/* ===================================================
   네이버 블로그 재작성 AI — Main Stylesheet
   =================================================== */

/* ─── CSS Variables ─── */
:root {
  --green:       #03C75A;
  --green-dark:  #02a84b;
  --green-light: #e6faf0;
  --blue:        #2563eb;
  --blue-light:  #eff6ff;
  --red:         #ef4444;
  --purple:      #7c3aed;
  --orange:      #f59e0b;
  --white:       #ffffff;
  --gray-50:     #f8fafc;
  --gray-100:    #f1f5f9;
  --gray-200:    #e2e8f0;
  --gray-300:    #cbd5e1;
  --gray-400:    #94a3b8;
  --gray-500:    #64748b;
  --gray-600:    #475569;
  --gray-700:    #334155;
  --gray-800:    #1e293b;
  --gray-900:    #0f172a;
  --font:        'Noto Sans KR', 'Apple SD Gothic Neo', sans-serif;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow-md:   0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:   0 10px 40px rgba(0,0,0,.14);
  --radius:      12px;
  --radius-sm:   8px;
  --radius-xs:   4px;
  --transition:  .18s ease;
}

/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--gray-50);
  color: var(--gray-800);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
}
a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; }
button { cursor: pointer; font-family: var(--font); }
ul { list-style: none; }
hr.divider {
  border: none;
  border-top: 1px solid var(--gray-200);
  margin: 20px 0;
}

/* ─── Toast ─── */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--gray-900);
  color: var(--white);
  padding: 12px 24px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 500;
  z-index: 9999;
  opacity: 0;
  transition: all .3s cubic-bezier(.34,1.56,.64,1);
  white-space: nowrap;
  pointer-events: none;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ─── Header ─── */
.site-header {
  background: var(--white);
  border-bottom: 2px solid var(--green);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 500;
}
.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 16px;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--green) 0%, #00a550 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 20px;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(3,199,90,.35);
}
.logo-text h1 {
  font-size: 17px;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.2;
}
.logo-text p {
  font-size: 11px;
  color: var(--gray-500);
  margin-top: 2px;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-600);
  background: transparent;
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
}
.nav-btn:hover, .nav-btn.active {
  background: var(--green-light);
  color: var(--green-dark);
  border-color: var(--green);
  text-decoration: none;
}
button.nav-btn { background: transparent; }
button.nav-btn:hover { background: var(--green-light); color: var(--green-dark); border-color: var(--green); }

/* ─── Main Layout ─── */
.main-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

/* ─── Panels ─── */
.panel {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.panel-title {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 20px;
  background: linear-gradient(90deg, var(--gray-50) 0%, var(--white) 100%);
  border-bottom: 1px solid var(--gray-200);
  font-size: 15px;
  font-weight: 700;
  color: var(--gray-800);
  /* sticky 제거 — 글자 가림 방지 */
  position: relative;
  z-index: 1;
}
.panel-title > i { color: var(--green); font-size: 16px; }
.output-actions-top {
  margin-left: auto;
  display: flex;
  gap: 6px;
}
.input-panel .form-group,
.input-panel > button,
.input-panel > hr { padding: 0 20px; }
.input-panel > .form-group { padding: 14px 20px; }
.input-panel > .btn-rewrite { margin: 8px 20px 20px; width: calc(100% - 40px); }

/* ─── Form Elements ─── */
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 8px;
}
.form-label > i { color: var(--green); margin-right: 4px; }
.form-input {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--font);
  color: var(--gray-800);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(3,199,90,.12);
}
.form-hint {
  font-size: 12px;
  color: var(--gray-500);
  margin-top: 6px;
  display: flex;
  align-items: flex-start;
  gap: 5px;
}
.form-hint i { color: var(--blue); margin-top: 2px; flex-shrink: 0; }

/* ─── Textarea ─── */
.textarea-wrap { position: relative; }
.big-textarea {
  width: 100%;
  min-height: 200px;
  padding: 12px 14px 32px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--font);
  color: var(--gray-800);
  resize: vertical;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  line-height: 1.7;
}
.big-textarea:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(3,199,90,.12);
}
.big-textarea::placeholder { color: var(--gray-400); line-height: 1.8; }
.char-counter {
  font-size: 12px;
  color: var(--gray-400);
  text-align: right;
  padding: 4px 0 0;
}
.char-counter strong { color: var(--green); font-weight: 700; }
.result-counter { color: var(--gray-600); font-size: 13px; }
.result-counter strong { color: var(--green); }

