/* ── Reset & base ─────────────────────────────────────────────────────── */

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

:root {
  --bg:            #000000;
  --surface-hover: #242424;
  --border:        #2a2a2a;
  --text:          #e0e0e0;
  --text-muted:    #777;
  --text-faint:    #555;
  --accent:        #ffffff;
  --progress-h:    3px;
  --strip-h:       110px;
  --thumb-w:       80px;
  --thumb-h:       64px;
  --thumb-rise:    26px;
  --bottom-bar-h:  32px;
  --mono:          "SF Mono", "Fira Code", "Consolas", monospace;
}

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

/* ── Welcome screen ───────────────────────────────────────────────────── */

#welcome-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100vw;
  height: 100vh;
  background: var(--bg);
}

.welcome-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  padding: 0 24px;
}

/* ── "PICK" animated title ────────────────────────────────────────────── */

.app-name {
  font-size: 30px;
  font-weight: 300;
  letter-spacing: 0.3em;
  color: var(--text);
  text-transform: uppercase;
  font-family: var(--mono);
  /* Remove trailing letter-spacing gap on the last letter */
  margin-right: -0.3em;
  user-select: none;
}

.app-name span {
  display: inline-block;
  animation: pickLetterAnim 2.6s linear infinite;
}

.app-name span:nth-child(1) { animation-delay:   0ms; }
.app-name span:nth-child(2) { animation-delay: 175ms; }
.app-name span:nth-child(3) { animation-delay: 350ms; }
.app-name span:nth-child(4) { animation-delay: 525ms; }

@keyframes pickLetterAnim {
  0% {
    transform: translateY(0);
    animation-timing-function: cubic-bezier(0.34, 1.56, 0.64, 1); /* spring up */
  }
  7% {
    transform: translateY(-20px);
    /* hold — no easing needed when value doesn't change */
  }
  50% {
    transform: translateY(-20px);
    animation-timing-function: cubic-bezier(0.4, 0, 0.55, 1); /* smooth fall */
  }
  58% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(0);
  }
}

/* ── Welcome: browse button ───────────────────────────────────────────── */

#browse-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent);
  border: none;
  border-radius: 0;
  color: #000;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 12px 28px;
  transition: opacity 0.15s;
  white-space: nowrap;
}

#browse-btn:hover  { opacity: 0.85; }
#browse-btn:active { opacity: 0.7; }
#browse-btn:disabled { opacity: 0.5; cursor: default; }

.welcome-error {
  color: #e05555;
  font-size: 10px;
  text-align: center;
  letter-spacing: 0.06em;
}

/* ── Permission screen ────────────────────────────────────────────────── */

#permission-screen {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  z-index: 200;
}

.permission-message {
  color: var(--text);
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  line-height: 1.9;
  text-align: center;
}

.permission-hint {
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-align: center;
  margin-top: -8px;
}

#got-it-btn {
  background: var(--accent);
  border: none;
  color: #000;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 12px 28px;
  transition: opacity 0.15s;
  margin-top: 8px;
}

#got-it-btn:hover   { opacity: 0.85; }
#got-it-btn:active  { opacity: 0.7; }
#got-it-btn:disabled { opacity: 0.5; cursor: default; }

/* ── Culling screen layout ────────────────────────────────────────────── */

#culling-screen {
  display: flex;
  flex-direction: column;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  position: relative;
}

/* ── Progress bar ─────────────────────────────────────────────────────── */

#progress-bar {
  height: var(--progress-h);
  background: #111;
  flex-shrink: 0;
  position: relative;
  z-index: 5;
}

#progress-fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.2s ease;
  width: 0%;
}

/* ── Viewer ───────────────────────────────────────────────────────────── */

#viewer {
  flex: 1;
  position: relative;
  overflow: hidden;
  min-height: 0;
}

/* ── Image stage ──────────────────────────────────────────────────────── */

#image-stage {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
}

#image-stage.dragging-nav { cursor: ew-resize; }

#main-image {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
  transition: opacity 0.2s ease;
  user-select: none;
  -webkit-user-drag: none;
}

