/* 파일형식 변환기 by allen — 앱/변환기 공용 스타일
   index.html과 생성된 포맷쌍 랜딩페이지(scripts/gen-pages.mjs)가 함께 사용하는 단일 소스. */
:root{
  --orange:#FF7A1A; --orange-dark:#F26100; --orange-bg:#FFF1E6;
  --bg:#F2F4F6; --card:#FFFFFF;
  --t900:#191F28; --t700:#4E5968; --t500:#8B95A1; --t400:#B0B8C1;
  --line:#E5E8EB; --line2:#F2F4F6; --r:18px;
}
*{ margin:0; padding:0; box-sizing:border-box; -webkit-tap-highlight-color:transparent; }
body{ background:var(--bg); color:var(--t900);
  font-family:-apple-system,BlinkMacSystemFont,system-ui,'Apple SD Gothic Neo','Segoe UI',sans-serif;
  -webkit-font-smoothing:antialiased; letter-spacing:-0.01em; }

header{ background:var(--card); border-bottom:1px solid var(--line); padding:16px 20px; }
.logo{ font-family:inherit; font-size:22px; font-weight:800; color:var(--orange); }
.logo a{ color:inherit; text-decoration:none; }
.logo small{ font-family:inherit; color:var(--t500); font-weight:500; font-size:12px; margin-left:8px; }

.container{ max-width:560px; margin:0 auto; padding:20px 16px 64px; }
.card{ background:var(--card); border-radius:var(--r); padding:24px 20px; box-shadow:0 1px 4px rgba(0,0,0,.04); margin-bottom:14px; }
.section-title{ font-size:20px; font-weight:800; margin-bottom:16px; letter-spacing:-0.02em; }
.lead{ font-size:14px; font-weight:500; color:var(--t700); line-height:1.7; margin-bottom:18px; }

.tabs{ display:flex; gap:6px; background:var(--line2); padding:4px; border-radius:14px; margin-bottom:18px; }
.tabs button{ flex:1; padding:12px; border:none; border-radius:10px; background:transparent; font-family:inherit;
  font-size:15px; font-weight:700; color:var(--t500); cursor:pointer; }
.tabs button.on{ background:#fff; color:var(--t900); box-shadow:0 1px 3px rgba(0,0,0,.1); }

.dropzone{ border:2px dashed var(--line); border-radius:14px; padding:36px 16px; text-align:center; cursor:pointer;
  transition:border-color .15s, background .15s; }
.dropzone.drag{ border-color:var(--orange); background:var(--orange-bg); }
.dropzone .dz-icon{ font-size:34px; }
.dropzone .dz-main{ font-size:16px; font-weight:700; color:var(--t700); margin-top:10px; }
.dropzone .dz-sub{ font-size:13px; font-weight:500; color:var(--t400); margin-top:6px; line-height:1.6; }
#fileInput{ display:none; }

.filebox{ display:none; background:var(--line2); border-radius:12px; padding:14px 16px; margin-top:12px;
  font-size:14px; font-weight:600; color:var(--t700); word-break:break-all; }
.filebox b{ color:var(--t900); }
.filebox .fb-clear{ float:right; border:none; background:none; color:var(--t400); font-size:16px; cursor:pointer; }

.opts{ margin-top:18px; display:grid; gap:14px; }
.opt{ display:grid; gap:8px; }
.opt label{ font-size:13px; font-weight:600; color:var(--t700); }
select, input[type="text"], input[type="number"]{ background:var(--line2); border:1.5px solid transparent; border-radius:12px;
  padding:14px 16px; font-family:inherit; font-size:16px; font-weight:600; color:var(--t900); width:100%;
  transition:border-color .15s, background .15s; appearance:none; }
select:focus, input:focus{ outline:none; border-color:var(--orange); background:#fff; }
select{ background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238B95A1' stroke-width='2' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 16px center; padding-right:40px; }
.opt-row2{ display:grid; grid-template-columns:1fr 1fr; gap:10px; }
.check{ display:flex; align-items:center; gap:8px; font-size:14px; font-weight:600; color:var(--t700); cursor:pointer; }
.check input{ accent-color:var(--orange); width:18px; height:18px; }
input[type="range"]{ width:100%; accent-color:var(--orange); }

