:root {
  --bg: #0d0d0d;
  --surface: #161616;
  --surface2: #1e1e1e;
  --border: #2a2a2a;
  --accent: #e8ff57;
  --accent2: #ff5757;
  --text: #f0f0f0;
  --text-muted: #666;
  --text-dim: #444;
  --radius: 4px;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Space Mono', monospace;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Header ── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
}

.logo {
  font-family: 'Playfair Display', serif;
  font-size: 24px;
  letter-spacing: 6px;
  color: var(--accent);
}

.header-info {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* ── Main Layout ── */
main {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 0;
  min-height: calc(100vh - 65px);
}

/* ── Viewfinder ── */
.viewfinder-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px;
  border-right: 1px solid var(--border);
  background:
    radial-gradient(ellipse at 20% 50%, rgba(232,255,87,0.03) 0%, transparent 60%),
    var(--bg);
}

/* 세로형 뷰파인더 — 3:4 비율 */
.viewfinder-wrap {
  position: relative;
  width: auto;
  max-width: 360px;
  width: 100%;
  aspect-ratio: 3/4;
  background: #000;
  border: 1px solid var(--border);
  overflow: hidden;
}

/* corner brackets */
.viewfinder-wrap::before,
.viewfinder-wrap::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 24px;
  z-index: 10;
}
.viewfinder-wrap::before {
  top: 12px; left: 12px;
  border-top: 2px solid var(--accent);
  border-left: 2px solid var(--accent);
}
.viewfinder-wrap::after {
  bottom: 12px; right: 12px;
  border-bottom: 2px solid var(--accent);
  border-right: 2px solid var(--accent);
}
.bracket-tr {
  position: absolute;
  top: 12px; right: 12px;
  width: 24px; height: 24px;
  border-top: 2px solid var(--accent);
  border-right: 2px solid var(--accent);
  z-index: 10;
}
.bracket-bl {
  position: absolute;
  bottom: 12px; left: 12px;
  width: 24px; height: 24px;
  border-bottom: 2px solid var(--accent);
  border-left: 2px solid var(--accent);
  z-index: 10;
}

#video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: scaleX(-1); /* mirror */
}

/* scan line effect */
.scan-overlay {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 3px,
    rgba(0,0,0,0.08) 3px,
    rgba(0,0,0,0.08) 4px
  );
  pointer-events: none;
  z-index: 5;
}

/* flash effect */
.flash {
  position: absolute;
  inset: 0;
  background: white;
  opacity: 0;
  pointer-events: none;
  z-index: 20;
  transition: opacity 0s;
}
.flash.active {
  animation: flashAnim 0.4s ease-out forwards;
}
@keyframes flashAnim {
  0%   { opacity: 1; }
  100% { opacity: 0; }
}

/* HUD overlays */
.hud-top {
  position: absolute;
  top: 14px; left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  letter-spacing: 2px;
  color: rgba(232,255,87,0.7);
  z-index: 10;
  pointer-events: none;
  white-space: nowrap;
}
.hud-shot {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-size: 13px;
  letter-spacing: 3px;
  color: rgba(232,255,87,0.85);
  z-index: 10;
  pointer-events: none;
  white-space: nowrap;
}
.hud-bottom {
  position: absolute;
  bottom: 14px; left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  letter-spacing: 2px;
  color: rgba(232,255,87,0.5);
  z-index: 10;
  pointer-events: none;
}

/* REC dot */
.rec-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent2);
  margin-right: 6px;
  animation: blink 1.2s infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.2; }
}

/* 카운트다운 오버레이 */
.countdown-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 22;
  pointer-events: none;
}
.countdown-overlay.visible {
  display: flex;
}
.countdown-number {
  font-family: 'Playfair Display', serif;
  font-size: 96px;
  color: var(--accent);
  line-height: 1;
  text-shadow: 0 0 40px rgba(232,255,87,0.6);
  animation: countPulse 0.5s ease-out;
}
@keyframes countPulse {
  0%   { transform: scale(1.3); opacity: 0.5; }
  100% { transform: scale(1);   opacity: 1; }
}
.countdown-label {
  font-size: 11px;
  letter-spacing: 3px;
  color: rgba(255,255,255,0.7);
  text-transform: uppercase;
}

/* ── Controls ── */
.controls {
  display: flex;
  gap: 16px;
  margin-top: 28px;
  align-items: center;
}

.btn {
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-shutter {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg);
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 3px var(--bg), 0 0 0 5px var(--accent);
  transition: transform 0.1s, box-shadow 0.1s;
}
.btn-shutter:hover:not(:disabled) {
  transform: scale(1.06);
  box-shadow: 0 0 0 3px var(--bg), 0 0 0 6px var(--accent), 0 0 24px rgba(232,255,87,0.3);
}
.btn-shutter:active:not(:disabled) {
  transform: scale(0.95);
}
.btn-shutter:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  box-shadow: 0 0 0 3px var(--bg), 0 0 0 5px var(--border);
  background: var(--border);
}

.btn-secondary {
  padding: 12px 20px;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  letter-spacing: 1.5px;
}
.btn-secondary:hover {
  border-color: var(--text-muted);
  color: var(--text);
}

.btn-start {
  padding: 14px 28px;
  background: var(--accent);
  color: var(--bg);
  font-weight: bold;
  letter-spacing: 2px;
}
.btn-start:hover {
  background: #f0ff80;
}

/* start screen */
.start-screen {
  position: absolute;
  inset: 0;
  background: var(--surface);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  z-index: 30;
}
.start-screen .icon { font-size: 48px; }
.start-screen p {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-align: center;
  line-height: 1.8;
}

/* counter badge */
.counter-badge {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 2px;
  margin-left: 8px;
}

