/* ============================================================
   FBISE Booklet — Stamp Field Designer
   Design system + responsive layout
   ============================================================ */

:root {
  /* surfaces */
  --bg:           #0f1115;
  --surface-1:    #161922;
  --surface-2:    #1c2030;
  --surface-3:    #232838;
  --border:       #262b3a;
  --border-strong:#343a4d;

  /* text */
  --text:         #e7e9ee;
  --text-dim:     #8a93a5;
  --text-mute:    #5d6577;

  /* brand / accent */
  --accent:       #5b8def;
  --accent-2:     #4673d6;
  --accent-soft:  rgba(91, 141, 239, 0.14);
  --accent-glow:  rgba(91, 141, 239, 0.32);

  /* semantic */
  --danger:       #ef4d5d;
  --danger-soft:  rgba(239, 77, 93, 0.14);
  --warning:      #f5a623;
  --success:      #2ecc71;

  /* field-type chips & boxes */
  --barcode:        rgba(245, 166, 35, 0.22);
  --barcode-stroke: #c97d10;
  --barcode-ink:    #ffb547;
  --qr:             rgba(46, 204, 113, 0.22);
  --qr-stroke:      #1a8f4d;
  --qr-ink:         #4ade80;
  --text-fld:       rgba(91, 141, 239, 0.22);
  --text-stroke:    #4673d6;
  --text-ink:       #93b4ff;

  /* spacing & shape */
  --r-sm: 4px;
  --r-md: 6px;
  --r-lg: 10px;
  --r-pill: 999px;

  --shadow-sm: 0 1px 0 rgba(255,255,255,0.04) inset, 0 1px 2px rgba(0,0,0,0.25);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.35);
  --shadow-pop:0 12px 32px rgba(0,0,0,0.45);

  --t-fast: 120ms cubic-bezier(.2,.7,.3,1);
  --t-base: 200ms cubic-bezier(.2,.7,.3,1);

  /* layout sizes (overridable per breakpoint) */
  --toolbar-h: 52px;
  --statusbar-h: 28px;
  --sidebar-w: 340px;
  --ruler-px: 22px;
}

/* ============================================================ reset */

*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: 'Inter', -apple-system, 'Segoe UI', Roboto, sans-serif;
  font-size: 13px;
  line-height: 1.45;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(91,141,239,0.06), transparent 60%),
    radial-gradient(1000px 500px at 110% 10%, rgba(91,141,239,0.04), transparent 60%),
    var(--bg);
  display: grid;
  grid-template-rows: auto 1fr auto;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
::selection { background: var(--accent-soft); color: var(--text); }

/* unified focus ring */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-radius: var(--r-sm);
}

/* native scrollbars */
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: var(--r-pill); border: 2px solid transparent; background-clip: padding-box; }
*::-webkit-scrollbar-thumb:hover { background: #4a516a; background-clip: padding-box; border: 2px solid transparent; }

/* ============================================================ toolbar */

.toolbar {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  align-items: center;
  padding: 8px 14px;
  background: linear-gradient(180deg, var(--surface-2), var(--surface-1));
  border-bottom: 1px solid var(--border);
  z-index: 5;
}

.tb-group {
  display: flex;
  align-items: center;
  gap: 6px;
  padding-right: 14px;
  position: relative;
}
.tb-group + .tb-group::before {
  content: '';
  position: absolute;
  left: -8px;
  top: 18%;
  bottom: 18%;
  width: 1px;
  background: var(--border);
}
.tb-group label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-dim);
  font-size: 12px;
  white-space: nowrap;
}
.tb-group label:has(input[type=checkbox]) { cursor: pointer; }

/* ============================================================ buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 32px;
  padding: 0 12px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text);
  background: var(--surface-3);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  transition: background var(--t-fast), border-color var(--t-fast),
              color var(--t-fast), transform var(--t-fast);
}
.btn:hover  { background: #2c3245; border-color: #444a5e; }
.btn:active { transform: translateY(1px); }
.btn.primary {
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  border-color: var(--accent-2);
  color: #fff;
  box-shadow: 0 6px 20px -8px var(--accent-glow);
}
.btn.primary:hover  { filter: brightness(1.08); }
.btn.ghost { background: transparent; border-color: var(--border); color: var(--text-dim); }
.btn.ghost:hover { background: var(--surface-2); color: var(--text); }
.btn.danger {
  background: linear-gradient(180deg, var(--danger), #cc3e4c);
  border-color: #b73a47;
  color: #fff;
}
.btn.danger:hover { filter: brightness(1.08); }
.btn.danger.ghost { background: transparent; color: var(--danger); border-color: var(--danger); }
.btn.danger.ghost:hover { background: var(--danger-soft); }

