:root {
  color-scheme: dark;
  --bg: #111827;
  --panel: #182231;
  --panel-2: #202c3d;
  --line: #334155;
  --text: #f8fafc;
  --muted: #a7b4c6;
  --accent: #2dd4bf;
  --accent-2: #f59e0b;
  --bad: #f87171;
  --good: #86efac;
  font-family: "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
}

* { box-sizing: border-box; }
html { overflow-x: hidden; }
body { margin: 0; min-height: 100vh; background: var(--bg); color: var(--text); padding: 24px; width: 100%; overflow-x: hidden; }
button, input, textarea { font: inherit; }
button { height: 40px; border: 0; border-radius: 6px; padding: 0 14px; background: var(--accent); color: #06201d; font-weight: 800; cursor: pointer; }
button:disabled { opacity: .65; cursor: wait; }
input, textarea { width: 100%; border: 1px solid var(--line); border-radius: 6px; background: #0f172a; color: var(--text); padding: 11px 12px; }
textarea { min-height: 132px; resize: vertical; }
h1, h2, p { margin: 0; }
h1 { font-size: clamp(28px, 4vw, 44px); letter-spacing: 0; }
h2 { font-size: 18px; }
.app { width: min(1200px, 100%); margin: 0 auto; display: grid; gap: 16px; }
.shell { width: min(1440px, 100%); margin: 0 auto; display: grid; grid-template-columns: 240px 1fr; gap: 16px; }
.workspace { min-width: 0; display: grid; gap: 16px; }
.sidebar { position: sticky; top: 24px; height: calc(100vh - 48px); border: 1px solid var(--line); border-radius: 8px; background: var(--panel); padding: 16px; display: grid; align-content: start; gap: 8px; }
.sidebar h1 { font-size: 20px; margin-bottom: 10px; }
.nav-button { width: 100%; text-align: left; background: transparent; color: var(--muted); border: 1px solid transparent; }
.nav-button.active, .nav-button:hover { background: var(--panel-2); color: var(--text); border-color: var(--line); }
.view { display: none; gap: 16px; min-width: 0; }
.active-view { display: grid; min-width: 0; }
.result { min-width: 0; }
.topbar, .panel, .notice { border: 1px solid var(--line); border-radius: 8px; background: var(--panel); }
.topbar { display: grid; grid-template-columns: 1fr minmax(320px, 480px); gap: 28px; align-items: center; padding: 28px; }
.eyebrow { color: var(--accent); font-weight: 900; margin-bottom: 8px; }
.lead { color: var(--muted); margin-top: 10px; line-height: 1.6; }
.diagnosis-form { display: grid; gap: 8px; }
.status, .error { min-height: 22px; color: var(--muted); }
.error { color: var(--bad); }
.diagnosis-loader {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(15, 23, 42, 0.72);
  backdrop-filter: blur(6px);
}
.diagnosis-loader[hidden] { display: none; }
.loader-panel {
  width: min(560px, 100%);
  display: grid;
  grid-template-columns: 132px 1fr;
  gap: 18px;
  align-items: center;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 24px 80px rgba(0,0,0,.35);
}
.loader-image {
  width: 132px;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #0f172a;
}
.loader-panel strong { display: block; margin-bottom: 8px; font-size: 18px; }
.loader-panel p { color: var(--muted); line-height: 1.55; margin-bottom: 14px; }
.loader-bar {
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  background: #334155;
}
.loader-bar span {
  display: block;
  width: 42%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  animation: loadingSweep 1.1s ease-in-out infinite;
}
@keyframes loadingSweep {
  0% { transform: translateX(-115%); }
  100% { transform: translateX(260%); }
}
.result { display: grid; gap: 16px; }
.summary-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.summary-card, .metric { background: var(--panel-2); border: 1px solid var(--line); border-radius: 8px; padding: 16px; min-width: 0; }
.summary-card span, .metric span, .mini-status, .panel-head p { color: var(--muted); font-size: 13px; }
.summary-card strong { display: block; margin: 8px 0 4px; font-size: 24px; }
.main-grid { display: grid; grid-template-columns: 360px 1fr; gap: 16px; }
