/*
Theme Name: SashCost
Theme URI: https://sashicost.zibsuri.com/
Description: 샷시 교체 비용 비교 가이드 전용 테마 — 프리미엄 정보 플랫폼 디자인 시스템.
Version: 1.0.0
Author: SashCost
Text Domain: sashicost
*/

/* ============ Design Tokens ============ */
:root{
  --c-navy:#12305C;
  --c-navy-dark:#0B1F3F;
  --c-navy-soft:#EEF3FA;
  --c-blue:#3B82F6;
  --c-blue-soft:#E8F1FE;
  --c-amber:#F59E0B;
  --c-amber-soft:#FEF3E2;
  --c-bg:#F8FAFD;
  --c-surface:#FFFFFF;
  --c-text:#16233B;
  --c-muted:#5C6B84;
  --c-border:#DCE4F0;
  --c-border-strong:#C3CFE1;
  --radius-s:8px;
  --radius-m:12px;
  --radius-l:16px;
  --radius-xl:24px;
  --shadow-s:0 1px 2px rgba(18,48,92,.06);
  --shadow-m:0 8px 24px rgba(18,48,92,.08);
  --shadow-l:0 18px 48px rgba(18,48,92,.14);
  --font-sans:'Pretendard Variable',Pretendard,-apple-system,'Apple SD Gothic Neo','Noto Sans KR','Malgun Gothic',sans-serif;
  --font-serif:'Noto Serif KR',Georgia,'Times New Roman',serif;
  --space-1:8px; --space-2:16px; --space-3:24px; --space-4:32px; --space-5:40px;
  --space-6:48px; --space-7:64px; --space-8:80px; --space-9:104px; --space-10:128px;
  --container:1140px;
  --content-max:760px;
  --transition:160ms ease;
}

/* ============ Reset / Base ============ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  font-size:16px;line-height:1.7;letter-spacing:-0.01em;
  color:var(--c-text);background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-blue);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--c-navy)}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--c-navy);letter-spacing:-0.02em;line-height:1.35;font-weight:700}
.container{max-width:var(--container);margin:0 auto;padding:0 var(--space-3)}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-navy);color:#fff;padding:12px 20px;border-radius:0 0 12px 0;z-index:200}
.skip-link:focus{left:0;color:#fff}
:focus-visible{outline:3px solid var(--c-blue);outline-offset:2px;border-radius:4px}
::selection{background:var(--c-blue-soft);color:var(--c-navy)}

/* ============ Header ============ */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--c-border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--c-navy);font-size:17px;letter-spacing:-0.02em}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--c-navy);display:flex;align-items:center;justify-content:center;flex:none;box-shadow:var(--shadow-s)}
.brand-mark svg{width:22px;height:22px}
.brand small{display:block;font-size:11px;font-weight:600;color:var(--c-muted);letter-spacing:0}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{padding:10px 14px;border-radius:10px;font-size:14.5px;font-weight:600;color:var(--c-text)}
.main-nav a:hover{background:var(--c-navy-soft);color:var(--c-navy)}
.main-nav .nav-cta{background:var(--c-navy);color:#fff;padding:10px 18px}
.main-nav .nav-cta:hover{background:var(--c-navy-dark);color:#fff}
.nav-toggle{display:none;background:none;border:0;width:44px;height:44px;border-radius:10px;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--c-navy);border-radius:2px;transition:transform var(--transition),opacity var(--transition)}

/* ============ Buttons ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 26px;border-radius:14px;font-weight:700;font-size:15.5px;border:1px solid transparent;transition:all var(--transition);min-height:48px}
.btn-primary{background:var(--c-navy);color:#fff}
.btn-primary:hover{background:var(--c-navy-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-m)}
.btn-accent{background:var(--c-blue);color:#fff}
.btn-accent:hover{background:#2563EB;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-m)}
.btn-ghost{background:#fff;color:var(--c-navy);border-color:var(--c-border-strong)}
.btn-ghost:hover{border-color:var(--c-blue);color:var(--c-blue);transform:translateY(-2px)}
.btn-lg{padding:18px 32px;font-size:16.5px}

