/* ============================================================
   knowknewknown · 도구 공통 스타일 (/clock 페이지 공유)
   팔레트는 서버시간/운세/Stellation 페이지와 동일.
   ============================================================ */
:root{
  --bg:#0b0d12; --bg2:#161b26; --panel:#141821; --line:#232a36;
  --txt:#f4f6fb; --dim:#8a93a6; --accent:#2ee6a6; --warn:#ffcc4d; --err:#ff6b6b;
  --surface:#1a2030; --surface2:#1d2330; --surface3:#222a3a;
  --max:760px;
}
html[data-theme="light"]{
  --bg:#eef1f7; --bg2:#ffffff; --panel:#ffffff; --line:#e2e7f0;
  --txt:#1b1f29; --dim:#697084; --accent:#0a9c6c; --warn:#b5820a; --err:#dc3b3b;
  --surface:#f3f5fa; --surface2:#e9edf5; --surface3:#dde3ee;
  color-scheme:light;
}
html:not([data-theme="light"]){color-scheme:dark}
*{box-sizing:border-box;margin:0;padding:0}
html,body{min-height:100%}
html{background:var(--bg)}
body{
  background:radial-gradient(1200px 700px at 50% -10%,var(--bg2) 0%,var(--bg) 60%);
  background-attachment:fixed;
  color:var(--txt);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Apple SD Gothic Neo","Malgun Gothic",sans-serif;
  line-height:1.65;font-size:16px;min-height:100vh;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

/* ===== 상단바 ===== */
.topbar-wrap{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.topbar-in{max-width:1000px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;
  gap:10px;flex-wrap:wrap;padding:10px 20px}
.site-nav{display:flex;gap:4px;background:var(--panel);border:1px solid var(--line);border-radius:12px;
  padding:5px;flex-wrap:wrap}
.site-nav a{color:var(--dim);font-size:13px;font-weight:700;text-decoration:none;padding:7px 13px;
  border-radius:8px;transition:.15s;white-space:nowrap}
.site-nav a:hover{color:var(--txt);text-decoration:none}
.site-nav a.active{background:var(--accent);color:#06140e}
.brand{display:inline-flex;align-items:center;gap:7px;margin-right:8px;padding-left:6px}
.brand img{height:24px;width:auto;display:block}
.brand b{font-weight:800;font-size:14px;letter-spacing:-.3px}
.ctrls{display:flex;align-items:center;gap:8px}
select#langSelect{-webkit-appearance:none;appearance:none;background:var(--panel);color:var(--txt);
  border:1px solid var(--line);border-radius:10px;padding:8px 30px 8px 12px;font-size:13px;font-weight:600;
  cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238a93a6' stroke-width='3'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 10px center}
select#langSelect:focus{outline:none;border-color:var(--accent)}
select#langSelect option{background:var(--panel);color:var(--txt)}
.theme-btn{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:var(--panel);
  color:var(--txt);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.15s;flex:0 0 auto}
.theme-btn:hover{border-color:var(--accent);color:var(--accent)}
.theme-btn svg{width:18px;height:18px}

/* ===== 본문 ===== */
main{max-width:var(--max);margin:0 auto;padding:28px 20px 64px}
.page-head{margin-bottom:24px}
.page-head h1{font-size:clamp(26px,5vw,34px);font-weight:800;letter-spacing:-.5px;margin-bottom:8px}
.page-head p{color:var(--dim);font-size:15px}
.tool-cat{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.4px;color:var(--accent);
  text-transform:uppercase;margin-bottom:6px}

/* 카드/패널 */
.card{background:var(--surface2);border:1px solid var(--line);border-radius:16px;padding:22px;margin-bottom:18px}
.card h2{font-size:18px;font-weight:800;margin-bottom:12px;letter-spacing:-.2px}
.muted{color:var(--dim)}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;font-weight:700;color:var(--dim)}
input[type=text],input[type=number],input[type=date],select.inp,textarea{
  background:var(--panel);color:var(--txt);border:1px solid var(--line);border-radius:10px;
  padding:10px 12px;font-size:15px;font-family:inherit;width:100%}
input:focus,select.inp:focus,textarea:focus{outline:none;border-color:var(--accent)}
textarea{resize:vertical;min-height:160px;font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace;
  font-size:13px;line-height:1.5}
.btn{background:var(--accent);color:#06140e;border:0;border-radius:12px;padding:11px 20px;font-size:15px;
  font-weight:800;cursor:pointer;transition:transform .05s,opacity .15s}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}
.btn-ghost{background:var(--panel);color:var(--txt);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.seg{display:inline-flex;gap:4px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:5px;flex-wrap:wrap}
.seg button{background:transparent;border:0;color:var(--dim);font-size:13px;font-weight:700;padding:7px 13px;
  border-radius:8px;cursor:pointer;transition:.15s}
.seg button.active{background:var(--accent);color:#06140e}
.chip{display:inline-block;background:var(--panel);border:1px solid var(--line);border-radius:999px;
  padding:6px 12px;font-size:13px;font-weight:600;color:var(--txt);cursor:pointer;transition:.15s}
.chip:hover{border-color:var(--accent);color:var(--accent)}
.note{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:10px;padding:12px 14px;font-size:13.5px;color:var(--dim);line-height:1.6}
.err{color:var(--err);font-size:13px;font-weight:600}
.ok{color:var(--accent)}
code,kbd{font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace}

/* ===== 푸터 ===== */
.site-footer{max-width:var(--max);margin:0 auto;padding:24px 20px 48px;color:var(--dim);font-size:13px;
  border-top:1px solid var(--line);text-align:center}
.site-footer .links{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-bottom:8px}
.site-footer .links a{color:var(--dim);font-size:13px;font-weight:600}
.site-footer .links a:hover{color:var(--accent);text-decoration:none}
.site-footer .copy{font-size:12px;color:var(--dim)}

@media (max-width:600px){
  .topbar-in{padding:8px 14px}
  main{padding:22px 16px 56px}
}