/* ═══════════════════════════════════════════════════════════════════
   duplicate-tool.css  -  Remove Duplicate Lines  |  Scoped under #drt-root
   Theme: Light / Blue-Indigo accent - Premium SaaS
   All rules use #drt-root prefix - beats global reset, zero bleed
═══════════════════════════════════════════════════════════════════ */

/* ── Design Tokens ─────────────────────────────────────────────── */
#drt-root {
  --drt-bg:           #f8f9ff;
  --drt-surface:      #ffffff;
  --drt-surface2:     #f5f6ff;
  --drt-surface3:     #eef0ff;
  --drt-border:       #dde1f0;
  --drt-border2:      #c7ccdf;
  --drt-accent:       #4f46e5;
  --drt-accent-bright:#6366f1;
  --drt-accent-dim:   rgba(79,70,229,0.09);
  --drt-accent-glow:  rgba(99,102,241,0.20);
  --drt-accent-ring:  rgba(79,70,229,0.28);
  --drt-ok:           #16a34a;
  --drt-ok-dim:       rgba(22,163,74,0.12);
  --drt-warn:         #d97706;
  --drt-warn-dim:     rgba(217,119,6,0.10);
  --drt-red:          #dc2626;
  --drt-red-dim:      rgba(220,38,38,0.09);
  --drt-text:         #1a1b2e;
  --drt-text2:        #4b4f6a;
  --drt-text3:        #6b7091;
  --drt-muted:        #9da3c0;
  --drt-sans:         'Plus Jakarta Sans', 'Outfit', system-ui, -apple-system, sans-serif;
  --drt-mono:         'JetBrains Mono','Fira Code',ui-monospace,monospace;
  --drt-radius:       14px;
  --drt-radius-sm:    9px;
  --drt-radius-xs:    5px;
  --drt-shadow-sm:    0 1px 3px rgba(79,70,229,.07),0 1px 2px rgba(0,0,0,.04);
  --drt-shadow:       0 4px 16px rgba(79,70,229,.09),0 1px 4px rgba(0,0,0,.04);
  --drt-shadow-lg:    0 12px 40px rgba(79,70,229,.11),0 2px 8px rgba(0,0,0,.05);
  --drt-ease:         cubic-bezier(.25,.46,.45,.94);
  --drt-t:            160ms;

  font-family: var(--drt-sans);
  color: var(--drt-text);
  background: var(--drt-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px 100px;
}

#drt-root *, #drt-root *::before, #drt-root *::after { box-sizing: border-box; }
#drt-root button  { cursor: pointer; font-family: var(--drt-sans); }
#drt-root textarea, #drt-root input, #drt-root select { font-family: var(--drt-sans); }

/* ════════════════════ HERO ════════════════════════════════════ */
#drt-root .drt-hero {
  text-align: center;
  padding: 48px 20px 36px;
}
#drt-root .drt-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 16px;
  border-radius: 99px;
  background: var(--drt-accent-dim);
  border: 1px solid var(--drt-accent-ring);
  color: var(--drt-accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
#drt-root .drt-hero-badge svg { width:14px; height:14px; flex-shrink:0; }
#drt-root .drt-hero h1 {
  font-size: clamp(2rem,5vw,3.1rem);
  font-weight: 800;
  line-height: 1.12;
  color: var(--drt-text);
  letter-spacing: -.02em;
  margin: 0 0 14px;
}
#drt-root .drt-hero h1 span {
  background: linear-gradient(135deg, var(--drt-accent) 0%, var(--drt-accent-bright) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
#drt-root .drt-hero p {
  font-size: 1.0625rem;
  color: var(--drt-text2);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ════════════════════ MAIN GRID ═══════════════════════════════ */
#drt-root .drt-main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
  margin-bottom: 20px;
}
@media (max-width: 860px) {
  #drt-root .drt-main { grid-template-columns: 1fr; }
}

/* ════════════════════ CARDS ════════════════════════════════════ */
#drt-root .drt-card {
  background: var(--drt-surface);
  border: 1.5px solid var(--drt-border);
  border-radius: var(--drt-radius);
  box-shadow: var(--drt-shadow);
  overflow: hidden;
  margin-bottom: 16px;
}
#drt-root .drt-card:last-child { margin-bottom: 0; }

