:root {
  color-scheme: dark;
  --viewer-bg: #060606;
  --viewer-panel: rgba(14, 14, 16, 0.84);
  --viewer-border: rgba(255, 255, 255, 0.12);
  --viewer-text: #f4f4f4;
  --viewer-muted: #b8b8b8;
  --viewer-accent: #d17340;
  --viewer-accent-soft: rgba(209, 115, 64, 0.2);
  --viewer-shadow: 0 18px 50px rgba(0, 0, 0, 0.32);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: radial-gradient(circle at top, #1a1a1d 0%, #090909 48%, #040404 100%);
  color: var(--viewer-text);
}

button,
input,
textarea {
  font: inherit;
}

.viewer-app {
  position: relative;
  width: 100%;
  height: 100%;
}

#viewerCanvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}

#viewerCanvas.is-dragging {
  cursor: grabbing;
}

.viewer-topbar {
  position: fixed;
  top: 16px;
  left: 16px;
  right: 16px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  pointer-events: none;
  z-index: 12;
}

.viewer-pill {
  pointer-events: auto;
  max-width: min(52vw, 420px);
  padding: 10px 14px;
  border: 1px solid var(--viewer-border);
  border-radius: 999px;
  background: var(--viewer-panel);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--viewer-shadow);
}

.viewer-title {
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.viewer-subtitle {
  margin-top: 2px;
  font-size: 0.72rem;
  color: var(--viewer-muted);
}

.viewer-status {
  font-size: 0.78rem;
  align-self: flex-start;
}

.viewer-loading,
.viewer-error {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  z-index: 15;
  padding: 12px 16px;
  border-radius: 16px;
  border: 1px solid var(--viewer-border);
  background: rgba(14, 14, 16, 0.92);
  box-shadow: var(--viewer-shadow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.viewer-loading {
  top: 82px;
  min-width: min(70vw, 320px);
}

.viewer-loading-title {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--viewer-muted);
}

.viewer-loading-message {
  margin-top: 6px;
  font-size: 0.92rem;
}

.viewer-loading-bar {
  margin-top: 10px;
  width: 100%;
  height: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.viewer-loading-fill {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--viewer-accent) 0%, #ffb176 100%);
  transition: width 180ms ease;
}

.viewer-error {
  top: 142px;
  max-width: min(80vw, 520px);
  color: #ffd0d0;
  border-color: rgba(255, 96, 96, 0.28);
  background: rgba(40, 10, 10, 0.92);
}

.viewer-error.hidden,
.viewer-loading.hidden,
.viewer-modal.hidden {
  display: none;
}

.viewer-tray {
  position: fixed;
  left: 14px;
  right: 14px;
  bottom: 14px;
  z-index: 11;
  padding: 10px;
  border: 1px solid var(--viewer-border);
  border-radius: 22px;
  background: var(--viewer-panel);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--viewer-shadow);
}

.viewer-gallery {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
}

.viewer-gallery::-webkit-scrollbar {
  width: 0;
  height: 0;
}

.viewer-thumb {
  border: none;
  background: transparent;
  color: inherit;
  width: 168px;
  min-width: 168px;
  padding: 0;
  cursor: pointer;
  text-align: left;
}

.viewer-thumb-media {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 16px;
  border: 1px solid var(--viewer-border);
  background: #111 center / cover no-repeat;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.02);
}

.viewer-thumb:hover .viewer-thumb-media,
.viewer-thumb.is-active .viewer-thumb-media {
  border-color: rgba(209, 115, 64, 0.72);
  box-shadow: 0 0 0 2px var(--viewer-accent-soft);
}

.viewer-thumb-label {
  padding: 8px 4px 0;
  font-size: 0.74rem;
  color: var(--viewer-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.viewer-hotspot-hint {
  position: fixed;
  right: 16px;
  bottom: 160px;
  z-index: 12;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--viewer-border);
  background: rgba(10, 10, 12, 0.8);
  color: var(--viewer-muted);
  font-size: 0.76rem;
  box-shadow: var(--viewer-shadow);
}

.viewer-modal {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  background: rgba(0, 0, 0, 0.68);
  padding: 18px;
}

.viewer-modal-card {
  width: min(780px, 100%);
  max-height: min(88vh, 920px);
  overflow: auto;
  border-radius: 24px;
  border: 1px solid var(--viewer-border);
  background: rgba(15, 15, 17, 0.96);
  box-shadow: var(--viewer-shadow);
}

.viewer-modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.viewer-modal-title {
  font-size: 0.96rem;
  font-weight: 700;
}

.viewer-modal-close {
  width: 38px;
  height: 38px;
  border: 1px solid var(--viewer-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--viewer-text);
  cursor: pointer;
}

.viewer-modal-body {
  padding: 18px;
}

.viewer-modal-body img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 16px;
}

.viewer-modal-text {
  white-space: pre-wrap;
  line-height: 1.55;
  color: #dfdfdf;
}

.viewer-modal-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(209, 115, 64, 0.36);
  background: rgba(209, 115, 64, 0.1);
  color: #ffd1b8;
  text-decoration: none;
}

@media (max-width: 720px) {
  .viewer-topbar {
    flex-direction: column;
    align-items: stretch;
    right: 12px;
  }

  .viewer-pill {
    max-width: none;
  }

  .viewer-status {
    align-self: stretch;
  }

  .viewer-thumb {
    width: 132px;
    min-width: 132px;
  }

  .viewer-hotspot-hint {
    display: none;
  }

  .viewer-guided-nav {
    bottom: 180px;
  }
} ─────────────────────────────────────────────── */
.viewer-guided-nav {
  position: fixed;
  bottom: 120px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 12;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border: 1px solid var(--viewer-border);
  border-radius: 999px;
  background: var(--viewer-panel);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--viewer-shadow);
  pointer-events: auto;
}

.viewer-guided-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--viewer-border);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  color: var(--viewer-text);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  transition: background 160ms, border-color 160ms, color 160ms;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.viewer-guided-btn:hover:not(:disabled) {
  background: var(--viewer-accent-soft);
  border-color: rgba(209, 115, 64, 0.4);
  color: var(--viewer-accent);
}

.viewer-guided-btn:disabled {
  opacity: 0.3;
  cursor: default;
}

.viewer-guided-step {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--viewer-muted);
  min-width: 52px;
  text-align: center;
  letter-spacing: 0.04em;
}

/* ── macOS Dock Gallery ─────────────────────────────────────────── */
.viewer-gallery {
  align-items: flex-end;
}

.viewer-thumb {
  width: 64px;
  min-width: 64px;
  transform: scale(var(--dock-scale, 1));
  transform-origin: bottom center;
  transition: transform 100ms ease-out;
}

.viewer-thumb-media {
  aspect-ratio: 1;
  border-radius: 10px;
}

.viewer-thumb-label {
  padding: 4px 2px 0;
  font-size: 0.65rem;
}