/* ==========================================================================
   TEXT ANNOTATOR — CLEAN, MODERN & ROUNDED (NO SHADOWS)
   ========================================================================== */

:root {
  --bg-app: #f8fafc;
  --bg-card: #ffffff;
  --bg-subtle: #f1f5f9;
  --bg-hover: #e2e8f0;

  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;

  --border-color: #cbd5e1;
  --border-light: #e2e8f0;

  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-text: #ffffff;

  --highlight-bg: #fef08a;
  --highlight-border: #facc15;
  --highlight-active-bg: #fde047;
  --highlight-text: #854d0e;

  --badge-bg: #0f172a;
  --badge-text: #ffffff;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;

  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", Consolas, Menlo, Monaco, monospace;
}

/* Base Reset - No shadows anywhere */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  box-shadow: none !important;
}

body {
  background-color: var(--bg-app);
  color: var(--text-main);
  font-family: var(--font-main);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.app-header {
  background-color: var(--bg-card);
  border-bottom: 1.5px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

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

.brand-icon {
  width: 34px;
  height: 34px;
  background-color: var(--primary);
  color: #ffffff;
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
}

.brand-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.3px;
}

/* Navigation Tabs */
.nav-tabs {
  display: flex;
  align-items: center;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-light);
  padding: 4px;
  border-radius: var(--radius-pill);
  gap: 4px;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
}

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

.tab-btn.active {
  background-color: var(--bg-card);
  color: var(--primary);
  border: 1px solid var(--border-color);
}

.tab-count {
  background-color: var(--primary);
  color: #ffffff;
  font-size: 11px;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: var(--radius-pill);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.save-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-light);
  color: var(--text-muted);
}

.save-status-pill.saved {
  color: #166534;
  background-color: #f0fdf4;
  border-color: #bbf7d0;
}

.save-status-pill .dot {
  width: 7px;
  height: 7px;
  border-radius: var(--radius-pill);
  background-color: currentColor;
}

/* Universal Buttons */
.btn {
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.15s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--primary-text);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: var(--bg-card);
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--bg-subtle);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-muted);
  border-color: var(--border-light);
}

.btn-outline:hover {
  color: var(--text-main);
  background-color: var(--bg-subtle);
  border-color: var(--border-color);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 12.5px;
}

/* Main Container */
.main-content {
  max-width: 1300px;
  width: 100%;
  margin: 0 auto;
  padding: 24px;
  flex: 1;
}

/* View Sections */
.tab-view {
  display: none;
}

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

/* Card Container */
.card-box {
  background-color: var(--bg-card);
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
}

/* ==========================================================================
   VIEW 1: RAW TEXT INPUT
   ========================================================================== */
.input-view {
  max-width: 860px;
  margin: 10px auto;
}

.card-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 12px;
}

.card-title {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-main);
}

.card-subtitle {
  font-size: 13.5px;
  color: var(--text-muted);
  margin-top: 3px;
}

.text-input-area {
  width: 100%;
  min-height: 360px;
  background-color: var(--bg-subtle);
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  font-family: inherit;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-main);
  resize: vertical;
  outline: none;
  transition: border-color 0.15s ease;
}

.text-input-area:focus {
  border-color: var(--primary);
  background-color: #ffffff;
}

.input-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 18px;
  flex-wrap: wrap;
  gap: 12px;
}

.stats-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.stat-chip {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  background-color: var(--bg-subtle);
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-light);
}

/* ==========================================================================
   VIEW 2: ANNOTATION WORKSPACE
   ========================================================================== */
.annotation-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.85fr) minmax(340px, 1.15fr);
  gap: 24px;
  align-items: start;
}

@media (max-width: 960px) {
  .annotation-grid {
    grid-template-columns: 1fr;
  }
}

.canvas-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 14px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 10px;
}

.toolbar-hint {
  font-size: 13px;
  color: var(--text-muted);
  background-color: var(--bg-subtle);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.text-canvas-wrapper {
  position: relative;
  min-height: 380px;
}

.annotatable-text {
  font-size: 17px;
  line-height: 1.85;
  color: var(--text-main);
  white-space: pre-wrap;
  word-break: break-word;
  user-select: text;
  outline: none;
}

