/* ============================================
   QR Code Generator — App Styles
   Extends pibico.css
   ============================================ */

/* --- Body background --- */
body {
  background: linear-gradient(135deg, #2c5171 0%, #4682b4 50%, #6a9bc3 100%);
  min-height: 100vh;
}

/* --- Navbar (floating card) --- */
.navbar {
  position: fixed;
  top: 8px;
  left: 12px;
  right: 12px;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1.5rem;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(255, 255, 255, 0.85);
  border-radius: var(--pibico-radius);
  box-shadow: var(--pibico-card-shadow);
}

.navbar-title {
  font-family: var(--pibico-font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  background: linear-gradient(135deg, #4682B4 0%, #365F8A 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.nav-link {
  font-family: var(--pibico-font-button);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--pibico-steel-blue);
  padding: 0.35rem 0.75rem;
  border-radius: var(--pibico-radius-sm);
  transition: all 0.2s ease;
}

.nav-link:hover {
  background: var(--pibico-steel-pale);
  color: var(--pibico-steel-dark);
}

/* --- Icon button (navbar cog) --- */
.btn-icon {
  width: 34px;
  height: 34px;
  border: none;
  border-radius: var(--pibico-radius-sm);
  background: var(--pibico-light-grey);
  color: var(--pibico-steel-blue);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.btn-icon:hover {
  background: var(--pibico-steel-pale);
  color: var(--pibico-steel-dark);
}

/* --- Footer (floating card) --- */
.app-footer {
  position: fixed;
  bottom: 8px;
  left: 12px;
  right: 12px;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.4rem 1.5rem;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(255, 255, 255, 0.85);
  border-radius: var(--pibico-radius);
  box-shadow: var(--pibico-card-shadow);
  font-family: var(--pibico-font-body);
  font-size: 0.75rem;
  color: var(--pibico-grey-dark);
}

.app-footer a {
  color: var(--pibico-steel-blue);
  font-weight: 500;
}

.footer-separator {
  color: var(--pibico-grey-mid);
  margin: 0 0.15rem;
}

/* --- Main content area (centered preview) --- */
.app-main {
  margin-top: 60px;
  margin-bottom: 44px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* --- Preview card (centered) --- */
.preview-card {
  max-width: 480px;
  width: 100%;
}

.preview-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem;
  min-height: 300px;
  justify-content: center;
}

.preview-placeholder {
  color: var(--pibico-grey-dark);
  text-align: center;
  font-size: 0.88rem;
}

.preview-placeholder svg {
  margin-bottom: 0.75rem;
  opacity: 0.4;
}

#qr-preview {
  max-width: 280px;
  border-radius: var(--pibico-radius-sm);
  box-shadow: var(--pibico-card-shadow);
}

.preview-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
  width: 100%;
  padding: 0 1.5rem 1.5rem;
}

.preview-actions .btn {
  flex: 1;
  font-size: 0.82rem;
  padding: 0.5rem;
}

/* --- Status bar --- */
.status-bar {
  padding: 0.5rem 1rem;
  border-radius: var(--pibico-radius-sm);
  font-size: 0.82rem;
  margin-bottom: 1rem;
  display: none;
  max-width: 480px;
  width: 100%;
}

.status-bar.show {
  display: block;
}

.status-bar.success {
  background: #ecfdf5;
  color: #065f46;
}

.status-bar.error {
  background: var(--pibico-brick-pale);
  color: var(--pibico-brick-dark);
}

/* --- Floating Action Bar --- */
.action-bar {
  position: fixed;
  left: 12px;
  top: calc(50% - 48px);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 8px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(255, 255, 255, 0.85);
  border-radius: var(--pibico-radius);
  box-shadow: var(--pibico-card-shadow);
  padding: 8px;
  cursor: grab;
  touch-action: none;
  user-select: none;
}

.action-bar.dragging {
  cursor: grabbing;
  box-shadow: var(--pibico-card-shadow-hover);
}

.action-btn {
  width: 40px;
  height: 40px;
  border: none;
  border-radius: var(--pibico-radius-sm);
  cursor: pointer !important;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.action-btn-generate {
  background: var(--pibico-red-brick);
  color: var(--pibico-white);
  box-shadow: 0 2px 8px rgba(179, 58, 43, 0.3);
}

.action-btn-generate:hover {
  background: var(--pibico-brick-dark);
  transform: translateY(-1px);
}

