:root {
  --bg: #0f1115;
  --sidebar-bg: #141820;
  --card: #1a1f2b;
  --border: #2a2e38;
  --text: #e7e9ee;
  --muted: #9aa1ac;
  --accent: #6c8cff;
  --accent-dim: #354160;
  --ok: #4ade80;
  --err: #f87171;
  --radius: 10px;
  --sidebar-width: 450px;
  --topbar-height: 56px;
}

* { 
  box-sizing: border-box; 
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  height: 100vh;
  overflow: hidden;
}

/* ========== TOP NAVBAR ========== */
.topbar {
  height: var(--topbar-height);
  min-height: var(--topbar-height);
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 0 20px;
  background: #12616b;
  color: #fff !important;
  border-bottom: 1px solid var(--border);
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.topbar-logo {
  font-size: 1.2rem;
  line-height: 1;
}

.topbar-brand h1 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* App Container - Sidebar + Main */
.app-container {
  display: flex;
  height: calc(100vh - var(--topbar-height));
  overflow: hidden;
}
/* Dropdown কন্টেইনার */
.tab-dropdown {
  position: relative;
  display: inline-block;
}

.more-btn {
  cursor: pointer;
  transition: all 0.2s;
}

.more-btn:hover {
  background: #e8f0fe;
  color: #1a73e8;
}

/* ============================================================
   Dropdown Menu (আরও টুল)
   ============================================================ */
.tab-dropdown {
  position: relative;
  display: inline-block;
}

.more-btn {
  cursor: pointer;
  background: transparent;
  border: none;
  color: #cdd6f4;
  font-size: 0.9rem;
  padding: 8px 16px;
  border-radius: 6px;
  transition: background 0.2s;
}

.more-btn:hover {
  background: rgba(137, 180, 250, 0.1);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 270px;
  background: #1e1e2e;
  border: 1px solid #313244;
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
  display: none;
  z-index: 1000;
  padding: 6px 0;
  margin-top: 4px;
}

.dropdown-menu .dropdown-tab-btn {
  display: block;
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  color: #cdd6f4;
  font-size: 0.9rem;
  padding: 10px 18px;
  cursor: pointer;
  transition: background 0.15s;
  font-family: inherit;
  border-radius: 0;
}

.dropdown-menu .dropdown-tab-btn:hover {
  background: rgba(137, 180, 250, 0.12);
  color: #89b4fa;
}

.dropdown-menu .dropdown-tab-btn.active {
  background: rgba(137, 180, 250, 0.15);
  color: #89b4fa;
}

.dropdown-menu .dropdown-tab-btn:first-child {
  border-radius: 8px 8px 0 0;
}

.dropdown-menu .dropdown-tab-btn:last-child {
  border-radius: 0 0 8px 8px;
}

/* Responsive: smaller screens */
@media (max-width: 768px) {
  .dropdown-menu {
    right: -10px;
    min-width: 180px;
  }
}
/* ========== SIDEBAR ========== */
.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  height: 100%;
}

.sidebar-header {
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.sidebar-header h1 {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sidebar-header .subtitle {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 2px;
  -webkit-text-fill-color: var(--muted);
}

/* ========== TAB NAVIGATION (now hosted in the top navbar) ========== */
.tab-nav {
  display: flex;
  gap: 4px;
  height: 100%;
}

.tab-btn {
  flex: 0 0 auto;
  background: transparent;
  border: none;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0 14px;
  height: 100%;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text);
  background: var(--card);
}

.tab-btn.active {
  color: var(--text);
  border-bottom-color: var(--accent);
  background: linear-gradient(180deg, var(--accent-dim), transparent);
}

.tab-pane[hidden] {
  display: none;
}

/* Controls */
.controls {
  flex: 0 0 auto;
}

.control-group {
  margin-bottom: 16px;
}

.control-group label {
  display: block;
  font-weight: 600;
  font-size: 0.82rem;
  margin-bottom: 5px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.control-group input[type="file"],
.control-group select,
.control-group textarea {
  width: 100%;
  background: #0b0e14;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 0.9rem;
  font-family: inherit;
}

.control-group textarea {
  resize: vertical;
  line-height: 1.4;
  font-family: 'JetBrains Mono', 'Consolas', monospace;
  font-size: 0.8rem;
}

.control-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(108, 140, 255, 0.1);
}