/* ============ Hero (html.php) ============ */
.hero{position:relative;background:var(--c-navy);overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(11,31,63,.97) 0%,rgba(18,48,92,.82) 46%,rgba(18,48,92,.35) 100%)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:var(--space-6);align-items:center;padding:var(--space-9) 0 var(--space-8)}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);color:#C7D6F2;font-size:13px;font-weight:700;padding:8px 16px;border-radius:999px;margin-bottom:var(--space-3);backdrop-filter:blur(6px)}
.hero h1{color:#fff;font-size:clamp(34px,4.6vw,56px);line-height:1.22;margin-bottom:var(--space-3);letter-spacing:-0.03em}
.hero-sub{color:#C9D6EA;font-size:17px;line-height:1.75;max-width:560px;margin-bottom:var(--space-4)}
.hero-sub strong{color:#fff;font-weight:700}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-stats{display:flex;gap:var(--space-4);margin-top:var(--space-5);flex-wrap:wrap}
.hero-stat{padding-right:var(--space-4);border-right:1px solid rgba(255,255,255,.18)}
.hero-stat:last-child{border-right:0}
.hero-stat b{display:block;font-size:22px;color:#fff;font-family:var(--font-serif)}
.hero-stat span{font-size:12.5px;color:#9FB3D4}
.hero-visual{position:relative}
.hero-visual img{border-radius:var(--radius-xl);box-shadow:var(--shadow-l);aspect-ratio:4/3;object-fit:cover;width:100%}
.hero-visual::after{content:"";position:absolute;inset:0;border-radius:var(--radius-xl);box-shadow:inset 0 0 0 1px rgba(255,255,255,.14)}

/* ============ Sections ============ */
.section{padding:var(--space-8) 0}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border)}
.section-head{max-width:680px;margin-bottom:var(--space-5)}
.section-kicker{display:inline-block;font-size:12.5px;font-weight:800;color:var(--c-blue);letter-spacing:.02em;margin-bottom:10px}
.section-head h2{font-size:clamp(26px,3.2vw,36px);margin-bottom:12px}
.section-head p{color:var(--c-muted);font-size:15.5px;line-height:1.75}

/* ============ Carousel (ItemList) ============ */
.carousel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-3)}
.carousel-card{position:relative;border-radius:var(--radius-l);overflow:hidden;background:var(--c-surface);border:1px solid var(--c-border);box-shadow:var(--shadow-s);display:block;transition:transform var(--transition),box-shadow var(--transition)}
.carousel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
.carousel-card .c-img{position:relative;aspect-ratio:16/10;overflow:hidden}
.carousel-card .c-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.carousel-card:hover .c-img img{transform:scale(1.04)}
.carousel-card .c-tag{position:absolute;left:14px;top:14px;background:rgba(18,48,92,.85);color:#fff;font-size:11.5px;font-weight:700;padding:6px 12px;border-radius:999px;backdrop-filter:blur(4px)}
.carousel-card .c-body{padding:18px 20px 20px}
.carousel-card h3{font-size:17.5px;margin-bottom:6px;color:var(--c-navy)}
.carousel-card .c-desc{font-size:13.5px;color:var(--c-muted);line-height:1.65;margin-bottom:12px}
.carousel-card .c-more{font-size:13px;font-weight:700;color:var(--c-blue)}

/* ============ Cost structure cards ============ */
.cost-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-3)}
.cost-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-l);padding:var(--space-4);box-shadow:var(--shadow-s);transition:transform var(--transition),box-shadow var(--transition)}
.cost-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
.cost-card .cc-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.cost-card .cc-icon svg{width:22px;height:22px}
.cost-card h3{font-size:16.5px;margin-bottom:8px}
.cost-card p{font-size:13.5px;color:var(--c-muted);line-height:1.7}
.cc-navy{background:var(--c-navy-soft);color:var(--c-navy)}
.cc-blue{background:var(--c-blue-soft);color:var(--c-blue)}
.cc-amber{background:var(--c-amber-soft);color:var(--c-amber)}

