/* ============================================================
   ECHO Microwave KR — 공통 스타일
   theme/css/style.css
   ============================================================ */

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;word-break: keep-all;}

:root{
  --white:#fff;--off-white:#f7f8fa;
  --gray-50:#f0f1f5;--gray-100:#e4e6ed;--gray-200:#c8ccd8;
  --gray-400:#8d93a5;--gray-600:#555b6e;--gray-800:#2a2d35;
  --gray-900:#16181d;--black:#0a0b0d;
  --accent:#2563eb;--accent-light:#3b82f6;--accent-dark:#1d4ed8;
  --accent-glow:rgba(37,99,235,.15);--accent-subtle:rgba(37,99,235,.06);
  --font-ko:'Noto Sans KR',-apple-system,sans-serif;
  --font-en:'DM Sans',-apple-system,sans-serif;
  --ease-out-expo:cubic-bezier(.16,1,.3,1);
}

html{scroll-behavior:smooth;overflow-x:hidden}
body{font-family:var(--font-ko);color:var(--gray-900);background:var(--white);overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}

/* ── Reveal 애니메이션 ── */
.reveal{opacity:0;transform:translateY(60px);transition:opacity .9s var(--ease-out-expo),transform .9s var(--ease-out-expo)}
.reveal-left{opacity:0;transform:translateX(-80px);transition:opacity .9s var(--ease-out-expo),transform .9s var(--ease-out-expo)}
.reveal-right{opacity:0;transform:translateX(80px);transition:opacity .9s var(--ease-out-expo),transform .9s var(--ease-out-expo)}
.reveal-scale{opacity:0;transform:scale(.85);transition:opacity .9s var(--ease-out-expo),transform .9s var(--ease-out-expo)}
.visible{opacity:1!important;transform:none!important}
[data-delay="1"]{transition-delay:.1s}[data-delay="2"]{transition-delay:.2s}
[data-delay="3"]{transition-delay:.3s}[data-delay="4"]{transition-delay:.4s}[data-delay="5"]{transition-delay:.5s}

/* ── Navbar (Clean & Modern) ── */
.navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; height: 90px; display: flex; align-items: center; background: rgba(255, 255, 255, 1); backdrop-filter: blur(16px) saturate(180%); -webkit-backdrop-filter: blur(16px) saturate(180%); border-bottom: 1px solid rgba(0, 0, 0, 0.05); transition: all 0.4s ease; }
.navbar.scrolled { background: rgba(255, 255, 255, 0.6); box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04); border-bottom-color: transparent; }
.nav-inner { width: 100%; max-width: 1200px; padding: 0 48px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; position: relative; }
.nav-logo { font-family: var(--font-en); font-size: 1.25rem; font-weight: 800; letter-spacing: -0.5px; display: flex; align-items: center; gap: 8px; flex-shrink: 0; z-index: 101; color: var(--gray-900); }
.nav-logo .dot { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; }

.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-item { position: relative; height: 72px; display: flex; align-items: center; }
.nav-link { font-size: 0.95rem; font-weight: 600; color: var(--gray-600); transition: color 0.3s ease; cursor: pointer; padding: 10px 0; position: relative; }
.nav-link::after { content: ''; position: absolute; bottom: 0; left: 50%; width: 0; height: 2px; background: var(--accent); transition: all 0.3s ease; transform: translateX(-50%); }
.nav-item:hover .nav-link, .nav-item.is-active .nav-link { color: var(--gray-900); }
.nav-item:hover .nav-link::after, .nav-item.is-active .nav-link::after { width: 100%; }

.dropdown-menu { position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(10px); background: #fff; min-width: 180px; padding: 12px; border-radius: 16px; box-shadow: 0 12px 40px rgba(0,0,0,0.08); border: 1px solid var(--gray-100); opacity: 0; visibility: hidden; pointer-events: none; transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1); }
.nav-item.has-dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; pointer-events: auto; transform: translateX(-50%) translateY(0); }
.dropdown-item { display: block; font-size: 0.9rem; font-weight: 500; color: var(--gray-600); padding: 10px 16px; border-radius: 8px; transition: all 0.2s ease; text-align: left; white-space: nowrap; }
.dropdown-item:hover, .dropdown-item.is-cur { background: var(--off-white); color: var(--accent); font-weight: 600; }

.nav-ext { font-family: var(--font-en); font-size: 0.85rem; font-weight: 700; color: #fff; background: var(--gray-900); padding: 8px 20px; border-radius: 100px; transition: all 0.3s ease; letter-spacing: 0.5px; margin-left: 16px; }
.nav-ext:hover { background: var(--accent); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(37,99,235,0.2); }

