/* === Fonts === */
@font-face { font-family: 'NanumSquareR'; font-weight: 400; font-display: swap; src: url('/fonts/NanumSquareR.ttf') format('truetype'); }
@font-face { font-family: 'NanumSquareB'; font-weight: 700; font-display: swap; src: url('/fonts/NanumSquareB.ttf') format('truetype'); }
@font-face { font-family: 'NanumSquareRoundB'; font-weight: 700; font-display: swap; src: url('/fonts/NanumSquareRoundB.ttf') format('truetype'); }

/* === Variables === */
:root {
  --primary: #060097;
  --primary-light: #2d27c0;
  --accent: #ffcd57;
  --accent-hover: #e6b84e;
  --dark: #1e293b;
  --body: #67768e;
  --light-bg: #f9f6fe;
  --white: #ffffff;
  --gray: #F2F5F7;
  --blue: #136598;
  --success: #10b981;
  --danger: #ef4444;
  --max-w: 1200px;
  --header-h: 70px;
  --radius: 12px;
  --shadow: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
}

/* === Reset === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;scroll-padding-top:var(--header-h)}
body{font-family:'NanumSquareR','Noto Sans KR',system-ui,-apple-system,sans-serif;color:var(--body);line-height:1.7;background:var(--white);overflow-x:hidden}
h1,h2,h3,h4,h5,h6{font-family:'NanumSquareB','Noto Sans KR',system-ui,sans-serif;font-weight:700;color:var(--dark);line-height:1.3}
h2,h3{font-family:'NanumSquareRoundB','Noto Sans KR',system-ui,sans-serif}
a{color:var(--primary);text-decoration:none;transition:color .3s}
a:hover{color:var(--primary-light)}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
button{cursor:pointer;font-family:inherit}
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}

/* === Language Switcher === */
.lang-switch{position:relative}
.lang-switch button{background:none;border:1px solid rgba(255,255,255,.3);color:#fff;padding:6px 14px;border-radius:20px;font-size:.85rem;display:flex;align-items:center;gap:6px;transition:all .3s}
.site-header.scrolled .lang-switch button{border-color:var(--dark);color:var(--dark)}
.lang-switch button:hover{background:rgba(255,255,255,.15)}
.lang-dropdown{position:absolute;top:calc(100% + 8px);right:0;background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow-lg);min-width:140px;display:none;z-index:100;overflow:hidden}
.lang-dropdown.open{display:block}
.lang-dropdown a{display:flex;align-items:center;gap:10px;padding:10px 16px;color:var(--dark);font-size:.9rem;transition:background .2s}
.lang-dropdown a:hover{background:var(--gray)}
.lang-dropdown a.active{background:var(--light-bg);color:var(--primary);font-weight:700}

/* === Header === */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;transition:all .3s}
.site-header.transparent{background:transparent}
.site-header.scrolled{background:rgba(255,255,255,.97);box-shadow:0 2px 20px rgba(0,0,0,.08)}
.header-inner{max-width:var(--max-w);margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:12px 24px;height:var(--header-h)}
.site-logo img{max-width:160px;transition:all .2s}
.site-logo .logo-white{display:block}.site-logo .logo-dark{display:none}
.site-header.scrolled .site-logo .logo-white{display:none}
.site-header.scrolled .site-logo .logo-dark{display:block}
.header-right{display:flex;align-items:center;gap:8px}
.main-nav ul{display:flex;gap:0}
.main-nav ul li a{display:block;padding:8px 16px;font-size:.9rem;color:rgba(255,255,255,.9);border-radius:6px;transition:all .3s}
.site-header.scrolled .main-nav ul li a{color:var(--dark)}
.main-nav ul li a:hover{background:rgba(255,255,255,.15);color:#fff}
.site-header.scrolled .main-nav ul li a:hover{background:var(--light-bg);color:var(--primary)}
.menu-toggle{display:none;background:none;border:none;padding:8px}
.menu-toggle span{display:block;width:22px;height:2px;margin:5px 0;background:#fff;transition:all .3s;border-radius:2px}
.site-header.scrolled .menu-toggle span{background:var(--dark)}

