/* =========================================
   1. VARIÁVEIS GERAIS (TEMA PADRÃO)
   ========================================= */
:root {
  --bg-color: #fafafa;
  --text-main: #2d3748;
  --text-light: #718096;
  --card-bg: #ffffff;
  --border-color: #e2e8f0;
  --accent-color: #4a5568;

  --font-ui: "Sora", sans-serif;
  --font-poetry: "Sora", sans-serif;
}

/* =========================================
   1.1. TEMA: FOLHA ANTIGA (SÉPIA)
   ========================================= */
body.theme-sepia {
  --bg-color: #f4ecd8;
  --text-main: #4a3f35;
  --text-light: #8b7d6b;
  --card-bg: #fdf8eb;
  --border-color: #d1c5a9;
  --accent-color: #b05c36;
}

/* =========================================
   1.2. TEMA: NOITE (DARK / AZUL PROFUNDO)
   ========================================= */
body.theme-night {
  --bg-color: #0f172a;
  --text-main: #f1f5f9;
  --text-light: #94a3b8;
  --card-bg: #1e293b;
  --border-color: #334155;
  --accent-color: #60a5fa;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: var(--font-ui);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition:
    background-color 0.3s,
    color 0.3s;
}

/* =========================================
   3. ESTRUTURA E LAYOUT
   ========================================= */
.container {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  text-align: center;
  padding: 60px 0 40px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 40px;
}

.site-header h1 {
  font-family: var(--font-poetry);
  font-size: 2.5rem;
  font-weight: normal;
  margin-bottom: 10px;
  color: var(--text-main);
}

.site-header p {
  color: var(--text-light);
  font-size: 1.1rem;
}

.theme-switcher {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 20px;
}

.theme-btn {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 1.2rem;
  transition: background-color 0.2s;
}

.theme-btn:hover,
.theme-btn.active {
  background-color: var(--border-color);
}

.site-footer {
  text-align: center;
  padding: 40px 0;
  margin-top: 60px;
  color: var(--text-light);
  border-top: 1px solid var(--border-color);
  font-size: 0.9rem;
}

/* =========================================
   4. FILTROS DE TAGS (GERAL)
   ========================================= */
.filtros-container {
  margin-bottom: 40px;
  text-align: center;
}

.filtros-titulo {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 16px;
}

#tag-ativa {
  color: var(--accent-color);
  font-weight: 600;
}

.tags-filtro {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.tag-btn {
  font-size: 0.85rem;
  font-family: var(--font-ui);
  color: var(--text-main);
  background-color: var(--card-bg);
  padding: 6px 16px;
  border-radius: 9999px;
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.2s ease;
}

.tag-btn:hover {
  border-color: var(--text-light);
}

.tag-btn.active {
  background-color: var(--text-main);
  color: var(--bg-color);
  border-color: var(--text-main);
}

/* =========================================
   4.1 BOTTOM SHEET (SÓ PARA MOBILE)
   ========================================= */
.btn-mobile-filtro {
  display: none; /* Escondido no PC */
  background-color: var(--card-bg);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 10px 24px;
  border-radius: 9999px;
  font-family: var(--font-ui);
  font-size: 1rem;
  cursor: pointer;
  margin: 0 auto 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.filtros-overlay,
.sheet-handle,
.sheet-title {
  display: none;
}

@media (max-width: 600px) {
  .btn-mobile-filtro {
    display: block; /* Mostra o botão */
  }

  /* Transforma o container das pílulas numa gaveta que fica escondida embaixo */
  .filtros-sheet {
    position: fixed;
    bottom: -100%;
    left: 0;
    width: 100%;
    background-color: var(--bg-color);
    z-index: 2000;
    border-radius: 24px 24px 0 0;
    padding: 16px 20px 40px;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
    transition: bottom 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    max-height: 80vh;
  }

  .filtros-sheet.aberto {
    bottom: 0;
  }

  /* A barrinha do iOS no topo da gaveta */
  .sheet-handle {
    display: block;
    width: 40px;
    height: 5px;
    background-color: var(--border-color);
    border-radius: 10px;
    margin: 0 auto 20px;
    cursor: pointer;
  }

  .sheet-title {
    display: block;
    text-align: center;
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--text-main);
  }

  /* O fundo escuro com desfoque premium */
  .filtros-overlay {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px); /* Mágica do iOS */
    z-index: 1999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
  }

  .filtros-overlay.ativo {
    opacity: 1;
    pointer-events: auto;
  }

  .tags-filtro {
    overflow-y: auto;
    max-height: 50vh;
    padding-bottom: 20px;
  }
}

/* =========================================
   5. GRID DE POEMAS
   ========================================= */
.poemas-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

@media (min-width: 600px) {
  .poemas-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* =========================================
   6. CARDS DE POEMA
   ========================================= */
.poema-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s;
}

.poema-card:hover {
  border-color: #cbd5e1;
}

.poema-titulo {
  font-family: var(--font-poetry);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.poema-preview {
  color: var(--text-light);
  margin-bottom: 24px;
  flex-grow: 1;
}

.ver-mais {
  color: var(--text-light);
  font-weight: 600;
  cursor: pointer;
  transition: color 0.2s;
  white-space: nowrap;
}

.ver-mais:hover {
  color: var(--text-main);
}

/* =========================================
   7. RODAPÉ DO CARD (TAGS E LIKES)
   ========================================= */
.poema-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

.poema-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.8rem;
  color: var(--text-light);
  background-color: var(--bg-color);
  padding: 4px 12px;
  border-radius: 9999px;
  border: 1px solid var(--border-color);
}

.like-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-light);
  font-family: var(--font-ui);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: transform 0.2s;
}

.like-btn:hover {
  transform: scale(1.1);
  color: var(--text-main);
}

/* =========================================
   8. LEITOR LATERAL (SLIDE DA DIREITA)
   ========================================= */
.leitor-lateral {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background-color: var(--bg-color);
  z-index: 3000; /* Aumentado para garantir que fica por cima de tudo */
  overflow-y: auto;
  transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.leitor-lateral.aberto {
  right: 0;
}

.leitor-conteudo {
  padding-top: 40px;
  padding-bottom: 80px;
}

.fechar-btn {
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 1rem;
  font-family: var(--font-ui);
  cursor: pointer;
  margin-bottom: 40px;
  padding: 8px 0;
  display: inline-block;
  transition: color 0.2s;
}

.fechar-btn:hover {
  color: var(--text-main);
}

.leitor-poema-titulo {
  font-family: var(--font-poetry);
  font-size: 2.5rem;
  margin-bottom: 30px;
  color: var(--text-main);
}

.leitor-poema-texto {
  font-size: 1.2rem;
  line-height: 1.8;
  color: var(--text-main);
  white-space: pre-wrap;
}