:root {
  --bg-app: #0f1115;
  --bg-panel: #16181d;
  --bg-panel-raised: #1c1f26;
  --border-subtle: #2a2d35;
  --border-strong: #3a3e48;
  --text-primary: #e8e9ec;
  --text-muted: #8b8f99;
  --text-faint: #5c6069;
  --accent: #5b8def;
  --accent-soft: rgba(91, 141, 239, 0.14);
  --accent-strong: #7ba3f5;
  --danger: #e15c5c;
  --success: #4fb477;
  --warning: #d9a441;
  --mono: 'JetBrains Mono', monospace;
  --sans: 'Inter', sans-serif;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg-app);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
}

.builder-shell { display: flex; flex-direction: column; height: 100vh; }

/* ── Topbar ─────────────────────────────────────────────────────────── */

.builder-topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 20px; background: var(--bg-panel); border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.brand-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), #8b6de0);
  display: flex; align-items: center; justify-content: center; font-size: 18px; color: white; flex-shrink: 0;
}

.brand-title { font-weight: 700; font-size: 14px; line-height: 1.2; letter-spacing: -0.01em; }
.brand-sub { font-size: 11.5px; color: var(--text-faint); line-height: 1.2; }

.builder-topbar .btn-outline-secondary { color: var(--text-muted); border-color: var(--border-strong); background: transparent; }
.builder-topbar .btn-outline-secondary:hover { background: var(--bg-panel-raised); color: var(--text-primary); border-color: var(--border-strong); }
.builder-topbar .btn-primary { background: var(--accent); border-color: var(--accent); font-weight: 600; }
.builder-topbar .btn-primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); }

/* ── Tabs de páginas ────────────────────────────────────────────────── */

.page-tabs {
  display: flex; align-items: center; gap: 4px;
  padding: 8px 16px; background: var(--bg-panel);
  border-bottom: 1px solid var(--border-subtle); flex-shrink: 0;
  overflow-x: auto;
}

.page-tab {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 12px 7px 14px; border-radius: 8px 8px 0 0;
  font-size: 12.5px; font-weight: 600; color: var(--text-muted);
  cursor: pointer; white-space: nowrap; border: 1px solid transparent; border-bottom: none;
  position: relative; top: 1px;
}
.page-tab:hover { color: var(--text-primary); background: var(--bg-panel-raised); }
.page-tab.active {
  color: var(--text-primary); background: var(--bg-app);
  border-color: var(--border-subtle);
}
.page-tab .schema-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }
.page-tab .tab-close {
  width: 16px; height: 16px; border-radius: 4px; display: flex; align-items: center; justify-content: center;
  color: var(--text-faint); font-size: 11px; margin-left: 2px;
}
.page-tab .tab-close:hover { background: rgba(225,92,92,0.25); color: #ff8f8f; }
.page-tab-add {
  width: 28px; height: 28px; border-radius: 7px; border: 1px dashed var(--border-strong);
  color: var(--text-faint); display: flex; align-items: center; justify-content: center; cursor: pointer;
  flex-shrink: 0; margin-left: 4px;
}
.page-tab-add:hover { border-color: var(--accent); color: var(--accent-strong); }

/* ── Layout body ────────────────────────────────────────────────────── */

.builder-body { flex: 1; display: grid; grid-template-columns: 250px 1fr 340px; overflow: hidden; min-height: 0; }

/* ── Paleta ─────────────────────────────────────────────────────────── */

.builder-palette { background: var(--bg-panel); border-right: 1px solid var(--border-subtle); padding: 16px 12px; overflow-y: auto; }

.palette-heading {
  font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-faint); padding: 4px 6px 8px;
}

.palette-list { display: flex; flex-direction: column; gap: 6px; margin-bottom: 6px; }

.palette-item {
  display: flex; align-items: center; gap: 10px; padding: 9px 10px;
  background: var(--bg-panel-raised); border: 1px solid var(--border-subtle); border-radius: var(--radius);
  cursor: grab; transition: border-color 0.12s ease, background 0.12s ease; user-select: none;
}
.palette-item:hover { border-color: var(--accent); background: var(--accent-soft); }
.palette-item:active { cursor: grabbing; transform: scale(0.98); }

