/* ============================================================
   Dirty Little Zine — UI styles
   ============================================================ */

:root {
  --bg:       #fafafa;
  --bg-card:  #ffffff;
  --text:     #0f0f0f;
  --muted:    #777777;
  --border:   #e2e2e2;
  --sidebar:  #f4f4f5;
  --stage:    #18181b;
  --accent:   #0f0f0f;
  --radius:   6px;
  --radius-sm: 4px;
  --font-ui:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Courier New', monospace;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --transition: 0.15s ease;
}

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

html, body {
  height: 100%;
  overflow: hidden;
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---- Top bar ---- */

header {
  height: 46px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  flex-shrink: 0;
  gap: 1rem;
}

.header-left {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1px;
  line-height: 1;
}

.logo {
  font-family: 'Mouse Memoirs', Impact, sans-serif;
  color: #ffffff;
  font-size: 1.25rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1;
  user-select: none;
}

.logo-by {
  font-family: 'Caveat', 'Segoe Script', cursive;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.78rem;
  font-weight: 500;
  text-decoration: none;
  line-height: 1;
  letter-spacing: 0.01em;
  white-space: nowrap;
  padding-left: 2px;
  transition: color var(--transition);
}

.logo-by span {
  font-weight: 600;
  color: rgba(255, 255, 255, 0.78);
}

.logo-by:hover,
.logo-by:hover span {
  color: #ffffff;
}

.logo-by:hover span {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.paper-toggle {
  display: flex;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(255,255,255,0.06);
}

.paper-toggle button {
  background: transparent;
  color: rgba(255,255,255,0.45);
  border: none;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  transition: all var(--transition);
}

.paper-toggle button.active {
  background: rgba(255,255,255,0.95);
  color: var(--accent);
  font-weight: 600;
}

.paper-toggle button:not(.active):hover {
  color: rgba(255,255,255,0.8);
  background: rgba(255,255,255,0.08);
}

.export-btn {
  background: transparent;
  color: rgba(255,255,255,0.55);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 0.3rem 0.75rem;
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  cursor: pointer;
  border-radius: var(--radius);
  transition: all var(--transition);
}

.export-btn:hover {
  color: #ffffff;
  border-color: rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.08);
}

.export-btn.primary {
  color: var(--accent);
  background: rgba(255,255,255,0.9);
  border-color: transparent;
  font-weight: 600;
}

.export-btn.primary:hover {
  background: #ffffff;
}

/* ---- Workspace ---- */

.workspace {
  display: flex;
  height: calc(100vh - 46px);
  overflow: hidden;
}

/* ---- Sidebar ---- */

#sidebar {
  width: 130px;
  flex-shrink: 0;
  background: var(--sidebar);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  overflow-x: hidden;
  padding: 0.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

#sidebar::-webkit-scrollbar { width: 3px; }
#sidebar::-webkit-scrollbar-track { background: transparent; }
#sidebar::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.12); border-radius: 3px; }

.slide-thumb {
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.3rem;
  border: 1.5px solid transparent;
  border-radius: var(--radius);
  transition: all var(--transition);
}

.slide-thumb:hover { border-color: #d0d0d0; background: rgba(0,0,0,0.02); }
.slide-thumb[draggable="true"] { cursor: grab; }
.slide-thumb[draggable="true"]:active { cursor: grabbing; }
.slide-thumb.dragging { opacity: 0.35; }
.slide-thumb.drag-over { border-color: var(--text); background: rgba(0,0,0,0.06); }

.slide-thumb.active {
  border-color: var(--text);
  background: rgba(0,0,0,0.03);
  box-shadow: var(--shadow-sm);
}

.slide-thumb canvas {
  display: block;
  width: 100%;
  height: auto;
  pointer-events: none;
  border-radius: 3px;
}

.slide-thumb-label {
  font-size: 0.56rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--muted);
  text-align: center;
  text-transform: uppercase;
  line-height: 1;
}

.slide-thumb.active .slide-thumb-label {
  color: var(--text);
  font-weight: 600;
}

/* ---- Main area ---- */

#main-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

/* ---- Slide stage ---- */

#slide-view {
  flex: 1;
  background: var(--stage);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  min-height: 0;
  padding: 1.5rem;
}

#slide-canvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  box-shadow: 0 12px 48px rgba(0,0,0,0.55), 0 2px 8px rgba(0,0,0,0.3);
  border-radius: 2px;
}

/* ---- Edit panel ---- */

#edit-panel {
  flex-shrink: 0;
  height: 180px;
  border-top: 1px solid var(--border);
  background: var(--bg-card);
  overflow-x: auto;
  overflow-y: hidden;
  display: flex;
  align-items: stretch;
  padding: 0 1.25rem;
  gap: 1.25rem;
}

/* Cover edit */

.cover-edit {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  width: 100%;
  padding: 0.9rem 0;
}

.cover-photo-zone {
  flex-shrink: 0;
  width: 96px;
  height: 140px;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
  background: rgba(0,0,0,0.015);
}

.cover-photo-zone:hover,
.cover-photo-zone.drag-over {
  border-color: var(--text);
  background: rgba(0,0,0,0.03);
}

.cover-photo-zone .drop-label {
  font-size: 0.58rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.05em;
  text-align: center;
  line-height: 1.6;
  pointer-events: none;
}

