frontend/src/pages/KnowledgeBase/DocumentDetails.css

/* ============================================================
   DOCUMENT DETAILS PAGE
   Dark Theme Aesthetic with Animated Orbs
   ============================================================ */

.doc-page {
  position: relative;
  min-height: 100vh;
  width: 100%;
  background: var(--background-color, #0f172a);
  color: var(--text-primary, #f8fafc);
  overflow-x: hidden;
  font-family: 'Inter', sans-serif;
}

/* ── Animated Background ── */
.doc-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.doc-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.4;
  animation: docFloat 20s ease-in-out infinite alternate;
}

.doc-orb-1 {
  top: -10%;
  right: -5%;
  width: 500px;
  height: 500px;
  background: rgba(99, 102, 241, 0.4); /* Indigo */
}

.doc-orb-2 {
  bottom: -20%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: rgba(168, 85, 247, 0.3); /* Purple */
  animation-delay: -5s;
}

.doc-orb-3 {
  top: 40%;
  left: 30%;
  width: 400px;
  height: 400px;
  background: rgba(6, 182, 212, 0.2); /* Cyan */
  animation-delay: -10s;
}

@keyframes docFloat {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-30px, 50px) scale(1.05); }
  100% { transform: translate(40px, -20px) scale(0.95); }
}

.doc-grid-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.6;
}

/* ── Content Wrapper ── */
.doc-content-wrapper {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ── Header ── */
.doc-header {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

.doc-back-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
  color: var(--text-secondary, #94a3b8);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s ease;
  backdrop-filter: blur(10px);
}

.doc-back-btn:hover {
  color: var(--text-primary, #f8fafc);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateX(-2px);
}

/* ── Loading & Errors ── */
.doc-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem;
  color: var(--text-muted, #64748b);
  gap: 1rem;
}

.doc-spinner {
  width: 30px;
  height: 30px;
  border: 3px solid rgba(99, 102, 241, 0.2);
  border-top-color: var(--primary-color, #6366f1);
  border-radius: 50%;
  animation: docSpin 1s linear infinite;
}

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

.doc-error-card {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
  color: #fca5a5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.doc-retry-btn {
  background: rgba(239, 68, 68, 0.2);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #fecaca;
  padding: 0.5rem 1.5rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

.doc-retry-btn:hover {
  background: rgba(239, 68, 68, 0.3);
}

/* ── Layout Skeleton ── */
.doc-metadata-panel {
  background: var(--surface-color, rgba(30, 41, 59, 0.7));
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
  border-radius: 16px;
  padding: 1.5rem;
  backdrop-filter: blur(12px);
}

.doc-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0;
  color: var(--text-primary, #f8fafc);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 400px;
}

.doc-metadata-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.doc-title-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.doc-edit-btn {
  background: transparent;
  border: none;
  color: var(--text-muted, #64748b);
  cursor: pointer;
  padding: 0.4rem;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.doc-edit-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary, #f8fafc);
}

.doc-name-input {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--primary-color, #6366f1);
  color: var(--text-primary, #f8fafc);
  font-size: 1.5rem;
  font-weight: 700;
  font-family: inherit;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  width: 400px;
  outline: none;
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

/* ── Status Pills ── */
.doc-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.doc-pill {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary, #94a3b8);
}

.doc-pill.status-completed {
  background: rgba(34, 197, 94, 0.1);
  border-color: rgba(34, 197, 94, 0.2);
  color: #86efac;
}

.doc-pill.status-processing {
  background: rgba(56, 189, 248, 0.1);
  border-color: rgba(56, 189, 248, 0.2);
  color: #7dd3fc;
}

.doc-pill.status-failed {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.2);
  color: #fca5a5;
}

/* ── Warning Banner (Unparsed CTA) ── */
.doc-warning-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(217, 119, 6, 0.05) 100%);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.05);
  margin-top: 1rem;
}

.doc-warning-content {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.doc-warning-icon {
  color: #fbbf24;
  margin-top: 0.2rem;
}

.doc-warning-content h3 {
  margin: 0 0 0.25rem 0;
  font-size: 1.1rem;
  color: #fcd34d;
}

.doc-warning-content p {
  margin: 0;
  font-size: 0.9rem;
  color: rgba(252, 211, 77, 0.8);
}

.doc-btn-primary {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--primary-color, #6366f1);
  color: white;
  border: none;
  padding: 0.6rem 1.25rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.doc-btn-primary:hover:not(:disabled) {
  background: var(--primary-hover, #4f46e5);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
}

.doc-btn-primary:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.doc-spinner-small {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: docSpin 1s linear infinite;
}

/* ── Split Layout & Viewer ── */
.doc-split-layout {
  display: flex;
  gap: 1.5rem;
  margin-top: 1.5rem;
  align-items: stretch;
  height: calc(100vh - 250px); /* Locks the layout height to the viewport */
  min-height: 600px;
}

.doc-left-panel {
  flex: 1;
  min-width: 0; /* Prevents flexbox from stretching beyond 50% due to wide content */
  width: 50%;
  background: var(--surface-color, rgba(30, 41, 59, 0.7));
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
  border-radius: 16px;
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  overflow: hidden; /* Crucial to prevent child bleed */
}