.btn{ width:100%; margin-top:20px; background:var(--orange); color:#fff; border:none; border-radius:14px; padding:17px;
  font-family:inherit; font-size:17px; font-weight:700; cursor:pointer; letter-spacing:-0.01em; }
.btn:hover{ background:var(--orange-dark); }
.btn:disabled{ background:var(--t400); cursor:not-allowed; }

.progress-wrap{ display:none; margin-top:18px; }
.progress-label{ font-size:13px; font-weight:600; color:var(--t700); margin-bottom:8px; display:flex; justify-content:space-between; }
.progress-bar{ height:10px; background:var(--line2); border-radius:99px; overflow:hidden; }
.progress-fill{ height:100%; width:0%; background:var(--orange); border-radius:99px; transition:width .2s; }

.done{ display:none; margin-top:18px; background:var(--orange-bg); border-radius:12px; padding:16px; text-align:center; }
.done .d-name{ font-size:14px; font-weight:700; color:var(--t900); word-break:break-all; }
.done .d-size{ font-size:12px; font-weight:600; color:var(--t500); margin-top:4px; }
.done a{ display:inline-block; margin-top:12px; background:var(--orange); color:#fff; text-decoration:none;
  border-radius:12px; padding:13px 28px; font-size:15px; font-weight:700; }
.errbox{ display:none; margin-top:18px; background:#FDECEC; color:#F04452; border-radius:12px; padding:14px 16px;
  font-size:13px; font-weight:600; line-height:1.6; word-break:break-all; }

.privacy{ text-align:center; font-size:12px; font-weight:500; color:var(--t400); line-height:1.7; }
.privacy b{ color:var(--t500); }
.ad-slot{ background:var(--line2); border-radius:12px; padding:22px; text-align:center;
  font-size:12px; font-weight:600; color:var(--t400); margin-bottom:14px; }
footer{ text-align:center; padding:24px; font-size:12px; color:var(--t400); }
.site-links{ text-align:center; margin-top:18px; font-size:13px; font-weight:600; color:var(--t400); }
.site-links a{ color:var(--t500); text-decoration:none; }
.site-links a:hover{ color:var(--orange); }
/* SEO 콘텐츠 섹션 */
.feature-list{ list-style:none; display:grid; gap:12px; }
.feature-list li{ display:flex; gap:12px; align-items:flex-start; font-size:14px; font-weight:600; color:var(--t700); line-height:1.55; }
.feature-list .fi{ font-size:20px; line-height:1.3; flex-shrink:0; }
.feature-list b{ color:var(--t900); }
.steps{ list-style:none; counter-reset:step; display:grid; gap:14px; }
.steps li{ display:flex; gap:12px; align-items:center; font-size:14px; font-weight:600; color:var(--t700); line-height:1.5; }
.steps li::before{ counter-increment:step; content:counter(step); flex-shrink:0;
  width:26px; height:26px; border-radius:50%; background:var(--orange); color:#fff;
  font-size:14px; font-weight:800; display:flex; align-items:center; justify-content:center; }
.faq-home{ display:grid; gap:16px; }
.faq-home dt{ font-size:15px; font-weight:800; color:var(--t900); margin-bottom:6px; }
.faq-home dd{ font-size:14px; font-weight:500; color:var(--t700); line-height:1.65; }
.more-link{ display:inline-block; margin-top:4px; font-size:13px; font-weight:700; color:var(--orange); text-decoration:none; }
/* 관련 변환 링크 그리드 */
.rel-grid{ display:grid; grid-template-columns:1fr 1fr; gap:10px; }
.rel-grid a{ display:block; background:var(--line2); border-radius:12px; padding:14px 16px; text-decoration:none;
  font-size:14px; font-weight:700; color:var(--t700); }
.rel-grid a:hover{ background:var(--orange-bg); color:var(--orange-dark); }