.nav-hamburger { display: none; flex-direction: column; justify-content: center; gap: 6px; width: 32px; height: 32px; cursor: pointer; z-index: 101; }
.nav-hamburger span { display: block; width: 100%; height: 2px; background: var(--gray-900); border-radius: 2px; transition: all 0.3s ease; transform-origin: left center; }
.nav-hamburger.is-active span:nth-child(1) { transform: rotate(45deg); }
.nav-hamburger.is-active span:nth-child(2) { opacity: 0; }
.nav-hamburger.is-active span:nth-child(3) { transform: rotate(-45deg); }

/* ── 서브 네브 (하위 페이지) ── */
.sub-nav{background:var(--off-white);border-bottom:1px solid var(--gray-100);padding:0 48px;margin-top:72px}
.sub-nav-inner{max-width:1200px;margin:0 auto;display:flex;gap:4px}
.sub-nav a{font-size:.84rem;font-weight:500;color:var(--gray-400);padding:16px 20px;border-bottom:2px solid transparent;transition:all .3s ease}
.sub-nav a:hover{color:var(--gray-800)}
.sub-nav a.active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}

/* ── 페이지 히어로 (하위 페이지 상단) ── */
.page-hero{padding:220px 48px 150px;text-align:center;background:var(--black);color:var(--white);position:relative;overflow:hidden}
.page-hero::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(37,99,235,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(37,99,235,.06) 1px,transparent 1px);background-size:60px 60px;mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,black,transparent);-webkit-mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,black,transparent)}
.page-hero-label{font-family:var(--font-en);font-size:.72rem;font-weight:600;letter-spacing:3px;text-transform:uppercase;color:var(--accent-light);margin-bottom:6px;position:relative}
.page-hero h1{font-size:clamp(2rem,4.5vw,3.2rem);font-weight:800;letter-spacing:-1.5px;line-height:1.3;position:relative}
.page-hero-desc{font-size:1rem;color:var(--gray-400);margin-top:16px;position:relative}
.hero-slide h2 {
  font-size: var(--hero-h1-size, clamp(2.4rem, 5vw, 4rem));
  font-weight: 700;
  line-height: 1.15;

}

.page-hero--tech {
  position: relative;
  overflow: hidden;
  background: #080c1a;

}

/* 배경 사진 레이어 */
.hero-bg-img {
  position: absolute;
  inset: 0;
  background-image: url('../img/hero-bg.jpg'); 
  background-size: cover;
  background-position: center;
  opacity: 0.5;   
  transition: transform .05s linear;
}


.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  transition: transform .05s linear;
}


.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 40%, #080c1a 100%);
  z-index: 1;
}

/* 텍스트 */
.page-hero-inner {
  position: relative;
  z-index: 2;
  transition: transform .05s linear, opacity .05s linear;
}

.page-hero--tech h1 { color: #fff; }



/* ── 섹션 공통 ── */
.section{padding:140px 48px;position:relative}
.section-label{font-family:var(--font-en);font-size:.75rem;font-weight:600;letter-spacing:3px;text-transform:uppercase;color:var(--accent);margin-bottom:16px}
.section-title{font-size:clamp(2rem,4vw,3rem);font-weight:800;line-height:1.3;letter-spacing:-1.5px;margin-bottom:20px}
.section-desc{font-size:1.05rem;color:var(--gray-600);line-height:1.8;max-width:560px; word-break: keep-all;}
.content-section{padding:100px 48px;max-width:1200px;margin:0 auto}
.content-section.alt{background:var(--off-white);max-width:none}
.content-section.alt .inner{max-width:1200px;margin:0 auto;padding:0 48px}

/* ── 버튼 ── */
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-ko);font-size:.95rem;font-weight:600;padding:16px 36px;border-radius:14px;border:none;cursor:pointer;transition:all .4s var(--ease-out-expo);position:relative;overflow:hidden}
.btn-primary{background:var(--accent);color:var(--white);box-shadow:0 4px 24px rgba(37,99,235,.3)}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 8px 32px rgba(37,99,235,.4)}
.btn-ghost{background:rgba(255,255,255,.06);color:var(--white);border:1.5px solid rgba(255,255,255,.15);backdrop-filter:blur(8px)}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.3);transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--gray-900);border:1.5px solid var(--gray-200)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn .arrow{transition:transform .3s ease}.btn:hover .arrow{transform:translateX(4px)}

/* ── 이미지 플레이스홀더 공통 ── */
.img-placeholder{width:100%;aspect-ratio:16/9;background:linear-gradient(135deg,var(--gray-900),var(--gray-800));border-radius:24px;display:flex;flex-direction:column;justify-content:center;align-items:center;color:var(--gray-400);gap:8px;border:2px dashed var(--gray-600)}
.img-placeholder .ph-label{font-family:var(--font-en);font-size:.7rem;letter-spacing:2px;text-transform:uppercase;color:var(--accent-light);background:rgba(37,99,235,.15);padding:4px 14px;border-radius:6px}
.img-placeholder-prod{width:100%;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;background:rgba(255,255,255,.02);color:var(--gray-400);gap:6px;border-bottom:1px solid rgba(255,255,255,.06)}
.img-placeholder-prod .ph-label{font-family:var(--font-en);font-size:.6rem;letter-spacing:2px;color:var(--accent-light);background:rgba(37,99,235,.15);padding:3px 10px;border-radius:6px}
.img-placeholder-hero{width:100%;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:8px;color:var(--gray-400)}
.img-placeholder-hero .ph-label{font-family:var(--font-en);font-size:.7rem;letter-spacing:2px;text-transform:uppercase;color:var(--accent-light);background:rgba(37,99,235,.2);padding:4px 14px;border-radius:6px}