/* ─── Badges ─── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 50px;
  font-size: 11px;
  font-weight: 600;
}
.badge-required { background: #fee2e2; color: var(--red); }
.badge-optional  { background: #eff6ff; color: var(--blue); }

/* ─── Tag Input ─── */
.tag-input-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 10px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  cursor: text;
  transition: border-color var(--transition), box-shadow var(--transition);
  min-height: 44px;
  align-items: center;
}
.tag-input-wrap:focus-within {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(3,199,90,.12);
}
.tag-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px 3px 10px;
  background: var(--green-light);
  color: var(--green-dark);
  border-radius: 50px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid #b6f0d3;
}
.tag-item button {
  background: none;
  border: none;
  color: var(--green-dark);
  font-size: 11px;
  padding: 0;
  line-height: 1;
  opacity: .7;
}
.tag-item button:hover { opacity: 1; }
.tag-input {
  border: none;
  outline: none;
  font-size: 13px;
  font-family: var(--font);
  flex: 1;
  min-width: 120px;
  color: var(--gray-800);
  background: transparent;
}

/* ─── Version Pro Only ─── */
.version-pro-only {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: linear-gradient(135deg, #fffbeb 0%, #fef9ec 100%);
  border: 2px solid #f59e0b;
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 8px rgba(245,158,11,.15);
}
.version-pro-only .version-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}
.version-pro-info {
  flex: 1;
}
.version-pro-info strong {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: 6px;
}
.version-pro-info ul li {
  font-size: 12px;
  color: var(--gray-600);
  margin-bottom: 3px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.version-pro-info ul li i.fa-check { color: var(--green); font-size: 10px; }
/* 구 버전 카드 스타일 (호환) */
.version-cards { display: none; }
.version-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 50px;
  font-size: 11px;
  font-weight: 700;
  margin-bottom: 6px;
}
.version-badge.free { background: #e0f2fe; color: #0369a1; }
.version-badge.pro  { background: #fef3c7; color: #b45309; }

/* ─── Slider ─── */
.slider-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}
.slider-min, .slider-max {
  font-size: 11px;
  color: var(--gray-500);
  white-space: nowrap;
}
.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 50px;
  background: linear-gradient(to right, var(--green) 0%, var(--green) 70%, var(--gray-200) 70%, var(--gray-200) 100%);
  outline: none;
  cursor: pointer;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--white);
  border: 2.5px solid var(--green);
  box-shadow: 0 2px 6px rgba(3,199,90,.3);
  cursor: pointer;
  transition: transform var(--transition);
}
.slider::-webkit-slider-thumb:hover { transform: scale(1.15); }
.slider-value {
  margin-left: auto;
  font-size: 13px;
  font-weight: 700;
  color: var(--green-dark);
  background: var(--green-light);
  padding: 2px 10px;
  border-radius: 50px;
  border: 1px solid #b6f0d3;
}

/* ─── Style Cards ─── */
.style-select-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.style-card {
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 16px 12px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-sm);
  text-align: center;
  transition: all var(--transition);
  background: var(--white);
}
.style-card input[type="radio"] { display: none; }
.style-card i {
  font-size: 22px;
  color: var(--gray-400);
  transition: color var(--transition);
}
.style-card strong {
  font-size: 13px;
  font-weight: 700;
  color: var(--gray-700);
}
.style-card small {
  font-size: 11px;
  color: var(--gray-400);
}
.style-card:has(input:checked),
.style-card.active {
  border-color: var(--green);
  background: var(--green-light);
}
.style-card:has(input:checked) i,
.style-card.active i { color: var(--green); }
.style-card:hover { border-color: var(--green); }