/* Mark Highlights (Warm modern highlighter look) */
.annotation-mark {
  background-color: var(--highlight-bg);
  border-bottom: 2px solid var(--highlight-border);
  border-radius: 4px;
  padding: 1px 3px;
  margin: 0 1px;
  cursor: pointer;
  transition: all 0.15s ease;
  position: relative;
}

.annotation-mark:hover {
  background-color: var(--highlight-active-bg);
}

.annotation-mark.active-pulse {
  background-color: #fde047;
  outline: 2px solid #ca8a04;
}

.annotation-mark::after {
  content: "[" attr(data-index) "]";
  font-size: 10px;
  font-weight: 700;
  vertical-align: super;
  margin-left: 2px;
  padding: 1px 5px;
  border-radius: var(--radius-pill);
  background-color: var(--badge-bg);
  color: var(--badge-text);
  display: inline-block;
  line-height: 1.1;
  pointer-events: none;
  user-select: none;
}

/* ==========================================================================
   DIRECT INLINE COMMENT POPOVER (At exact end of selection)
   ========================================================================== */
.inline-popover {
  position: absolute;
  z-index: 1000;
  display: none;
  pointer-events: auto;
  transform: translateY(6px);
}

.inline-popover.visible {
  display: block;
}

.popover-box {
  display: flex;
  align-items: center;
  gap: 6px;
  background-color: #ffffff;
  border: 1.5px solid var(--primary);
  border-radius: var(--radius-pill);
  padding: 4px 6px 4px 14px;
  min-width: 320px;
  max-width: 460px;
}

.popover-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: 14px;
  color: var(--text-main);
  padding: 6px 0;
}

.popover-input::placeholder {
  color: var(--text-light);
}

.popover-btn-submit {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-pill);
  background-color: var(--primary);
  color: #ffffff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.15s ease;
}

.popover-btn-submit:hover {
  opacity: 0.9;
}

.popover-btn-close {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-pill);
  background-color: transparent;
  color: var(--text-muted);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.popover-btn-close:hover {
  background-color: var(--bg-subtle);
  color: var(--text-main);
}

/* Sidebar Comments */
.comments-panel {
  position: sticky;
  top: 80px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-height: calc(100vh - 100px);
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 12px;
}

.sidebar-title {
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.comments-list-box {
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-right: 4px;
  max-height: 580px;
}

.comment-item {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 14px;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.comment-item:hover {
  border-color: var(--border-color);
}

.comment-item.active {
  border-color: var(--primary);
  background-color: #eff6ff;
}

.comment-item-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.comment-badge {
  font-size: 11px;
  font-weight: 700;
  background-color: var(--primary);
  color: #ffffff;
  padding: 2px 7px;
  border-radius: var(--radius-pill);
}

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

.action-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 3px 6px;
  font-size: 12px;
  border-radius: 4px;
}

.action-btn:hover {
  color: var(--text-main);
}

.comment-item-quote {
  font-size: 13px;
  color: var(--text-muted);
  border-left: 2px solid var(--border-color);
  padding-left: 8px;
  margin-bottom: 8px;
  font-style: italic;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.comment-item-text {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
  line-height: 1.45;
}

/* Empty State */
.empty-box {
  text-align: center;
  padding: 40px 16px;
  color: var(--text-muted);
}

.empty-box-title {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text-main);
  margin-top: 8px;
}

.empty-box-desc {
  font-size: 13px;
  margin-top: 4px;
  line-height: 1.5;
}

/* ==========================================================================
   VIEW 3: COMPLETE EXPORT VIEW
   ========================================================================== */
.export-view {
  max-width: 960px;
  margin: 10px auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.export-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

.format-selector {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.format-btn {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.15s ease;
}

.format-btn:hover {
  border-color: var(--border-color);
  color: var(--text-main);
}

.format-btn.active {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.preview-output-box {
  background-color: var(--bg-subtle);
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  font-family: var(--font-main);
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text-main);
  white-space: pre-wrap;
  word-break: break-word;
  user-select: all;
  min-height: 320px;
  max-height: 600px;
  overflow-y: auto;
}

/* Toast */
.toast-wrap {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast-item {
  background-color: #0f172a;
  color: #ffffff;
  font-size: 13px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  pointer-events: auto;
}

/* Footer */
.app-footer {
  border-top: 1px solid var(--border-light);
  background-color: var(--bg-card);
  padding: 14px 24px;
  margin-top: auto;
}

.footer-content {
  max-width: 1300px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}