/* ========================================
   AcervoVideos — Design System
   Cores: verde #1a6b3c + amarelo #f5c518
   ======================================== */

:root {
  --verde: #1a6b3c;
  --verde-escuro: #145230;
  --verde-claro: #e8f5ee;
  --amarelo: #f5c518;
  --amarelo-escuro: #d4a800;
  --branco: #ffffff;
  --cinza-100: #f7f8fa;
  --cinza-200: #e9ecef;
  --cinza-300: #ced4da;
  --cinza-600: #6c757d;
  --cinza-800: #343a40;
  --texto: #212529;
  --tooltip-bg: #1a1a2e;
  --tooltip-texto: #ffffff;
  --sombra: 0 4px 16px rgba(0, 0, 0, 0.08);
  --sombra-hover: 0 8px 24px rgba(0, 0, 0, 0.14);
  --raio: 12px;
  --raio-peq: 8px;
  --fonte: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
  font-family: var(--fonte);
  color: var(--texto);
  background: var(--cinza-100);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--verde);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========================================
   NAVEGAÇÃO SUPERIOR (links entre subsistemas)
   ======================================== */

.topnav {
  background: var(--verde-escuro);
  border-bottom: 2px solid var(--amarelo);
}

.topnav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 44px;
  flex-wrap: wrap;
}

.topnav .topnav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.topnav a {
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.topnav a:hover {
  color: var(--amarelo);
  border-bottom-color: var(--amarelo);
  text-decoration: none;
}

.topnav a.topnav-home {
  color: var(--amarelo);
  font-weight: 800;
}

/* ========================================
   HEADER
   ======================================== */

.site-header {
  background: var(--verde);
  color: var(--branco);
  box-shadow: var(--sombra);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 16px;
}

.logo {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--branco);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo:hover {
  text-decoration: none;
  color: var(--amarelo);
}

.logo .logo-destaque {
  color: var(--amarelo);
}

/* ========================================
   BUSCA
   ======================================== */

.busca-wrapper {
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

.busca-input {
  width: 100%;
  padding: 14px 20px 14px 46px;
  border: 2px solid var(--cinza-300);
  border-radius: 50px;
  font-size: 1rem;
  font-family: var(--fonte);
  transition: border-color 0.2s, box-shadow 0.2s;
  background: var(--branco);
}

.busca-input:focus {
  outline: none;
  border-color: var(--verde);
  box-shadow: 0 0 0 3px rgba(26, 107, 60, 0.15);
}

.busca-icone {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--cinza-600);
  font-size: 1.1rem;
  pointer-events: none;
}

/* Filtros (data + canal) */
.filtros-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.filtro-label {
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.85rem;
  font-weight: 700;
}

.filtro-select {
  padding: 8px 14px;
  border: 2px solid var(--cinza-300);
  border-radius: 24px;
  font-size: 0.9rem;
  font-family: var(--fonte);
  background: var(--branco);
  color: var(--texto);
  cursor: pointer;
  max-width: 260px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.filtro-select:focus {
  outline: none;
  border-color: var(--amarelo);
  box-shadow: 0 0 0 3px rgba(245, 197, 24, 0.25);
}

/* ========================================
   PÁGINA
   ======================================== */

.page-header {
  background: linear-gradient(135deg, var(--verde) 0%, var(--verde-escuro) 100%);
  color: var(--branco);
  padding: 48px 0;
  text-align: center;
}

.page-header h1 {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.page-header p {
  opacity: 0.95;
  max-width: 640px;
  margin: 0 auto 24px;
}

.page-body {
  padding: 40px 0;
}

.resultado-info {
  color: var(--cinza-600);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

/* ========================================
   GRADE DE VÍDEOS
   ======================================== */

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.video-card {
  background: var(--branco);
  border-radius: var(--raio);
  box-shadow: var(--sombra);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sombra-hover);
}

.video-thumb {
  aspect-ratio: 16 / 9;
  background: var(--verde-escuro);
  position: relative;
  overflow: hidden;
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.video-thumb video {
  width: 100%;
  height: auto;
  display: block;
  background: #000;
  aspect-ratio: 16 / 9;
  object-fit: contain;
}

.video-thumb iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.video-duracao {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.8);
  color: var(--branco);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}

.video-info {
  padding: 18px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.video-info h3 {
  font-size: 1.05rem;
  color: var(--verde-escuro);
  margin-bottom: 6px;
  line-height: 1.3;
}

