/*
Theme Name: Interior Folding Door
Description: 인테리어폴딩도어 시공 전문 사이트
Author: YK시스템창호
Version: 1.0
Text Domain: interiorfoldingdoor
*/

/* ===== Tokens ===== */
:root{
	--bg:#ffffff;
	--bg-alt:#f6f5f1;
	--ink:#15171c;
	--ink-soft:#585b62;
	--ink-faint:#8b8e94;
	--line:#e6e4de;
	--accent:#173350;
	--accent-hover:#0e2438;
	--accent-soft:#eef2f5;
	--radius:2px;
	--container:1440px;
	--gap-page: clamp(20px, 5vw, 64px);
}

/* ===== Reset ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;overflow-x:hidden;}
body{
	margin:0;
	overflow-x:hidden;
	font-family:'Noto Sans KR', -apple-system, sans-serif;
	color:var(--ink);
	background:var(--bg);
	line-height:1.7;
	-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,p{margin:0;}
button{font:inherit;background:none;border:none;cursor:pointer;padding:0;}
table{border-collapse:collapse;width:100%;}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;}

h1,h2,h3{font-weight:800;letter-spacing:-0.02em;color:var(--ink);}
p{color:var(--ink-soft);}

.eyebrow{
	font-size:13px;
	font-weight:700;
	letter-spacing:.14em;
	text-transform:uppercase;
	color:var(--accent);
	margin:0 0 14px;
}

.link-arrow{
	display:inline-flex;align-items:center;gap:8px;
	font-weight:700;font-size:15px;color:var(--ink);
	border-bottom:1px solid var(--ink);
	padding-bottom:2px;
}
.link-arrow::after{content:"→";}

/* ===== Buttons ===== */
.btn{
	display:inline-flex;align-items:center;justify-content:center;
	padding:14px 26px;
	font-weight:700;font-size:15px;
	border-radius:var(--radius);
	border:1px solid transparent;
	white-space:nowrap;
}
.btn--call{background:var(--accent);color:#fff;}
.btn--call:hover{background:var(--accent-hover);}
.btn--sms{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn--sms:hover{background:var(--ink);color:#fff;}
.btn--lg{padding:18px 34px;font-size:16px;}

/* ===== Header ===== */
.site-header{
	position:sticky;top:0;z-index:50;width:100%;max-width:100vw;
	background:rgba(255,255,255,.94);
	backdrop-filter:blur(8px);
	border-bottom:1px solid var(--line);
}
.site-header__inner{
	max-width:var(--container);margin:0 auto;
	padding:16px var(--gap-page);
	display:flex;align-items:center;gap:32px;
}
.site-brand{display:flex;flex-direction:column;line-height:1.2;margin-right:auto;}
.site-brand__name{font-weight:800;font-size:17px;letter-spacing:-.01em;}
.site-brand__sub{font-size:12px;color:var(--ink-faint);}
.site-nav{display:flex;align-items:center;gap:28px;}
.site-nav a{font-weight:600;font-size:15px;}
.site-header__cta{display:flex;gap:10px;}
.site-header__cta .btn{padding:10px 18px;font-size:14px;}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:32px;height:32px;}
.nav-toggle span{display:block;width:100%;height:2px;background:var(--ink);}

/* ===== Hero ===== */
.hero{
	display:grid;grid-template-columns:.85fr 1.15fr;
	align-items:stretch;
	min-height:calc(100vh - 69px);
}
.hero__text{
	display:flex;flex-direction:column;justify-content:center;
	padding:48px var(--gap-page);
	max-width:640px;
}
.hero__text h1{font-size:clamp(44px,6vw,96px);line-height:.98;margin-bottom:22px;}
.hero__lead{font-size:clamp(16px,1.6vw,19px);line-height:1.75;margin-bottom:32px;max-width:46ch;}
.hero__cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:20px;}
.hero__area{font-size:13px;color:var(--ink-faint);}
.hero__media{position:relative;min-height:340px;overflow:hidden;background:var(--bg-alt);}
.hero__img{width:100%;height:100%;object-fit:cover;}

/* ===== Intro ===== */
.intro{padding:clamp(72px,10vw,140px) var(--gap-page);}
.intro__inner{max-width:900px;margin:0 auto;text-align:center;}
.intro h2{font-size:clamp(26px,3.2vw,42px);margin-bottom:24px;}
.intro p{font-size:clamp(16px,1.6vw,19px);line-height:1.85;}