#verify-card {
  border-top: 1px solid var(--border);
  margin-top: 20px;
  padding-top: 20px;
}

.control-group input[type="file"] {
  padding: 7px 12px;
  cursor: pointer;
}

.control-group input[type="file"]::file-selector-button {
  background: var(--accent);
  color: #0b0d12;
  border: none;
  border-radius: 6px;
  padding: 5px 14px;
  margin-right: 12px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.8rem;
}

.control-group input[type="file"]::file-selector-button:hover {
  filter: brightness(1.1);
}

.control-group select {
  cursor: pointer;
  appearance: auto;
}

.control-group select option {
  background: #0b0e14;
  color: var(--text);
}

.control-group input:focus,
.control-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(108, 140, 255, 0.1);
}

#start-btn {
  width: 100%;
  background: var(--accent);
  color: #0b0d12;
  border: none;
  border-radius: 8px;
  padding: 11px 20px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s;
  margin-top: 8px;
}

#start-btn:hover { 
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(108, 140, 255, 0.3);
}

#start-btn:disabled { 
  opacity: 0.5; 
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Progress in sidebar */
#progress-card {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  flex: 1;
  overflow-y: auto;
  height: 150px !important;
}

#progress-card h3 {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 10px;
}

.progress-bar-track {
  height: 6px;
  border-radius: 3px;
  background: #0b0e14;
  border: 1px solid var(--border);
  overflow: hidden;
  margin-bottom: 8px;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), #a78bfa);
  transition: width 0.3s ease;
  border-radius: 3px;
}

.progress-label {
  color: var(--muted);
  font-size: 0.8rem;
  margin-bottom: 10px;
}

.chunk-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.chunk-list li {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  padding: 6px 10px;
  border-radius: 6px;
  background: #0b0e14;
  border: 1px solid var(--border);
  transition: all 0.2s;
}

.chunk-list li .status { 
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 500;
}

.chunk-list li.done .status { 
  color: var(--ok); 
}

.chunk-list li.error .status { 
  color: var(--err); 
}

.chunk-list li.working {
  border-color: var(--accent);
  background: rgba(108, 140, 255, 0.08);
  animation: pulse-border 1.5s ease-in-out infinite;
}

@keyframes pulse-border {
  0%, 100% { border-color: var(--accent); }
  50% { border-color: rgba(108, 140, 255, 0.3); }
}

.copy-btn, .download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.9rem 1rem;

  /* typography */
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: #ffffff;

  /* background – subtle glass effect */
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.10) 0%, rgba(255, 255, 255, 0.02) 100%);
  background-color: #2a313e;

  /* border – soft glow on dark */
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 10px;

  /* shadows – depth + inner highlight */
  box-shadow: 
    0 8px 18px rgba(0, 0, 0, 0.6),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);

  /* transition for hover/active */
  transition: all 0.25s ease;

  /* cursor */
  cursor: pointer;
}

/* ===== Hover state – brighter, lifted ===== */
.download-btn:hover {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.16) 0%, rgba(255, 255, 255, 0.04) 100%);
  background-color: #3a4354;
  border-color: rgba(255, 255, 255, 0.35);
  box-shadow: 
    0 12px 28px rgba(0, 0, 0, 0.7),
    inset 0 1px 0 rgba(255, 255, 255, 0.20);
  transform: translateY(-2px);
}

/* ===== Active / click state ===== */
.download-btn:active {
  transform: translateY(0px) scale(0.98);
  box-shadow: 
    0 4px 12px rgba(0, 0, 0, 0.7),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  background-color: #1f2630;
}

/* ===== Optional: icon inside button (if you use <i> or <svg>) ===== */
.download-btn svg,
.download-btn i {
  flex-shrink: 0;
  width: 1.2em;
  height: 1.2em;
  fill: currentColor;
  stroke: currentColor;
  stroke-width: 0;
  transition: transform 0.2s ease;
}

.download-btn:hover svg,
.download-btn:hover i {
  transform: translateY(1px);
}

/* ===== Focus-visible for accessibility ===== */
.download-btn:focus-visible {
  outline: 2px solid #6c8cff;
  outline-offset: 3px;
  border-color: rgba(255, 255, 255, 0.6);
}
/* ========== MAIN CONTENT ========== */
.main-content {
  flex: 1;
  padding: 32px 40px;
  overflow-y: auto;
  height: 100%;
  background: var(--bg);
  display: flex;
  flex-direction: column;
}