.panel { padding: 20px; }
.grade-panel { display: grid; justify-items: center; text-align: center; gap: 12px; }
.gauge { width: 220px; max-width: 100%; aspect-ratio: 1; border-radius: 50%; display: grid; place-items: center; align-content: center; background: radial-gradient(circle, var(--panel) 58%, transparent 59%), conic-gradient(var(--accent) var(--score-angle, 0deg), #334155 0deg); margin: 0 auto; }
.gauge span { font-size: 64px; font-weight: 900; }
.gauge small { color: var(--muted); }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.score-analysis { display: grid; gap: 12px; }
.score-row { display: grid; grid-template-columns: 150px 1fr 58px; gap: 10px; align-items: center; }
.bar { height: 9px; border-radius: 99px; background: #334155; overflow: hidden; }
.bar span { display: block; height: 100%; background: var(--accent); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.reason-list { margin-top: 12px; color: var(--muted); display: grid; gap: 6px; }
.button-row { display: flex; gap: 8px; }
.widget-grid { display: grid; grid-template-columns: 190px 1fr; gap: 16px; align-items: start; }
.widget-preview { width: 170px; height: 170px; border-radius: 8px; background: #fff; border: 1px solid var(--line); }
.risk-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.risk-card { background: var(--panel-2); border: 1px solid var(--line); border-radius: 8px; padding: 14px; display: grid; gap: 8px; }
.risk-card span { width: fit-content; border-radius: 999px; padding: 3px 9px; font-size: 12px; font-weight: 900; text-transform: uppercase; }
.risk-low span { background: rgba(134,239,172,.18); color: var(--good); }
.risk-medium span { background: rgba(251,191,36,.18); color: #fbbf24; }
.risk-high span { background: rgba(248,113,113,.2); color: var(--bad); }
.post-form { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.inline-action { display: grid; grid-template-columns: 1fr auto; gap: 8px; }
.inline-action button { white-space: nowrap; }
.post-form textarea { grid-column: 1 / -1; min-height: 220px; }
.post-form button, .post-form .error, .post-form .mini-status { grid-column: 1 / -1; }
.check-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.check-list li { border: 1px solid var(--line); border-radius: 8px; background: var(--panel-2); padding: 12px; display: grid; gap: 6px; }
.status-pill { width: fit-content; border-radius: 999px; padding: 3px 9px; font-size: 12px; font-weight: 900; }
.status-pill.good { color: var(--good); background: rgba(134,239,172,.16); }
.status-pill.warning { color: #fbbf24; background: rgba(251,191,36,.16); }
.status-pill.fail { color: var(--bad); background: rgba(248,113,113,.18); }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-list span { border: 1px solid var(--line); border-radius: 999px; padding: 7px 10px; background: var(--panel-2); color: var(--muted); }
.copy-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.copy-card { border: 1px solid var(--line); border-radius: 8px; background: var(--panel-2); padding: 14px; display: grid; gap: 10px; }
.copy-card div { display: flex; justify-content: space-between; gap: 10px; align-items: center; }
.copy-card div span { color: var(--muted); font-size: 13px; }
.copy-card textarea { min-height: 120px; background: #0f172a; }
.index-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.index-card .panel-head strong { font-size: 28px; color: var(--accent); }
.index-items { display: grid; gap: 8px; margin-top: 14px; }
.index-items details { border: 1px solid var(--line); border-radius: 8px; background: var(--panel-2); padding: 10px 12px; }
.index-items summary { cursor: pointer; display: flex; justify-content: space-between; gap: 12px; }
.index-items ul { color: var(--muted); margin: 10px 0 0; padding-left: 18px; display: grid; gap: 4px; }
.improvement-list { display: grid; gap: 10px; }