/* ===== Full-bleed feature media ===== */
.feature-media{position:relative;}
.feature-media__img{width:100%;height:clamp(320px,60vw,640px);object-fit:cover;}
.feature-media__caption{
	position:absolute;left:var(--gap-page);bottom:24px;
	color:#fff;font-size:14px;font-weight:600;
	background:rgba(15,17,20,.55);padding:8px 14px;backdrop-filter:blur(4px);
}

/* ===== Section heading common ===== */
.spaces > h2, .types > h2, .checklist h2, .projects__head h2, .faq > h2, .content-block h2{
	font-size:clamp(26px,3.2vw,42px);
}
.spaces, .types, .checklist, .projects, .faq{
	padding:clamp(64px,9vw,120px) var(--gap-page);
	max-width:var(--container);margin:0 auto;
}
.spaces > h2, .types > h2, .faq > h2{margin-bottom:44px;max-width:20ch;}

/* ===== Spaces (2-col editorial) ===== */
.spaces{background:transparent;}
.spaces__grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,56px);}
.spaces__media{aspect-ratio:4/5;overflow:hidden;background:var(--bg-alt);margin-bottom:24px;}
.spaces__img{width:100%;height:100%;object-fit:cover;}
.spaces__text h3{font-size:clamp(20px,2.2vw,26px);margin-bottom:12px;}
.spaces__text p{font-size:15.5px;}

/* ===== Types ===== */
.types{background:var(--bg-alt);}
.types__grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,56px);margin-bottom:32px;}
.types__img{aspect-ratio:3/2;object-fit:cover;width:100%;height:auto;margin-bottom:20px;}
.types__item h3{font-size:20px;margin-bottom:10px;}
.types__item p{font-size:15px;}

/* ===== Content block (image + text, alternating) ===== */
.content-block{
	display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(28px,5vw,72px);
	align-items:center;
	padding:clamp(56px,8vw,110px) var(--gap-page);
	max-width:var(--container);margin:0 auto;
}
.content-block--reverse{grid-template-columns:.9fr 1.1fr;}
.content-block--reverse .content-block__img{order:2;}
.content-block__img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;background:var(--bg-alt);}
.content-block__text h2{font-size:clamp(24px,2.8vw,36px);margin-bottom:18px;}
.content-block__text p{font-size:16px;margin-bottom:14px;}

/* ===== Checklist ===== */
.checklist{background:var(--bg-alt);}
.checklist--alt{background:var(--bg);}
.checklist__inner{max-width:900px;margin:0 auto;}
.checklist h2{margin-bottom:16px;}
.checklist > .checklist__inner > p{margin-bottom:24px;font-size:16px;}
.checklist ul{display:flex;flex-direction:column;gap:12px;}
.checklist ul li{
	position:relative;padding-left:24px;font-size:16px;color:var(--ink);
}
.checklist ul li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:8px;background:var(--accent);}

.table{margin-top:8px;}
.table th,.table td{
	text-align:left;padding:14px 16px;border-bottom:1px solid var(--line);
	font-size:15px;
}
.table th{color:var(--ink-faint);font-weight:700;width:28%;}
.table td{color:var(--ink);}

/* ===== Projects (asymmetric mosaic) ===== */
.projects__head{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin-bottom:36px;flex-wrap:wrap;}
.projects__head h2{margin:0;}
.projects__grid{display:grid;grid-template-columns:repeat(12,1fr);gap:18px;}
.projects__item{position:relative;display:block;overflow:hidden;background:var(--bg-alt);}
.projects__item--0{grid-column:span 7;aspect-ratio:5/4;}
.projects__item--1{grid-column:span 5;aspect-ratio:5/4;}
.projects__item--2{grid-column:span 4;aspect-ratio:4/5;}
.projects__item--3{grid-column:span 4;aspect-ratio:4/5;}
.projects__item--4{grid-column:span 4;aspect-ratio:4/5;}
.projects__img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.projects__item:hover .projects__img{transform:scale(1.04);}
.projects__meta{
	position:absolute;left:0;right:0;bottom:0;padding:22px;
	background:linear-gradient(to top, rgba(10,11,14,.72), transparent 70%);
	color:#fff;display:flex;flex-direction:column;gap:6px;
}
.projects__space{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;opacity:.85;}
.projects__title{font-size:clamp(16px,1.8vw,22px);font-weight:800;}

