/* =====================================================================
   세종데이터인사이트 — 메인 스타일
   디자인 방향: 공공 데이터 플랫폼의 신뢰감.
   딥 네이비(행정·신뢰) + 청록 데이터 액센트 + 정밀한 여백·hairline.
   ===================================================================== */
:root{
  --navy:#0f2a4a;          /* 딥 네이비 (주조색) */
  --navy-700:#1b3a60;
  --accent:#0e8a8a;        /* 청록 데이터 액센트 */
  --accent-soft:#e3f1f1;
  --ink:#16202b;           /* 본문 */
  --muted:#5b6b7b;         /* 보조 텍스트 */
  --line:#dfe5ec;          /* hairline */
  --paper:#ffffff;
  --bg:#f5f7fa;            /* 페이지 배경 */
  --gold:#b8893b;          /* 강조 포인트(절제) */
  --radius:14px;
  --maxw:1120px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'IBM Plex Sans KR',system-ui,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
a{color:inherit;text-decoration:none}

/* ---------- 헤더 / 네비 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:32px;height:72px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{display:flex}
.brand-text strong{display:block;font-size:18px;color:var(--navy);letter-spacing:-.02em}
.brand-text em{display:block;font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.18em;text-transform:uppercase}
.main-nav{display:flex;gap:28px;margin-left:8px}
.main-nav a{font-size:15px;color:var(--ink);font-weight:500;position:relative;padding:4px 0}
.main-nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--accent);transition:width .25s}
.main-nav a:hover::after{width:100%}
.auth-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.auth-hello{font-size:13px;color:var(--muted);margin-right:4px;text-decoration:none}
.auth-hello:hover{color:var(--accent);text-decoration:underline}

/* ---------- 버튼 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:600;padding:9px 18px;border-radius:9px;
  border:1px solid transparent;cursor:pointer;transition:.18s;white-space:nowrap}
.btn-solid{background:var(--navy);color:#fff}
.btn-solid:hover{background:var(--navy-700)}
.btn-ghost{background:transparent;color:var(--navy);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--navy);background:#fff}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#0a7575}
.btn-lg{padding:13px 26px;font-size:15px}
.btn-block{width:100%}

/* ---------- 히어로 ---------- */
.hero{
  background:linear-gradient(160deg,var(--navy) 0%,#0b2240 55%,#0a1c33 100%);
  color:#eaf1f8;position:relative;overflow:hidden;
}
.hero::before{ /* 데이터 그리드 질감 */
  content:"";position:absolute;inset:0;opacity:.10;
  background-image:linear-gradient(var(--accent) 1px,transparent 1px),
                   linear-gradient(90deg,var(--accent) 1px,transparent 1px);
  background-size:42px 42px;mask-image:radial-gradient(circle at 70% 30%,#000,transparent 75%);
}
.hero-inner{position:relative;padding:84px 24px 72px;max-width:var(--maxw);margin:0 auto}
.hero .eyebrow{font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:#7fd3d3;font-weight:600}
.hero h1{font-family:'Gowun Batang',serif;font-weight:700;font-size:clamp(30px,4.6vw,52px);
  line-height:1.25;margin:14px 0 18px;letter-spacing:-.01em}
.hero h1 .hl{color:#7fd3d3}
.hero .lead{max-width:640px;font-size:17px;color:#c4d3e3}
.hero .en{margin-top:6px;font-size:13px;letter-spacing:.06em;color:#88a3bf}

/* 통계 스트립 */
.stats{display:flex;flex-wrap:wrap;gap:40px;margin-top:40px;padding-top:30px;
  border-top:1px solid rgba(255,255,255,.16)}
.stat .num{font-family:'Gowun Batang',serif;font-size:34px;font-weight:700;color:#fff}
.stat .lab{font-size:13px;color:#9db4cc;margin-top:2px}

