/* ============================================
   Pandoc Converter — App Styles
   Extends pibico.css
   ============================================ */

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

/* --- 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);
}

/* --- Navbar icon button --- */
.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;
}

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

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

.action-btn-convert:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  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);
}

/* --- App layout --- */
.app-main {
  margin-top: 60px;
  margin-bottom: 44px;
  height: calc(100vh - 104px);
  padding: 12px;
  display: flex;
  flex-direction: column;
}

/* --- Conversion area --- */
.conversion-area {
  flex: 1;
  display: flex;
  gap: 16px;
  overflow: hidden;
}

/* --- Panels (Input/Output) --- */
.panel {
  flex: 1;
  background: var(--pibico-white);
  border-radius: var(--pibico-radius);
  box-shadow: var(--pibico-card-shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-header {
  padding: 10px 16px;
  background: var(--pibico-light-grey);
  border-bottom: 1px solid var(--pibico-light-grey);
  font-family: var(--pibico-font-heading);
  font-weight: 600;
  font-size: 0.82rem;
  color: var(--pibico-near-black);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.panel-body {
  flex: 1;
  padding: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.panel-body textarea {
  flex: 1;
  width: 100%;
  border: none;
  border-radius: var(--pibico-radius-sm);
  padding: 12px;
  font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
  font-size: 0.82rem;
  resize: none;
  background: var(--pibico-light-grey);
  color: var(--pibico-near-black);
  outline: none;
  transition: box-shadow 0.2s, background 0.2s;
}

.panel-body textarea:focus {
  box-shadow: 0 0 0 2px var(--pibico-steel-blue);
  background: var(--pibico-white);
}

/* --- Options 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;
}

/* --- Controls --- */
.control-group {
  margin-bottom: 10px;
}

.control-group label {
  display: block;
  margin-bottom: 4px;
  font-family: var(--pibico-font-heading);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--pibico-near-black);
}

.control-group select {
  width: 100%;
  padding: 6px 10px;
  background: var(--pibico-light-grey);
  border: none;
  border-radius: var(--pibico-radius-xs);
  color: var(--pibico-near-black);
  font-family: var(--pibico-font-body);
  font-size: 0.82rem;
  outline: none;
  transition: box-shadow 0.2s;
}

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

/* --- Mode toggle --- */
.mode-toggle {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}

.mode-btn {
  flex: 1;
  padding: 6px;
  background: var(--pibico-light-grey);
  border: none;
  border-radius: var(--pibico-radius-sm);
  color: var(--pibico-near-black);
  font-family: var(--pibico-font-button);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.mode-btn:hover {
  background: var(--pibico-steel-pale);
}

.mode-btn.active {
  background: var(--pibico-steel-blue);
  color: var(--pibico-white);
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(70, 130, 180, 0.3);
}

/* --- Checkboxes --- */
.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 10px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.checkbox-item input[type="checkbox"] {
  width: 15px;
  height: 15px;
  cursor: pointer;
  accent-color: var(--pibico-steel-blue);
}

.checkbox-item label {
  margin: 0;
  cursor: pointer;
  font-size: 0.78rem;
  color: var(--pibico-near-black);
}


/* --- File input area --- */
.file-input-area {
  flex: 1;
  border: 2px dashed var(--pibico-grey-mid);
  border-radius: var(--pibico-radius-sm);
  padding: 32px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--pibico-grey-dark);
}

.file-input-area:hover {
  border-color: var(--pibico-steel-blue);
  background: var(--pibico-steel-pale);
}

.file-input-area input[type="file"] {
  display: none;
}

.file-info {
  margin-top: 12px;
  padding: 8px 12px;
  background: var(--pibico-steel-pale);
  border-radius: var(--pibico-radius-xs);
  font-size: 0.82rem;
  color: var(--pibico-steel-dark);
}

/* --- Action buttons --- */
.panel-action-btn {
  padding: 5px 12px;
  background: var(--pibico-steel-blue);
  color: var(--pibico-white);
  border: none;
  border-radius: var(--pibico-radius-xs);
  font-family: var(--pibico-font-button);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

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

/* --- Toast --- */
.toast-notification {
  position: fixed;
  bottom: 48px;
  right: 24px;
  background: #10b981;
  color: white;
  padding: 10px 18px;
  border-radius: var(--pibico-radius-sm);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  display: none;
  align-items: center;
  gap: 8px;
  z-index: 3000;
  font-family: var(--pibico-font-body);
  font-size: 0.82rem;
  animation: slideIn 0.3s ease;
}

.toast-notification.error {
  background: var(--pibico-red-brick);
}

.toast-notification.active {
  display: flex;
}

@keyframes slideIn {
  from { transform: translateX(400px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* --- Spinner --- */
.spinner {
  width: 16px;
  height: 16px;
  border: 2px 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); }
}

/* --- SVG icons --- */
.icon {
  width: 16px;
  height: 16px;
  display: inline-block;
  vertical-align: middle;
}

.icon-lg {
  width: 48px;
  height: 48px;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .action-bar {
    left: 12px;
    right: 12px;
    top: auto;
    bottom: 44px;
    transform: none;
    flex-direction: row;
    justify-content: center;
  }

  .app-main {
    margin-bottom: 100px;
  }

  .conversion-area {
    flex-direction: column;
  }

  .panel {
    min-height: 250px;
  }
}