/* Empty State - Perfectly Centered */
.empty-state {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.empty-state-content {
  text-align: center;
  max-width: 480px;
  height: 95%;
}

.empty-state-content svg {
  margin-bottom: 0px;
  opacity: 0.5;
  width: 60px;
  height: 60px;
}

.empty-state-content h2 {
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
  letter-spacing: -0.5px;
}

.empty-state-content p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 4px;
}

.empty-state-content .hint-text {
  font-size: 0.9rem;
  margin-top: 8px;
  color: var(--muted);
  opacity: 0.6;
}

/* Results */
#results-card {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100%;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-shrink: 0;
}

.results-header h2 {
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.3px;
}

#download-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 7px 18px;
  border-radius: 8px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 500;
}

#download-btn:hover {
  background: var(--border);
  border-color: var(--accent);
}

.results-output {
  flex: 1;
  background: #0b0e14;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  font-size: 0.8rem;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, 'Cascadia Code', 'Roboto Mono', monospace;
  line-height: 1.6;
  min-height: 300px;
}

/* Error */
.error-card {
  background: rgba(248, 113, 113, 0.05);
  border: 1px solid var(--err);
  border-radius: 8px;
  padding: 20px;
  margin-top: 20px;
  animation: shake 0.5s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-10px); }
  40% { transform: translateX(10px); }
  60% { transform: translateX(-5px); }
  80% { transform: translateX(5px); }
}

.error-card h2 {
  color: var(--err);
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.error-card pre {
  background: rgba(248, 113, 113, 0.05);
  color: var(--err);
  padding: 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--muted);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .topbar {
    padding: 0 12px;
    gap: 14px;
  }

  .topbar-brand h1 {
    font-size: 1rem;
  }

  .tab-nav {
    overflow-x: auto;
  }

  .tab-btn {
    padding: 0 10px;
    font-size: 0.78rem;
  }

  .app-container {
    flex-direction: column;
    height: calc(100vh - var(--topbar-height));
  }

  .sidebar {
    width: 100%;
    min-width: 100%;
    height: auto;
    max-height: 50vh;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 16px;
  }

  .main-content {
    padding: 16px;
    height: auto;
    flex: 1;
  }

  .empty-state-content {
    padding: 20px;
  }

  .empty-state-content h2 {
    font-size: 1.4rem;
  }

  .empty-state-content svg {
    width: 56px;
    height: 56px;
  }

  .results-output {
    min-height: 200px;
    font-size: 0.75rem;
    padding: 14px;
  }
}

@media (max-width: 480px) {
  .sidebar {
    padding: 12px;
    max-height: 45vh;
  }

  .main-content {
    padding: 12px;
  }

  .sidebar-header h1 {
    font-size: 1.2rem;
  }

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

  .control-group label {
    font-size: 0.75rem;
  }

  .results-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .results-header h2 {
    font-size: 1.1rem;
  }

  #download-btn {
    width: 100%;
    text-align: center;
  }
}


/* ========== RESULTS ACTIONS ========== */
.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-shrink: 0;
  flex-wrap: wrap;
  gap: 12px;
}

.results-header h2 {
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.3px;
  margin: 0;
}

.results-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

#download-btn,
#copy-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 7px 18px;
  border-radius: 8px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

#download-btn:hover,
#copy-btn:hover {
  background: var(--border);
  border-color: var(--accent);
}

#copy-btn.copied {
  border-color: var(--ok);
  color: var(--ok);
  background: rgba(74, 222, 128, 0.1);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  
  .results-header {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  
  .results-actions {
    width: 100%;
    gap: 8px;
  }
  
  #download-btn,
  #copy-btn {
    flex: 1;
    justify-content: center;
    padding: 8px 12px;
    font-size: 0.8rem;
  }
}


/* Add this to your existing CSS */
.hint {
  display: block;
  font-weight: 400;
  color: var(--muted);
  font-size: 0.75rem;
  margin-top: 3px;
  opacity: 0.7;
}

.control-group select {
  width: 100%;
  background: #0b0e14;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 0.9rem;
  font-family: inherit;
  cursor: pointer;
}