#drt-root .drt-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 13px 18px;
  border-bottom: 1.5px solid var(--drt-border);
  background: linear-gradient(to bottom, var(--drt-surface2), var(--drt-surface));
  flex-wrap: wrap;
}
#drt-root .drt-card-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--drt-text);
}
#drt-root .drt-card-title svg { width:16px; height:16px; color:var(--drt-accent); flex-shrink:0; }
#drt-root .drt-card-actions { display:flex; align-items:center; gap:7px; flex-wrap:wrap; }

/* ════════════════════ BUTTONS ═════════════════════════════════ */
#drt-root .drt-btn {
  display: inline-flex !important;
  align-items: center;
  gap: 6px;
  padding: 7px 13px;
  border-radius: var(--drt-radius-sm);
  font-size: 12.5px;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all var(--drt-t) var(--drt-ease);
  border: 1.5px solid transparent;
}
#drt-root .drt-btn svg { width:14px; height:14px; flex-shrink:0; }

/* Primary */
#drt-root .drt-btn-primary {
  background: linear-gradient(135deg, var(--drt-accent), var(--drt-accent-bright));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 2px 8px var(--drt-accent-glow);
}
#drt-root .drt-btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px var(--drt-accent-glow);
  filter: brightness(1.07);
}
#drt-root .drt-btn-primary:active { transform: translateY(0); filter:brightness(.97); }

/* Outline */
#drt-root .drt-btn-outline {
  background: transparent;
  color: var(--drt-text2);
  border-color: var(--drt-border2);
}
#drt-root .drt-btn-outline:hover {
  border-color: var(--drt-accent);
  color: var(--drt-accent);
  background: var(--drt-accent-dim);
}

/* Ghost */
#drt-root .drt-btn-ghost {
  background: transparent;
  color: var(--drt-text3);
  border-color: transparent;
}
#drt-root .drt-btn-ghost:hover { background: var(--drt-surface3); color: var(--drt-text2); }

/* Success */
#drt-root .drt-btn-ok {
  background: var(--drt-ok-dim);
  color: var(--drt-ok);
  border-color: rgba(22,163,74,0.22);
}

/* Danger */
#drt-root .drt-btn-danger {
  background: var(--drt-red-dim);
  color: var(--drt-red);
  border-color: rgba(220,38,38,0.20);
}
#drt-root .drt-btn-danger:hover { background: rgba(220,38,38,0.16); }

/* Large CTA button */
#drt-root .drt-btn-lg {
  padding: 12px 24px;
  font-size: 14.5px;
  border-radius: var(--drt-radius-sm);
}

/* ════════════════════ TEXTAREA ════════════════════════════════ */
#drt-root .drt-textarea {
  display: block;
  width: 100%;
  min-height: 280px;
  padding: 14px 16px;
  font-size: 13.5px;
  font-family: var(--drt-mono);
  line-height: 1.7;
  color: var(--drt-text);
  background: var(--drt-surface);
  border: none;
  resize: vertical;
  outline: none;
  transition: background var(--drt-t) var(--drt-ease);
}
#drt-root .drt-textarea::placeholder { color: var(--drt-muted); }
#drt-root .drt-textarea:focus { background: var(--drt-surface2); }

/* Output textarea - slightly different bg */
#drt-root .drt-textarea-out {
  background: var(--drt-surface2);
  color: var(--drt-text);
}

/* ════════════════════ STATS BAR ══════════════════════════════ */
#drt-root .drt-inline-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px 10px;
  flex-wrap: wrap;
}
#drt-root .drt-inline-pill {
  display: flex;
  align-items: baseline;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 99px;
  background: var(--drt-surface3);
  border: 1px solid var(--drt-border);
  font-size: 12px;
}
#drt-root .drt-pill-val {
  font-size: 13px;
  font-weight: 700;
  color: var(--drt-accent);
}
#drt-root .drt-pill-lbl { color: var(--drt-text3); font-weight: 500; }

/* Removed count pill */
#drt-root .drt-pill-removed .drt-pill-val { color: var(--drt-red); }

/* ════════════════════ OPTIONS PANEL ══════════════════════════ */
#drt-root .drt-options {
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

#drt-root .drt-option-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

#drt-root .drt-option-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--drt-text);
  line-height: 1.4;
}
#drt-root .drt-option-desc {
  font-size: 11.5px;
  color: var(--drt-text3);
  margin-top: 2px;
  line-height: 1.4;
}