/* === Buttons === */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;font-weight:700;font-size:1rem;border:none;border-radius:50px;transition:all .3s;text-decoration:none}
.btn-primary{background:var(--accent);color:var(--dark)}
.btn-primary:hover{background:var(--accent-hover);color:var(--dark);transform:translateY(-2px);box-shadow:0 4px 15px rgba(255,205,87,.4)}
.btn-outline-white{background:transparent;border:2px solid rgba(255,255,255,.7);color:#fff}
.btn-outline-white:hover{background:#fff;color:var(--dark)}
.btn-outline{background:transparent;border:2px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-sm{padding:10px 22px;font-size:.9rem}

/* === Hero === */
.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden;background:#000}
.hero-bg{position:absolute;inset:0;background-image:url('/images/hero-bg.jpg');background-size:cover;background-position:center;background-attachment:fixed;opacity:.5;transition:opacity .5s}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(6,0,151,.4) 0%,rgba(0,0,0,.3) 100%)}
.hero-content{position:relative;z-index:2;text-align:center;padding:120px 24px 40px;max-width:900px;width:100%}
.hero-badge{display:inline-block;padding:8px 20px;background:rgba(255,255,255,.15);backdrop-filter:blur(10px);border-radius:50px;color:#fff;font-size:.85rem;margin-bottom:24px;border:1px solid rgba(255,255,255,.2)}
.hero-logo{max-width:300px;margin:0 auto 16px}
.hero-tagline-img{max-width:280px;margin:0 auto 30px}
.hero h1{color:#fff;font-size:2.8rem;margin-bottom:16px;text-shadow:0 2px 20px rgba(0,0,0,.3)}
.hero p.hero-sub{color:rgba(255,255,255,.85);font-size:1.15rem;margin-bottom:36px;max-width:600px;margin-left:auto;margin-right:auto}
.hero-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* Slider */
.hero-slider{position:relative;z-index:2;width:100%;max-width:900px;padding:0 24px}
.slide{display:none;text-align:center;animation:fadeSlide .6s ease}
.slide.active{display:block}
@keyframes fadeSlide{from{opacity:0;transform:translateY(15px)}to{opacity:1;transform:translateY(0)}}
.slide-product img{max-width:450px;margin:0 auto}
.slide-product figcaption{color:#fff;font-size:1.05rem;font-weight:700;margin-top:12px}
.slider-dots{display:flex;justify-content:center;gap:8px;margin-top:24px;position:relative;z-index:2}
.slider-dots .dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.35);border:none;transition:all .3s}
.slider-dots .dot.active{background:#fff;transform:scale(1.2)}

/* Trust Bar */
.trust-bar{position:relative;z-index:2;padding:30px 24px 50px;display:flex;justify-content:center;gap:48px;flex-wrap:wrap}
.trust-item{text-align:center;color:#fff}
.trust-item .trust-number{font-size:2rem;font-weight:700;font-family:'NanumSquareB',sans-serif}
.trust-item .trust-label{font-size:.85rem;opacity:.8;margin-top:4px}

/* === Sections === */
.section{padding:80px 0}
.section-light{background:var(--light-bg)}
.section-gray{background:var(--gray)}
.section-dark{background:var(--dark);color:#fff}
.section-dark h2,.section-dark h3{color:#fff}
.section-dark p{color:rgba(255,255,255,.8)}
.section-header{text-align:center;margin-bottom:48px}
.section-header h2{font-size:2.2rem;margin-bottom:12px}
.section-header p{font-size:1.05rem;max-width:600px;margin:0 auto;color:var(--body)}
.section-badge{display:inline-block;padding:6px 16px;background:var(--light-bg);color:var(--primary);font-size:.8rem;font-weight:700;border-radius:50px;margin-bottom:12px;text-transform:uppercase;letter-spacing:1px}
.section-dark .section-badge{background:rgba(255,255,255,.1);color:var(--accent)}

