:root {
  color-scheme: dark;
  --bg: #060913;
  --fg: #e9eefb;
  --muted: rgba(233, 238, 251, 0.65);
  --panel: rgba(10, 14, 24, 0.72);
  --border: rgba(233, 238, 251, 0.14);
  --accent: #2f89ff;
  --sidebar-width: 68px;
  --sidebar-width-open: 224px;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
}

.toolbar {
  position: fixed;
  top: 0;
  left: var(--sidebar-width);
  right: 0;
  z-index: 5;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 12px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
  transition: left 0.18s ease;
}

.title {
  font-weight: 700;
  letter-spacing: 0.01em;
}

.subtitle {
  font-size: 0.9rem;
  color: var(--muted);
  margin-top: 2px;
}

.toolbar-left {
  display: grid;
  gap: 2px;
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.file-input {
  display: none;
}

.live-link {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid rgba(47, 137, 255, 0.3);
  background: rgba(47, 137, 255, 0.12);
  color: #d9e8ff;
  text-decoration: none;
  font-size: 0.9rem;
}

.live-link:hover {
  background: rgba(47, 137, 255, 0.18);
}

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar-width);
  z-index: 8;
  background: rgba(7, 12, 22, 0.88);
  border-right: 1px solid var(--border);
  backdrop-filter: blur(14px);
  overflow: hidden;
  transition: width 0.18s ease;
}

.sidebar.is-open {
  width: var(--sidebar-width-open);
}

.sidebar-inner {
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px 10px;
}

.sidebar-toggle,
.sidebar-item,
.options-item {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--fg);
  border-radius: 12px;
  cursor: pointer;
  font: inherit;
}

.sidebar-toggle {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  gap: 4px;
  padding: 0;
}

.sidebar-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 99px;
  background: var(--fg);
}

.sidebar-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 46px;
  padding: 0 12px;
  text-align: left;
}

.sidebar-item.is-active,
.sidebar-item:hover,
.sidebar-toggle:hover,
.options-item:hover {
  background: rgba(47, 137, 255, 0.12);
  border-color: rgba(47, 137, 255, 0.28);
}

.sidebar-icon {
  width: 24px;
  min-width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.07);
  color: #cfe0ff;
  font-weight: 700;
  font-size: 0.85rem;
}

.sidebar-label {
  white-space: nowrap;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.14s ease, transform 0.14s ease;
}

.sidebar.is-open .sidebar-label {
  opacity: 1;
  transform: translateX(0);
}

.sidebar-spacer {
  flex: 1;
}

.sidebar-options {
  position: relative;
}

.options-menu {
  position: absolute;
  left: calc(100% + 8px);
  bottom: 0;
  min-width: 180px;
  padding: 8px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(7, 12, 22, 0.96);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.35);
}

.sidebar.is-open .options-menu {
  left: 0;
  right: 0;
  bottom: calc(100% + 8px);
  min-width: 0;
}

.options-item {
  width: 100%;
  padding: 10px 12px;
  text-align: left;
}

.options-link {
  display: block;
  color: var(--fg);
  text-decoration: none;
}

.options-item + .options-item {
  margin-top: 8px;
}

.status {
  position: fixed;
  left: calc(var(--sidebar-width) + 12px);
  bottom: 12px;
  z-index: 5;
  padding: 8px 10px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--muted);
  font-size: 0.92rem;
}

.progress {
  position: fixed;
  left: var(--sidebar-width);
  top: 52px;
  height: 3px;
  width: 0;
  background: var(--accent);
  z-index: 6;
  transition: width 0.12s ease-in-out;
}

.page {
  position: fixed;
  inset: 52px 0 0 var(--sidebar-width);
  padding: 18px;
  display: grid;
  place-items: center;
  transition: inset 0.18s ease;
}

.viewer-panel {
  width: min(1400px, 100%);
  height: min(820px, calc(100vh - 82px));
  max-height: 100%;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  overflow: hidden;
  display: grid;
  grid-template-rows: auto 1fr;
}