/* ---------- 연구소 소개 ---------- */
.about-section{background:var(--paper);border-top:1px solid var(--line)}
.about-body{max-width:780px;margin-bottom:36px}
.about-body p{color:var(--ink);font-size:16px;line-height:1.85;margin-bottom:16px}
.about-list{list-style:none;margin:20px 0 24px;display:flex;flex-direction:column;gap:16px}
.about-list li{padding:20px 24px;border-left:4px solid var(--accent);background:var(--bg);border-radius:0 10px 10px 0}
.about-list li strong{display:block;color:var(--navy);font-size:16px;margin-bottom:6px}
.about-list li p{color:var(--muted);font-size:14.5px;margin:0}
.about-methods{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.method-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.method-card h4{font-size:15px;font-weight:700;color:var(--navy);margin-bottom:10px;
  padding-bottom:10px;border-bottom:2px solid var(--accent)}
.method-card p{font-size:14px;color:var(--muted);line-height:1.75}
@media(max-width:680px){
  .about-methods{grid-template-columns:1fr}
}

/* ---------- 섹션 공통 ---------- */
.section{padding:72px 0}
.section-head{margin-bottom:34px}
.section-head .kicker{font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);font-weight:700}
.section-head h2{font-family:'Gowun Batang',serif;font-size:30px;color:var(--navy);
  margin-top:8px;letter-spacing:-.01em}
.section-head p{color:var(--muted);margin-top:8px;max-width:680px}

/* ---------- 설문 카드 (중앙 아이콘) ---------- */
.survey-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:22px}
.survey-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;display:flex;flex-direction:column;gap:16px;
  transition:.22s;position:relative;overflow:hidden}
.survey-card::after{content:"";position:absolute;left:0;top:0;width:4px;height:100%;
  background:var(--accent);transform:scaleY(0);transform-origin:top;transition:.25s}
.survey-card:hover{box-shadow:0 14px 36px -18px rgba(15,42,74,.45);transform:translateY(-3px);border-color:#cdd8e4}
.survey-card:hover::after{transform:scaleY(1)}
.survey-icon{width:64px;height:64px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  background:var(--accent-soft);color:var(--accent);flex:none}
.survey-icon svg{width:34px;height:34px}
.survey-card.edu .survey-icon{background:#eef0fb;color:#3a3f9e}
.survey-card h3{font-size:18px;color:var(--navy);line-height:1.4}
.survey-card .meta{font-size:13px;color:var(--muted)}
.survey-card .tag{display:inline-block;font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent);width:fit-content}
.survey-card.edu .tag{background:#eef0fb;color:#3a3f9e}
.survey-card .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px}
.progress-mini{flex:1;height:6px;background:#eef2f6;border-radius:99px;overflow:hidden}
.progress-mini i{display:block;height:100%;background:var(--accent)}

/* ---------- 패널 등록(시민/기업) ---------- */
.panel-cta{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.panel-box{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.panel-box h3{display:flex;align-items:center;gap:10px;color:var(--navy);font-size:19px;margin-bottom:8px}
.panel-box p{color:var(--muted);font-size:14px;margin-bottom:18px}

/* ---------- 리포트 리스트 ---------- */
.report-list{border-top:1px solid var(--line)}
.report-row{display:flex;align-items:center;gap:16px;padding:18px 4px;border-bottom:1px solid var(--line)}
.report-row .doc{color:var(--accent);flex:none}
.report-row .t{font-weight:600;color:var(--ink)}
.report-row .d{font-size:13px;color:var(--muted)}
.report-row .pill{margin-left:auto;font-size:12px;color:var(--muted);border:1px solid var(--line);padding:4px 10px;border-radius:6px}

/* ---------- 푸터 ---------- */
.site-footer{background:var(--navy);color:#c4d3e3;margin-top:40px}
.footer-inner{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;padding:40px 24px}
.footer-brand strong{color:#fff;font-size:17px}
.footer-brand p{font-size:13px;color:#9db4cc;margin-top:4px}
.footer-addr{font-size:14px;color:#e2ebf4}
.footer-copy{font-size:12px;color:#7e98b3;margin-top:6px;max-width:520px}