.control-group select option {
  background: #0b0e14;
  color: var(--text);
}

.control-group select option:disabled {
  color: var(--muted);
  opacity: 0.5;
}

/* Download notification */
.download-notification {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #1e293b;
    color: #e2e8f0;
    padding: 12px 20px;
    border-radius: 8px;
    border-left: 4px solid #4ade80;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1000;
    animation: slideIn 0.3s ease-out;
}

.download-notification button {
    background: none;
    border: none;
    color: #94a3b8;
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0 4px;
}

.download-notification button:hover {
    color: #e2e8f0;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.result-block {
  margin-bottom: 1.5rem;
  border: 1px solid #333;
  border-radius: 8px;
  padding: 1rem;
}
.result-block-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}


/* ========== EXTRACT BUTTONS ========== */
.button-row {
  display: flex;
  gap: 10px;
  margin-top: 8px;
}

#extract-all-btn,
#extract-selected-btn {
  flex: 1;
  background: var(--accent);
  color: #0b0d12;
  border: none;
  border-radius: 8px;
  padding: 11px 14px;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}

#extract-all-btn:hover:not(:disabled),
#extract-selected-btn:hover:not(:disabled) {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(108, 140, 255, 0.3);
}

#extract-selected-btn {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
}

#extract-selected-btn:hover:not(:disabled) {
  background: var(--accent-dim);
  box-shadow: none;
}

#extract-all-btn:disabled,
#extract-selected-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* ========== FILE LIST STATUS STATES ========== */
.file-list {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.file-list-item {
  font-size: 0.82rem;
  padding: 6px 10px;
  border-radius: 6px;
  background: #0b0e14;
  border: 1px solid var(--border);
  color: var(--muted);
  transition: all 0.2s;
}

.file-list-item.working {
  border-color: var(--accent);
  background: rgba(108, 140, 255, 0.08);
  color: var(--text);
  animation: pulse-border 1.5s ease-in-out infinite;
}

.file-list-item.done {
  border-color: var(--ok);
  color: var(--ok);
}

.file-list-item.error {
  border-color: var(--err);
  color: var(--err);
}

/* ========== CHUNKS CARD ========== */
#chunks-card {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}

.chunks-header {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
}

.chunks-header h3 {
  font-size: 0.85rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.chunk-select-actions {
  display: flex;
  gap: 6px;
}

.chunk-select-actions button {
  flex: 1;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 6px;
  padding: 5px 8px;
  font-size: 0.72rem;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 500;
}

.chunk-select-actions button:hover {
  border-color: var(--accent);
  color: var(--text);
  background: var(--accent-dim);
}

.chunk-file-section {
  margin-bottom: 16px;
}

.chunk-file-section h4 {
  font-size: 0.78rem;
  color: var(--text);
  font-weight: 600;
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--border);
  word-break: break-word;
}

/* ========== CHUNK LIST (with checkboxes) ========== */
.chunk-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.chunk-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  padding: 6px 10px;
  border-radius: 6px;
  background: #0b0e14;
  border: 1px solid var(--border);
  transition: all 0.2s;
}

.chunk-list li input[type="checkbox"] {
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  accent-color: var(--accent);
  cursor: pointer;
}

.chunk-list li span:nth-of-type(1) {
  flex: 1;
  color: var(--text);
}

.chunk-list li .status {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 500;
  text-align: right;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 45%;
}

.chunk-list li.pending .status {
  color: var(--muted);
}

.chunk-list li.done {
  border-color: var(--ok);
}

.chunk-list li.done .status {
  color: var(--ok);
}

.chunk-list li.error {
  border-color: var(--err);
}

.chunk-list li.error .status {
  color: var(--err);
}

.chunk-list li.working {
  border-color: var(--accent);
  background: rgba(108, 140, 255, 0.08);
  animation: pulse-border 1.5s ease-in-out infinite;
}

.chunk-list li.working .status {
  color: var(--accent);
}

/* ========== SIMPLIFIED EMPTY STATE ========== */
.empty-state {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.empty-state p {
  color: var(--muted);
  font-size: 1rem;
  max-width: 420px;
  line-height: 1.6;
}

/* ========== RESPONSIVE ADDITIONS ========== */
@media (max-width: 768px) {
  .button-row {
    flex-direction: column;
  }

