/*
Theme Name: Liên Sơn
Theme URI: https://vaithunlienson.com
Author: Vải Thun Liên Sơn
Description: Giao diện riêng cho Vải Thun Liên Sơn — nền chàm, vàng champagne, trắng mộc. Nhẹ, không cần page builder.
Version: 1.2.0
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: lienson
*/

:root{
  --ink:#14213D; --ink-2:#1C2B4D; --ink-3:#0F1A31; --line:#2E3D63;
  --gold:#C6A46A; --gold-hover:#E3C995; --gold-text-light:#7A5C2A;
  --ivory:#F3F0EA; --mute:#A9B0C2; --mute-light:#5A6078; --soft:#C9CEDA;
  --serif:"Cormorant Garamond","Times New Roman",serif;
  --sans:Montserrat,Arial,sans-serif;
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--ink);color:var(--ivory);font:400 16px/1.7 var(--sans);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--gold)}a:hover{color:var(--gold-hover)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.screen-reader-text{position:absolute;left:-9999px}
.skip-link:focus{left:16px;top:16px;z-index:999;background:var(--gold);color:var(--ink);padding:8px 16px}

/* type */
h1,h2,h3{font-family:var(--serif);font-weight:500;line-height:1.1;margin:0}
.eyebrow{font-size:13px;letter-spacing:.3em;color:var(--gold);font-weight:500;text-transform:uppercase}
.section-title{font-size:clamp(34px,4vw,48px)}
.lead{font-size:18px;color:var(--soft);max-width:560px;margin:0}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 28px;border-radius:2px;font:600 15px var(--sans);text-decoration:none;border:1px solid var(--gold);cursor:pointer;transition:background .2s,color .2s}
.btn-gold{background:var(--gold);color:var(--ink)}.btn-gold:hover{background:var(--gold-hover);color:var(--ink)}
.btn-line{background:transparent;color:var(--gold)}.btn-line:hover{background:var(--gold);color:var(--ink)}
.btn-ink{background:var(--ink);color:var(--ivory);border-color:var(--ink)}.btn-ink:hover{background:var(--ink-2);color:var(--ivory)}
.btn-row{display:flex;flex-wrap:wrap;gap:16px}

/* topbar + header */
.topbar{background:var(--ink-3);font-size:13px;color:var(--mute)}
.topbar .wrap{display:flex;justify-content:space-between;gap:16px;padding-top:9px;padding-bottom:9px}
.topbar a{text-decoration:none;font-weight:500}
.site-header{border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;background:var(--ink)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:88px}
.brand img{height:60px;width:auto}
.main-nav>ul{list-style:none;margin:0;padding:0;display:flex;gap:26px;align-items:center}
.main-nav a{color:var(--ivory);text-decoration:none;font-size:15px;font-weight:500;padding:8px 0;border-bottom:2px solid transparent}
.main-nav a:hover,.main-nav .current a.top{color:var(--gold);border-color:var(--gold)}
.main-nav li{position:relative}
.main-nav .sub{display:none;position:absolute;left:-16px;top:100%;min-width:260px;background:var(--ink-2);border:1px solid var(--line);list-style:none;margin:0;padding:8px 0;z-index:60}
.main-nav li:hover>.sub,.main-nav li:focus-within>.sub{display:block}
.main-nav .sub a{display:block;padding:10px 20px;border:0;font-size:14px}
.main-nav .sub a:hover{background:var(--ink);color:var(--gold)}
.nav-toggle{display:none;width:48px;height:48px;background:transparent;border:1px solid var(--line);border-radius:2px;color:var(--ivory);cursor:pointer}
.header-cta{flex-shrink:0}

/* sections */
.section{padding:104px 0}
.section-alt{background:var(--ink-2)}
.section-light{background:var(--ivory);color:var(--ink)}
.section-light .eyebrow{color:var(--gold-text-light)}
.section-light p{color:var(--mute-light)}
.head-row{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:48px}
.head-stack{display:flex;flex-direction:column;gap:12px}