/* === History === */
.history-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.history-image{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.history-image figcaption{background:var(--white);padding:20px;text-align:center}
.history-image figcaption strong{color:var(--dark);font-size:1rem}
.history-text h3{color:var(--blue);font-size:1.6rem;margin-bottom:16px}
.history-text p{margin-bottom:16px;line-height:1.9}

/* === Products === */
.products-showcase{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.product-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.product-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.product-card-img{padding:30px;background:var(--gray);text-align:center}
.product-card-img img{max-height:200px;margin:0 auto}
.product-card-body{padding:24px}
.product-card-body h3{font-size:1.2rem;margin-bottom:8px}
.product-card-body p{font-size:.9rem;margin-bottom:16px}
.product-card-body .product-tags{display:flex;flex-wrap:wrap;gap:6px}
.product-tag{display:inline-block;padding:4px 10px;background:var(--light-bg);color:var(--primary);font-size:.75rem;border-radius:50px;font-weight:700}

/* === Features === */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--white);border-radius:var(--radius);padding:36px 28px;text-align:center;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s;border:1px solid transparent}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary)}
.feature-icon{width:70px;height:70px;margin:0 auto 18px;background:linear-gradient(135deg,var(--light-bg),#e8e4ff);border-radius:50%;display:flex;align-items:center;justify-content:center}
.feature-icon svg{width:32px;height:32px;stroke:var(--primary)}
.feature-card h3{font-size:1.15rem;margin-bottom:10px;color:var(--blue)}
.feature-card p{font-size:.9rem;line-height:1.7}

/* === Science Section === */
.science-content{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.science-stats{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:24px}
.stat-box{background:var(--white);padding:20px;border-radius:var(--radius);text-align:center;box-shadow:var(--shadow)}
.stat-box .stat-num{font-size:2rem;font-weight:700;color:var(--primary);font-family:'NanumSquareB',sans-serif}
.stat-box .stat-label{font-size:.85rem;color:var(--body);margin-top:4px}

/* === Founder / Testimonial === */
.founder-section{text-align:center;max-width:800px;margin:0 auto}
.founder-photo{width:130px;height:170px;border-radius:50%;object-fit:cover;margin:0 auto 16px;border:4px solid var(--white);box-shadow:var(--shadow)}
.founder-name{font-weight:700;color:var(--dark);margin-bottom:20px;font-size:1.05rem}
.founder-quote{background:var(--white);padding:32px 40px;border-radius:var(--radius);box-shadow:var(--shadow);text-align:left;position:relative;font-size:1rem;line-height:2}
.founder-quote::before{content:"\201C";position:absolute;top:-5px;left:20px;font-size:4rem;color:var(--primary);opacity:.3;font-family:Georgia,serif;line-height:1}

/* === Inquiry Board === */
.board-container{max-width:900px;margin:0 auto}
.board-tabs{display:flex;gap:0;margin-bottom:24px;border-bottom:2px solid var(--gray)}
.board-tab{padding:12px 24px;background:none;border:none;font-size:.95rem;color:var(--body);font-weight:600;position:relative;transition:color .3s}
.board-tab.active{color:var(--primary)}
.board-tab.active::after{content:'';position:absolute;bottom:-2px;left:0;right:0;height:2px;background:var(--primary)}
.board-list{margin-bottom:24px}
.board-item{display:grid;grid-template-columns:60px 1fr 120px 100px;gap:16px;padding:14px 0;border-bottom:1px solid var(--gray);align-items:center;font-size:.9rem}
.board-item-no{color:var(--body);text-align:center;font-size:.85rem}
.board-item-title{color:var(--dark);font-weight:600;cursor:pointer;transition:color .2s}
.board-item-title:hover{color:var(--primary)}
.board-item-date{color:var(--body);font-size:.85rem}
.board-item-status{font-size:.8rem;padding:4px 10px;border-radius:50px;text-align:center;font-weight:600}
.status-waiting{background:#fef3c7;color:#92400e}
.status-complete{background:#d1fae5;color:#065f46}
.board-header{display:grid;grid-template-columns:60px 1fr 120px 100px;gap:16px;padding:10px 0;border-bottom:2px solid var(--dark);font-size:.85rem;font-weight:700;color:var(--dark)}