/* ---------- 폼(로그인/회원가입/설문) ---------- */
.auth-page{max-width:460px;margin:56px auto;padding:0 24px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:34px}
.card h1{font-family:'Gowun Batang',serif;font-size:26px;color:var(--navy);margin-bottom:6px}
.card .sub{color:var(--muted);font-size:14px;margin-bottom:24px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:6px}
.field input,.field select{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:9px;
  font-size:15px;font-family:inherit;background:#fff;transition:.15s}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.radio-row{display:flex;gap:10px}
.radio-row label{flex:1;border:1px solid var(--line);border-radius:9px;padding:11px;text-align:center;
  cursor:pointer;font-size:14px;font-weight:500;transition:.15s}
.radio-row input{display:none}
.radio-row input:checked + span{color:var(--accent);font-weight:700}
.radio-row label:has(input:checked){border-color:var(--accent);background:var(--accent-soft)}
.form-msg{padding:11px 14px;border-radius:9px;font-size:14px;margin-bottom:18px}
.form-msg.err{background:#fdecec;color:#b3261e;border:1px solid #f5c6c2}
.form-msg.ok{background:#e9f6ee;color:#1c7a43;border:1px solid #bfe6cd}
.form-foot{margin-top:8px;font-size:14px;color:var(--muted);text-align:center}
.form-foot a{color:var(--accent);font-weight:600}
.addr-row{display:flex;gap:8px;margin-bottom:6px}
.addr-row input{flex:1}
.addr-row .btn{flex:none;white-space:nowrap}

/* ---------- 설문 응답 페이지 ---------- */
.survey-page{max-width:780px;margin:40px auto;padding:0 24px}
.survey-hd{background:var(--navy);color:#fff;border-radius:var(--radius);padding:28px 30px;margin-bottom:24px}
.survey-hd h1{font-family:'Gowun Batang',serif;font-size:24px;line-height:1.4}
.survey-hd .desc{color:#bcd0e6;font-size:14px;margin-top:8px}
.q-block{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-bottom:16px}
.q-block .example{font-size:12px;font-weight:700;color:var(--accent);letter-spacing:.04em;
  text-transform:uppercase;margin-bottom:10px}
.q-block .q-title{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:14px;line-height:1.55}
.q-block .q-title .no{color:var(--accent);margin-right:6px}
.choice{display:flex;gap:11px;padding:12px 14px;border:1px solid var(--line);border-radius:10px;
  margin-bottom:9px;cursor:pointer;transition:.15s;align-items:flex-start}
.choice:hover{border-color:#bcd; background:#f7fafc}
.choice input{margin-top:4px;accent-color:var(--accent);flex:none}
.choice span{font-size:14.5px;line-height:1.5}
.choice:has(input:checked){border-color:var(--accent);background:var(--accent-soft)}
.q-text-input{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:9px;font-size:15px;font-family:inherit}
.survey-actions{position:sticky;bottom:0;background:rgba(245,247,250,.95);backdrop-filter:blur(6px);
  padding:16px 0;display:flex;gap:12px;border-top:1px solid var(--line);margin-top:8px}
.survey-actions .spacer{flex:1}
.badge-status{display:inline-block;font-size:12px;font-weight:700;padding:4px 11px;border-radius:999px}
.badge-status.temp{background:#fff3e0;color:#b26a00}
.badge-status.done{background:#e9f6ee;color:#1c7a43}

/* ---------- 관리자 ---------- */
.admin-wrap{display:flex;min-height:100vh}
.admin-side{width:230px;background:var(--navy);color:#cdd9e6;padding:24px 0;flex:none}
.admin-side .a-brand{padding:0 22px 20px;border-bottom:1px solid rgba(255,255,255,.12);margin-bottom:14px}
.admin-side .a-brand strong{color:#fff;font-size:16px}
.admin-side a{display:block;padding:11px 22px;font-size:14px;color:#bdcee0}
.admin-side a:hover,.admin-side a.active{background:rgba(255,255,255,.08);color:#fff;border-left:3px solid var(--accent)}
.admin-main{flex:1;padding:32px 36px;background:var(--bg)}
.admin-main h1{font-size:22px;color:var(--navy);margin-bottom:20px}
.table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.table th,.table td{padding:12px 14px;text-align:left;font-size:14px;border-bottom:1px solid var(--line)}
.table th{background:#f1f5f9;color:var(--navy);font-weight:600}
.table tr:last-child td{border-bottom:none}
.stat-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:28px}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px}
.stat-card .n{font-family:'Gowun Batang',serif;font-size:30px;color:var(--navy);font-weight:700}
.stat-card .l{font-size:13px;color:var(--muted);margin-top:2px}

/* ---------- 반응형 ---------- */
@media(max-width:860px){
  .main-nav{display:none}
  .panel-cta{grid-template-columns:1fr}
  .stats{gap:26px}
  .admin-side{width:64px}
  .admin-side .a-brand,.admin-side a span{display:none}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto}}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}