  .chunk-select-actions {
    flex-wrap: wrap;
  }

  .chunk-select-actions button {
    flex: 1 1 30%;
  }

  .chunk-list li .status {
    max-width: 55%;
  }
}

/* Log Panel */
.log-card {
    background: #1e1e2e;
    border-radius: 8px;
    border: 1px solid #2d2d44;
    margin-bottom: 20px;
    overflow: hidden;
}

.log-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: #2d2d44;
    border-bottom: 1px solid #3d3d5a;
}

.log-header h2 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: #cdd6f4;
}

.clear-log-btn {
    background: transparent;
    border: 1px solid #45456a;
    color: #a6adc8;
    padding: 4px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s;
}

.clear-log-btn:hover {
    background: #3d3d5a;
    color: #cdd6f4;
}

.log-output {
    padding: 10px 20px;
    max-height: 300px;
    overflow-y: auto;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 13px;
    line-height: 1.6;
    background: #1a1a2e;
}

.log-output::-webkit-scrollbar {
    width: 6px;
}

.log-output::-webkit-scrollbar-track {
    background: #1a1a2e;
}

.log-output::-webkit-scrollbar-thumb {
    background: #3d3d5a;
    border-radius: 3px;
}

.log-output::-webkit-scrollbar-thumb:hover {
    background: #4d4d6a;
}

.log-entry {
    padding: 2px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.log-entry:last-child {
    border-bottom: none;
}

.log-info {
    color: #89b4fa;
}

.log-success {
    color: #a6e3a1;
}

.log-warning {
    color: #f9e2af;
}

.log-error {
    color: #f38ba8;
}

/* Results note */
.results-note {
    color: #a6adc8;
    font-size: 13px;
    margin: 0;
}

.results-note code {
    background: #2d2d44;
    padding: 2px 8px;
    border-radius: 4px;
    color: #89b4fa;
    font-size: 12px;
}

/* Results Card */
.results-card {
    background: #1e1e2e;
    border-radius: 8px;
    border: 1px solid #2d2d44;
    margin-top: 20px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.results-card[hidden] {
    display: none;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: #2d2d44;
    border-bottom: 1px solid #3d3d5a;
}

.results-header h2 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: #cdd6f4;
}

.hide-results-btn {
    background: transparent;
    border: 1px solid #45456a;
    color: #a6adc8;
    padding: 4px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s;
}

.hide-results-btn:hover {
    background: #3d3d5a;
    color: #cdd6f4;
}

#results-list {
    padding: 15px 20px;
    max-height: 500px;
    overflow-y: auto;
}

.result-block {
    background: #1a1a2e;
    border-radius: 6px;
    border: 1px solid #2d2d44;
    margin-bottom: 15px;
    overflow: hidden;
}

.result-block:last-child {
    margin-bottom: 0;
}

.result-block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background: #2d2d44;
    border-bottom: 1px solid #3d3d5a;
}

.result-block-header h3 {
    margin: 0;
    font-size: 14px;
    font-weight: 500;
    color: #cdd6f4;
}

.result-block .results-output {
    padding: 15px;
    margin: 0;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 12px;
    line-height: 1.5;
    color: #a6adc8;
    white-space: pre-wrap;
    word-wrap: break-word;
    max-height: 500px;
    overflow-y: auto;
}

/* Log Actions */
.log-actions {
    display: flex;
    gap: 8px;
}

.show-results-btn {
    background: transparent;
    border: 1px solid #45456a;
    color: #89b4fa;
    padding: 4px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s;
}

.show-results-btn:hover {
    background: #3d3d5a;
    color: #89b4fa;
}




/* Math Solver styles */
.problems-editor {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.problems-editor-footer {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: #6b7a8f;
    padding: 4px 6px;
}

.problems-editor-hint {
    font-style: italic;
}

.problems-editor-count {
    font-weight: 500;
}

/* Math solution rendering in results */
.solution-label {
    font-weight: 600;
    color: #89b4fa;
}

.solution-line {
    margin: 6px 0;
    padding-left: 12px;
}

.solution-math {
    font-family: 'IBM Plex Mono', monospace;
}

.solution-note {
    color: #6b7a8f;
    font-size: 0.9rem;
    margin-left: 8px;
}

.answer-label {
    font-weight: 600;
    color: #a6e3a1;
}

.answer {
    font-weight: 600;
    color: #f9e2af;
}

table.math.factors {
    border-collapse: collapse;
    margin: 8px 0;
}

table.math.factors td {
    padding: 4px 12px;
    border: 1px solid #313244;
    text-align: center;
}