/* ─── Toggle Switch ─── */
.toggle-switch {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  width: fit-content;
}
.toggle-switch input { display: none; }
.toggle-slider {
  position: relative;
  width: 44px;
  height: 24px;
  background: var(--gray-300);
  border-radius: 50px;
  transition: background var(--transition);
  flex-shrink: 0;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  background: var(--white);
  border-radius: 50%;
  transition: transform var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,.2);
}
.toggle-switch input:checked + .toggle-slider { background: var(--green); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(20px); }
.toggle-label { font-size: 13px; color: var(--gray-700); font-weight: 500; }

/* ─── Plagiarism Bar (legacy 호환) ─── */
.plagiarism-display { display: none; }

/* ─── Plagiarism Slider ─── */
.plagiarism-value {
  background: #fef3c7 !important;
  color: #b45309 !important;
  border-color: #fde68a !important;
}
.slider-plagiarism {
  /* 색상은 JS에서 동적으로 설정 */
}
.plagiarism-level-bar {
  margin-top: 8px;
  height: 8px;
  background: var(--gray-200);
  border-radius: 50px;
  overflow: hidden;
  position: relative;
}
.plagiarism-level-fill {
  height: 100%;
  border-radius: 50px;
  transition: width .4s ease, background .4s ease;
}

/* ─── Rewrite Button ─── */
.btn-rewrite {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--green) 0%, #00a550 100%);
  color: var(--white);
  font-size: 16px;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  box-shadow: 0 4px 14px rgba(3,199,90,.35);
}
.btn-rewrite:hover {
  background: linear-gradient(135deg, var(--green-dark) 0%, #008c44 100%);
  box-shadow: 0 6px 20px rgba(3,199,90,.45);
  transform: translateY(-1px);
}
.btn-rewrite:active { transform: translateY(0); }
.btn-rewrite:disabled {
  background: var(--gray-300);
  color: var(--gray-500);
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* ─── Icon Buttons ─── */
.btn-icon {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  border: 1px solid var(--gray-200);
  border-radius: 50px;
  font-size: 12px;
  font-weight: 500;
  color: var(--gray-600);
  background: var(--white);
  transition: all var(--transition);
}
.btn-icon:hover {
  background: var(--blue-light);
  color: var(--blue);
  border-color: var(--blue);
}
.btn-icon.active {
  background: var(--blue-light);
  color: var(--blue);
  border-color: var(--blue);
}

/* ─── Empty / Loading ─── */
.empty-output {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--gray-400);
  gap: 14px;
  text-align: center;
}
.empty-output i { font-size: 52px; color: var(--gray-300); }
.empty-output p { font-size: 14px; color: var(--gray-400); line-height: 1.7; }
.empty-output strong { color: var(--green); }

/* ─── Loading ─── */
.loading-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 20px;
  gap: 24px;
}
.loading-spinner {
  position: relative;
  width: 70px;
  height: 70px;
}
.spinner-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 3px solid transparent;
  animation: spin 1.2s linear infinite;
}
.spinner-ring:nth-child(1) {
  border-top-color: var(--green);
  animation-duration: 1.2s;
}
.spinner-ring:nth-child(2) {
  inset: 10px;
  border-top-color: var(--blue);
  animation-duration: .9s;
  animation-direction: reverse;
}
.spinner-ring:nth-child(3) {
  inset: 20px;
  border-top-color: var(--purple);
  animation-duration: .6s;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-steps { width: 100%; max-width: 360px; display: flex; flex-direction: column; gap: 8px; }
.loading-step {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--gray-400);
  transition: all .3s ease;
}
.loading-step.active {
  background: var(--green-light);
  color: var(--green-dark);
  font-weight: 600;
}
.loading-step.done {
  color: var(--green-dark);
  opacity: .6;
}
.loading-step.done::after { content: ' ✓'; color: var(--green); }
.loading-progress-wrap { width: 100%; max-width: 360px; display: flex; align-items: center; gap: 12px; }
.loading-progress-bar {
  flex: 1;
  height: 8px;
  background: var(--gray-200);
  border-radius: 50px;
  overflow: hidden;
}
.loading-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--green) 0%, #00c853 100%);
  border-radius: 50px;
  width: 0%;
  transition: width .4s ease;
}
.loading-percent { font-size: 13px; font-weight: 700; color: var(--green-dark); width: 36px; }