/* Inquiry Form */
.inquiry-form{background:var(--white);padding:36px;border-radius:var(--radius);box-shadow:var(--shadow)}
.form-row{display:flex;gap:16px;margin-bottom:0}
.form-group{flex:1;margin-bottom:18px}
.form-group label{display:block;font-weight:600;margin-bottom:6px;color:var(--dark);font-size:.9rem}
.form-group .required{color:var(--danger)}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:11px 14px;border:1px solid #dde;border-radius:8px;font-family:inherit;font-size:.9rem;transition:border-color .3s;background:#fafafa}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(6,0,151,.08)}
.form-group textarea{min-height:100px;resize:vertical}
.form-hint{font-size:.78rem;color:var(--body);margin-top:4px}

/* === Contact === */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.contact-info h3{color:var(--blue);font-size:1.4rem;margin-bottom:20px}
.contact-info-item{display:flex;align-items:flex-start;gap:14px;margin-bottom:18px}
.contact-info-item .ci-icon{width:44px;height:44px;background:var(--light-bg);border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.contact-info-item .ci-icon svg{width:20px;height:20px;stroke:var(--primary)}
.contact-info-item .ci-text strong{display:block;color:var(--dark);font-size:.9rem;margin-bottom:2px}
.contact-info-item .ci-text span{font-size:.88rem}

/* === Footer === */
.site-footer{background:#1a1a2e;color:rgba(255,255,255,.7)}
.footer-main{padding:60px 0 40px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-widget h4{color:#fff;font-size:1rem;margin-bottom:16px}
.footer-widget p{font-size:.88rem;line-height:1.8}
.footer-widget a{color:rgba(255,255,255,.7);font-size:.88rem;transition:color .3s}
.footer-widget a:hover{color:var(--accent)}
.footer-widget ul li{margin-bottom:8px}
.footer-logo{max-width:140px;margin-bottom:16px;filter:brightness(0) invert(1);opacity:.9}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;text-align:center}
.footer-bottom p{font-size:.78rem;color:rgba(255,255,255,.5)}

/* === Scroll Top === */
.scroll-top{position:fixed;bottom:24px;right:24px;width:44px;height:44px;background:var(--primary);color:#fff;border:none;border-radius:50%;display:none;align-items:center;justify-content:center;z-index:999;transition:all .3s;box-shadow:0 4px 12px rgba(6,0,151,.3)}
.scroll-top.visible{display:flex}
.scroll-top:hover{transform:translateY(-3px);background:var(--primary-light)}

/* === 404 === */
.page-404{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:40px}
.page-404 h1{font-size:6rem;color:var(--primary);margin-bottom:16px}
.page-404 p{font-size:1.2rem;margin-bottom:24px}

/* === Admin Page === */
.admin-container{max-width:1400px;margin:0 auto;padding:calc(var(--header-h) + 20px) 24px 40px}
.admin-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
.admin-header h1{font-size:1.8rem}
.admin-tabs{display:flex;gap:0;margin-bottom:24px;border-bottom:2px solid var(--gray);overflow-x:auto}
.admin-tab{padding:12px 20px;background:none;border:none;font-size:.9rem;font-weight:600;color:var(--body);white-space:nowrap;transition:color .3s;position:relative}
.admin-tab.active{color:var(--primary)}
.admin-tab.active::after{content:'';position:absolute;bottom:-2px;left:0;right:0;height:2px;background:var(--primary)}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}
.stat-card{background:var(--white);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);border-left:4px solid var(--primary)}
.stat-card h4{font-size:.85rem;color:var(--body);margin-bottom:8px;font-weight:600}
.stat-card .stat-value{font-size:1.8rem;font-weight:700;color:var(--dark);font-family:'NanumSquareB',sans-serif}
.stat-card .stat-sub{font-size:.8rem;color:var(--body);margin-top:4px}
.chart-container{background:var(--white);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);margin-bottom:24px}
.chart-container h3{font-size:1.1rem;margin-bottom:16px;color:var(--dark)}
.chart-row{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.data-table{width:100%;border-collapse:collapse;font-size:.88rem}
.data-table th{text-align:left;padding:10px 12px;background:var(--gray);color:var(--dark);font-weight:600;border-bottom:2px solid #ddd}
.data-table td{padding:10px 12px;border-bottom:1px solid var(--gray)}
.data-table tr:hover td{background:var(--light-bg)}
.admin-login{max-width:400px;margin:200px auto;text-align:center}
.admin-login input{width:100%;padding:12px;border:1px solid #ddd;border-radius:8px;margin-bottom:12px;font-size:1rem}