#main-image.loading { opacity: 0.5; }

#culling-screen.scrubbing #main-image {
  opacity: 0.25;
}

/* Loading spinner */
#image-loader {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
  z-index: 2;
}

#image-loader.visible { opacity: 1; }

.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid #1a1a1a;
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

/* ── Scrub overlay ────────────────────────────────────────────────────── */

#scrub-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  opacity: 0;
  transition: opacity 0.18s ease;
  pointer-events: none;
  z-index: 3;
}

#culling-screen.scrubbing #scrub-overlay {
  opacity: 1;
}

/* ── Scrub counter ────────────────────────────────────────────────────── */

#scrub-counter {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.18s ease;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 400;
  color: var(--accent);
  letter-spacing: 0.08em;
  white-space: nowrap;
  z-index: 10;
  text-transform: uppercase;
  user-select: none;
}

#culling-screen.scrubbing #scrub-counter {
  opacity: 1;
}

/* ── Top-left HUD ─────────────────────────────────────────────────────── */

#hud-left {
  position: absolute;
  top: calc(var(--progress-h) + 12px);
  left: 14px;
  z-index: 20;
  pointer-events: none;
  transition: opacity 0.18s ease;
}

#culling-screen.scrubbing #hud-left {
  opacity: 0;
}

#image-counter {
  display: inline-block;
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 10px;
  white-space: nowrap;
  padding: 2px 5px;
  transition: background 0.15s, color 0.15s;
}

#image-counter.is-picked {
  background: var(--accent);
  color: #000;
}

/* ── Top-right HUD ────────────────────────────────────────────────────── */

#hud-right {
  position: absolute;
  top: calc(var(--progress-h) + 12px);
  right: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
  z-index: 20;
}

#hud-right button {
  background: rgba(0, 0, 0, 0.65);
  border: 1px solid var(--border);
  border-radius: 0;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 9px;
  transition: color 0.15s, border-color 0.15s;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  white-space: nowrap;
}

#hud-right button:hover { color: var(--text); border-color: var(--text-muted); }
#mute-btn.muted { color: var(--text-faint); opacity: 0.55; }
#hotkeys-btn.active { color: var(--accent); border-color: var(--accent); }

/* ── Thumbnail strip ──────────────────────────────────────────────────── */

#thumb-strip-outer {
  height: var(--strip-h);
  flex-shrink: 0;
  background: var(--bg);
  overflow: hidden;
  position: relative;
}

#thumb-strip {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: var(--strip-h);
  display: flex;
  align-items: flex-end;
  padding-bottom: 10px;
  padding-left: 10px;
  padding-right: 10px;
  gap: 3px;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
}

#thumb-strip::-webkit-scrollbar { display: none; }

.thumb-item {
  flex-shrink: 0;
  width: var(--thumb-w);
  height: var(--thumb-h);
  border-radius: 0;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.22s cubic-bezier(0.34, 1.45, 0.64, 1),
              opacity 0.18s ease;
  outline: 2px solid transparent;
  outline-offset: 1px;
}

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

.thumb-item.is-current { outline-color: rgba(255, 255, 255, 0.65); }
.thumb-item.is-picked  { transform: translateY(calc(-1 * var(--thumb-rise))); }

.thumb-item.thumb-loading {
  animation: thumb-pulse 1.8s ease-in-out infinite;
}

@keyframes thumb-pulse {
  0%, 100% { background: #0d0d0d; }
  50%       { background: #1c1c1c; }
}

.thumb-item.is-entering {
  transform: translateY(32px) !important;
  opacity: 0 !important;
  transition: none !important;
}

.thumb-item.dropping {
  transform: translateY(32px) !important;
  opacity: 0 !important;
  transition: transform 0.24s ease-in, opacity 0.22s ease-in !important;
}

/* ── Bottom bar ───────────────────────────────────────────────────────── */

#bottom-bar {
  height: var(--bottom-bar-h);
  flex-shrink: 0;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

#bottom-normal {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 12px;
  gap: 12px;
}

#status-left {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

#status-lozenges {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.lozenge {
  display: inline-block;
  border: 1px solid #333;
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 1px 7px;
  white-space: nowrap;
}