.improvement-detail { border: 1px solid var(--line); border-radius: 8px; background: var(--panel-2); padding: 12px; }
.improvement-detail summary { cursor: pointer; display: flex; justify-content: space-between; gap: 12px; font-weight: 900; }
.improvement-detail small { color: var(--muted); }
.improvement-detail p { margin-top: 10px; color: var(--muted); line-height: 1.55; }
.improvement-detail textarea { margin-top: 10px; min-height: 92px; background: #0f172a; }
.improvement-detail button { margin-top: 8px; }
.seo-coach-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.seo-card { display: grid; gap: 12px; }
.seo-card-lead { font-size: 20px; font-weight: 900; color: var(--accent); }
.evidence-list, .gap-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.evidence-list li, .gap-list li, .gap-list article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
  padding: 12px;
  display: grid;
  gap: 6px;
}
.gap-list span {
  width: fit-content;
  border-radius: 999px;
  padding: 3px 9px;
  font-size: 12px;
  font-weight: 900;
}
.gap-covered span { color: var(--good); background: rgba(134,239,172,.16); }
.gap-missing span { color: #fbbf24; background: rgba(251,191,36,.16); }
.gap-list p, .gap-list small, .evidence-list li { color: var(--muted); line-height: 1.5; }
.gap-list strong { color: var(--text); }
.compare-metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.compare-metrics div {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
  padding: 12px;
  display: grid;
  gap: 6px;
}
.compare-metrics span { color: var(--muted); font-size: 13px; }
.compare-metrics strong { font-size: 16px; }
.gap-list textarea { min-height: 86px; margin-top: 4px; background: #0f172a; }
.gap-list b { color: var(--text); }
.empty-view { min-height: 300px; align-content: center; }
.table-wrap { width: 100%; max-width: 100%; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 600px; }
th, td { border-bottom: 1px solid var(--line); padding: 12px 10px; text-align: left; vertical-align: top; }
th { color: var(--muted); font-size: 13px; }
a { color: var(--accent); text-decoration: none; }
.notice { padding: 16px 18px; display: flex; gap: 10px; color: var(--muted); line-height: 1.55; }
.notice strong { color: var(--accent-2); white-space: nowrap; }
.settings-form { display: grid; gap: 22px; }
.settings-field { display: grid; gap: 6px; }
.settings-field label { font-weight: 700; }
.field-desc { color: var(--muted); font-size: 13px; margin: 0; }
.settings-actions { display: flex; gap: 10px; margin-top: 4px; }
.btn-secondary { background: var(--panel-2); color: var(--muted); border: 1px solid var(--line); }
.btn-secondary:hover { color: var(--text); border-color: var(--muted); }
.settings-summary { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
@media (max-width: 768px) {
  /* 1열 레이아웃 */
  .shell { grid-template-columns: 1fr; }
  .topbar, .main-grid, .summary-cards, .stats-grid, .risk-grid,
  .post-form, .copy-grid, .index-grid, .seo-coach-grid, .compare-metrics,
  .settings-summary { grid-template-columns: 1fr; }

  /* 사이드바: 세로 메뉴 형태 유지 */
  .sidebar { position: static; height: auto; width: 100%; }

  /* 메뉴 버튼: 세로 배치, 전체 너비 */
  .nav-button { width: 100%; }

  /* 패널/카드 너비 초과 방지 */
  .panel, .summary-card, .metric, .risk-card, .copy-card { min-width: 0; max-width: 100%; }

  /* panel-head, button-row 줄바꿈 */
  .panel-head { flex-wrap: wrap; gap: 8px; }
  .button-row { flex-wrap: wrap; }

  /* 점수행 */
  .score-row { grid-template-columns: 120px 1fr 50px; }
}

@media (max-width: 480px) {
  body { padding: 12px; }
  .topbar, .panel { padding: 14px; }
  .gauge { width: 160px; }
  .gauge span { font-size: 48px; }
  .score-row, .widget-grid { grid-template-columns: 1fr; }
  .panel-head { display: grid; }
  .loader-panel { grid-template-columns: 1fr; text-align: center; }
  .loader-image { margin: 0 auto; }
}