/* ============ Split section (image + content) ============ */
.split-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-6);align-items:center}
.split-grid .s-img{border-radius:var(--radius-l);box-shadow:var(--shadow-m);overflow:hidden}
.split-grid .s-img img{aspect-ratio:4/3;object-fit:cover;width:100%}
.check-list{list-style:none;display:grid;gap:12px;margin-top:var(--space-3)}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.65}
.check-list .chk{flex:none;width:22px;height:22px;border-radius:7px;background:var(--c-blue-soft);color:var(--c-blue);display:flex;align-items:center;justify-content:center;margin-top:2px;font-weight:800;font-size:12px}

/* ============ Latest posts grid ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-3)}
.post-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-l);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-s);transition:transform var(--transition),box-shadow var(--transition)}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
.post-card .thumb{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:var(--c-navy-soft)}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.post-card:hover .thumb img{transform:scale(1.04)}
.post-card .thumb .cat{position:absolute;left:12px;top:12px;background:var(--c-amber);color:var(--c-navy);font-size:11px;font-weight:800;padding:5px 11px;border-radius:999px}
.post-card .p-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.post-card h3{font-size:16.5px;line-height:1.45;margin:0}
.post-card h3 a{color:var(--c-navy)}
.post-card h3 a:hover{color:var(--c-blue)}
.post-card .p-ex{font-size:13.5px;color:var(--c-muted);line-height:1.65;flex:1}
.post-card .p-meta{display:flex;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--c-muted)}
.post-card .read-more{font-size:13px;font-weight:700;color:var(--c-blue)}

/* ============ Single article ============ */
.article-wrap{padding:var(--space-6) 0 var(--space-8)}
.breadcrumbs{font-size:13px;color:var(--c-muted);margin-bottom:16px}
.breadcrumbs a{color:var(--c-muted)}
.breadcrumbs a:hover{color:var(--c-blue)}
.article-hero{margin-bottom:var(--space-4)}
.cat-badge{display:inline-block;background:var(--c-amber);color:var(--c-navy);font-size:12px;font-weight:800;padding:6px 13px;border-radius:999px;margin-bottom:14px}
.article-hero h1{font-size:clamp(28px,3.6vw,42px);line-height:1.3;margin-bottom:12px}
.article-hero .meta{display:flex;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--c-muted);margin-bottom:var(--space-3)}
.article-hero .meta span{border-left:1px solid var(--c-border-strong);padding-left:14px}
.article-hero .meta span:first-child{border-left:0;padding-left:0}
.article-hero .thumb{border-radius:var(--radius-l);overflow:hidden;box-shadow:var(--shadow-m)}
.article-hero .thumb img{width:100%;aspect-ratio:16/8;object-fit:cover}
.article-content{max-width:var(--content-max);margin:0 auto;font-size:16.5px;line-height:1.8;color:var(--c-text)}
.article-content h2{font-size:24px;margin:var(--space-6) 0 var(--space-3);padding-top:var(--space-2);position:relative}
.article-content h2::before{content:"";display:block;width:34px;height:4px;border-radius:99px;background:var(--c-amber);margin-bottom:14px}
.article-content h3{font-size:18.5px;margin:var(--space-4) 0 12px;color:var(--c-navy)}
.article-content p{margin-bottom:1.25em}
.article-content ul,.article-content ol{margin:0 0 1.4em;padding-left:1.4em;display:grid;gap:8px}
.article-content li{line-height:1.75}
.article-content a{font-weight:600;text-decoration:underline;text-underline-offset:3px}
.article-content blockquote,.article-content .callout{margin:1.6em 0;padding:18px 20px;background:var(--c-blue-soft);border-left:4px solid var(--c-blue);border-radius:0 var(--radius-m) var(--radius-m) 0;font-size:15.5px;line-height:1.7;color:var(--c-navy)}
.article-content blockquote p,.article-content .callout p{margin:0}
.article-content .summary-box{margin:1.6em 0;padding:18px 20px;background:var(--c-navy);color:#DCE7F8;border-radius:var(--radius-m);font-size:14.5px;line-height:1.75}
.article-content .summary-box strong{color:#fff}
.article-content .summary-box li{color:#DCE7F8}
.summary-title{display:block;font-weight:800;color:#fff;margin-bottom:8px;font-size:14px}