/* ─── Result Area ─── */
.result-area { padding: 16px 20px; }
.result-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  flex-wrap: wrap;
  gap: 8px;
}
.keyword-count {
  font-size: 12px;
  font-weight: 600;
  background: #fef3c7;
  color: #b45309;
  padding: 3px 10px;
  border-radius: 50px;
  border: 1px solid #fde68a;
}
.result-text {
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--gray-800);
  max-height: 380px;
  overflow-y: auto;
  white-space: pre-wrap;
  background: var(--gray-50);
}
.result-text b, .result-text strong {
  color: var(--purple);
  font-weight: 700;
}

/* ─── Checklist ─── */
.checklist-area { padding: 0 20px 16px; }
.checklist-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--gray-700);
  margin-bottom: 10px;
}
.checklist-title i { color: var(--green); }
.checklist-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.checklist-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  font-weight: 500;
  transition: all var(--transition);
}
.checklist-item.pass {
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
}
.checklist-item.fail {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}
.checklist-item i { font-size: 14px; flex-shrink: 0; }
.checklist-item.pass i { color: #16a34a; }
.checklist-item.fail i { color: var(--red); }

/* ─── Output Action Buttons ─── */
.output-actions {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 8px;
  padding: 0 20px 20px;
}
.btn-action {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 8px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font);
  transition: all var(--transition);
}
.btn-regen   { background: var(--blue-light); color: var(--blue); }
.btn-copy    { background: var(--green-light); color: var(--green-dark); }
.btn-download{ background: #fef3c7; color: #b45309; }
.btn-partial { background: #f3e8ff; color: var(--purple); }
.btn-action:hover { filter: brightness(.94); transform: translateY(-1px); box-shadow: var(--shadow-sm); }

/* ─── Compare Area ─── */
.compare-area {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-bottom: 1px solid var(--gray-200);
}
.compare-col { border-right: 1px solid var(--gray-200); }
.compare-col:last-child { border-right: none; }
.compare-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  background: var(--gray-100);
  border-bottom: 1px solid var(--gray-200);
  font-size: 12px;
  font-weight: 700;
  color: var(--gray-600);
}
.compare-header.result-header { background: var(--green-light); color: var(--green-dark); }
.compare-content {
  padding: 14px 16px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--gray-700);
  max-height: 300px;
  overflow-y: auto;
  white-space: pre-wrap;
}

/* ─── Explain Area ─── */
.explain-area {
  margin: 0 20px 16px;
  background: var(--blue-light);
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.explain-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: #dbeafe;
  font-size: 13px;
  font-weight: 700;
  color: var(--blue);
}
.explain-header i { flex: 1 0 auto; }
.close-btn-sm {
  background: none;
  border: none;
  color: var(--gray-500);
  font-size: 14px;
  margin-left: auto;
  padding: 2px;
}
.close-btn-sm:hover { color: var(--gray-800); }
.explain-content {
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--gray-700);
}
.explain-content ul { padding-left: 16px; list-style: disc; }
.explain-content li { margin-bottom: 4px; }

/* ─── History Panel ─── */
.history-panel {
  position: fixed;
  top: 68px;
  right: -360px;
  width: 340px;
  height: calc(100vh - 68px);
  background: var(--white);
  box-shadow: var(--shadow-lg);
  z-index: 600;
  transition: right .3s ease;
  display: flex;
  flex-direction: column;
  border-left: 2px solid var(--green);
}
.history-panel.open { right: 0; }
.history-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.3);
  z-index: 590;
  display: none;
}
.history-overlay.show { display: block; }
.history-header {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-200);
  gap: 8px;
}
.history-header h3 { font-size: 14px; font-weight: 700; color: var(--gray-800); flex: 1; }
.history-header h3 i { color: var(--green); margin-right: 4px; }
.close-btn {
  background: none;
  border: none;
  font-size: 16px;
  color: var(--gray-400);
  padding: 4px;
  border-radius: var(--radius-xs);
}
.close-btn:hover { color: var(--gray-800); background: var(--gray-100); }
.history-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.empty-msg { font-size: 13px; color: var(--gray-400); text-align: center; padding: 20px; }
.history-item {
  padding: 12px 14px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  background: var(--white);
}
.history-item:hover {
  border-color: var(--green);
  background: var(--green-light);
}
.history-item-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.history-item-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.history-item-meta span {
  font-size: 11px;
  color: var(--gray-500);
  background: var(--gray-100);
  padding: 2px 7px;
  border-radius: 50px;
}
.history-item-meta .meta-kw {
  background: var(--green-light);
  color: var(--green-dark);
}
.history-item-del {
  float: right;
  font-size: 11px;
  color: var(--gray-400);
  border: none;
  background: none;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
}
.history-item-del:hover { background: #fee2e2; color: var(--red); }

