/* =============================================
   FormDocs – Estilos Principais
   ============================================= */

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

:root {
  --clr-bg:        #0f1117;
  --clr-surface:   #1a1d27;
  --clr-surface2:  #21253a;
  --clr-border:    #2e3350;
  --clr-primary:   #5b6ef5;
  --clr-primary-h: #7b8bff;
  --clr-accent:    #43d9ad;
  --clr-danger:    #f05d5d;
  --clr-warning:   #f5a623;
  --clr-text:      #e6e8f0;
  --clr-muted:     #8890b0;
  --clr-overlay:   rgba(0,0,0,0.6);
  --radius:        10px;
  --radius-lg:     16px;
  --shadow:        0 4px 24px rgba(0,0,0,0.4);
  --transition:    0.2s ease;
  --header-h:      60px;
}

html, body {
  height: 100%;
  font-family: 'Inter', sans-serif;
  background: var(--clr-bg);
  color: var(--clr-text);
  overflow: hidden;
}

/* =============================================
   HEADER
   ============================================= */
#app-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--clr-surface);
  border-bottom: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 1000;
  gap: 12px;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-icon {
  font-size: 1.4rem;
  color: var(--clr-primary);
}

.brand-name {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.3px;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.separator {
  width: 1px;
  height: 28px;
  background: var(--clr-border);
  margin: 0 4px;
}

/* =============================================
   BUTTONS
   ============================================= */
.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--clr-surface2);
  color: var(--clr-text);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  font-size: 0.78rem;
  font-weight: 500;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform 0.1s;
  white-space: nowrap;
}

.tool-btn:hover {
  background: var(--clr-primary);
  border-color: var(--clr-primary);
  color: #fff;
}

.tool-btn:active { transform: scale(0.96); }

.tool-btn.active {
  background: var(--clr-primary);
  border-color: var(--clr-primary-h);
  color: #fff;
}

.nav-btn {
  padding: 6px 10px;
}

.nav-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.accent-btn {
  background: rgba(67,217,173,0.15);
  border-color: var(--clr-accent);
  color: var(--clr-accent);
}

.accent-btn:hover {
  background: var(--clr-accent);
  color: #0f1117;
}

.export-btn {
  background: rgba(91,110,245,0.15);
  border-color: var(--clr-primary);
  color: var(--clr-primary);
}

.export-btn:hover {
  background: var(--clr-primary);
  color: #fff;
}

.danger-btn {
  background: rgba(240,93,93,0.12);
  border-color: var(--clr-danger);
  color: var(--clr-danger);
}

.danger-btn:hover {
  background: var(--clr-danger);
  color: #fff;
}

.page-indicator {
  font-size: 0.78rem;
  color: var(--clr-muted);
  padding: 0 4px;
  min-width: 48px;
  text-align: center;
}

/* =============================================
   MAIN / LAYOUT
   ============================================= */
#app-main {
  margin-top: var(--header-h);
  height: calc(100vh - var(--header-h));
  overflow: hidden;
}

/* =============================================
   UPLOAD ZONE
   ============================================= */
.upload-zone {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: radial-gradient(ellipse at center, #1a1e30 0%, #0f1117 70%);
}

.upload-card {
  background: var(--clr-surface);
  border: 2px dashed var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 60px 48px;
  max-width: 520px;
  width: 90%;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition);
  position: relative;
  z-index: 1;
}

.upload-card:hover,
.upload-zone.dragging .upload-card {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 4px rgba(91,110,245,0.12), var(--shadow);
}

.upload-icon-wrap {
  width: 80px; height: 80px;
  background: rgba(91,110,245,0.12);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 24px;
  font-size: 2.2rem;
  color: var(--clr-primary);
}

.upload-card h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.upload-card p {
  color: var(--clr-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 24px;
}

.upload-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--clr-primary);
  color: #fff;
  padding: 10px 24px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
  margin-bottom: 16px;
}

