/* ============================================================
   PDF Infinito — Layout
   Estrutura: toolbar > main(sidebar | rolo | painel)
   ============================================================ */

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

/* ── Body ────────────────────────────────────────────────── */
body {
  font-family: var(--font-ui);
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* ── Toolbar ─────────────────────────────────────────────── */
.toolbar {
  height: var(--toolbar-h);
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 8px;
  flex-shrink: 0;
  z-index: 100;
}

.toolbar-logo {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 400;
  color: var(--accent);
  letter-spacing: 0.05em;
  margin-right: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  user-select: none;
}

.toolbar-logo .logo-symbol {
  font-size: 22px;
  line-height: 1;
}

.toolbar-sep {
  width: 1px;
  height: 20px;
  background: var(--border2);
  margin: 0 4px;
  flex-shrink: 0;
}

.tb-spacer { flex: 1; }

/* ── Main (sidebar + rolo + painel) ─────────────────────── */
.main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ── Sidebar ─────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: width var(--t-normal), min-width var(--t-normal);
}

.sidebar.collapsed {
  width: 0;
  min-width: 0;
}

.sidebar-header {
  padding: 14px 16px 10px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.sidebar-title {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--text3);
  font-weight: 400;
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.sidebar-count {
  font-size: 10px;
  color: var(--text3);
  font-family: var(--font-mono);
}

.sidebar-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
  scrollbar-width: thin;
  scrollbar-color: var(--bg4) transparent;
}

.sidebar-list::-webkit-scrollbar        { width: 3px; }
.sidebar-list::-webkit-scrollbar-track  { background: transparent; }
.sidebar-list::-webkit-scrollbar-thumb  { background: var(--bg4); border-radius: 2px; }

.sidebar-add {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

/* ── Área de conteúdo (rolo + painel direito) ────────────── */
.content {
  flex: 1;
  display: flex;
  overflow: hidden;
  position: relative;
}

/* ── Rolo infinito ───────────────────────────────────────── */
.rolo {
  flex: 1;
  overflow-y: auto;
  background: var(--bg);
  scrollbar-width: thin;
  scrollbar-color: var(--bg4) transparent;
  position: relative;
}

.rolo::-webkit-scrollbar        { width: 4px; }
.rolo::-webkit-scrollbar-track  { background: transparent; }
.rolo::-webkit-scrollbar-thumb  { background: var(--bg4); border-radius: 2px; }

/* ── Painel de anotações (direita) ───────────────────────── */
.annotation-panel {
  width: var(--panel-w);
  min-width: var(--panel-w);
  background: var(--bg2);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: width var(--t-normal), min-width var(--t-normal);
}

.annotation-panel.collapsed {
  width: 0;
  min-width: 0;
}

.panel-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.panel-content {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  scrollbar-width: thin;
  scrollbar-color: var(--bg4) transparent;
}

.panel-content::-webkit-scrollbar       { width: 3px; }
.panel-content::-webkit-scrollbar-thumb { background: var(--bg4); border-radius: 2px; }

/* ── Status bar ──────────────────────────────────────────── */
.status-bar {
  height: var(--statusbar-h);
  background: var(--bg2);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 16px;
  flex-shrink: 0;
  z-index: 100;
}

.status-item {
  font-size: 10px;
  color: var(--text3);
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 5px;
  letter-spacing: 0.04em;
}

.status-item.active { color: var(--accent); }

.status-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
  flex-shrink: 0;
}

.status-dot.offline { background: var(--text3); }

.status-sep {
  width: 1px;
  height: 12px;
  background: var(--border2);
}

/* ── Conector entre segmentos do rolo ────────────────────── */
.segment-connector {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 48px;
}

.connector-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

.connector-label {
  font-size: 9px;
  color: var(--text3);
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* ── Empty state (rolo vazio) ────────────────────────────── */
.rolo-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 20px;
  padding: 40px;
  text-align: center;
}

.rolo-empty-symbol {
  font-size: 48px;
  line-height: 1;
  opacity: 0.3;
}

.rolo-empty-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 300;
  color: var(--text2);
  line-height: 1.4;
}

.rolo-empty-sub {
  font-size: 12px;
  color: var(--text3);
  font-weight: 300;
  max-width: 280px;
  line-height: 1.6;
}

/* ── Painel de vídeo (flutuante) ─────────────────────────── */
.video-panel {
  position: absolute;
  bottom: 16px;
  right: calc(var(--panel-w) + 16px);
  width: 320px;
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  z-index: 50;
  display: none;
}

.video-panel.visible { display: block; }

/* ── Modal overlay ───────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-normal);
}

.modal-overlay.visible {
  opacity: 1;
  pointer-events: all;
}

.modal-box {
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: var(--r-xl);
  padding: 28px;
  width: 480px;
  max-width: calc(100vw - 40px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  transform: translateY(8px);
  transition: transform var(--t-normal);
}

.modal-overlay.visible .modal-box {
  transform: translateY(0);
}