/* hero */
.hero .wrap{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:64px;align-items:center;padding-top:88px;padding-bottom:96px}
.hero h1{font-size:clamp(42px,5vw,64px);line-height:1.05}
.hero-copy{display:flex;flex-direction:column;gap:24px}
.hero-media{min-height:480px;border:1px solid var(--line);outline:1px dashed var(--gold);outline-offset:-14px;background:var(--ink-2) center/cover no-repeat;display:flex;align-items:center;justify-content:center}
.hero-media.empty img{width:45%;opacity:.9}

/* perks */
.perks{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--line)}
.perk{padding:28px 24px;border-right:1px solid var(--line)}.perk:last-child{border-right:0}
.perk h3{font-size:24px;margin-bottom:8px}.perk p{margin:0;font-size:14px;color:var(--mute)}

/* category cards */
.cat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.cat-card{display:flex;background:var(--ink-2);border:1px solid var(--line);border-radius:2px;text-decoration:none;color:var(--ivory);min-height:150px;transition:border-color .2s}
.cat-card:hover{border-color:var(--gold);color:var(--ivory)}
.cat-thumb{width:140px;flex-shrink:0;background:repeating-linear-gradient(135deg,#22325A 0 12px,#1C2B4D 12px 24px) center/cover}
.cat-body{padding:22px;display:flex;flex-direction:column;gap:8px}
.cat-body h3{font-size:26px}.cat-body p{margin:0;font-size:13px;color:var(--mute)}
.cat-body span{font-size:13px;font-weight:600;color:var(--gold)}

/* swatches */
.split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:64px;align-items:center}
.swatch-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px}
.swatch{aspect-ratio:1;border:1px solid #D9D2C3;border-radius:2px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.step{padding:32px 28px;border:1px solid var(--line);outline:1px dashed #3B4B75;outline-offset:-10px}
.step b{display:block;font:500 44px/1 var(--serif);color:var(--gold);margin-bottom:14px}
.step h3{font:600 18px var(--sans);margin-bottom:8px}.step p{margin:0;font-size:14px;color:var(--mute)}

/* posts */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{display:flex;flex-direction:column;gap:14px;text-decoration:none;color:var(--ivory)}
.post-card .thumb{aspect-ratio:16/10;border:1px solid var(--line);background:repeating-linear-gradient(135deg,#22325A 0 12px,#1C2B4D 12px 24px) center/cover}
.post-card time{font-size:12px;color:var(--mute)}.post-card h3{font-size:26px;line-height:1.2}
.post-card:hover h3{color:var(--gold)}

/* faq */
.faq-wrap{display:grid;grid-template-columns:1fr 2fr;gap:64px}
.faq details{border-bottom:1px solid var(--line);padding:20px 0}
.faq summary{font-weight:600;font-size:17px;cursor:pointer;list-style:none}
.faq summary::after{content:"+";float:right;color:var(--gold)}.faq details[open] summary::after{content:"–"}
.faq p{margin:10px 0 0;color:var(--mute)}

/* visit */
.visit dl{display:grid;grid-template-columns:auto 1fr;gap:10px 16px;margin:24px 0}
.visit dt{color:var(--mute)}.visit dd{margin:0}
.map{min-height:400px;border:1px solid var(--line);background:var(--ink-2)}
.map iframe{width:100%;height:100%;min-height:400px;border:0;display:block}

/* page layout */
.breadcrumb{font-size:13px;color:var(--mute);padding:20px 0}
.breadcrumb a{color:var(--mute);text-decoration:none}.breadcrumb a:hover{color:var(--gold)}
.breadcrumb span{margin:0 8px;color:#5A6078}
.page-head{padding:8px 0 40px}.page-head h1{font-size:clamp(40px,5vw,56px)}
.page-grid{display:grid;grid-template-columns:280px minmax(0,1fr);gap:56px;padding-bottom:104px}
.side-nav{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.side-nav li a{display:flex;gap:12px;padding:14px 16px;border-bottom:1px solid var(--line);color:var(--ivory);text-decoration:none;font-weight:500;font-size:15px}
.side-nav li a::before{content:"›";color:var(--gold)}
.side-nav li.current_page_item>a,.side-nav li a:hover{background:var(--gold);color:var(--ink)}
.side-nav li.current_page_item>a::before,.side-nav li a:hover::before{color:var(--ink)}
.side-nav .children{list-style:none;padding:0;margin:0}.side-nav .children a{padding-left:36px;font-size:14px}
.cta-box{margin-top:24px;padding:24px;border:1px solid var(--gold);outline:1px dashed var(--gold);outline-offset:-8px;display:flex;flex-direction:column;gap:12px}
.cta-box h3{font-size:24px}.cta-box p{margin:0;font-size:14px;color:var(--mute)}
.child-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin:40px 0}