/* Toggle Switch */
#drt-root .drt-toggle {
  position: relative;
  width: 40px;
  height: 22px;
  flex-shrink: 0;
}
#drt-root .drt-toggle input { opacity: 0; width: 0; height: 0; position: absolute; }
#drt-root .drt-toggle-slider {
  position: absolute;
  inset: 0;
  border-radius: 99px;
  background: var(--drt-border2);
  transition: background var(--drt-t) var(--drt-ease);
  cursor: pointer;
}
#drt-root .drt-toggle-slider::after {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,.18);
  transition: transform var(--drt-t) var(--drt-ease);
}
#drt-root .drt-toggle input:checked + .drt-toggle-slider {
  background: var(--drt-accent);
}
#drt-root .drt-toggle input:checked + .drt-toggle-slider::after {
  transform: translateX(18px);
}

/* Select dropdown */
#drt-root .drt-select {
  padding: 7px 10px;
  border-radius: var(--drt-radius-xs);
  border: 1.5px solid var(--drt-border2);
  background: var(--drt-surface);
  color: var(--drt-text);
  font-size: 12.5px;
  font-weight: 600;
  outline: none;
  cursor: pointer;
  transition: border-color var(--drt-t) var(--drt-ease);
  min-width: 130px;
}
#drt-root .drt-select:focus, #drt-root .drt-select:hover {
  border-color: var(--drt-accent);
}

/* Divider */
#drt-root .drt-divider {
  height: 1px;
  background: var(--drt-border);
  margin: 2px 0;
}

/* ════════════════════ ACTION BAR ══════════════════════════════ */
#drt-root .drt-action-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-top: 1.5px solid var(--drt-border);
  background: linear-gradient(to top, var(--drt-surface2), var(--drt-surface));
  flex-wrap: wrap;
}

/* ════════════════════ HIGHLIGHT PREVIEW ═══════════════════════ */
#drt-root .drt-highlight-wrap {
  font-family: var(--drt-mono);
  font-size: 13px;
  line-height: 1.7;
  padding: 14px 16px;
  min-height: 280px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
  background: var(--drt-surface);
}
#drt-root .drt-line-dup {
  display: block;
  background: rgba(220,38,38,0.09);
  border-left: 3px solid var(--drt-red);
  padding-left: 8px;
  margin-left: -8px;
  color: #b91c1c;
  text-decoration: line-through;
  opacity: 0.7;
}
#drt-root .drt-line-unique {
  display: block;
  color: var(--drt-text);
}
#drt-root .drt-hl-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  gap: 10px;
  color: var(--drt-muted);
  font-family: var(--drt-sans);
  font-size: 13px;
}
#drt-root .drt-hl-empty svg { width:36px; height:36px; opacity:.35; }

/* ════════════════════ VIEW TABS ══════════════════════════════ */
#drt-root .drt-tabs {
  display: flex;
  gap: 4px;
  padding: 10px 14px 0;
  border-bottom: 1.5px solid var(--drt-border);
  background: var(--drt-surface2);
}
#drt-root .drt-tab {
  padding: 7px 14px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--drt-text3);
  background: transparent;
  border: none;
  border-radius: var(--drt-radius-xs) var(--drt-radius-xs) 0 0;
  cursor: pointer;
  transition: all var(--drt-t) var(--drt-ease);
  position: relative;
}
#drt-root .drt-tab.active {
  color: var(--drt-accent);
  background: var(--drt-surface);
  border: 1.5px solid var(--drt-border);
  border-bottom: 1.5px solid var(--drt-surface);
  margin-bottom: -1.5px;
}
#drt-root .drt-tab:not(.active):hover { color: var(--drt-text2); background: var(--drt-surface3); }

/* ════════════════════ STATUS TOAST ════════════════════════════ */
#drt-root .drt-toast {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--drt-radius-sm);
  font-size: 13px;
  font-weight: 600;
  animation: drtFadeIn .2s var(--drt-ease);
}
#drt-root .drt-toast.ok  { background:var(--drt-ok-dim); color:var(--drt-ok); border:1px solid rgba(22,163,74,.22); display:flex; }
#drt-root .drt-toast.err { background:var(--drt-red-dim); color:var(--drt-red); border:1px solid rgba(220,38,38,.20); display:flex; }
#drt-root .drt-toast svg { width:16px; height:16px; flex-shrink:0; }
@keyframes drtFadeIn { from { opacity:0; transform:translateY(4px); } to { opacity:1; transform:none; } }

