/*
Theme Name: GNS Sign LED
Description: 전광판광고 전문 사이트 (ledbillboard.gnssign.com) 전용 테마
Author: G&S간판
Version: 1.0
*/

/* ===== Design tokens (pastel) ===== */
:root{
  --mint:#bfe9df;
  --mint-dark:#8fd6c6;
  --lavender:#d9c9f5;
  --lavender-dark:#b79ef0;
  --coral:#ffc9b8;
  --coral-dark:#ff9f85;
  --cream:#fffaf3;
  --ink:#382c47;
  --ink-soft:#6b5d80;
  --line:#ece3f5;
  --radius:20px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(120,100,160,.14);
  --font-head:'Gowun Batang', serif;
  --font-body:'Noto Sans KR', sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--cream);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-family:var(--font-head);line-height:1.35;margin:0 0 .6em}
h1{font-size:clamp(2rem,5vw,3.2rem)}
h2{font-size:clamp(1.4rem,3vw,2rem);margin-top:2.4em}
h3{font-size:1.15rem}
.title-lg{font-size:clamp(1.4rem,3vw,2rem);text-align:left}
p{margin:0 0 1.1em}
a{color:inherit}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-sm)}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,250,243,.9);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:14px;padding-bottom:14px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-head);font-weight:700;font-size:1.15rem;text-decoration:none;color:var(--ink)}
.brand img{width:34px;height:34px;border-radius:9px}
.header-right{display:flex;align-items:center;gap:24px}
.site-nav{display:flex;gap:22px;font-size:.95rem}
.site-nav a{text-decoration:none;color:var(--ink-soft);font-weight:500}
.site-nav a:hover{color:var(--ink)}
.header-cta{
  background:linear-gradient(135deg,var(--mint-dark),var(--lavender-dark));
  color:#fff;padding:9px 20px;border-radius:999px;font-weight:700;font-size:.9rem;
  text-decoration:none;box-shadow:var(--shadow);
}

/* ===== Hero ===== */
.hero{
  position:relative;overflow:hidden;
  padding:76px 0 60px;
  text-align:center;
}
.hero::before{
  content:"";position:absolute;inset:-20% -10% auto -10%;height:130%;
  background:
    radial-gradient(circle at 15% 25%, var(--mint) 0%, transparent 55%),
    radial-gradient(circle at 85% 20%, var(--lavender) 0%, transparent 55%),
    radial-gradient(circle at 50% 90%, var(--coral) 0%, transparent 50%);
  opacity:.55;filter:blur(6px);
  animation:driftGlow 16s ease-in-out infinite alternate;
  z-index:0;
}
@keyframes driftGlow{0%{transform:translate(0,0) scale(1)}100%{transform:translate(-2%,2%) scale(1.06)}}
.hero-inner{position:relative;z-index:1}
.hero .eyebrow{
  display:inline-block;font-size:.8rem;letter-spacing:.28em;text-transform:uppercase;
  color:var(--ink-soft);background:#fff;border:1px solid var(--line);
  padding:7px 18px;border-radius:999px;margin-bottom:22px;
}
.hero h1{
  color:#000;
}
.hero .lead{max-width:640px;margin:0 auto 30px;color:var(--ink-soft);font-size:1.08rem}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:15px 30px;border-radius:999px;font-weight:700;font-size:1rem;
  text-decoration:none;box-shadow:var(--shadow);transition:transform .18s ease;
  border:none;cursor:pointer;
}
.btn:hover{transform:translateY(-3px)}
.btn-primary{background:linear-gradient(135deg,var(--coral-dark),var(--lavender-dark));color:#fff}
.btn-outline{background:#fff;color:var(--ink);border:1.5px solid var(--lavender-dark)}
.btn-lg{padding:18px 36px;font-size:1.1rem}

/* ===== Sections ===== */
.section{padding:56px 0}
.section-alt{background:#fff}
.badge-row{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin:18px 0 0}
.badge{background:var(--mint);color:var(--ink);font-size:.82rem;font-weight:700;padding:6px 14px;border-radius:999px}

/* ===== Tables ===== */
.table-wrap{overflow-x:auto;margin:1.4em 0;border-radius:var(--radius-sm);box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;background:#fff;font-size:.95rem}
table caption{text-align:left;padding:12px 16px;font-weight:700;background:var(--lavender);color:var(--ink)}
th,td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line)}
thead th{background:var(--cream);font-family:var(--font-head)}
tr:last-child td{border-bottom:none}