.palette-item-icon {
  width: 28px; height: 28px; border-radius: 7px; display: flex; align-items: center; justify-content: center;
  font-size: 14px; flex-shrink: 0; background: var(--bg-app);
}

.palette-item-label { font-size: 12.5px; font-weight: 600; color: var(--text-primary); line-height: 1.2; }
.palette-item-desc { font-size: 10.5px; color: var(--text-faint); line-height: 1.2; }

.palette-hint { display: flex; gap: 8px; font-size: 11px; color: var(--text-faint); padding: 10px 6px 4px; line-height: 1.45; }
.palette-hint i { flex-shrink: 0; margin-top: 1px; }

.palette-header-editor {
  background: var(--bg-panel-raised); border: 1px solid var(--border-subtle); border-radius: 10px;
  padding: 10px; margin-bottom: 14px; cursor: pointer; transition: border-color 0.12s ease;
}
.palette-header-editor:hover { border-color: var(--accent); }
.palette-header-editor.selected { border-color: var(--accent); background: var(--accent-soft); }
.palette-header-editor-title { font-size: 11.5px; font-weight: 700; display: flex; align-items: center; gap: 6px; color: var(--text-primary); }
.palette-header-editor-desc { font-size: 10px; color: var(--text-faint); margin-top: 2px; }

/* ── Viewport 16:9 ──────────────────────────────────────────────────── */

.builder-viewport-wrap { background: #0c0d10; overflow: hidden; display: flex; flex-direction: column; }

.viewport-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 18px; border-bottom: 1px solid var(--border-subtle); flex-shrink: 0;
}
.viewport-toolbar-left { display: flex; align-items: center; gap: 8px; font-size: 11.5px; color: var(--text-faint); font-weight: 600; }
.viewport-toolbar-left i { font-size: 14px; }

.schema-type-badge {
  font-family: var(--mono); font-size: 10px; font-weight: 600;
  color: var(--accent-strong); background: var(--accent-soft);
  padding: 3px 9px; border-radius: 6px; text-transform: uppercase; letter-spacing: 0.03em;
}

.viewport-16-9 {
  flex: 1; display: flex; align-items: center; justify-content: center;
  padding: 20px; overflow: hidden; min-height: 0;
}

.viewport-scroll {
  width: 100%; height: 100%; max-width: 1500px;
  aspect-ratio: 16 / 9;
  background: #f8f9fb;
  border-radius: 10px;
  box-shadow: 0 0 0 1px var(--border-subtle), 0 24px 70px rgba(0,0,0,0.4);
  overflow-y: auto;
  overflow-x: hidden;
}

/* ── Bloques dentro del viewRoot (drag/select wrapper) ─────────────────── */

.canvas-block {
  position: relative;
  border-radius: 8px;
  transition: box-shadow 0.12s ease;
}
.canvas-block.selected { box-shadow: 0 0 0 2px var(--accent); }
.canvas-block.dragging { opacity: 0.4; }

.block-toolbar {
  position: absolute; top: -12px; right: 6px; display: flex; align-items: center; gap: 2px;
  background: #1c1f26; border-radius: 7px; padding: 3px; opacity: 0; transform: translateY(2px);
  transition: opacity 0.12s ease, transform 0.12s ease; z-index: 20; box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.canvas-block:hover .block-toolbar, .canvas-block.selected .block-toolbar { opacity: 1; transform: translateY(0); }
.block-toolbar button {
  width: 23px; height: 23px; border: none; background: transparent; color: #c4c8d0; border-radius: 5px;
  display: flex; align-items: center; justify-content: center; font-size: 12px; cursor: pointer;
}
.block-toolbar button:hover { background: rgba(255,255,255,0.1); color: #fff; }
.block-toolbar button.danger:hover { background: rgba(225,92,92,0.25); color: #ff8f8f; }
.block-toolbar .drag-handle { cursor: grab; }