/* file-input look as button */
.btn input[type=file] { display: none; }

/* ============================================================ form controls */

select, input[type=text], input[type=number] {
  background: var(--surface-1);
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  padding: 6px 9px;
  min-height: 32px;
  font-size: 12.5px;
  transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
}
select:hover, input[type=text]:hover, input[type=number]:hover {
  border-color: var(--accent-2);
}
select:focus, input[type=text]:focus, input[type=number]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
select {
  appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--text-dim) 50%),
    linear-gradient(135deg, var(--text-dim) 50%, transparent 50%);
  background-position:
    calc(100% - 14px) 50%,
    calc(100% - 9px)  50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 26px;
}
input[type=checkbox] {
  accent-color: var(--accent);
  width: 14px;
  height: 14px;
  cursor: pointer;
}

/* pager */
.pager {
  display: inline-flex;
  align-items: center;
  background: var(--surface-1);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  overflow: hidden;
}
.pager .btn {
  background: transparent;
  border: 0;
  border-radius: 0;
  min-height: 30px;
  padding: 0 8px;
  color: var(--text-dim);
  font-size: 14px;
}
.pager .btn:hover { background: var(--surface-2); color: var(--text); }
.pager input[type=number] {
  width: 48px;
  text-align: center;
  border: 0;
  background: transparent;
  min-height: 30px;
  padding: 0;
  font-family: 'JetBrains Mono', ui-monospace, Consolas, monospace;
}
.pager input[type=number]::-webkit-inner-spin-button,
.pager input[type=number]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
.pager input[type=number] { -moz-appearance: textfield; }
.pager .dim { padding: 0 8px; font-family: 'JetBrains Mono', ui-monospace, Consolas, monospace; }

/* ============================================================ workspace layout */

.workspace {
  display: grid;
  grid-template-columns: 1fr var(--splitter-w, 6px) var(--sidebar-w);
  min-height: 0;
  overflow: hidden;
}

/* ---------- splitter ---------- */
.splitter {
  position: relative;
  background: transparent;
  cursor: col-resize;
  touch-action: none;
  user-select: none;
  transition: background var(--t-fast);
  border-left:  1px solid var(--border);
  border-right: 1px solid var(--border);
}
.splitter::before {
  /* tall grip indicator centred vertically */
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 2px;
  height: 36px;
  border-radius: var(--r-pill);
  background: var(--border-strong);
  transition: background var(--t-fast), height var(--t-fast);
}
.splitter:hover,
.splitter.dragging {
  background: var(--accent-soft);
}
.splitter:hover::before,
.splitter.dragging::before {
  background: var(--accent);
  height: 56px;
}
.splitter:focus-visible {
  outline: none;
  background: var(--accent-soft);
}
.splitter:focus-visible::before { background: var(--accent); }

/* while dragging — kill text-selection cursor across the whole page */
body.is-resizing,
body.is-resizing * { cursor: col-resize !important; user-select: none !important; }

/* ============================================================ canvas */

.canvas-wrap {
  background:
    radial-gradient(800px 400px at 50% 0%, rgba(91,141,239,0.04), transparent 60%),
    #0a0c12;
  overflow: auto;
  position: relative;
  padding: 28px;
}
.stage-with-rulers {
  display: inline-grid;
  grid-template-columns: var(--ruler-px) auto;
  grid-template-rows:    var(--ruler-px) auto;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-pop);
  overflow: hidden;
}
.ruler-corner {
  grid-column: 1; grid-row: 1;
  background: var(--surface-3);
  border-right:  1px solid var(--border);
  border-bottom: 1px solid var(--border);
  font-size: 9px;
  font-weight: 600;
  color: var(--text-mute);
  display: grid;
  place-items: center;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.ruler { display: block; background: var(--surface-3); }
.ruler-h { grid-column: 2; grid-row: 1; border-bottom: 1px solid var(--border); height: var(--ruler-px); }
.ruler-v { grid-column: 1; grid-row: 2; border-right:  1px solid var(--border); width:  var(--ruler-px); }

.canvas-stage {
  position: relative;
  grid-column: 2; grid-row: 2;
  background: white;
}
#pdfCanvas { display: block; }