.upload-label:hover { background: var(--clr-primary-h); }

.upload-hint {
  font-size: 0.75rem;
  color: var(--clr-muted);
  margin-bottom: 0 !important;
}

.drop-overlay {
  position: absolute;
  inset: 0;
  background: rgba(91,110,245,0.18);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  color: var(--clr-primary);
  gap: 16px;
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.upload-zone.dragging .drop-overlay { opacity: 1; pointer-events: all; }

/* =============================================
   EDITOR AREA
   ============================================= */
.editor-area {
  height: 100%;
  display: flex;
  position: relative;
  overflow: hidden;
}

.canvas-scroll {
  flex: 1;
  overflow-y: auto;
  overflow-x: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: #0d1020;
}

/* Custom scrollbar */
.canvas-scroll::-webkit-scrollbar { width: 8px; height: 8px; }
.canvas-scroll::-webkit-scrollbar-track { background: transparent; }
.canvas-scroll::-webkit-scrollbar-thumb { background: var(--clr-border); border-radius: 4px; }
.canvas-scroll::-webkit-scrollbar-thumb:hover { background: var(--clr-primary); }

.pages-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
}

/* =============================================
   PAGE WRAPPER
   ============================================= */
.page-wrapper {
  position: relative;
  box-shadow: 0 8px 40px rgba(0,0,0,0.6);
  border-radius: 4px;
  overflow: visible;
  cursor: crosshair;
  background: #fff;
  flex-shrink: 0;
}

.page-wrapper canvas {
  display: block;
  border-radius: 4px;
}

.page-wrapper img {
  display: block;
  max-width: 100%;
  border-radius: 4px;
}

/* =============================================
   FORM FIELDS
   ============================================= */
.form-field {
  position: absolute;
  cursor: move;
  user-select: none;
  z-index: 10;
}

.form-field .field-inner {
  position: relative;
  width: 100%;
  height: 100%;
  border: 2px dashed rgba(91,110,245,0.6);
  border-radius: 4px;
  background: rgba(91,110,245,0.08);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-field.selected .field-inner {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(91,110,245,0.25);
}

.form-field .field-inner input[type="text"],
.form-field .field-inner input[type="email"],
.form-field .field-inner input[type="date"],
.form-field .field-inner input[type="number"],
.form-field .field-inner textarea,
.form-field .field-inner select {
  width: 100%;
  height: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: #111;
  font-family: 'Inter', sans-serif;
  font-size: inherit;
  padding: 4px 6px;
  resize: none;
}

.form-field .field-inner select {
  background: rgba(255,255,255,0.9);
}

.form-field .field-inner .checkbox-wrap,
.form-field .field-inner .radio-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 6px;
  height: 100%;
  color: #111;
  font-size: inherit;
}

.form-field .field-inner .checkbox-wrap input,
.form-field .field-inner .radio-wrap input {
  width: 16px;
  height: 16px;
  accent-color: var(--clr-primary);
  cursor: pointer;
  flex-shrink: 0;
}

.form-field .field-label {
  position: absolute;
  top: -20px;
  left: 0;
  font-size: 0.65rem;
  background: var(--clr-primary);
  color: #fff;
  padding: 1px 6px;
  border-radius: 3px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
}

.form-field:hover .field-label,
.form-field.selected .field-label { opacity: 1; }

/* Resize handle */
.form-field .resize-handle {
  position: absolute;
  bottom: -5px;
  right: -5px;
  width: 12px;
  height: 12px;
  background: var(--clr-primary);
  border: 2px solid #fff;
  border-radius: 50%;
  cursor: se-resize;
  z-index: 20;
  opacity: 0;
  transition: opacity 0.15s;
}

.form-field:hover .resize-handle,
.form-field.selected .resize-handle { opacity: 1; }

/* Signature field */
.sig-field-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* =============================================
   PROPERTIES PANEL
   ============================================= */
.props-panel {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 270px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  z-index: 500;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: slideIn 0.2s ease;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