/* Review item styles */
.review-item {
    border: 1px solid #313244;
    border-radius: 6px;
    padding: 12px;
    margin-bottom: 10px;
    background: #1e1e2e;
}

.review-item.flagged {
    border-color: #f9e2af;
    background: #2a2a3e;
}

.review-item.edited {
    border-color: #a6e3a1;
}

.review-item-header {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

.review-item-num {
    font-weight: 600;
    color: #89b4fa;
}

.review-item-flag-text {
    font-size: 0.8rem;
    color: #6b7a8f;
}

.review-field {
    display: flex;
    gap: 12px;
    padding: 4px 0;
    border-bottom: 1px solid #2a2a3e;
}

.review-field-label {
    font-weight: 500;
    color: #6b7a8f;
    min-width: 80px;
    font-size: 0.85rem;
}

.review-field-value {
    flex: 1;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.9rem;
    white-space: pre-wrap;
    word-break: break-word;
}

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

.download-json-btn.all-edited {
    background: #a6e3a1;
    color: #1e1e2e;
}

.review-item-edit-wrap {
    margin-top: 8px;
}

.review-item-edit-textarea {
    width: 100%;
    min-height: 120px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.85rem;
    background: #0d0d1a;
    color: #cdd6f4;
    border: 1px solid #313244;
    border-radius: 4px;
    padding: 8px;
}

.review-item-edit-actions {
    display: flex;
    gap: 8px;
    margin-top: 6px;
}

.review-item-edit-error {
    color: #f38ba8;
    font-size: 0.85rem;
    margin: 4px 0;
}








.page-preview-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.page-preview-modal[hidden] {
  display: none;
}
.page-preview-modal-content {
  background: #1e1e2e;
  border-radius: 10px;
  width: 100%;
  max-width: 1100px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.page-preview-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid #313244;
}
.page-preview-modal-header h3 { margin: 0; }
.page-preview-close-btn { margin-left: 8px; }
.page-preview-modal-body {
  overflow-y: auto;
  padding: 18px;
  flex: 1;
}
.page-preview-modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-top: 1px solid #313244;
}
.page-preview-count-label { color: #a6adc8; font-size: 14px; }

.page-preview-file-section { margin-bottom: 20px; }
.page-thumb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 14px;
  margin-top: 10px;
}
.page-thumb {
  cursor: pointer;
  position: relative;
  border: 2px solid #45475a;
  border-radius: 6px;
  padding: 4px;
  text-align: center;
  background: #181825;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.page-thumb canvas { width: 100%; height: auto; display: block; border-radius: 3px; }
.page-thumb.selected {
  border-color: #89b4fa;
  box-shadow: 0 0 0 2px rgba(137, 180, 250, 0.35);
}
.page-thumb-label { font-size: 12px; margin-top: 4px; color: #cdd6f4; }
.page-thumb-check {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #45475a;
  color: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: bold;
  border: 2px solid #1e1e2e;
}
.page-thumb.selected .page-thumb-check {
  background: #89b4fa;
  color: #1e1e2e;
}
/* ========== PAGE PREVIEW: TRIGGER + MODAL BUTTONS ========== */

/* "🖼️ পেজ প্রিভিউ দেখুন ও সিলেক্ট করুন" — sidebar trigger button */
#preview-pages-btn {
  width: 100%;
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  color: #0b0d12;
  border: none;
  border-radius: 8px;
  padding: 11px 16px;
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 14px rgba(108, 140, 255, 0.25);
}

#preview-pages-btn:hover:not(:disabled) {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(108, 140, 255, 0.4);
}

#preview-pages-btn:active:not(:disabled) {
  transform: translateY(0);
}

#preview-pages-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* Modal header: Select All / Select None / Close */
.page-preview-modal-header .chunk-select-actions {
  gap: 8px;
}

.page-preview-modal-header .chunk-select-actions button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 7px;
  padding: 7px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

#preview-select-all-btn:hover,
#preview-select-none-btn:hover {
  border-color: var(--accent);
  color: var(--text);
  background: var(--accent-dim);
}

#page-preview-close-btn {
  border-color: rgba(248, 113, 113, 0.3) !important;
  color: var(--err) !important;
}