/* ════════════════════ RESULT SUMMARY ═════════════════════════ */
#drt-root .drt-result-summary {
  display: none;
  gap: 10px;
  padding: 14px 18px;
  border-bottom: 1.5px solid var(--drt-border);
  flex-wrap: wrap;
  align-items: center;
  background: linear-gradient(135deg, var(--drt-accent-dim), var(--drt-surface));
}
#drt-root .drt-result-summary.visible { display:flex; }
#drt-root .drt-summary-chip {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 700;
}
#drt-root .drt-summary-chip.total  { background:var(--drt-surface3); color:var(--drt-text2); border:1px solid var(--drt-border); }
#drt-root .drt-summary-chip.unique { background:var(--drt-ok-dim); color:var(--drt-ok); border:1px solid rgba(22,163,74,.22); }
#drt-root .drt-summary-chip.removed { background:var(--drt-red-dim); color:var(--drt-red); border:1px solid rgba(220,38,38,.20); }
#drt-root .drt-summary-chip svg { width:13px; height:13px; }

/* ════════════════════ SEO CONTENT ═════════════════════════════ */
#drt-root .drt-seo {
  margin-top: 32px;
  border-top: 1.5px solid var(--drt-border);
  padding-top: 32px;
}
#drt-root .drt-seo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px,1fr));
  gap: 16px;
  margin-bottom: 32px;
}
#drt-root .drt-info-card {
  background: var(--drt-surface);
  border: 1.5px solid var(--drt-border);
  border-radius: var(--drt-radius);
  padding: 20px;
  box-shadow: var(--drt-shadow-sm);
}
#drt-root .drt-info-card-icon {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: var(--drt-accent-dim);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 12px;
}
#drt-root .drt-info-card-icon svg { width:20px; height:20px; color:var(--drt-accent); }
#drt-root .drt-info-card h3 { font-size:14px; font-weight:700; color:var(--drt-text); margin:0 0 6px; }
#drt-root .drt-info-card p  { font-size:13px; color:var(--drt-text2); margin:0; line-height:1.6; }

#drt-root .drt-faq { margin-top: 24px; }
#drt-root .drt-faq h2 { font-size:1.35rem; font-weight:800; color:var(--drt-text); margin:0 0 16px; }
#drt-root .drt-faq-item {
  background: var(--drt-surface);
  border: 1.5px solid var(--drt-border);
  border-radius: var(--drt-radius-sm);
  margin-bottom: 10px;
  overflow: hidden;
}
#drt-root .drt-faq-q {
  width: 100%;
  text-align: left;
  padding: 14px 18px;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--drt-text);
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  cursor: pointer;
  transition: background var(--drt-t) var(--drt-ease);
}
#drt-root .drt-faq-q:hover { background: var(--drt-surface3); }
#drt-root .drt-faq-q svg { width:16px; height:16px; color:var(--drt-accent); flex-shrink:0; transition: transform var(--drt-t) var(--drt-ease); }
#drt-root .drt-faq-item.open .drt-faq-q svg { transform: rotate(45deg); }
#drt-root .drt-faq-a {
  display: none;
  padding: 0 18px 14px;
  font-size: 13px;
  color: var(--drt-text2);
  line-height: 1.65;
  border-top: 1.5px solid var(--drt-border);
}
#drt-root .drt-faq-item.open .drt-faq-a { display: block; }

/* ════════════════════ MOBILE STICKY CTA ═══════════════════════ */
#drt-root .drt-sticky-cta {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 100;
  padding: 12px 16px;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(10px);
  border-top: 1.5px solid var(--drt-border);
  box-shadow: 0 -4px 20px rgba(79,70,229,.10);
}
#drt-root .drt-sticky-cta button { width: 100%; justify-content: center; padding: 14px; font-size: 15px; }
@media (max-width: 640px) { #drt-root .drt-sticky-cta { display: block; } }

/* ════════════════════ RESPONSIVE ═════════════════════════════ */
@media (max-width: 640px) {
  #drt-root .drt-hero { padding: 32px 12px 24px; }
  #drt-root .drt-card-header { gap: 8px; }
  #drt-root .drt-card-actions { gap: 5px; }
  #drt-root .drt-btn { padding: 6px 10px; font-size: 12px; }
  #drt-root .drt-action-bar { padding: 12px; gap: 8px; }
  #drt-root .drt-action-bar .drt-btn { flex: 1; justify-content: center; }
  #drt-root .drt-options { padding: 12px 14px; gap: 12px; }
  #drt-root .drt-textarea { min-height: 200px; font-size: 13px; }
  #drt-root .drt-highlight-wrap { min-height: 200px; font-size: 12.5px; }
}