/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #6C63FF;
  --primary-dark: #5A52D5;
  --danger: #FF5F5F;
  --danger-dark: #E04E4E;
  --secondary: #3A3A4A;
  --bg: #0F0F1A;
  --surface: #1A1A2E;
  --surface2: #22223A;
  --border: #2E2E4A;
  --text: #E8E8F0;
  --text-muted: #888899;
  --marker-size: 36px;
  --panel-width: 400px;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* ===== Toolbar ===== */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 60px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  gap: 12px;
  z-index: 100;
  flex-shrink: 0;
  overflow-x: auto;
}

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

.toolbar-right {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: 8px;
}

.logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-right: 8px;
  white-space: nowrap;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover:not(:disabled) {
  background: var(--primary-dark);
  transform: translateY(-1px);
}
.btn-primary.active {
  background: #FF9F43;
  box-shadow: 0 0 0 3px rgba(255, 159, 67, 0.3);
}

.btn-secondary {
  background: var(--secondary);
  color: var(--text);
}
.btn-secondary:hover:not(:disabled) {
  background: #4A4A5A;
}

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
}
.btn-danger:hover:not(:disabled) {
  background: var(--danger);
  color: white;
}

.btn.large {
  padding: 12px 28px;
  font-size: 16px;
}

.btn.full-width {
  width: 100%;
  justify-content: center;
}


/* ===== Upload Area ===== */
.upload-area {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.upload-area.dragover .upload-inner {
  border-color: var(--primary);
  background: rgba(108, 99, 255, 0.05);
}

.upload-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 60px 80px;
  border: 2px dashed var(--border);
  border-radius: 20px;
  text-align: center;
  transition: all 0.2s;
}

.upload-icon {
  font-size: 64px;
}

.upload-inner h2 {
  font-size: 24px;
  color: var(--text);
}

.upload-inner p {
  color: var(--text-muted);
  font-size: 14px;
}

/* ===== Workspace ===== */
.workspace {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
  overflow: auto;
}

.workspace-hint {
  font-size: 13px;
  color: var(--text-muted);
  background: var(--surface);
  padding: 8px 16px;
  border-radius: 20px;
  margin-bottom: 16px;
  border: 1px solid var(--border);
}

.workspace-hint.placing {
  color: #FF9F43;
  border-color: #FF9F43;
  background: rgba(255, 159, 67, 0.1);
}

.image-container {
  position: relative;
  display: inline-block;
  border-radius: 12px;
  overflow: visible;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  cursor: default;
}

.image-container.placing {
  cursor: crosshair;
}

#mainImage {
  display: block;
  max-width: 100%;
  max-height: calc(100vh - 160px);
  border-radius: 12px;
  user-select: none;
  -webkit-user-drag: none;
}

/* ===== Markers ===== */
.marker {
  position: absolute;
  width: var(--marker-size);
  height: var(--marker-size);
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  transform: translate(-50%, -50%);
  box-shadow: 0 4px 16px rgba(108, 99, 255, 0.6);
  border: 3px solid white;
  transition: transform 0.2s, box-shadow 0.2s;
  z-index: 10;
  user-select: none;
  animation: markerPop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.marker:hover {
  transform: translate(-50%, -50%) scale(1.15);
  box-shadow: 0 6px 24px rgba(108, 99, 255, 0.8);
}

.marker.has-content {
  background: #27AE60;
  box-shadow: 0 4px 16px rgba(39, 174, 96, 0.6);
}

.marker.active {
  background: #FF9F43;
  box-shadow: 0 6px 24px rgba(255, 159, 67, 0.8);
  transform: translate(-50%, -50%) scale(1.2);
}

@keyframes markerPop {
  from { transform: translate(-50%, -50%) scale(0); opacity: 0; }
  to   { transform: translate(-50%, -50%) scale(1); opacity: 1; }
}

/* ===== Panel ===== */
.panel {
  position: fixed;
  top: 60px;
  right: 0;
  width: var(--panel-width);
  height: calc(100vh - 60px);
  background: var(--surface);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 200;
  /* 기본: 화면 밖 (display:none 미사용 → 애니메이션 정상 작동) */
  transform: translateX(100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.panel.panel-open {
  transform: translateX(0);
  opacity: 1;
  pointer-events: auto;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.panel-header h2 {
  font-size: 18px;
  color: var(--text);
}