#status-hint {
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

#export-btn {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  background: var(--accent);
  border: none;
  border-radius: 0;
  color: #000;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  transition: opacity 0.15s;
  white-space: nowrap;
}

#export-btn:hover  { opacity: 0.85; }
#export-btn:active { opacity: 0.7; }
#export-btn:disabled { opacity: 0.3; cursor: default; }

#bottom-hover {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  padding: 0 12px;
  background: var(--bg);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.12s ease;
}

#bottom-hover.visible { opacity: 1; }

#hover-filepath {
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 10px;
  text-transform: none;
  letter-spacing: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Hotkeys panel ────────────────────────────────────────────────────── */

#hotkeys-panel {
  position: absolute;
  top: calc(var(--progress-h) + 48px);
  right: 14px;
  background: rgba(8, 8, 8, 0.97);
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 14px 18px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 50;
  min-width: 300px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.7);
}

.hotkeys-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 18px;
  align-items: center;
}

.hotkeys-grid kbd {
  font-family: var(--mono);
  font-size: 10px;
  background: #1a1a1a;
  border: 1px solid #333;
  border-radius: 0;
  padding: 2px 7px;
  color: var(--text-muted);
  white-space: nowrap;
  justify-self: start;
  text-transform: uppercase;
}

.hotkeys-grid span {
  color: var(--text-muted);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.hotkeys-credit {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-align: center;
}

/* ── Toast ────────────────────────────────────────────────────────────── */

#toast-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 300;
  cursor: pointer;
  transition: opacity 0.4s ease;
}

#toast-overlay.fading {
  opacity: 0;
  pointer-events: none;
}

#toast {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text);
  pointer-events: none;
}

/* ── Confirm dialog ───────────────────────────────────────────────────── */

#confirm-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 300;
}

#confirm-dialog {
  text-align: center;
}

#confirm-message {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text);
  margin-bottom: 20px;
}

.confirm-buttons {
  display: flex;
  gap: 10px;
  justify-content: center;
}

#confirm-yes {
  background: var(--accent);
  border: none;
  border-radius: 0;
  color: #000;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 6px 16px;
  transition: opacity 0.15s;
}

#confirm-yes:hover  { opacity: 0.85; }
#confirm-yes:active { opacity: 0.7; }

#confirm-no {
  background: none;
  border: 1px solid var(--accent);
  border-radius: 0;
  color: var(--accent);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 6px 16px;
  transition: opacity 0.15s;
}

#confirm-no:hover { opacity: 0.7; }

/* ── Export overlay ───────────────────────────────────────────────────── */

#export-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

#export-dialog {
  background: #111;
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 28px 32px;
  width: 420px;
  max-width: calc(100vw - 48px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
}

#export-dialog h3 {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text);
  margin-bottom: 8px;
}

#export-summary {
  color: var(--text-muted);
  font-size: 10px;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.export-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.export-option-btn {
  background: #1a1a1a;
  border: 1px solid var(--border);
  border-radius: 0;
  color: var(--text);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  padding: 12px 16px;
  text-align: left;
  transition: border-color 0.15s, background 0.15s;
  width: 100%;
}

.export-option-btn:hover { background: #222; border-color: var(--accent); }

.export-option-btn strong {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.export-option-btn span {
  font-size: 10px;
  color: var(--text-muted);
  line-height: 1.5;
  text-transform: none;
  letter-spacing: 0;
}

.export-option-btn code {
  font-family: var(--mono);
  font-size: 10px;
  background: #252525;
  padding: 1px 4px;
}

.export-cancel {
  background: none;
  border: none;
  color: var(--text-faint);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 0;
  transition: color 0.15s;
  width: 100%;
  text-align: center;
}

.export-cancel:hover { color: var(--text-muted); }

.export-result {
  margin-top: 12px;
  padding: 10px 12px;
  background: #1a1a1a;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-muted);
  word-break: break-all;
  line-height: 1.6;
  white-space: pre-wrap;
  text-transform: none;
  letter-spacing: 0;
}

/* ── Fullscreen ───────────────────────────────────────────────────────── */

:fullscreen #culling-screen,
:-webkit-full-screen #culling-screen {
  width: 100vw;
  height: 100vh;
}