.video-info p {
  color: var(--cinza-600);
  font-size: 0.92rem;
  flex: 1;
}

.video-categoria {
  display: inline-block;
  align-self: flex-start;
  background: var(--verde-claro);
  color: var(--verde);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  margin-top: 12px;
}

/* Badge do canal */
.video-canal {
  display: inline-block;
  align-self: flex-start;
  background: var(--verde-escuro);
  color: var(--branco);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  margin-top: 6px;
}

/* Badge de link externo (URL do vídeo) */
.video-acoes {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.video-link-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  align-self: flex-start;
  background: var(--verde);
  color: var(--branco);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  margin-top: 0;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
}

.video-link-badge:hover {
  background: var(--verde-escuro);
  color: var(--amarelo);
  text-decoration: none;
  transform: translateY(-1px);
}

/* Badge de download do vídeo */
.video-download-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  align-self: flex-start;
  background: var(--amarelo);
  color: #212529;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: 20px;
  margin-top: 0;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
}

.video-download-badge:hover {
  background: var(--amarelo-escuro);
  color: #212529;
  text-decoration: none;
  transform: translateY(-1px);
}

/* Título clicável (abre modal) */
.video-info h3 {
  cursor: pointer;
}

.video-info h3:hover {
  color: var(--verde);
  text-decoration: underline;
}

/* ========================================
   MODAL DE VÍDEO (80% da tela)
   ======================================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-overlay.aberto {
  display: flex;
}

.modal {
  background: var(--branco);
  border-radius: var(--raio);
  box-shadow: var(--sombra-hover);
  width: 100%;
  max-width: 80vw;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  padding: 24px;
}

.modal-fechar {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--cinza-200);
  border: none;
  color: var(--cinza-800);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 1.1rem;
  cursor: pointer;
  z-index: 2;
  transition: background 0.2s, color 0.2s;
}

.modal-fechar:hover {
  background: var(--verde);
  color: var(--branco);
}

.modal-video video {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: #000;
  border-radius: var(--raio-peq);
  display: block;
}

.modal-info {
  margin-top: 18px;
}

.modal-info h2 {
  font-size: 1.4rem;
  color: var(--verde-escuro);
  margin-bottom: 8px;
  line-height: 1.3;
}

.modal-info p {
  color: var(--cinza-600);
  font-size: 0.98rem;
  margin-bottom: 16px;
}

.modal-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.modal-meta .video-categoria {
  margin-top: 0;
}

.modal-link {
  margin-top: 0;
}

/* Botão de download no modal */
.modal-download {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--amarelo);
  color: #212529;
  font-size: 0.85rem;
  font-weight: 800;
  padding: 8px 18px;
  border-radius: 24px;
  margin-top: 0;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
}

.modal-download:hover {
  background: var(--amarelo-escuro);
  color: #212529;
  text-decoration: none;
  transform: translateY(-1px);
}

@media (max-width: 768px) {
  .modal {
    max-width: 95vw;
    max-height: 90vh;
    padding: 16px;
  }
}

/* ========================================
   SCROLL INFINITO / LOADING
   ======================================== */

.loading {
  text-align: center;
  padding: 32px 0;
  color: var(--cinza-600);
  font-weight: 600;
}

.loading-spinner {
  display: inline-block;
  width: 28px;
  height: 28px;
  border: 3px solid var(--cinza-300);
  border-top-color: var(--verde);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 8px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.fim-lista {
  text-align: center;
  padding: 24px 0;
  color: var(--cinza-600);
  font-weight: 600;
}

/* ========================================
   ESTADO VAZIO
   ======================================== */

.vazio {
  text-align: center;
  padding: 48px 0;
  color: var(--cinza-600);
}

.vazio .vazio-icone {
  font-size: 3rem;
  margin-bottom: 12px;
}

/* ========================================
   FOOTER
   ======================================== */

.site-footer {
  background: var(--verde-escuro);
  color: rgba(255, 255, 255, 0.85);
  padding: 32px 0;
  margin-top: 48px;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.site-footer a {
  color: var(--amarelo);
}

.site-footer a:hover {
  color: var(--branco);
}

/* ========================================
   RESPONSIVO
   ======================================== */

@media (max-width: 768px) {
  .page-header h1 {
    font-size: 1.7rem;
  }

  .video-grid {
    grid-template-columns: 1fr;
  }
}