.overlay  { position: absolute; inset: 0; }
.guide    { position: absolute; background: rgba(91, 141, 239, 0.55); pointer-events: none; display: none; }
.guide-x  { top: 0; bottom: 0; width: 1px; box-shadow: 0 0 8px rgba(91, 141, 239, 0.6); }
.guide-y  { left: 0; right: 0; height: 1px; box-shadow: 0 0 8px rgba(91, 141, 239, 0.6); }
.guide.active { display: block; }

.empty-hint {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--text-mute);
  font-style: italic;
  text-align: center;
  padding: 24px;
  pointer-events: none;
  letter-spacing: 0.01em;
}

/* ============================================================ field boxes */

.field-box {
  position: absolute;
  border: 1.5px solid var(--barcode-stroke);
  background: var(--barcode);
  color: var(--barcode-ink);
  font-size: 11px;
  font-weight: 600;
  pointer-events: auto;
  cursor: move;
  user-select: none;
  touch-action: none;
  overflow: visible;
  transition: box-shadow var(--t-fast);
}
.field-box.qr   { border-color: var(--qr-stroke);   background: var(--qr);       color: var(--qr-ink); }
.field-box.text { border-color: var(--text-stroke); background: var(--text-fld); color: var(--text-ink); }

.field-box .tag {
  position: absolute;
  top: -18px;
  left: 0;
  background: rgba(15,17,21,0.92);
  color: #d8def0;
  padding: 1px 6px;
  border-radius: var(--r-sm);
  font: 500 10px/1.4 'JetBrains Mono', ui-monospace, Consolas, monospace;
  letter-spacing: 0.02em;
  white-space: nowrap;
  pointer-events: none;
  border: 1px solid var(--border);
}
.field-box.selected {
  outline: 2px solid #fff;
  outline-offset: -2px;
  box-shadow: 0 0 0 4px rgba(255,255,255,0.10);
  z-index: 5;
}
.field-box.primary { box-shadow: 0 0 0 4px var(--accent-soft), 0 0 0 1px var(--accent) inset; }

.field-box .handle {
  position: absolute;
  width: 10px;
  height: 10px;
  background: #fff;
  border: 1px solid #1a1d22;
  border-radius: 2px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.4);
}
.field-box .h-nw { left: -6px; top:    -6px; cursor: nwse-resize; }
.field-box .h-ne { right:-6px; top:    -6px; cursor: nesw-resize; }
.field-box .h-sw { left: -6px; bottom: -6px; cursor: nesw-resize; }
.field-box .h-se { right:-6px; bottom: -6px; cursor: nwse-resize; }
.field-box.text .handle { display: none; }

.field-box .text-preview {
  position: absolute;
  white-space: nowrap;
  pointer-events: none;
  color: #111;
  background: rgba(255,255,255,0.92);
  padding: 0 3px;
  border-radius: 2px;
}

.marquee {
  position: absolute;
  border: 1px dashed var(--accent);
  background: var(--accent-soft);
  pointer-events: none;
  z-index: 10;
  border-radius: 2px;
}

/* ============================================================ sidebar + panels */

.sidebar {
  background: linear-gradient(180deg, var(--surface-1), #14171f);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.panel {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 14px;
  box-shadow: var(--shadow-sm);
}
.panel h3 {
  margin: 0 0 12px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--text-mute);
  display: flex;
  align-items: center;
  gap: 8px;
}
.panel h3 .dim {
  font-size: 10.5px;
  letter-spacing: 0;
  text-transform: none;
  color: var(--text-mute);
  font-weight: 400;
}
.panel fieldset {
  border: 1px dashed var(--border-strong);
  border-radius: var(--r-md);
  padding: 8px 12px 12px;
  margin: 10px 0 0;
}
.panel fieldset legend { color: var(--text-mute); padding: 0 6px; font-size: 11px; letter-spacing: 0.05em; text-transform: uppercase; }

.grid2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 10px;
}
.grid2 label, .panel > label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--text-dim);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.grid2 label.span2 { grid-column: span 2; }
.grid2 input, .grid2 select { color: var(--text); text-transform: none; letter-spacing: 0; font-weight: 400; }
.row {
  display: flex;
  gap: 6px;
  align-items: flex-end;
  margin-top: 10px;
  flex-wrap: wrap;
}
.row label { color: var(--text-dim); font-size: 10.5px; }
.empty { color: var(--text-mute); font-style: italic; padding: 6px 2px; font-size: 12px; }
.dim { color: var(--text-dim); font-weight: normal; }