.action-btn-generate:disabled {
  opacity: 0.5;
  cursor: not-allowed !important;
  transform: none;
}

.action-btn-clear {
  background: var(--pibico-light-grey);
  color: var(--pibico-grey-dark);
}

.action-btn-clear:hover {
  background: var(--pibico-steel-pale);
  color: var(--pibico-steel-dark);
}

/* --- Panel sections --- */
.panel-section {
  margin-bottom: 16px;
}

.panel-section-title {
  font-family: var(--pibico-font-heading);
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--pibico-grey-dark);
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}

/* --- Tabs (inside panel) --- */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0.5rem;
  border-radius: var(--pibico-radius-sm);
  background: var(--pibico-light-grey);
  margin-bottom: 0.75rem;
}

.tab {
  padding: 0.4rem 0.75rem;
  border: none;
  background: none;
  border-radius: var(--pibico-radius-sm);
  cursor: pointer;
  font-family: var(--pibico-font-heading);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--pibico-grey-dark);
  transition: all 0.2s;
  white-space: nowrap;
}

.tab:hover {
  background: var(--pibico-white);
  color: var(--pibico-near-black);
}

.tab.active {
  background: var(--pibico-steel-blue);
  color: var(--pibico-white);
  box-shadow: 0 2px 6px rgba(70, 130, 180, 0.3);
}

/* --- Tab panels --- */
.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* --- Form groups --- */
.form-group {
  margin-bottom: 0.85rem;
}

.form-group label {
  display: block;
  font-family: var(--pibico-font-heading);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--pibico-near-black);
  margin-bottom: 0.25rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.5rem 0.7rem;
  border: none;
  border-radius: var(--pibico-radius-sm);
  background: var(--pibico-light-grey);
  font-family: var(--pibico-font-body);
  font-size: 0.88rem;
  color: var(--pibico-near-black);
  outline: none;
  transition: box-shadow 0.2s, background 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  box-shadow: 0 0 0 2px var(--pibico-steel-blue);
  background: var(--pibico-white);
}

.form-group textarea {
  resize: vertical;
  min-height: 65px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

/* --- Design section --- */
.design-section {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--pibico-light-grey);
}

.design-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-family: var(--pibico-font-heading);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--pibico-steel-blue);
  background: none;
  border: none;
  padding: 0.25rem 0;
}

.design-toggle svg {
  transition: transform 0.2s;
}

.design-toggle.open svg {
  transform: rotate(180deg);
}

.design-options {
  display: none;
  margin-top: 0.75rem;
}

.design-options.show {
  display: block;
}

.color-row {
  display: flex;
  gap: 0.75rem;
  align-items: flex-end;
  margin-bottom: 0.75rem;
}

.color-group {
  flex: 1;
}

.color-group label {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
  color: var(--pibico-grey-dark);
}

.color-input-wrap {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.color-input-wrap input[type="color"] {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: var(--pibico-radius-sm);
  padding: 2px;
  cursor: pointer;
  background: var(--pibico-light-grey);
}

.color-input-wrap input[type="text"] {
  flex: 1;
}

/* --- Buttons (app-specific overrides) --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border: none;
  border-radius: var(--pibico-radius-sm);
  font-family: var(--pibico-font-button);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  width: 100%;
}

.btn-primary {
  background: var(--pibico-red-brick);
  color: var(--pibico-white);
  box-shadow: 0 2px 8px rgba(179, 58, 43, 0.3);
}

.btn-primary:hover {
  background: var(--pibico-brick-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(179, 58, 43, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: var(--pibico-steel-blue);
  color: var(--pibico-white);
}

.btn-secondary:hover {
  background: var(--pibico-steel-dark);
}

/* --- Spinner --- */
.spinner {
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: inline-block;
}

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

/* --- Checkbox row --- */
.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.checkbox-row input[type="checkbox"] {
  width: auto;
}

.checkbox-row label {
  margin: 0;
  font-weight: 400;
}

/* --- Muted text --- */
.text-muted {
  font-size: 0.75rem;
  color: var(--pibico-grey-dark);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .app-main {
    padding: 1rem;
  }

  .preview-card {
    max-width: 100%;
  }

  .navbar {
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    left: 8px;
    right: 8px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .action-bar {
    flex-direction: row;
    left: 50%;
    top: auto;
    bottom: 52px;
    transform: translateX(-50%);
  }
}