/* === Animations === */
.fade-in{opacity:0;transform:translateY(25px);transition:opacity .6s ease,transform .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}
.fade-in-left{opacity:0;transform:translateX(-30px);transition:opacity .6s ease,transform .6s ease}
.fade-in-left.visible{opacity:1;transform:translateX(0)}
.fade-in-right{opacity:0;transform:translateX(30px);transition:opacity .6s ease,transform .6s ease}
.fade-in-right.visible{opacity:1;transform:translateX(0)}

/* === Toast === */
.toast{position:fixed;top:20px;right:20px;padding:14px 24px;border-radius:var(--radius);color:#fff;font-size:.9rem;z-index:9999;transform:translateX(120%);transition:transform .3s;box-shadow:var(--shadow-lg)}
.toast.show{transform:translateX(0)}
.toast-success{background:var(--success)}
.toast-error{background:var(--danger)}

/* === Modal === */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:2000;display:none;align-items:center;justify-content:center}
.modal-overlay.open{display:flex}
.modal{background:var(--white);border-radius:var(--radius);max-width:700px;width:90%;max-height:80vh;overflow-y:auto;padding:32px}
.modal h3{margin-bottom:20px}
.modal-close{float:right;background:none;border:none;font-size:1.5rem;color:var(--body);padding:4px 8px}

/* === Responsive === */
@media(max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .history-grid,.science-content,.contact-grid{grid-template-columns:1fr}
  .chart-row{grid-template-columns:1fr}
}
@media(max-width:768px){
  .menu-toggle{display:block}
  .main-nav{position:fixed;top:0;right:-300px;width:280px;height:100vh;background:var(--white);flex-direction:column;padding:80px 0 20px;transition:right .3s;box-shadow:-5px 0 20px rgba(0,0,0,.1);z-index:1001;overflow-y:auto}
  .main-nav.open{right:0}
  .main-nav ul{flex-direction:column;width:100%}
  .main-nav ul li a{color:var(--dark);padding:14px 24px;border-bottom:1px solid var(--gray)}
  .nav-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:1000}
  .nav-overlay.active{display:block}
  .hero{min-height:90vh}
  .hero-bg{background-attachment:scroll}
  .hero h1{font-size:1.8rem}
  .hero p.hero-sub{font-size:1rem}
  .section{padding:50px 0}
  .section-header h2{font-size:1.6rem}
  .features-grid{grid-template-columns:1fr}
  .products-showcase{grid-template-columns:1fr}
  .form-row{flex-direction:column;gap:0}
  .footer-grid{grid-template-columns:1fr;text-align:center}
  .board-item{grid-template-columns:40px 1fr 80px 70px;gap:8px;font-size:.82rem}
  .board-header{grid-template-columns:40px 1fr 80px 70px;gap:8px;font-size:.82rem}
  .trust-bar{gap:24px}
  .hero-logo{max-width:220px}
  .btn{padding:12px 24px;font-size:.9rem}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
  .trust-bar{flex-direction:column;gap:16px}
  .stats-grid{grid-template-columns:1fr}
}