/* content images */
.content-img{margin:1.8em 0;border-radius:var(--radius-l);overflow:hidden;box-shadow:var(--shadow-m)}
.content-img img{width:100%}
figure.content-img figcaption,figure.content-figure figcaption{font-size:12.5px;color:var(--c-muted);text-align:center;padding:10px 12px;background:var(--c-surface);border-top:1px solid var(--c-border)}
.content-figure{margin:1.8em 0}
.content-figure img{border-radius:var(--radius-l);box-shadow:var(--shadow-m);width:100%}

/* tables */
.table-wrap{overflow-x:auto;margin:1.6em 0;border:1px solid var(--c-border);border-radius:var(--radius-m);box-shadow:var(--shadow-s)}
.table-wrap table{width:100%;border-collapse:collapse;min-width:560px;font-size:14.5px}
.table-wrap th,.table-wrap td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--c-border);vertical-align:top;line-height:1.6}
.table-wrap thead th{background:var(--c-navy);color:#fff;font-weight:700;font-size:13.5px;white-space:nowrap}
.table-wrap tbody tr:nth-child(even) td{background:#FAFCFE}
.table-wrap tbody tr:last-child td{border-bottom:0}
.table-wrap .num{white-space:nowrap;font-variant-numeric:tabular-nums;font-weight:600}

/* charts (inline CSS) */
.chart-bars{display:grid;gap:10px;margin:1.6em 0}
.bar-row{display:grid;grid-template-columns:110px 1fr;gap:12px;align-items:center}
.bar-label{font-size:13.5px;font-weight:700;color:var(--c-navy);text-align:right}
.bar-track{background:var(--c-navy-soft);border-radius:999px;height:32px;overflow:hidden}
.bar-fill{background:linear-gradient(90deg,var(--c-navy),var(--c-blue));height:100%;border-radius:999px;display:flex;align-items:center;justify-content:flex-end;padding-right:12px;color:#fff;font-size:12.5px;font-weight:800;min-width:44px}
.bar-fill.amber{background:linear-gradient(90deg,#D97706,var(--c-amber))}
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;position:relative;margin:1.8em 0}
.tl-item{display:flex;flex-direction:column;gap:8px;text-align:center;font-size:12.5px;color:var(--c-muted);position:relative}
.tl-item strong{color:var(--c-navy);font-size:13px}
.tl-dot{width:14px;height:14px;border-radius:50%;background:var(--c-blue);margin:0 auto;box-shadow:0 0 0 4px var(--c-blue-soft)}
.tl-item::before{content:"";position:absolute;top:6px;left:-50%;width:100%;height:2px;background:var(--c-border-strong);z-index:-1}
.tl-item:first-child::before{display:none}
.step-list{counter-reset:step;list-style:none;padding-left:0;display:grid;gap:14px;margin:1.6em 0}
.step-list li{counter-increment:step;display:grid;grid-template-columns:34px 1fr;gap:14px;align-items:flex-start}
.step-list li::before{content:counter(step);width:34px;height:34px;border-radius:10px;background:var(--c-navy);color:#fff;font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center;font-family:var(--font-serif)}

/* legal / ai notices */
.legal-notice{font-size:14px;color:var(--c-muted);background:var(--c-navy-soft);border-left:3px solid var(--c-border-strong);padding:14px 16px;border-radius:0 12px 12px 0;line-height:1.7;margin-top:2.2em}
.ai-notice{font-size:13px;color:#98A8B2;margin-top:1.4em}

/* related */
.related-posts{margin-top:var(--space-7);max-width:var(--content-max);margin-left:auto;margin-right:auto}
.related-posts h2{font-size:22px;margin-bottom:var(--space-3)}