.block-type-tag {
  position: absolute; top: -12px; left: 6px; background: #1c1f26; color: var(--accent-strong);
  font-family: var(--mono); font-size: 9px; font-weight: 600; padding: 2px 7px; border-radius: 6px;
  opacity: 0; transition: opacity 0.12s ease; z-index: 20; letter-spacing: 0.02em;
}
.canvas-block:hover .block-type-tag, .canvas-block.selected .block-type-tag { opacity: 1; }

.canvas-block.drop-indicator-before::before,
.canvas-block.drop-indicator-after::after {
  content: ''; position: absolute; left: 0; right: 0; height: 3px; background: var(--accent);
  border-radius: 2px; z-index: 21;
}
.canvas-block.drop-indicator-before::before { top: -6px; }
.canvas-block.drop-indicator-after::after { bottom: -6px; }

.canvas-dropzone-empty {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 50px 20px; color: #b7bcc4; text-align: center;
  border: 2px dashed #d8dce2; border-radius: 12px; margin-top: 10px;
}
.canvas-dropzone-empty i { font-size: 30px; margin-bottom: 8px; }
.canvas-dropzone-empty p { margin: 0; font-size: 12.5px; font-weight: 500; }
.viewport-scroll.drag-over .canvas-dropzone-empty { border-color: var(--accent); color: var(--accent); background: rgba(91,141,239,0.05); }

/* ── Inspector ──────────────────────────────────────────────────────── */

.builder-inspector { background: var(--bg-panel); border-left: 1px solid var(--border-subtle); overflow-y: auto; padding: 18px 16px; }

.inspector-empty {
  display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center;
  color: var(--text-faint); height: 100%; padding: 30px 10px;
}
.inspector-empty i { font-size: 26px; margin-bottom: 10px; }
.inspector-empty p { font-size: 12px; margin: 0; line-height: 1.5; }

.inspector-title { font-size: 13px; font-weight: 700; display: flex; align-items: center; gap: 8px; margin-bottom: 2px; }
.inspector-type-badge { font-family: var(--mono); font-size: 10px; color: var(--accent-strong); background: var(--accent-soft); padding: 2px 7px; border-radius: 5px; }

.inspector-section { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--border-subtle); }
.inspector-section-label { font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-faint); margin-bottom: 10px; }

.field-group { margin-bottom: 12px; }
.field-label { font-size: 11.5px; font-weight: 600; color: var(--text-muted); margin-bottom: 5px; display: flex; align-items: center; justify-content: space-between; }
.field-label .hint { font-weight: 400; color: var(--text-faint); font-size: 10px; }

.form-control-sm-dark, .form-select-sm-dark {
  width: 100%; background: var(--bg-panel-raised); border: 1px solid var(--border-strong); color: var(--text-primary);
  border-radius: 7px; padding: 6px 10px; font-size: 12.5px; font-family: var(--sans);
}
.form-control-sm-dark:focus, .form-select-sm-dark:focus { outline: none; border-color: var(--accent); }
textarea.form-control-sm-dark { resize: vertical; min-height: 50px; font-family: var(--mono); font-size: 11.5px; }

.field-check { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--text-muted); cursor: pointer; user-select: none; }
.field-check input { accent-color: var(--accent); width: 15px; height: 15px; }

.repeater-item { background: var(--bg-panel-raised); border: 1px solid var(--border-subtle); border-radius: 8px; padding: 10px; margin-bottom: 8px; position: relative; }
.repeater-item-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.repeater-item-label { font-size: 10.5px; font-weight: 700; color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.04em; }
.repeater-item-remove { background: none; border: none; color: var(--text-faint); cursor: pointer; font-size: 13px; padding: 2px; }
.repeater-item-remove:hover { color: var(--danger); }

.btn-add-repeater {
  width: 100%; background: transparent; border: 1px dashed var(--border-strong); color: var(--text-muted);
  border-radius: 8px; padding: 8px; font-size: 12px; font-weight: 600; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 6px;
}
.btn-add-repeater:hover { border-color: var(--accent); color: var(--accent-strong); background: var(--accent-soft); }

.toggle-row { display: flex; align-items: center; justify-content: space-between; padding: 8px 10px; background: var(--bg-panel-raised); border-radius: 8px; border: 1px solid var(--border-subtle); }
.toggle-row .field-label { margin-bottom: 0; }
.form-switch-dark { display: flex; align-items: center; }
.form-switch-dark input { accent-color: var(--accent); width: 32px; height: 18px; cursor: pointer; }

