/**
 * style.css
 * -----------------------------------------------------------------------
 * Desain: "digital workbench" — tema gelap untuk tool teknis (mirip
 * suasana editor/IDE), dengan aksen amber (kesan "lab/bengkel packing")
 * dan teal untuk elemen data/canvas. Tipografi: Space Grotesk (display),
 * Inter (UI/body), JetBrains Mono (angka & data teknis).
 * -----------------------------------------------------------------------
 */

:root {
  --bg-app: #12151a;
  --bg-panel: #1a1e25;
  --bg-panel-alt: #20252d;
  --bg-input: #14181e;
  --border-soft: #2a3038;
  --border-strong: #383f4a;

  --text-primary: #e8ebf1;
  --text-muted: #8b93a1;
  --text-dim: #5c6472;

  --accent: #e8a33d;
  --accent-strong: #f5b95a;
  --accent-contrast: #1a1206;

  --teal: #37c9b0;
  --danger: #ff6b6b;
  --danger-strong: #ff4d4d;

  --radius-md: 10px;
  --radius-sm: 6px;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.5;
  -webkit-tap-highlight-color: transparent;
}

button, input, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* ============================== HEADER ============================== */

.app-header {
  background: linear-gradient(180deg, #181c23 0%, #14171c 100%);
  border-bottom: 1px solid var(--border-soft);
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 12px; }

.brand-icon { width: 40px; height: 40px; flex-shrink: 0; }

.brand-title {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  margin: 0;
  letter-spacing: 0.5px;
  background: linear-gradient(90deg, var(--accent-strong), var(--teal));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.brand-subtitle {
  margin: 2px 0 0;
  font-size: 12.5px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.2px;
}

.brand-subtitle .dot { color: var(--accent); margin: 0 5px; }

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.credit-link {
  color: var(--text-muted);
  font-size: 12.5px;
  text-decoration: none;
  border-bottom: 1px dashed var(--border-strong);
  padding-bottom: 1px;
  transition: color .15s ease, border-color .15s ease;
  white-space: nowrap;
}
.credit-link:hover { color: var(--accent-strong); border-color: var(--accent-strong); }

.history-controls { display: flex; gap: 6px; }

/* ============================== BUTTONS ============================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 600;
  font-size: 13.5px;
  transition: transform .1s ease, filter .15s ease, background .15s ease;
  user-select: none;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: .4; cursor: not-allowed; transform: none; }

.btn-primary { background: var(--teal); color: #062420; }
.btn-primary:hover:not(:disabled) { filter: brightness(1.08); }

.btn-secondary { background: var(--bg-panel-alt); color: var(--text-primary); border-color: var(--border-strong); }
.btn-secondary:hover:not(:disabled) { border-color: var(--accent); }

.btn-accent { background: var(--accent); color: var(--accent-contrast); }
.btn-accent:hover:not(:disabled) { background: var(--accent-strong); }

.btn-ghost { background: transparent; color: var(--text-muted); border-color: var(--border-strong); }
.btn-ghost:hover:not(:disabled) { color: var(--text-primary); border-color: var(--text-muted); }

.btn-sm { padding: 6px 10px; font-size: 12.5px; }
.btn-xs { padding: 4px 8px; font-size: 11.5px; }
.btn-block { width: 100%; margin-top: 10px; }

.icon-btn {
  width: 30px; height: 30px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--bg-panel-alt);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
}
.icon-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent-strong); }
.icon-btn:disabled { opacity: .35; cursor: not-allowed; }
.icon-btn.ghost { background: transparent; }

/* ============================== LAYOUT ============================== */

.app-layout {
  max-width: 1400px;
  margin: 0 auto;
  padding: 18px 20px 60px;
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr) 320px;
  gap: 16px;
  align-items: start;
}

.col { display: flex; flex-direction: column; gap: 14px; min-width: 0; }

@media (max-width: 1080px) {
  .app-layout { grid-template-columns: 1fr; }
  .col-center { order: -1; }
}

/* ============================== PANELS ============================== */

.panel, .panel-static {
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.panel > summary {
  cursor: pointer;
  padding: 12px 16px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14.5px;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-panel-alt);
  border-bottom: 1px solid var(--border-soft);
  user-select: none;
}
.panel > summary::-webkit-details-marker { display: none; }
.panel > summary::after {
  content: '▾';
  color: var(--text-dim);
  transition: transform .15s ease;
}
.panel:not([open]) > summary::after { transform: rotate(-90deg); }

.panel-body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 12px; }

.panel.disabled-section { opacity: 1; }

/* ============================== DROPZONE / IMPORT ============================== */

.drop-zone {
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius-md);
  padding: 22px 14px;
  text-align: center;
  color: var(--text-muted);
  transition: border-color .15s ease, background .15s ease;
}
.drop-zone.dragover { border-color: var(--accent); background: rgba(232, 163, 61, 0.06); color: var(--text-primary); }
.drop-zone svg { color: var(--text-dim); margin-bottom: 6px; }
.drop-zone p { margin: 4px 0; font-size: 13px; }

.import-buttons { display: flex; gap: 8px; justify-content: center; margin-top: 10px; flex-wrap: wrap; }

.hint-text { font-size: 11.5px; color: var(--text-dim); margin: 4px 0 0; line-height: 1.5; }
.hint-text code { background: var(--bg-input); padding: 1px 5px; border-radius: 4px; font-family: var(--font-mono); }
.hint-text-inline { font-size: 11px; color: var(--text-dim); }

/* ============================== FRAME LIST ============================== */

.frame-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 340px;
  overflow-y: auto;
  padding-right: 2px;
}

.empty-hint {
  color: var(--text-dim);
  font-size: 12.5px;
  padding: 14px 4px;
  text-align: center;
}