/* ===== Cards / grid ===== */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);
}
.card h3{margin-top:0}
.step-card{
  background:#fff;border-radius:var(--radius);padding:24px 20px;text-align:center;
  box-shadow:var(--shadow);position:relative;
}
.check-card{position:relative;padding-top:30px}
.check-card h3{margin-bottom:6px}
.check-card p{margin:0;color:var(--ink-soft);font-size:.94rem}
.check-badge{
  position:absolute;top:-14px;left:20px;
  width:30px;height:30px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;color:#fff;font-size:.9rem;
  background:linear-gradient(135deg,var(--coral-dark),var(--lavender-dark));
  box-shadow:var(--shadow);
}
.step-num{
  width:38px;height:38px;border-radius:50%;margin:0 auto 12px;
  display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;
  background:linear-gradient(135deg,var(--mint-dark),var(--lavender-dark));
}

/* ===== Image reveal effect ===== */
.reveal-img{
  opacity:0;transform:translateY(18px);
  animation:revealUp .8s ease forwards;
}
.reveal-img.d1{animation-delay:.08s}
.reveal-img.d2{animation-delay:.16s}
.reveal-img.d3{animation-delay:.24s}
.reveal-img.d4{animation-delay:.32s}
@keyframes revealUp{to{opacity:1;transform:none}}
.figure{margin:0}
.figure figcaption{font-size:.85rem;color:var(--ink-soft);margin-top:8px;text-align:center}
.img-frame{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.img-frame img{border-radius:0;transition:transform .5s ease}
.img-frame:hover img{transform:scale(1.05)}

/* ===== Hero slideshow (여러 장 크로스페이드 — 동영상처럼 보이는 효과) ===== */
.hero-slideshow{
  position:relative;aspect-ratio:16/9;overflow:hidden;
  border-radius:var(--radius);box-shadow:var(--shadow);
}
.hero-slideshow .hs-img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  border-radius:0;opacity:0;animation:heroFade 20s infinite;
}
@keyframes heroFade{
  0%{opacity:0;transform:scale(1.08)}
  3%{opacity:1}
  17%{opacity:1;transform:scale(1)}
  20%{opacity:0;transform:scale(1)}
  100%{opacity:0}
}

/* Before / after */
.ba-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:end}
.ba-item{position:relative}
.ba-tag{
  position:absolute;top:10px;left:10px;z-index:2;
  background:var(--ink);color:#fff;font-size:.78rem;font-weight:700;
  padding:4px 12px;border-radius:999px;
}
.ba-tag.after{background:linear-gradient(135deg,var(--coral-dark),var(--lavender-dark))}

/* ===== FAQ ===== */
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  margin-bottom:12px;overflow:hidden;
}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 20px;font-weight:700;
  display:flex;justify-content:space-between;align-items:center;gap:12px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:1.4rem;color:var(--lavender-dark);flex:none;transition:transform .2s;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-a{padding:0 20px 18px;color:var(--ink-soft)}
#faq-more{display:none}
#faq-more.open{display:block}
.faq-more-btn{
  display:block;margin:8px auto 0;background:var(--lavender);color:var(--ink);
  border:none;padding:12px 26px;border-radius:999px;font-weight:700;cursor:pointer;
}

/* ===== CTA banner ===== */
.cta-banner{
  background:linear-gradient(135deg,var(--mint),var(--lavender) 60%,var(--coral));
  border-radius:28px;padding:46px 30px;text-align:center;margin:20px 0;
}
.cta-banner h2{margin-top:0}

/* ===== Footer ===== */
.site-footer{background:#2f2440;color:#e7defb;padding:44px 0 26px;margin-top:60px}
.site-footer .wrap{display:flex;flex-wrap:wrap;gap:30px;justify-content:space-between}
.foot-block h4{font-family:var(--font-head);margin:0 0 10px;color:#fff}
.foot-block p{margin:0 0 4px;font-size:.92rem;color:#cabdea}
.foot-nap{font-size:.85rem;color:#a89bc9;margin-top:26px;border-top:1px solid #453a5c;padding-top:18px}

/* ===== Utility ===== */
.center{text-align:center}
.small{font-size:.85rem;color:var(--ink-soft)}
.mt0{margin-top:0}

/* ===== Mobile ===== */
@media (max-width:820px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .site-nav{display:none}
  .ba-row{grid-template-columns:1fr}
  .site-footer .wrap{flex-direction:column}
}