/* ===== FAQ ===== */
.faq__list{display:flex;flex-direction:column;}
.faq__item{padding:26px 0;border-top:1px solid var(--line);}
.faq__item:last-child{border-bottom:1px solid var(--line);}
.faq__item h3{font-size:17px;margin-bottom:10px;}
.faq__item p{font-size:15.5px;}

/* ===== CTA band ===== */
.cta-band{
	background:var(--accent);color:#fff;
	padding:clamp(64px,9vw,120px) var(--gap-page);
	text-align:center;
}
.cta-band h2{color:#fff;font-size:clamp(26px,3.4vw,44px);margin-bottom:16px;}
.cta-band p{color:rgba(255,255,255,.78);font-size:16px;margin-bottom:32px;}
.cta-band__buttons{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}
.cta-band .btn--call{background:#fff;color:var(--accent);}
.cta-band .btn--call:hover{background:rgba(255,255,255,.88);}
.cta-band .btn--sms{border-color:rgba(255,255,255,.6);color:#fff;}
.cta-band .btn--sms:hover{background:rgba(255,255,255,.12);}

/* ===== Footer ===== */
.site-footer{border-top:1px solid var(--line);padding:48px var(--gap-page) 96px;}
.site-footer__inner{max-width:var(--container);margin:0 auto;}
.site-footer__name{font-weight:800;font-size:16px;margin-bottom:8px;}
.site-footer__nap{font-size:13.5px;color:var(--ink-faint);margin-bottom:24px;}
.site-footer__nav{display:flex;flex-wrap:wrap;gap:20px;margin-bottom:20px;}
.site-footer__nav a{font-size:14px;color:var(--ink-soft);}
.site-footer__copy{font-size:12.5px;color:var(--ink-faint);}

/* ===== Mobile CTA bar ===== */
.mobile-cta-bar{display:none;}

/* ===== Subpages ===== */
.subpage{max-width:var(--container);margin:0 auto;padding:0 var(--gap-page);}
.breadcrumb{
	display:flex;gap:8px;align-items:center;
	padding:20px 0;font-size:13px;color:var(--ink-faint);
	max-width:var(--container);margin:0 auto;padding-left:var(--gap-page);padding-right:var(--gap-page);
}
.breadcrumb a{color:var(--ink-faint);}
.breadcrumb span{opacity:.6;}
.subhero{padding:24px 0 clamp(40px,6vw,72px);max-width:900px;}
.subhero h1{font-size:clamp(34px,5vw,64px);margin-bottom:20px;}
.subhero__lead{font-size:clamp(16px,1.6vw,19px);}

/* ===== Case list ===== */
.case-list{display:flex;flex-direction:column;padding-bottom:80px;}
.case-list__item{
	display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(24px,4vw,64px);
	align-items:center;padding:40px 0;border-top:1px solid var(--line);
}
.case-list__item:last-child{border-bottom:1px solid var(--line);}
.case-list__item:nth-child(even){grid-template-columns:1.1fr .9fr;}
.case-list__item:nth-child(even) .case-list__media{order:2;}
.case-list__media{aspect-ratio:4/3;overflow:hidden;background:var(--bg-alt);}
.case-list__img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.case-list__item:hover .case-list__img{transform:scale(1.03);}
.case-list__text h2{font-size:clamp(20px,2.4vw,28px);margin:6px 0 12px;}
.case-list__text p{font-size:15.5px;margin-bottom:16px;}

/* ===== Case detail ===== */
.case-detail{padding:8px 0 40px;max-width:1080px;margin:0 auto;}
.case-detail__head{max-width:760px;margin-bottom:32px;}
.case-detail__head h1{font-size:clamp(30px,4.5vw,52px);margin:8px 0 18px;}
.case-detail__summary{font-size:17px;}
.case-detail__hero-img{width:100%;max-height:640px;object-fit:cover;margin-bottom:36px;background:var(--bg-alt);}
.case-detail__body{max-width:760px;margin-bottom:40px;}
.case-detail__body p{font-size:16.5px;line-height:1.85;color:var(--ink);}
.case-detail__gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.case-detail__gallery-item{aspect-ratio:1/1;overflow:hidden;background:var(--bg-alt);}
.case-detail__gallery-img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.case-detail__gallery-item:hover .case-detail__gallery-img{transform:scale(1.05);}