.frame-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background: var(--bg-panel-alt);
}
.frame-item.selected { border-color: var(--teal); background: rgba(55, 201, 176, 0.08); }

.frame-check { accent-color: var(--teal); flex-shrink: 0; }

.frame-thumb {
  width: 40px; height: 40px;
  flex-shrink: 0;
  border-radius: 4px;
  background-image:
    linear-gradient(45deg, #2a2f38 25%, transparent 25%), linear-gradient(-45deg, #2a2f38 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #2a2f38 75%), linear-gradient(-45deg, transparent 75%, #2a2f38 75%);
  background-size: 10px 10px;
  background-position: 0 0, 0 5px, 5px -5px, -5px 0px;
  background-color: #1f242c;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.frame-thumb img { max-width: 100%; max-height: 100%; image-rendering: pixelated; }

.frame-info { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 1px; }
.frame-name { font-size: 12.5px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.frame-meta { font-size: 11px; color: var(--text-dim); font-family: var(--font-mono); }

.group-badge {
  display: inline-block;
  margin-top: 2px;
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 20px;
  background: rgba(232, 163, 61, 0.15);
  color: var(--accent-strong);
  width: fit-content;
}

.frame-del { flex-shrink: 0; width: 26px; height: 26px; color: var(--text-dim); }
.frame-del:hover { color: var(--danger-strong); border-color: var(--danger-strong); }

/* ============================== GROUPS ============================== */

.new-group-row { display: flex; gap: 8px; }
.new-group-row input {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  color: var(--text-primary);
}

.group-list { display: flex; flex-direction: column; gap: 6px; max-height: 160px; overflow-y: auto; }

.group-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-soft);
  background: var(--bg-panel-alt);
  cursor: pointer;
}
.group-item.active { border-color: var(--accent); background: rgba(232, 163, 61, 0.08); }
.group-name { font-weight: 600; font-size: 12.5px; flex-shrink: 0; }
.group-sub { font-size: 11px; color: var(--text-dim); flex: 1; font-family: var(--font-mono); }

.group-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.group-settings {
  margin-top: 6px;
  padding-top: 12px;
  border-top: 1px solid var(--border-soft);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.group-settings h4 { margin: 0 0 4px; font-family: var(--font-display); font-size: 13.5px; }
.group-settings.hidden { display: none; }

.radio-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.radio-row:hover { background: var(--bg-panel-alt); }
.radio-row input { margin-top: 2px; accent-color: var(--accent); flex-shrink: 0; }
.radio-row strong { color: var(--text-primary); }

.pivot-row.hidden { display: none; }
.pivot-presets { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; }
.pivot-custom { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 11.5px; color: var(--text-muted); }
.pivot-custom label { display: flex; align-items: center; gap: 6px; }
.pivot-custom input {
  width: 64px;
  background: var(--bg-input);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 5px 7px;
  font-family: var(--font-mono);
}

/* ============================== FIELDS / FORM ============================== */

.field-row { display: flex; flex-direction: column; gap: 5px; font-size: 12.5px; color: var(--text-muted); }
.field-row select,
.field-row input[type="number"],
.field-row input[type="text"] {
  background: var(--bg-input);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  color: var(--text-primary);
  font-family: var(--font-mono);
}
.field-row select:focus,
.field-row input:focus { outline: none; border-color: var(--accent); }

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--text-muted);
  cursor: pointer;
}
.checkbox-row input { accent-color: var(--accent); }

.format-group { display: flex; flex-direction: column; gap: 6px; padding: 10px; background: var(--bg-panel-alt); border-radius: var(--radius-sm); }
.format-label { font-size: 11.5px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 2px; }

#rotationRow.hidden { display: none; }

/* ============================== PREVIEW ============================== */

.panel-static { padding: 14px; display: flex; flex-direction: column; gap: 12px; position: sticky; top: 78px; }

.preview-toolbar {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.zoom-controls { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.zoom-controls span { font-family: var(--font-mono); font-size: 12px; color: var(--text-muted); min-width: 40px; text-align: center; }

.preview-canvas-wrap {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  overflow: auto;
  max-height: 60vh;
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  padding: 12px;
}

.checkerboard {
  background-image:
    linear-gradient(45deg, #2a2f38 25%, transparent 25%), linear-gradient(-45deg, #2a2f38 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #2a2f38 75%), linear-gradient(-45deg, transparent 75%, #2a2f38 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  background-color: #1f242c;
}

#previewCanvas {
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
  background: transparent;
  flex-shrink: 0;
}

.preview-info {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-dim);
  text-align: center;
}

/* ============================== TOAST ============================== */

.toast-box {
  position: fixed;
  top: 14px;
  right: 14px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 320px;
}

.toast {
  background: var(--bg-panel-alt);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--teal);
  color: var(--text-primary);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity .25s ease, transform .25s ease;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast-error { border-left-color: var(--danger-strong); }

/* ============================== FOOTER ============================== */

.app-footer {
  text-align: center;
  color: var(--text-dim);
  font-size: 11.5px;
  padding: 18px 20px 40px;
}

/* ============================== SCROLLBAR ============================== */

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }

/* ============================== RESPONSIVE / MOBILE (Android) ============================== */

@media (max-width: 600px) {
  .header-inner { padding: 10px 14px; }
  .brand-title { font-size: 21px; }
  .brand-subtitle { font-size: 10.5px; }
  .app-layout { padding: 12px 12px 40px; gap: 12px; }
  .panel-static { position: static; }
  .preview-canvas-wrap { max-height: 42vh; }
  .import-buttons { flex-direction: column; }
  .btn-block, .import-buttons .btn { width: 100%; }
  .credit-link { font-size: 11px; }
}