/* ============ Pages ============ */
.page-hero{background:var(--c-navy-soft);padding:var(--space-7) 0;border-bottom:1px solid var(--c-border)}
.page-hero h1{font-size:clamp(28px,3.4vw,40px)}
.page-hero p{color:var(--c-muted);margin-top:8px;max-width:640px}
.page-body{max-width:var(--content-max);margin:0 auto;padding:var(--space-6) 0 var(--space-8);font-size:16px;line-height:1.8}
.page-body h2{font-size:21px;margin:var(--space-4) 0 12px}
.page-body h3{font-size:17px;margin:var(--space-3) 0 10px}
.page-body p{margin-bottom:1.1em}
.page-body ul,.page-body ol{margin:0 0 1.2em;padding-left:1.4em;display:grid;gap:6px}

/* ============ Archive / index ============ */
.archive-head{padding:var(--space-6) 0 var(--space-3)}
.archive-head h1{font-size:clamp(26px,3.2vw,36px)}
.archive-head p{color:var(--c-muted);margin-top:8px;max-width:640px}
.archive-grid{padding-bottom:var(--space-8)}
.pagination{display:flex;gap:8px;margin-top:var(--space-5);justify-content:center}
.pagination .page-numbers{border:1px solid var(--c-border-strong);background:#fff;border-radius:10px;min-width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 14px;font-weight:700;color:var(--c-text)}
.pagination .page-numbers.current{background:var(--c-navy);border-color:var(--c-navy);color:#fff}

/* ============ Footer ============ */
.site-footer{background:var(--c-navy-dark);color:#B9CBD4;padding:var(--space-7) 0 var(--space-4);font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:var(--space-5);margin-bottom:var(--space-5)}
.footer-brand{font-family:var(--font-serif);font-size:19px;font-weight:700;color:#fff;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.footer-brand .brand-mark{background:rgba(255,255,255,.08)}
.footer-desc{color:#93AAB6;line-height:1.75;font-size:13.5px;max-width:360px}
.footer-col h4{color:#fff;font-family:var(--font-sans);font-size:14px;font-weight:800;margin-bottom:14px}
.footer-col ul{list-style:none;display:grid;gap:9px}
.footer-col a{color:#B9CBD4}
.footer-col a:hover{color:#fff}
.footer-notices{border-top:1px solid rgba(255,255,255,.12);padding-top:var(--space-3);display:grid;gap:10px}
.footer-notices p{font-size:12.5px;color:#8AA2AE;line-height:1.7}
.footer-bottom{margin-top:var(--space-3);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12.5px;color:#7E97A4}

/* ============ Reveal motion ============ */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s ease}
.reveal.in{opacity:1;transform:none}

/* ============ Responsive ============ */
@media (max-width:1024px){
  .carousel-grid,.cost-grid,.post-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:860px){
  .nav-toggle{display:flex}
  .main-nav{position:fixed;inset:0;top:68px;background:#fff;flex-direction:column;align-items:stretch;padding:var(--space-3);gap:6px;transform:translateX(100%);transition:transform .25s ease;overflow-y:auto;z-index:99}
  .main-nav.open{transform:translateX(0)}
  .main-nav a{padding:16px 18px;font-size:16px;border-radius:12px}
  .hero-grid{grid-template-columns:1fr;padding:var(--space-7) 0 var(--space-6)}
  .hero-visual{order:-1}
  .split-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:var(--space-6) 0}
}
@media (max-width:640px){
  .carousel-grid,.cost-grid,.post-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr;gap:16px}
  .tl-item{flex-direction:row;text-align:left;align-items:center;gap:12px}
  .tl-item::before{display:none}
  .tl-dot{margin:0}
  .hero h1{font-size:32px}
  .btn{width:100%}
  .hero-actions{flex-direction:column}
  .bar-row{grid-template-columns:1fr;gap:6px}
  .bar-label{text-align:left}
  .article-content{font-size:16px}
}

/* ============ Motion ============ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}