.case-nav{
	max-width:var(--container);margin:0 auto;padding:48px 0 80px;
	display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px;
	border-top:1px solid var(--line);
}
.case-nav__next{display:flex;flex-direction:column;gap:6px;}
.case-nav__title{font-size:20px;font-weight:800;}

/* ===== Lightbox ===== */
.lightbox{
	position:fixed;inset:0;background:rgba(10,11,14,.92);
	display:none;align-items:center;justify-content:center;z-index:200;padding:32px;
}
.lightbox.is-open{display:flex;}
.lightbox__img{max-width:100%;max-height:88vh;object-fit:contain;}
.lightbox__close{
	position:absolute;top:20px;right:24px;color:#fff;font-size:32px;line-height:1;
}

/* ===================== Tablet ===================== */
@media (max-width:1024px){
	.hero{grid-template-columns:1fr;min-height:auto;}
	.hero__text{max-width:none;padding:56px var(--gap-page) 32px;}
	.hero__media{min-height:420px;}
	.spaces__grid,.types__grid,.content-block{grid-template-columns:1fr;}
	.content-block--reverse .content-block__img{order:0;}
	.content-block{gap:24px;}
	.projects__item--0{grid-column:span 12;aspect-ratio:16/9;}
	.projects__item--1{grid-column:span 12;aspect-ratio:16/9;}
	.projects__item--2,.projects__item--3,.projects__item--4{grid-column:span 6;aspect-ratio:4/3;}
	.case-list__item,.case-list__item:nth-child(even){grid-template-columns:1fr;}
	.case-list__item .case-list__media,.case-list__item:nth-child(even) .case-list__media{order:0;}
	.case-detail__gallery{grid-template-columns:repeat(2,1fr);}
}

/* ===================== Mobile ===================== */
@media (max-width:768px){
	.site-header__inner{padding:14px 20px;}
	.site-nav,.site-header__cta{
		position:absolute;top:100%;left:0;right:0;
		background:#fff;border-bottom:1px solid var(--line);
		flex-direction:column;align-items:flex-start;
		padding:0 20px;max-height:0;overflow:hidden;
		transition:max-height .25s ease, padding .25s ease;
	}
	.site-header__cta{flex-direction:row;gap:10px;}
	.site-header.is-open .site-nav{max-height:280px;padding:16px 20px 8px;gap:18px;}
	.site-header.is-open .site-header__cta{max-height:80px;padding:0 20px 20px;}
	.nav-toggle{display:flex;}

	.hero__text{padding:40px 20px 28px;}
	.hero__media{min-height:280px;}
	.hero__cta{flex-direction:column;align-items:stretch;}
	.hero__cta .btn{width:100%;}

	.intro,.spaces,.types,.checklist,.projects,.faq,.content-block,.cta-band{padding-left:20px;padding-right:20px;}
	.subpage,.breadcrumb{padding-left:20px;padding-right:20px;}

	.spaces__grid,.types__grid{gap:40px;}
	.projects__grid{gap:10px;}
	.projects__item--0,.projects__item--1{grid-column:span 12;}
	.projects__item--2,.projects__item--3,.projects__item--4{grid-column:span 12;aspect-ratio:4/3;}

	.cta-band__buttons{flex-direction:column;}
	.cta-band__buttons .btn{width:100%;}

	.case-detail__gallery{grid-template-columns:repeat(2,1fr);}
	.case-nav{padding-bottom:120px;}

	.mobile-cta-bar{
		display:flex;position:fixed;left:0;right:0;bottom:0;width:100%;max-width:100vw;z-index:60;
		border-top:1px solid var(--line);background:#fff;
	}
	.mobile-cta-bar__btn{
		flex:1;display:flex;align-items:center;justify-content:center;gap:8px;
		padding:16px 0;font-weight:700;font-size:14.5px;
	}
	.mobile-cta-bar__btn--call{background:var(--accent);color:#fff;}
	.mobile-cta-bar__btn--sms{color:var(--ink);}
	.site-footer{padding-bottom:110px;}
}

@media (max-width:480px){
	.hero__text h1{font-size:clamp(38px,11vw,56px);}
	.subhero h1{font-size:clamp(30px,9vw,44px);}
	.case-detail__gallery{grid-template-columns:repeat(2,1fr);gap:8px;}
}