/* Selector de ícono con botón "elegir" que abre el modal */
.icon-field-row { display: flex; align-items: center; gap: 8px; }
.icon-field-preview {
  width: 32px; height: 32px; flex-shrink: 0; display: flex; align-items: center; justify-content: center;
  background: var(--bg-panel-raised); border: 1px solid var(--border-strong); border-radius: 7px; cursor: pointer;
}
.icon-field-preview:hover { border-color: var(--accent); }
.icon-field-preview i { font-size: 15px; color: var(--accent-strong); }

/* Selector de ancho de columna (grid Bootstrap) */
.col-width-selector { display: flex; gap: 4px; flex-wrap: wrap; }
.col-width-btn {
  flex: 1 1 auto; min-width: 38px; text-align: center; padding: 5px 4px; font-size: 10.5px; font-weight: 700;
  background: var(--bg-panel-raised); border: 1px solid var(--border-strong); color: var(--text-muted);
  border-radius: 6px; cursor: pointer;
}
.col-width-btn:hover { border-color: var(--accent); }
.col-width-btn.active { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-strong); }

/* ── Modal de exportación ──────────────────────────────────────────── */

.export-modal-backdrop, .icon-modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center;
  z-index: 1000; backdrop-filter: blur(2px);
}

.export-modal {
  background: var(--bg-panel); border: 1px solid var(--border-subtle); border-radius: 14px;
  width: min(720px, 92vw); max-height: 82vh; display: flex; flex-direction: column;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
}
.export-modal-header { display: flex; justify-content: space-between; align-items: flex-start; padding: 18px 20px 14px; border-bottom: 1px solid var(--border-subtle); }
.export-modal-title { font-weight: 700; font-size: 14.5px; display: flex; align-items: center; }
.export-modal-sub { font-size: 11.5px; color: var(--text-faint); margin-top: 4px; line-height: 1.5; }
.export-modal-sub code { color: var(--accent-strong); background: none; }
.export-modal-body { flex: 1; overflow: auto; padding: 0; }
.export-modal-body pre { margin: 0; padding: 18px 20px; font-family: var(--mono); font-size: 12px; line-height: 1.6; color: #cfe3ff; white-space: pre-wrap; word-break: break-word; }
.export-modal-footer { display: flex; justify-content: space-between; align-items: center; padding: 12px 20px; border-top: 1px solid var(--border-subtle); }

.btn-close { filter: invert(1) grayscale(1) opacity(0.7); }

/* ── Modal buscador de íconos ───────────────────────────────────────── */

.icon-modal {
  background: var(--bg-panel); border: 1px solid var(--border-subtle); border-radius: 14px;
  width: min(640px, 92vw); height: min(560px, 82vh); display: flex; flex-direction: column;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
}
.icon-modal-header { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--border-subtle); }
.icon-search-input {
  flex: 1; background: var(--bg-panel-raised); border: 1px solid var(--border-strong); color: var(--text-primary);
  border-radius: 8px; padding: 9px 12px; font-size: 13px;
}
.icon-search-input:focus { outline: none; border-color: var(--accent); }

.icon-modal-grid {
  flex: 1; overflow-y: auto; padding: 14px 16px;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(70px, 1fr)); gap: 6px;
  align-content: start;
}
.icon-grid-item {
  display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 10px 4px;
  border-radius: 8px; cursor: pointer; border: 1px solid transparent;
}
.icon-grid-item:hover { background: var(--bg-panel-raised); border-color: var(--border-strong); }
.icon-grid-item i { font-size: 18px; color: var(--text-primary); }
.icon-grid-item span { font-size: 8.5px; color: var(--text-faint); text-align: center; word-break: break-all; line-height: 1.2; }
.icon-grid-empty { grid-column: 1 / -1; text-align: center; color: var(--text-faint); font-size: 12px; padding: 30px; }

/* ── Scrollbars ─────────────────────────────────────────────────────── */

::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: #4a4e5a; }