/* ─── Partial Modal ─── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 500px;
  overflow: hidden;
}
.modal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 20px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
}
.modal-header h3 { font-size: 15px; font-weight: 700; color: var(--gray-800); flex: 1; }
.modal-body { padding: 20px; }
.modal-footer {
  display: flex;
  gap: 8px;
  padding: 16px 20px;
  border-top: 1px solid var(--gray-200);
  justify-content: flex-end;
}
.section-select { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.section-btn {
  padding: 6px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: 50px;
  font-size: 12px;
  font-weight: 500;
  background: var(--white);
  color: var(--gray-700);
  cursor: pointer;
  transition: all var(--transition);
}
.section-btn.selected {
  border-color: var(--green);
  background: var(--green-light);
  color: var(--green-dark);
}
.section-btn:hover { border-color: var(--green); }

/* ─── Footer ─── */
.site-footer {
  text-align: center;
  padding: 20px;
  font-size: 12px;
  color: var(--gray-400);
  border-top: 1px solid var(--gray-200);
  margin-top: 24px;
  background: var(--white);
}
.site-footer a { color: var(--green); }

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--gray-100); border-radius: 3px; }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }

/* ─── Responsive ─── */
@media (max-width: 1024px) {
  .main-container { grid-template-columns: 1fr; }
  .checklist-grid { grid-template-columns: 1fr 1fr; }
  .output-actions { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .header-inner { height: auto; padding: 12px 16px; flex-wrap: wrap; }
  .header-nav { width: 100%; justify-content: flex-end; }
  .main-container { padding: 12px; gap: 16px; }
  .version-cards { grid-template-columns: 1fr; }
  .style-select-wrap { grid-template-columns: 1fr; }
  .checklist-grid { grid-template-columns: 1fr; }
  .output-actions { grid-template-columns: 1fr 1fr; }
  .compare-area { grid-template-columns: 1fr; }
  .modal { max-width: 100%; margin: 8px; }
  .panel-title { top: auto; position: relative; }
  .logo-text p { display: none; }
  .version-pro-only { flex-direction: column; align-items: flex-start; }
  .api-banner { flex-direction: column; align-items: flex-start; gap: 8px; }
  .model-select-grid { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════════════════════════
   API 키 관련 UI
   ═══════════════════════════════════════════════════════ */

/* ─── 상태 점 ─── */
.nav-apikey-btn { position: relative; }
.api-status-dot {
  position: absolute;
  top: 4px;
  right: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1.5px solid var(--white);
}
.api-status-dot.connected    { background: var(--green); }
.api-status-dot.disconnected { background: var(--red);   }

/* ─── 경고 배너 ─── */
.api-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  background: #fffbeb;
  border-bottom: 1px solid #fde68a;
  color: #92400e;
  font-size: 13px;
  font-weight: 500;
}
.api-banner i { color: var(--orange); flex-shrink: 0; font-size: 15px; }
.api-banner span { flex: 1; }
.api-banner-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--orange);
  color: var(--white);
  border: none;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--transition);
  font-family: var(--font);
}
.api-banner-btn:hover { background: #d97706; }
.api-banner-close {
  background: none;
  border: none;
  color: #b45309;
  font-size: 14px;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-xs);
  flex-shrink: 0;
  font-family: var(--font);
}
.api-banner-close:hover { background: #fde68a; }