.viewer-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.2);
}

.viewer-panel-title-wrap {
  display: grid;
  gap: 2px;
}

.viewer-panel-title {
  font-weight: 700;
}

.viewer-panel-subtitle {
  font-size: 0.84rem;
  color: var(--muted);
}

.viewer-panel-actions {
  display: grid;
  justify-items: end;
  gap: 8px;
}

.viewer-panel-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.viewer-controls {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
}

.viewer-control-button {
  min-width: 82px;
  height: 36px;
  border: 0;
  border-radius: 999px;
  background: rgba(47, 137, 255, 0.14);
  color: var(--fg);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.viewer-control-button:hover,
.viewer-control-button:active {
  background: rgba(47, 137, 255, 0.24);
}

.variant-toggle {
  display: inline-flex;
  padding: 3px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
}

.variant-button {
  border: 0;
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  padding: 7px 12px;
  font: inherit;
  cursor: pointer;
}

.variant-button.is-active {
  color: var(--fg);
  background: rgba(47, 137, 255, 0.18);
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 6px 10px;
  font-size: 0.9rem;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
}

.viewer {
  position: relative;
  inset: unset;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

body.sidebar-expanded .toolbar {
  left: var(--sidebar-width-open);
}

body.sidebar-expanded .progress {
  left: var(--sidebar-width-open);
}

body.sidebar-expanded .page {
  inset: 52px 0 0 var(--sidebar-width-open);
}

body.sidebar-expanded .status {
  left: calc(var(--sidebar-width-open) + 12px);
}

@media (max-width: 760px) {
  :root {
    --sidebar-width: 58px;
    --sidebar-width-open: 208px;
  }

  .toolbar {
    display: none;
  }

  .page {
    inset: 0;
    padding: 6px;
  }

  .subtitle {
    display: none;
  }

  .toolbar-right {
    gap: 8px;
  }

  .live-link {
    min-height: 34px;
    padding: 0 10px;
    font-size: 0.84rem;
  }

  .sidebar {
    width: var(--sidebar-width);
    background: transparent;
    border-right: none;
    backdrop-filter: none;
    overflow: visible;
    pointer-events: none;
  }

  .sidebar.is-open {
    width: var(--sidebar-width-open);
  }

  .sidebar-inner {
    width: var(--sidebar-width);
    padding: 10px 8px;
    pointer-events: auto;
  }

  .sidebar.is-open .sidebar-inner {
    width: var(--sidebar-width-open);
    min-height: calc(100dvh - 20px);
    background: rgba(7, 12, 22, 0.96);
    border-right: 1px solid var(--border);
    box-shadow: 16px 0 32px rgba(0, 0, 0, 0.28);
  }

  .sidebar-toggle {
    width: 42px;
    height: 42px;
  }

  .viewer-panel {
    width: 100%;
    height: calc(100dvh - 12px);
    border-radius: 10px;
  }

  .viewer-panel-header {
    padding: 8px 10px;
    min-height: 44px;
    align-items: flex-start;
    flex-direction: column;
  }

  .viewer-panel-actions {
    width: 100%;
    justify-items: stretch;
    gap: 8px;
  }

  .viewer-panel-meta {
    width: 100%;
    justify-content: space-between;
    gap: 8px;
  }

  .viewer-panel-subtitle {
    font-size: 0.78rem;
  }

  .variant-button {
    padding: 7px 10px;
    font-size: 0.9rem;
  }

  .viewer-controls {
    width: 100%;
    gap: 4px;
    justify-content: space-between;
  }

  .viewer-control-button {
    min-width: 0;
    flex: 1 1 0;
    height: 32px;
    font-size: 0.8rem;
  }

  .options-menu {
    left: 0;
    right: auto;
    bottom: calc(100% + 6px);
    min-width: 160px;
  }

  body.sidebar-expanded .toolbar,
  body.sidebar-expanded .page,
  body.sidebar-expanded .progress,
  body.sidebar-expanded .status {
    left: 0;
    inset-inline-start: 0;
  }

  .progress {
    left: 0;
    top: 0;
  }

  .status {
    left: 10px;
    right: 10px;
    bottom: 10px;
    font-size: 0.86rem;
  }
}