/* ==========================================================
   이슈만타 — 디자인 토큰
   종이 위의 데이터. UI는 무채색으로 절제하고,
   색은 데이터(감성)와 브랜드(만타 블루)에만 허락한다.
   ========================================================== */
:root {
  --paper: #fafaf9;
  --ink: #20242e;
  --fog: #8b909c;
  --line: #e3e3de;
  --rise: #1e9e5a;
  --fall: #d93843;
  --manta: #2c4bff;
  --font-sans: "IBM Plex Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 48px 20px 64px;
}

/* ---------- 헤더 ---------- */
.site-head { text-align: center; margin-bottom: 36px; }

.logo {
  font-size: clamp(2.2rem, 6vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.logo-accent {
  color: var(--manta);
  position: relative;
}
/* 시그니처: 만타의 유영 — 로고 밑 물결 획 */
.logo-accent::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 8px;
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="80" height="8" viewBox="0 0 80 8"><path d="M0 4 Q10 0 20 4 T40 4 T60 4 T80 4" fill="none" stroke="%232c4bff" stroke-width="2" stroke-linecap="round" opacity="0.55"/></svg>') repeat-x;
  background-size: 40px 8px;
}

.tagline {
  margin-top: 14px;
  color: var(--fog);
  font-size: 0.95rem;
}

/* ---------- 검색 ---------- */
.search {
  display: flex;
  gap: 10px;
  align-items: stretch;
  flex-wrap: wrap;
}

#keyword {
  flex: 1 1 260px;
  font: inherit;
  padding: 13px 16px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
}
#keyword:focus-visible {
  outline: 2px solid var(--manta);
  outline-offset: 1px;
  border-color: transparent;
}

.lang {
  display: flex;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
}
.lang label { display: flex; cursor: pointer; }
.lang input { position: absolute; opacity: 0; }
.lang span {
  padding: 13px 16px;
  font-size: 0.9rem;
  color: var(--fog);
  user-select: none;
}
.lang input:checked + span {
  background: var(--ink);
  color: #fff;
}
.lang input:focus-visible + span {
  outline: 2px solid var(--manta);
  outline-offset: -2px;
}

.search button[type="submit"] {
  font: inherit;
  font-weight: 600;
  padding: 13px 26px;
  border: none;
  border-radius: 10px;
  background: var(--manta);
  color: #fff;
  cursor: pointer;
}
.search button[type="submit"]:hover { filter: brightness(1.08); }
.search button[type="submit"]:disabled { opacity: 0.55; cursor: wait; }
.search button[type="submit"]:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }

#status {
  min-height: 1.5em;
  margin-top: 12px;
  font-size: 0.88rem;
  color: var(--fog);
}
#status.error { color: var(--fall); }

/* ---------- 빈 상태 ---------- */
.empty {
  margin-top: 28px;
  padding: 72px 24px;
  text-align: center;
  border: 1.5px dashed var(--line);
  border-radius: 14px;
  color: var(--fog);
}
.demo-link {
  margin-top: 14px;
  font: inherit;
  font-size: 0.9rem;
  color: var(--manta);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.demo-link:focus-visible { outline: 2px solid var(--manta); outline-offset: 2px; border-radius: 4px; }

/* ---------- 결과: 이슈 온도 (시그니처) ---------- */
.result-head { margin-top: 36px; }
#result-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.gauge {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 16px;
}
.gauge-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--fog);
  white-space: nowrap;
}
.gauge-track {
  position: relative;
  flex: 1;
  height: 6px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--fall), var(--fog) 50%, var(--rise));
  opacity: 0.9;
}
.gauge-marker {
  position: absolute;
  top: 50%;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2.5px solid var(--paper);
  box-shadow: 0 1px 4px rgba(32, 36, 46, 0.35);
  transform: translate(-50%, -50%);
  transition: left 0.5s ease;
}
.gauge-value {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 1rem;
  min-width: 3.2em;
  text-align: right;
}
.gauge-note {
  margin-top: 6px;
  font-size: 0.78rem;
  color: var(--fog);
}

@media (prefers-reduced-motion: reduce) {
  .gauge-marker { transition: none; }
}

/* ---------- 캔버스 ---------- */
.canvas-frame {
  margin-top: 20px;
  border: 1.5px solid var(--line);
  border-radius: 14px;
  background: #fff;
  padding: 8px;
}
#cloud { display: block; width: 100%; }

.legend {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  font-size: 0.8rem;
}
.chip { font-weight: 600; }
.chip.neg { color: var(--fall); }
.chip.neu { color: var(--fog); }
.chip.pos { color: var(--rise); }
.legend-note { margin-left: auto; color: var(--fog); }

/* ---------- 테이블 ---------- */
#word-table {
  width: 100%;
  margin-top: 28px;
  border-collapse: collapse;
  font-size: 0.92rem;
}
#word-table caption {
  text-align: left;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--fog);
  padding-bottom: 8px;
}
#word-table th, #word-table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}
#word-table th {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--fog);
}
#word-table .num {
  text-align: right;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
#word-table tbody tr:hover { background: rgba(44, 75, 255, 0.04); }

/* ---------- 푸터 ---------- */
.site-foot {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 0.75rem;
  color: var(--fog);
  text-align: center;
}

@media (max-width: 560px) {
  .wrap { padding-top: 32px; }
  .search button[type="submit"] { flex: 1 1 100%; }
  .gauge { flex-wrap: wrap; }
}