.panel-header h2 span {
  color: var(--primary);
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  transition: all 0.2s;
  line-height: 1;
}
.close-btn:hover {
  color: var(--text);
  background: var(--surface2);
}

.panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.panel-body::-webkit-scrollbar {
  width: 6px;
}
.panel-body::-webkit-scrollbar-track {
  background: transparent;
}
.panel-body::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.section-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.panel-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.memory-textarea {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px;
  border-radius: 10px;
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  min-height: 100px;
  outline: none;
  transition: border-color 0.2s;
  line-height: 1.6;
}

.memory-textarea:focus {
  border-color: var(--primary);
}

.memory-textarea::placeholder {
  color: var(--text-muted);
}


/* ===== Divider ===== */
.panel-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.panel-divider::before,
.panel-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ===== Memory Result ===== */
.memory-result {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  min-height: 200px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
}

.result-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 200px;
  gap: 12px;
  color: var(--text-muted);
  text-align: center;
}

.result-placeholder span {
  font-size: 40px;
}

.result-placeholder p {
  font-size: 14px;
  line-height: 1.6;
}

.memory-result .loading {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 200px;
  gap: 10px;
  color: var(--text-muted);
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.memory-result .error {
  color: var(--danger);
  padding: 12px;
}

.memory-result strong {
  color: #BB9AF7;
}

.memory-result p {
  margin-bottom: 10px;
}

.memory-result p:last-child {
  margin-bottom: 0;
}

.location-tag {
  display: inline-block;
  background: rgba(108, 99, 255, 0.2);
  color: var(--primary);
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
  margin-bottom: 8px;
}

/* ===== Backdrop ===== */
.backdrop {
  position: fixed;
  inset: 60px 0 0 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 199;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.backdrop.backdrop-open {
  opacity: 1;
  pointer-events: auto;
}

/* ===== Hidden ===== */
.hidden {
  display: none !important;
}

/* ===== Folder Group ===== */
.folder-group {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px 6px 4px 10px;
}

.folder-icon {
  font-size: 14px;
}

.folder-label {
  font-size: 13px;
  color: var(--text-muted);
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.folder-label.has-folder {
  color: #27AE60;
  font-weight: 600;
}

.btn-change {
  background: var(--primary);
  color: white;
  border: none;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s;
}
.btn-change:hover {
  background: var(--primary-dark);
}

.btn-save {
  background: #27AE60;
  color: white;
  border: none;
}
.btn-save:hover:not(:disabled) {
  background: #219a52;
  transform: translateY(-1px);
}

.btn-load {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-load:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ===== File List Modal ===== */
.file-modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 300;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}
.file-modal.modal-open {
  opacity: 1;
  pointer-events: auto;
}

.file-modal-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: 480px;
  max-width: 90vw;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 64px rgba(0,0,0,0.6);
  transform: scale(0.95);
  transition: transform 0.25s;
}
.file-modal.modal-open .file-modal-box {
  transform: scale(1);
}

.file-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.file-modal-header h3 {
  font-size: 16px;
  font-weight: 600;
}

.file-list {
  overflow-y: auto;
  padding: 12px;
  flex: 1;
}
.file-list::-webkit-scrollbar { width: 6px; }
.file-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.file-list-loading,
.file-list-empty,
.file-list-error {
  text-align: center;
  color: var(--text-muted);
  padding: 40px 20px;
  font-size: 14px;
}
.file-list-error { color: var(--danger); }

.file-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s;
  border: 1px solid transparent;
}
.file-item:hover {
  background: var(--surface2);
  border-color: var(--border);
}

.file-item-icon { font-size: 28px; flex-shrink: 0; }

.file-item-info { flex: 1; min-width: 0; }
.file-item-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-item-date {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

.file-item-delete {
  background: none;
  border: none;
  font-size: 16px;
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  opacity: 0.4;
  transition: opacity 0.2s, background 0.2s;
  flex-shrink: 0;
}
.file-item:hover .file-item-delete { opacity: 1; }
.file-item-delete:hover { background: rgba(255,95,95,0.15); }

/* ===== Saved Toast ===== */
.saved-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: #27AE60;
  color: white;
  padding: 10px 20px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  z-index: 999;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s;
  opacity: 0;
  pointer-events: none;
}
.saved-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ===== Responsive ===== */
@media (max-width: 600px) {
  :root {
    --panel-width: 100vw;
  }
  .logo { display: none; }
}