/* ─── API 키 모달 ─── */
.api-key-modal { max-width: 540px; }

.apikey-guide-box {
  background: var(--blue-light);
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}
.apikey-guide-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 6px;
}
.apikey-guide-box p {
  font-size: 13px;
  color: #1e40af;
  line-height: 1.7;
}
.apikey-guide-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--blue);
  text-decoration: underline;
}

/* ─── 키 입력창 래퍼 ─── */
.apikey-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.apikey-input-wrap .form-input {
  padding-right: 44px;
  font-family: 'Courier New', monospace;
  font-size: 13px;
}
.apikey-toggle-btn {
  position: absolute;
  right: 10px;
  background: none;
  border: none;
  color: var(--gray-400);
  font-size: 15px;
  cursor: pointer;
  padding: 4px;
  transition: color var(--transition);
}
.apikey-toggle-btn:hover { color: var(--gray-700); }

/* ─── 모델 선택 ─── */
.model-select-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 6px;
}
.model-card { cursor: pointer; }
.model-card input[type="radio"] { display: none; }
.model-card-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 12px 8px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-sm);
  text-align: center;
  transition: all var(--transition);
  background: var(--white);
}
.model-card:has(input:checked) .model-card-inner {
  border-color: var(--green);
  background: var(--green-light);
}
.model-card:hover .model-card-inner { border-color: var(--green); }
.model-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 50px;
  font-size: 10px;
  font-weight: 700;
  margin-bottom: 2px;
}
.model-badge.fast    { background: #e0f2fe; color: #0369a1; }
.model-badge.best    { background: var(--green-light); color: var(--green-dark); }
.model-badge.premium { background: #fef3c7; color: #b45309; }
.model-card-inner strong {
  font-size: 12px;
  font-weight: 700;
  color: var(--gray-800);
  word-break: break-all;
}
.model-card-inner small {
  font-size: 11px;
  color: var(--gray-500);
  line-height: 1.4;
}
.model-price {
  font-size: 11px;
  font-weight: 700;
  color: var(--green-dark);
  margin-top: 2px;
}

/* ─── 저장 위치 안내 ─── */
.apikey-storage-info {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  color: var(--gray-600);
  line-height: 1.7;
  margin-top: 14px;
}
.apikey-storage-info i {
  color: var(--green);
  font-size: 16px;
  flex-shrink: 0;
  margin-top: 2px;
}
.apikey-storage-info strong { color: var(--gray-800); }

/* ─── 추가: form-group 내 divider 여백 ─── */
.input-panel .divider { margin: 4px 0; }

/* ─── form-hint 아이콘 색상 ─── */
.form-hint strong { color: var(--gray-700); }

/* ═══════════════════════════════════════════════════════
   v3.0 신규 UI 요소
   ═══════════════════════════════════════════════════════ */

/* ─── 프리미엄 배지 (패널 타이틀용) ─── */
.version-pro-badge {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  background: linear-gradient(135deg,#fef3c7,#fde68a);
  color: #b45309;
  border-radius: 50px;
  font-size: 11px;
  font-weight: 700;
  border: 1px solid #fcd34d;
}

/* ─── 글자수 목표 정보 행 ─── */
.char-target-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
  font-size: 12px;
  color: var(--gray-500);
  flex-wrap: wrap;
  gap: 6px;
}
.char-target-info strong { color: var(--gray-700); }
.morpheme-target-info {
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
  border-radius: 50px;
  padding: 2px 10px;
  font-size: 11.5px;
  font-weight: 500;
}
.morpheme-target-info strong { color: #15803d; }

/* ─── 글쓰기 스타일 (5종 — 3열 그리드) ─── */
.style-select-wrap {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}
.style-card {
  padding: 12px 6px;
}
.style-card strong { font-size: 12px; }
.style-card small  { font-size: 10px; }

/* ─── 자동 재생성 안내 ─── */
.auto-retry-info {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: #166534;
}
.auto-retry-info strong { color: #15803d; }

/* ─── 재시도 카운터 (로딩 중) ─── */
.retry-counter {
  background: #fef3c7;
  color: #b45309;
  border: 1px solid #fde68a;
  border-radius: 50px;
  padding: 4px 16px;
  font-size: 12px;
  font-weight: 700;
  text-align: center;
}