.props-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--clr-border);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--clr-primary);
}

.props-header button {
  background: none;
  border: none;
  color: var(--clr-muted);
  cursor: pointer;
  font-size: 1rem;
  transition: color var(--transition);
}

.props-header button:hover { color: var(--clr-danger); }

.props-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow-y: auto;
  max-height: 420px;
}

.props-body::-webkit-scrollbar { width: 4px; }
.props-body::-webkit-scrollbar-thumb { background: var(--clr-border); border-radius: 2px; }

.prop-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.prop-group label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--clr-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.prop-group input[type="text"],
.prop-group input[type="number"],
.prop-group input[type="color"],
.prop-group select,
.prop-group textarea {
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border);
  border-radius: 6px;
  color: var(--clr-text);
  font-family: 'Inter', sans-serif;
  font-size: 0.82rem;
  padding: 7px 10px;
  width: 100%;
  transition: border-color var(--transition);
}

.prop-group input:focus,
.prop-group select:focus,
.prop-group textarea:focus {
  outline: none;
  border-color: var(--clr-primary);
}

.prop-group input[type="color"] {
  padding: 3px;
  height: 36px;
  cursor: pointer;
}

.prop-group textarea { resize: vertical; min-height: 60px; }

.prop-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.props-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--clr-border);
  display: flex;
  justify-content: flex-end;
}

.props-footer .danger-btn {
  font-size: 0.78rem;
  padding: 6px 14px;
}

/* =============================================
   MODAL
   ============================================= */
.modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: var(--clr-overlay);
  backdrop-filter: blur(3px);
}

.modal-box {
  position: relative;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  max-width: 90vw;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: fadeUp 0.2s ease;
  min-width: 340px;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--clr-border);
  font-weight: 600;
  font-size: 0.95rem;
}

.modal-header i { color: var(--clr-primary); margin-right: 8px; }

.modal-header button {
  background: none;
  border: none;
  color: var(--clr-muted);
  cursor: pointer;
  font-size: 1.1rem;
  transition: color var(--transition);
}

.modal-header button:hover { color: var(--clr-danger); }

.modal-body {
  padding: 20px;
  overflow: auto;
  flex: 1;
}

/* Preview modal */
#preview-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}

#preview-body canvas {
  max-width: 100%;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
  border-radius: 4px;
}

/* Signature modal */
.sig-box {
  min-width: 560px;
}

#sig-canvas {
  display: block;
  background: #fff;
  border: 2px solid var(--clr-border);
  border-radius: var(--radius);
  cursor: crosshair;
  width: 100%;
  max-width: 500px;
}

.sig-controls {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 12px;
}

/* =============================================
   TOAST
   ============================================= */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 9999;
}

.toast {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 12px 18px;
  font-size: 0.83rem;
  color: var(--clr-text);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: toastIn 0.3s ease;
  max-width: 320px;
}

.toast.success { border-left: 4px solid var(--clr-accent); }
.toast.error   { border-left: 4px solid var(--clr-danger); }
.toast.info    { border-left: 4px solid var(--clr-primary); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
  to { opacity: 0; transform: translateX(30px); }
}

.toast.removing { animation: toastOut 0.3s ease forwards; }

/* =============================================
   LOADING SPINNER
   ============================================= */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 3000;
  gap: 16px;
}

.spinner {
  width: 44px; height: 44px;
  border: 4px solid var(--clr-border);
  border-top-color: var(--clr-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

.loading-overlay p {
  color: var(--clr-muted);
  font-size: 0.9rem;
}

/* =============================================
   RESPONSIVO
   ============================================= */
@media (max-width: 768px) {
  .tool-btn span { display: none; }
  .tool-btn { padding: 6px 9px; }
  .separator { margin: 0 2px; }
  .props-panel { width: calc(100vw - 32px); right: 16px; }
  .sig-box { min-width: unset; width: 96vw; }
  .canvas-scroll { padding: 12px; }
}