/* ============================================================ field list */

.field-list {
  list-style: none;
  margin: 0;
  padding: 4px;
  max-height: 260px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--surface-1);
}
.field-list:empty { display: none; }
.field-list-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: var(--r-sm);
  cursor: pointer;
  user-select: none;
  font-size: 12px;
  transition: background var(--t-fast);
}
.field-list-row + .field-list-row { margin-top: 2px; }
.field-list-row:hover { background: rgba(255,255,255,0.04); }
.field-list-row.selected { background: var(--accent-soft); }
.field-list-row.primary { box-shadow: inset 0 0 0 1px var(--accent); }
.field-list-row.drop-above { border-top: 2px solid var(--accent); margin-top: 0; padding-top: 4px; }
.field-list-row.drop-below { border-bottom: 2px solid var(--accent); padding-bottom: 4px; }
.field-list-row .grip { color: var(--text-mute); cursor: grab; font-size: 10px; opacity: 0.6; }
.field-list-row .order { color: var(--text-mute); width: 24px; text-align: right; font-family: 'JetBrains Mono', ui-monospace, Consolas, monospace; }
.field-list-row .value { flex: 1; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 500; }
.field-list-row .badge { color: var(--text-mute); font-size: 10px; font-family: 'JetBrains Mono', ui-monospace, Consolas, monospace; }

.type-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 20px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  border-radius: var(--r-sm);
  border: 1px solid;
  font-family: 'JetBrains Mono', ui-monospace, Consolas, monospace;
}
.type-chip.bc  { background: var(--barcode);  border-color: var(--barcode-stroke); color: var(--barcode-ink); }
.type-chip.qr  { background: var(--qr);       border-color: var(--qr-stroke);      color: var(--qr-ink); }
.type-chip.txt { background: var(--text-fld); border-color: var(--text-stroke);    color: var(--text-ink); }

/* ============================================================ status bar */

.statusbar {
  display: flex;
  gap: 18px;
  padding: 6px 14px;
  background: var(--surface-1);
  border-top: 1px solid var(--border);
  font-family: 'JetBrains Mono', ui-monospace, Consolas, monospace;
  font-size: 11px;
  color: var(--text-mute);
  min-height: var(--statusbar-h);
  align-items: center;
}
.statusbar > span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#statusMsg { flex: 1; text-align: right; color: var(--text-dim); }

/* ============================================================ responsive */

/* tablet — sidebar narrower, toolbar may wrap */
@media (max-width: 1200px) {
  :root { --sidebar-w: 300px; }
}

/* small tablet — sidebar moves below canvas */
@media (max-width: 920px) {
  :root { --toolbar-h: auto; --sidebar-w: 100%; }

  .workspace {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr auto;
    overflow: auto;
  }
  .canvas-wrap {
    padding: 16px;
    min-height: 60vh;
  }
  .sidebar {
    border-left: 0;
    border-top: 1px solid var(--border);
    max-height: 50vh;
    overflow-y: auto;
  }
  .splitter { display: none; }
}

/* phone — compact toolbar, generous tap targets */
@media (max-width: 640px) {
  body { font-size: 12.5px; }

  .toolbar { padding: 6px 10px; gap: 6px 10px; }
  .tb-group { padding-right: 10px; }
  .tb-group + .tb-group::before { left: -6px; }
  .tb-group label { font-size: 11px; }

  .btn { min-height: 36px; padding: 0 10px; font-size: 12px; }
  select, input[type=text], input[type=number] { min-height: 36px; font-size: 13px; }
  input[type=checkbox] { width: 16px; height: 16px; }

  .canvas-wrap { padding: 10px; }
  .panel { padding: 12px; }
  .grid2 { gap: 8px; }

  /* hide visual separators between toolbar groups so wrapping looks clean */
  .tb-group + .tb-group::before { display: none; }

  /* Pager: enlarge for thumbs */
  .pager .btn { min-height: 36px; padding: 0 10px; }
  .pager input[type=number] { width: 56px; min-height: 36px; font-size: 13px; }

  /* field-box handles a bit bigger for fingers */
  .field-box .handle { width: 14px; height: 14px; }
  .field-box .h-nw { left: -8px; top:    -8px; }
  .field-box .h-ne { right:-8px; top:    -8px; }
  .field-box .h-sw { left: -8px; bottom: -8px; }
  .field-box .h-se { right:-8px; bottom: -8px; }

  .field-list-row { padding: 8px 10px; font-size: 13px; }
  .field-list { max-height: 320px; }

  .statusbar { font-size: 10.5px; padding: 6px 10px; gap: 10px; }
}

/* prefers-reduced-motion respect */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}