.cover-photo-zone .thumb {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: calc(var(--radius) - 1px);
}

.cover-photo-zone .remove-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 18px;
  height: 18px;
  font-size: 11px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  font-family: var(--font-ui);
  transition: background var(--transition);
}

.cover-photo-zone .remove-btn:hover { background: rgba(0,0,0,0.85); }

.cover-photo-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.cover-inputs {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 0.9rem 0;
  min-width: 0;
}

.cover-inputs .row {
  display: flex;
  gap: 0.5rem;
}

.edit-field {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  flex: 1;
}

.edit-field label {
  font-size: 0.6rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.edit-field input[type="text"] {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  outline: none;
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
}

.edit-field input[type="text"]:focus {
  border-color: var(--text);
  box-shadow: 0 0 0 2px rgba(15,15,15,0.08);
}

.edit-field input[type="text"]::placeholder { color: #c5c5c5; }

/* Font picker (in edit panel) */

.font-picker-row {
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
}

.font-btn {
  padding: 0.25rem 0.55rem;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  font-size: 0.82rem;
  transition: all var(--transition);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.font-btn:hover {
  border-color: #aaa;
  background: rgba(0,0,0,0.02);
}

.font-btn.active {
  border-color: var(--text);
  background: var(--text);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

/* Overlay slider */

.overlay-slider {
  width: 100%;
  height: 4px;
  cursor: pointer;
  accent-color: var(--text);
  border-radius: 2px;
}

/* Spread / page edit */

/* Side-by-side page columns */

.page-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.9rem 0;
  min-width: 0;
}

.page-col + .page-col {
  margin-left: 1.25rem;
  padding-left: 1.25rem;
  border-left: 1px solid var(--border);
}

.page-col-top {
  display: flex;
  align-items: flex-end;
  gap: 0.75rem;
}

.page-row-name {
  font-size: 0.56rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.page-col-controls {
  display: flex;
  flex-wrap: nowrap;
  gap: 1rem;
  align-items: flex-end;
}

.page-col-controls .edit-field {
  flex: 0 0 auto;
}

.page-col-controls .font-picker-row {
  flex-wrap: nowrap;
}

/* Back cover edit (simple column) */
.page-edit-col {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0.75rem 0;
}

.page-col-label {
  font-size: 0.6rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Page photo zone (spread panels — matches cover photo zone style) */

.page-photo-slots {
  flex-shrink: 0;
  display: flex;
  flex-direction: row;
  gap: 0.4rem;
  align-items: center;
}

.photo-swap-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 0.75rem;
  width: 20px;
  height: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  flex-shrink: 0;
  transition: all var(--transition);
  font-family: var(--font-ui);
}

.photo-swap-btn:hover {
  border-color: var(--text);
  color: var(--text);
  background: rgba(0,0,0,0.03);
}

.page-photo-zone {
  flex-shrink: 0;
  width: 80px;
  height: 56px;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
  background: rgba(0,0,0,0.015);
}

.page-photo-zone:hover,
.page-photo-zone.drag-over {
  border-color: var(--text);
  background: rgba(0,0,0,0.03);
}

.page-photo-zone .drop-label {
  font-size: 0.58rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.05em;
  text-align: center;
  line-height: 1.6;
  pointer-events: none;
}

.page-photo-zone .thumb {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: calc(var(--radius) - 1px);
}

.page-photo-zone .remove-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 18px;
  height: 18px;
  font-size: 11px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  font-family: var(--font-ui);
  transition: background var(--transition);
}

.page-photo-zone .remove-btn:hover { background: rgba(0,0,0,0.85); }

.page-photo-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

/* Legacy photo slots (back cover) */

.photo-slots {
  display: flex;
  gap: 0.3rem;
  align-items: stretch;
}

.photo-drop-zone {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
  background: rgba(0,0,0,0.015);
}

.photo-drop-zone:hover,
.photo-drop-zone.drag-over {
  border-color: var(--text);
  background: rgba(0,0,0,0.03);
}

.photo-drop-zone .drop-label {
  font-size: 0.56rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.04em;
  pointer-events: none;
}

.photo-drop-zone .thumb {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: calc(var(--radius-sm) - 1px);
}

.photo-drop-zone .remove-btn {
  position: absolute;
  top: 3px;
  right: 3px;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(4px);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 16px;
  height: 16px;
  font-size: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  font-family: var(--font-ui);
  transition: background var(--transition);
}

.photo-drop-zone .remove-btn:hover { background: rgba(0,0,0,0.85); }

.photo-drop-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.caption-input {
  width: 100%;
  font-family: var(--font-ui);
  font-size: 0.7rem;
  padding: 0.25rem 0.4rem;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  outline: none;
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: none;
  line-height: 1.3;
}

.caption-input:focus {
  border-color: var(--text);
  box-shadow: 0 0 0 2px rgba(15,15,15,0.08);
}

.caption-input::placeholder { color: #c5c5c5; font-size: 0.64rem; }

/* Page edit control buttons — use same .font-btn as cover */

.caption-ctrl-btn {
  min-width: 30px !important;
  text-align: center;
}

/* Disabled caption controls */
.edit-field.disabled {
  opacity: 0.3;
  pointer-events: none;
}