.doc-right-panel {
  flex: 1;
  min-width: 0;
  width: 50%;
  background: var(--surface-color, rgba(30, 41, 59, 0.7));
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
  border-radius: 16px;
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.doc-panel-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  color: var(--text-muted, #64748b);
  padding: 3rem;
  text-align: center;
}

.placeholder-icon {
  opacity: 0.3;
  margin-bottom: 1rem;
}

.doc-viewer-header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(15, 23, 42, 0.4);
}

.doc-viewer-header h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary, #94a3b8);
}

.doc-viewer-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #0f172a;
  position: relative;
  min-height: 0; /* Forces flex child to respect container height and enables inner scrolling */
  overflow: hidden;
}

.doc-pdf-viewer {
  width: 100%;
  height: 100%;
  border: none;
  background: #fff;
}

.doc-text-viewer {
  margin: 0;
  padding: 1.5rem;
  overflow: auto;
  font-family: 'Fira Code', monospace;
  font-size: 0.9rem;
  color: #e2e8f0;
  white-space: pre-wrap;
  word-wrap: break-word;
  line-height: 1.6;
  height: 100%;
}

.doc-unsupported {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  color: var(--text-muted, #64748b);
  gap: 1rem;
  padding: 3rem;
}

/* ── Chunks List ── */
.doc-chunks-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.5rem;
  overflow-y: auto;
  height: 100%;
}

.doc-chunk-card {
  flex-shrink: 0; /* Prevents cards from squishing to fit container height */
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.2s ease;
}

.doc-chunk-card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.doc-chunk-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.doc-chunk-num {
  font-weight: 600;
  color: var(--text-primary, #f8fafc);
  font-size: 0.9rem;
}

.doc-chunk-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted, #64748b);
}

.doc-chunk-id {
  font-family: 'Fira Code', monospace;
  background: rgba(255, 255, 255, 0.05);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.doc-chunk-size {
  display: flex;
  align-items: center;
}

.doc-chunk-content {
  padding: 1rem;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-secondary, #94a3b8);
  white-space: pre-wrap;
  word-wrap: break-word;
  max-height: 300px;
  overflow-y: auto;
}

/* ── Add Chunk Form ── */
.doc-add-chunk-form {
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.015);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: inset 0 -10px 20px -10px rgba(0, 0, 0, 0.2);
}

.doc-add-chunk-form h4 {
  margin: 0 0 1rem 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary, #f8fafc);
}

.doc-textarea {
  width: 100%;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary, #f8fafc);
  font-family: inherit;
  font-size: 0.9rem;
  padding: 0.75rem;
  border-radius: 8px;
  resize: vertical;
  min-height: 100px;
  outline: none;
  transition: all 0.2s ease;
  line-height: 1.5;
}

.doc-textarea:focus {
  border-color: var(--primary-color, #6366f1);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}
.doc-textarea::placeholder {
  color: var(--text-muted, #64748b);
}

/* ── Left Panel Tabs ── */
.doc-panel-tabs {
  display: flex;
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.doc-panel-tab {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-muted, #64748b);
  padding: 1rem;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border-bottom: 2px solid transparent;
}

.doc-panel-tab:hover {
  color: var(--text-primary, #f8fafc);
  background: rgba(255, 255, 255, 0.02);
}

.doc-panel-tab.active {
  color: var(--primary-color, #818cf8);
  border-bottom-color: var(--primary-color, #6366f1);
  background: rgba(99, 102, 241, 0.05);
}

/* ── Testing Container ── */
.doc-testing-container {
  display: flex;
  flex-direction: column;
  flex: 1;
  height: 100%;
}

.doc-testing-controls {
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.015);
}

.doc-testing-search-bar {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.doc-test-input {
  flex: 1;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary, #f8fafc);
  font-family: inherit;
  font-size: 0.9rem;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  outline: none;
  transition: all 0.2s ease;
}

.doc-test-input:focus {
  border-color: var(--primary-color, #6366f1);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.doc-test-select {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary, #f8fafc);
  font-family: inherit;
  font-size: 0.9rem;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  outline: none;
  cursor: pointer;
}
.doc-test-select option {
  background: #0f172a;
  color: #f8fafc;
}

/* ── Responsive Layout Breakpoints ── */

/* For smaller desktop/laptops and tablets */
@media (max-width: 1400px) {
  .doc-split-layout {
    flex-direction: column;
    height: auto;
    min-height: auto;
  }
  
  .doc-left-panel, .doc-right-panel {
    flex: none; /* Crucial: stops flex-basis: 0 from collapsing vertical height */
    width: 100%;
    height: 600px;
    min-height: 600px;
  }
  
  .doc-metadata-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  
  .doc-name-input {
    width: 100%;
    max-width: 100%;
  }

  .doc-title {
    max-width: 100%;
    white-space: normal;
  }
}

/* For mobile devices */
@media (max-width: 768px) {
  .doc-content-wrapper {
    padding: 1rem;
  }
  
  .doc-testing-search-bar {
    flex-direction: column;
    align-items: stretch;
  }
  
  .doc-left-panel, .doc-right-panel {
    height: 500px;
    min-height: 500px;
  }
}