.1);
}