/* ── Sidebar ── */
.sidebar {
  background: var(--surface);
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 24px 24px 16px;
  border-bottom: 1px solid var(--border);
}
.sidebar-header h2 {
  font-family: 'Playfair Display', serif;
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 3px;
  color: var(--text);
}
.sidebar-header p {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 4px;
  letter-spacing: 1px;
}

/* Gallery grid — 스트립은 세로 비율이므로 1열로 */
#gallery {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  align-content: start;
}
#gallery::-webkit-scrollbar { width: 4px; }
#gallery::-webkit-scrollbar-track { background: transparent; }
#gallery::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.gallery-empty {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  gap: 10px;
  color: var(--text-dim);
}
.gallery-empty .empty-icon { font-size: 32px; opacity: 0.4; }
.gallery-empty p { font-size: 11px; letter-spacing: 1.5px; text-align: center; line-height: 1.8; }

/* Photo card — 스트립 세로 비율 (3:4 사진 3장 + 헤더/푸터: 약 3:13) */
.photo-card {
  position: relative;
  aspect-ratio: 3/13;
  background: #000;
  border: 1px solid var(--border);
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.15s;
  animation: cardIn 0.3s ease-out;
}
@keyframes cardIn {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 1; transform: scale(1); }
}
.photo-card:hover { border-color: var(--accent); transform: scale(1.02); }
.photo-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  /* 스트립 이미지는 미러 반전 없이 표시 */
}
.photo-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 40%);
  opacity: 0;
  transition: opacity 0.2s;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 8px;
  gap: 4px;
}
.photo-card:hover .photo-card-overlay { opacity: 1; }
.photo-card-time {
  font-size: 9px;
  color: rgba(255,255,255,0.6);
  letter-spacing: 1px;
}
.photo-card-actions {
  display: flex;
  gap: 6px;
}
.card-btn {
  flex: 1;
  padding: 5px 0;
  font-family: 'Space Mono', monospace;
  font-size: 9px;
  letter-spacing: 1px;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
}
.card-btn-dl {
  background: var(--accent);
  color: var(--bg);
}
.card-btn-dl:hover { background: #f0ff80; }
.card-btn-del {
  background: rgba(255,87,87,0.2);
  color: var(--accent2);
  border: 1px solid rgba(255,87,87,0.3);
}
.card-btn-del:hover { background: rgba(255,87,87,0.4); }

/* index label */
.photo-index {
  position: absolute;
  top: 6px; left: 6px;
  background: rgba(0,0,0,0.5);
  font-size: 9px;
  color: var(--accent);
  letter-spacing: 1px;
  padding: 2px 5px;
}

/* ── Save-all footer ── */
.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border);
}
.btn-save-all {
  width: 100%;
  padding: 14px;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.15s;
}
.btn-save-all:hover {
  background: var(--accent);
  color: var(--bg);
}
.btn-save-all:disabled {
  border-color: var(--border);
  color: var(--text-dim);
  cursor: not-allowed;
  background: transparent;
}

/* ── Camera toggle button ── */
.btn-cam-toggle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: transparent;
  border: 2px solid var(--border);
  color: var(--text-muted);
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
}
.btn-cam-toggle:hover {
  border-color: var(--accent2);
  color: var(--accent2);
  box-shadow: 0 0 12px rgba(255,87,87,0.2);
}
.btn-cam-toggle.cam-on {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 3px var(--accent);
}
.btn-cam-toggle.cam-on:hover {
  border-color: var(--accent2);
  color: var(--accent2);
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 3px var(--accent2), 0 0 12px rgba(255,87,87,0.25);
}

/* OFF overlay on viewfinder */
.cam-off-overlay {
  position: absolute;
  inset: 0;
  background: var(--surface);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  z-index: 25;
}
.cam-off-overlay .off-icon { font-size: 36px; opacity: 0.4; }
.cam-off-overlay p {
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 2px;
}

/* ── Filter strip ── */
.filter-strip-wrap {
  width: 100%;
  max-width: 360px;
  margin-top: 14px;
  display: none; /* shown after camera starts */
}
.filter-strip-label {
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--text-dim);
  margin-bottom: 8px;
  text-transform: uppercase;
}
.filter-strip {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.filter-strip::-webkit-scrollbar { height: 3px; }
.filter-strip::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.filter-chip {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  padding: 4px 2px;
  border-bottom: 2px solid transparent;
  transition: border-color 0.15s;
}
.filter-chip.active { border-bottom-color: var(--accent); }

.filter-thumb {
  width: 42px;
  height: 56px;
  border-radius: 2px;
  overflow: hidden;
  border: 1px solid var(--border);
  position: relative;
  background: #1a1a1a;
  transition: border-color 0.15s;
}
.filter-chip.active .filter-thumb { border-color: var(--accent); }
.filter-chip:hover .filter-thumb { border-color: var(--text-muted); }

.filter-thumb canvas {
  width: 100%;
  height: 100%;
  display: block;
}
/* placeholder while camera not started */
.filter-thumb-placeholder {
  width: 100%;
  height: 100%;
  background: var(--surface2);
}

.filter-chip-name {
  font-size: 8px;
  letter-spacing: 1px;
  color: var(--text-muted);
  text-transform: uppercase;
  white-space: nowrap;
}
.filter-chip.active .filter-chip-name { color: var(--accent); }

/* hidden canvases */
#canvas { display: none; }
#stripCanvas { display: none; }

/* ── Responsive ── */
@media (max-width: 900px) {
  main { grid-template-columns: 1fr; }
  .sidebar { border-top: 1px solid var(--border); }
  header { padding: 16px 20px; }
  .viewfinder-panel { padding: 20px; }
  .viewfinder-wrap { max-width: 280px; }
  .filter-strip-wrap { max-width: 280px; }
}