/* ── Footer ── */
footer{background:var(--gray-900);color:var(--gray-400);padding:72px 48px 36px}
.ft-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:60px}
.ft-brand{font-family:var(--font-en);font-size:1.15rem;font-weight:700;color:var(--white);margin-bottom:20px;display:flex;align-items:center;gap:6px}
.ft-brand .dot{width:6px;height:6px;background:var(--accent);border-radius:50%}
.ft-info{font-size:.82rem;line-height:2}
.ft-col h5{font-size:.82rem;font-weight:600;color:var(--white);margin-bottom:20px;letter-spacing:1px;text-transform:uppercase}
.ft-col a{display:block;font-size:.85rem;padding:5px 0;transition:color .2s ease}
.ft-col a:hover{color:var(--white)}
.ft-bottom{max-width:1200px;margin:48px auto 0;padding-top:28px;border-top:1px solid rgba(255,255,255,.06);display:flex;justify-content:space-between;font-family:var(--font-en);font-size:.75rem;color:var(--gray-600)}

/* ── Info Table (회사소개 등) ── */
.info-table{width:100%;border-collapse:collapse;margin-top:40px}
.info-table tr{border-bottom:1px solid var(--gray-100);transition:background .3s ease}
.info-table tr:hover{background:var(--gray-50)}
.info-table th{width:120px;padding:20px 24px;text-align:left;font-size:.88rem;font-weight:600;color:var(--gray-800)}
.info-table td{padding:20px 24px;font-size:.88rem;color:var(--gray-600);line-height:1.6}

/* ── 인증 배지 ── */
.cert-row{display:flex;gap:20px;margin-top:40px;flex-wrap:wrap;justify-content:center}
.cert-badge{display:flex;align-items:center;gap:12px;background:var(--white);border:1px solid var(--gray-100);border-radius:16px;padding:16px 24px;transition:all .4s ease}
.cert-badge:hover{border-color:rgba(37,99,235,.15);box-shadow:0 8px 24px rgba(0,0,0,.04)}
.cert-icon{width:40px;height:40px;border-radius:10px;background:var(--accent-subtle);display:flex;align-items:center;justify-content:center;font-size:1.1rem}
.cert-name{font-size:.82rem;font-weight:600;color:var(--gray-800)}
.cert-desc{font-size:.72rem;color:var(--gray-400)}

/* ── 반응형 ── */
@media(max-width:1024px){
  .ft-inner{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .section{padding:100px 24px}
  .content-section,.content-section.alt{padding:72px 24px}
  .content-section.alt .inner{padding:0}
  .page-hero,.sub-nav{padding-left:24px;padding-right:24px}
  
  /* 모바일 네비게이션 적용 */
  .nav-inner { padding: 0 24px; }
  .nav-hamburger { display: flex; }
  .nav-links { position: fixed; top: 0; left: 0; width: 100%; height: 100vh; background: rgba(255,255,255,0.98); backdrop-filter: blur(10px); flex-direction: column; align-items: flex-start; justify-content: center; gap: 24px; padding: 48px; opacity: 0; visibility: hidden; pointer-events: none; transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1); transform: translateY(-20px); }
  .nav-links.is-mobile-open { opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0); }
  .nav-item { height: auto; flex-direction: column; align-items: flex-start; width: 100%; }
  .nav-link { font-size: 1.5rem; font-weight: 700; padding: 0; border: none; }
  .nav-link::after { display: none; }
  .dropdown-menu { position: relative; top: 0; left: 0; transform: none; box-shadow: none; border: none; padding: 12px 0 0 16px; min-width: 100%; opacity: 1; visibility: visible; pointer-events: auto; background: transparent; display: flex; flex-direction: column; align-items: flex-start; }
  .nav-item.has-dropdown:hover .dropdown-menu { transform: none; }
  .dropdown-item { padding: 8px 0; font-size: 1rem; color: var(--gray-400); text-align: left; }
  .nav-ext { margin: 24px 0 0 0; font-size: 1rem; padding: 12px 28px; }

  /* 기존 모바일 반응형 설정 */
  .info-table th{width:80px;padding:16px 12px}
  .info-table td{padding:16px 12px}
  .ft-inner{grid-template-columns:1fr;gap:36px}
  .ft-bottom{flex-direction:column;gap:8px;text-align:center}
}