/* ─── Empty Output 스펙 목록 ─── */
.empty-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 16px;
  margin-top: 8px;
  text-align: left;
}
.spec-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--gray-500);
}
.spec-item i { color: var(--green); font-size: 10px; flex-shrink: 0; }

/* ─── 결과 메타 (글자수 + 형태소 + 품질점수) ─── */
.result-meta-left {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* ─── 형태소 배지 ─── */
.morpheme-badge {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 10px;
  border-radius: 50px;
  font-size: 11px;
  font-weight: 600;
  border: 1px solid;
}
.morpheme-badge.pass {
  background: #f0fdf4;
  color: #166534;
  border-color: #bbf7d0;
}
.morpheme-badge.fail {
  background: #fef2f2;
  color: #991b1b;
  border-color: #fecaca;
}

/* ─── 품질 점수 원형 ─── */
.quality-score-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}
.quality-score-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 3px solid;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.quality-score-num {
  font-size: 18px;
  font-weight: 800;
  line-height: 1;
}
.quality-score-denom {
  font-size: 9px;
  font-weight: 500;
  opacity: .7;
}
.quality-score-label {
  font-size: 11px;
  font-weight: 700;
}

/* ─── 체크리스트 개선 (헤더 + 팁) ─── */
.checklist-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.checklist-item {
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}
.checklist-header {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
}
.checklist-label {
  flex: 1;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
}
.checklist-value {
  font-size: 11px;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: 50px;
  white-space: nowrap;
}
.checklist-value.pass {
  background: #dcfce7;
  color: #15803d;
}
.checklist-value.fail {
  background: #fee2e2;
  color: #dc2626;
}
.checklist-tip {
  font-size: 11px;
  color: #991b1b;
  padding-left: 22px;
  line-height: 1.4;
  opacity: .85;
}

/* ─── 반응형 수정 ─── */
@media (max-width: 1024px) {
  .style-select-wrap { grid-template-columns: repeat(3, 1fr); }
  .checklist-grid    { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .style-select-wrap { grid-template-columns: repeat(3, 1fr); }
  .checklist-grid    { grid-template-columns: 1fr; }
  .empty-specs       { grid-template-columns: 1fr; }
  .result-meta       { flex-direction: column; align-items: flex-start; }
  .quality-score-wrap{ flex-direction: row; align-items: center; gap: 8px; }
  .char-range-inputs { flex-wrap: wrap; }
  .range-apply-btn   { width: 100%; }
}

/* ═══════════════════════════════════════════════════════
   글자수 범위 직접 입력 UI
   ═══════════════════════════════════════════════════════ */
.char-range-inputs {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.range-input-group {
  display: flex;
  align-items: center;
  gap: 5px;
}
.range-input-label {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--gray-500);
  white-space: nowrap;
}
.range-input {
  width: 90px;
  padding: 6px 10px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: var(--font);
  color: var(--gray-800);
  background: var(--white);
  transition: border-color var(--transition);
  text-align: center;
}
.range-input:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 2px rgba(3,199,90,.12);
}
.range-unit {
  font-size: 12px;
  color: var(--gray-500);
}
.range-dash {
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-400);
  padding: 0 2px;
}
.range-apply-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  background: var(--green);
  color: var(--white);
  border: none;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  font-family: var(--font);
  white-space: nowrap;
}
.range-apply-btn:hover  { background: var(--green-dark); transform: translateY(-1px); }
.range-apply-btn:active { transform: translateY(0); }

/* ─── 슬라이더 min/max 레이블 ─── */
.slider-min, .slider-max {
  font-size: 11px;
  color: var(--gray-400);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ─── 형태소 비율 슬라이더 ─── */
#morphemeRatioSlider {
  /* 기본 .slider 스타일 상속, 파란 계열로 덮어씀 */
  accent-color: #2563eb;
}
#morphemeRatioSlider::-webkit-slider-thumb {
  background: var(--white);
  border: 2px solid #2563eb;
}
#morphemeRatioSlider::-moz-range-thumb {
  background: var(--white);
  border: 2px solid #2563eb;
}