#page-preview-close-btn:hover {
  background: rgba(248, 113, 113, 0.12) !important;
  border-color: var(--err) !important;
}

/* Modal footer: main confirm CTA */
.page-preview-modal-footer {
  gap: 16px;
}

#confirm-page-selection-btn {
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  color: #0b0d12;
  border: none;
  border-radius: 8px;
  padding: 12px 26px;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
  box-shadow: 0 4px 14px rgba(108, 140, 255, 0.3);
}

#confirm-page-selection-btn:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(108, 140, 255, 0.45);
}

#confirm-page-selection-btn:active {
  transform: translateY(0);
}

/* Footer count label gets a bit more presence next to the big CTA */
.page-preview-count-label {
  font-weight: 600;
  font-size: 0.88rem;
}

/* Small screens: stack footer, keep CTA full-width */
@media (max-width: 640px) {
  .page-preview-modal-footer {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }
  #confirm-page-selection-btn {
    width: 100%;
  }
  .page-preview-modal-header {
    flex-wrap: wrap;
    gap: 10px;
  }
  .page-preview-modal-header .chunk-select-actions {
    flex-wrap: wrap;
  }
}



/* ---------- Recovery button (log-এর ভেতরে workspace/log restore বাটন) ---------- */
.recovery-btn {
  display: block;
  width: 100%;
  margin: 6px 0 2px;
  padding: 10px 14px;
  border: 1px solid #f9e2af;
  border-radius: 8px;
  background: linear-gradient(180deg, #016101, #037a61);
  color: #f9e2af;
  font-size: 1.5em;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
}

.recovery-btn::before {
  content: "";
}

.recovery-btn:hover {
  background: linear-gradient(180deg, #4a4230, #35301c);
  box-shadow: 0 0 0 2px rgba(249, 226, 175, 0.25);
}

.recovery-btn:active {
  transform: scale(0.98);
}

.recovery-btn:focus-visible {
  outline: 2px solid #f9e2af;
  outline-offset: 2px;
}

/* Results = big centered modal */
.results-card {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(15, 15, 20, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.results-card[hidden] { display: none; }

.results-modal-box {
  background: #fff;
  width: min(1100px, 95vw);
  height: min(85vh, 900px);
  border-radius: 14px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.results-modal-box .results-header {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid #e5e5e5;
}

.results-modal-box #results-list {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 20px;
}

/* modal খোলা থাকলে পেছনের পেজ স্ক্রল বন্ধ */
body.modal-lock-scroll { overflow: hidden; }


/* চাংকের তালিকা স্ক্রোলযোগ্য বক্সে */
#chunks-by-file {
  max-height: 320px;      /* পছন্দমতো বদলান, যেমন 50vh */
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 4px;
  border: 1px solid rgba(128, 128, 128, 0.3);
  border-radius: 8px;
}

/* ফাইলের নাম স্ক্রোলের সময় উপরে আটকে থাকবে */
#chunks-by-file .chunk-file-section h4 {
  position: sticky;
  top: 0;
  z-index: 1;
  margin: 0;
  padding: 6px 8px;
  background: var(--sidebar-bg, #1e1e2e); /* আপনার সাইডবারের ব্যাকগ্রাউন্ড রঙ দিন */
}

/* সফল চাংকে ক্লিক করা যাবে */
#chunks-by-file li.done { cursor: pointer; }
#chunks-by-file li.done:hover { background: rgba(166, 227, 161, 0.12); }

/* JSON মোডাল */
.chunk-json-modal {
  position: fixed;
  inset: 0;
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.6);
  padding: 20px;
}
.chunk-json-modal[hidden] { display: none; } /* display:flex-এর কারণে hidden কাজ না করা ঠেকায় */

.chunk-json-box {
  width: min(900px, 100%);
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  background: var(--sidebar-bg, #1e1e2e); /* আপনার থিমের রঙ দিন */
  border: 1px solid rgba(128, 128, 128, 0.4);
  border-radius: 10px;
  overflow: hidden;
}
.chunk-json-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(128, 128, 128, 0.3);
}
.chunk-json-header h3 { margin: 0; font-size: 15px; }
.chunk-json-output {
  margin: 0;
  padding: 14px;
  overflow: auto;
  flex: 1;
  font-size: 13px;
  white-space: pre-wrap;
  word-break: break-word;
}