/* prose from editor */
.prose{max-width:820px}
.prose h2{font-size:34px;margin:48px 0 16px}.prose h3{font-size:26px;margin:32px 0 12px}
.prose p,.prose li{color:var(--soft)}.prose strong{color:var(--ivory)}
.prose ul,.prose ol{padding-left:22px}.prose li{margin:6px 0}
.prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;display:block;overflow-x:auto}
.prose th,.prose td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.prose th{background:var(--ink-2);color:var(--gold);font-weight:600}
.prose .note{padding:16px 20px;border-left:0;border:1px dashed var(--gold);color:var(--soft)}
.page-wide .prose{max-width:none}

/* palette page */
.pal-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.pal-tabs button{min-height:44px;padding:0 20px;border:1px solid var(--gold);border-radius:2px;background:transparent;color:var(--ivory);font:600 14px var(--sans);cursor:pointer}
.pal-tabs button[aria-selected=true]{background:var(--gold);color:var(--ink)}
.ls-palette{display:block}.ls-palette[hidden]{display:none}
.ls-palette .wp-block-gallery,.ls-palette .gallery{display:grid!important;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:16px}
.ls-palette figcaption{font-size:13px;color:var(--ivory)}

/* form */
.form-grid{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,2fr);gap:64px;padding-bottom:104px}
.quote-form{padding:36px;background:var(--ink-2);border:1px solid var(--line);display:flex;flex-direction:column;gap:20px}
.quote-form .row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:14px;font-weight:500}
.field input,.field select,.field textarea{min-height:48px;padding:10px 14px;background:var(--ink);border:1px solid var(--line);border-radius:4px;color:var(--ivory);font:15px var(--sans)}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--gold);outline-offset:1px}
.consent{display:flex;gap:10px;font-size:13px;color:var(--mute);align-items:flex-start}
.consent input{margin-top:4px;width:18px;height:18px;accent-color:var(--gold)}
.hp{position:absolute;left:-9999px}
.alert{padding:16px 20px;border:1px solid var(--gold);border-radius:2px}
.alert.err{border-color:#E07A6E;color:#F2B8B0}

/* footer */
.site-footer{background:var(--ink-3);padding:72px 0 40px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px}
.foot-grid h4{margin:0 0 12px;color:var(--gold);font:600 14px var(--sans)}
.foot-grid ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;font-size:14px}
.foot-grid a{color:var(--soft);text-decoration:none}.foot-grid a:hover{color:var(--gold)}
.foot-grid img{height:52px;width:auto;margin-bottom:16px}
.foot-grid p{font-size:14px;color:var(--mute);margin:0}
.legal{border-top:1px solid var(--line);margin-top:48px;padding-top:24px;display:flex;justify-content:space-between;gap:16px;font-size:13px;color:var(--mute)}

/* floating contacts */
.float-contact{position:fixed;right:20px;bottom:24px;display:flex;flex-direction:column;gap:12px;z-index:80}
.float-contact a{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;text-decoration:none;font:700 12px var(--sans);box-shadow:0 4px 14px rgba(0,0,0,.35)}
.fc-zalo{background:var(--gold);color:var(--ink)}.fc-call{background:var(--ivory)}.fc-mess{background:var(--ink-2);border:1px solid var(--gold)}
.mobile-bar{display:none}

/* responsive */
@media (max-width:1100px){
  .main-nav>ul{gap:18px}.main-nav a{font-size:14px}
}
@media (max-width:960px){
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .header-cta{display:none}
  .main-nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--ink);border-bottom:1px solid var(--line)}
  .main-nav.open{display:block}
  .main-nav>ul{flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 24px}
  .main-nav>ul>li>a{display:block;padding:14px 0;border-bottom:1px solid var(--line)}
  .main-nav .sub{display:block;position:static;border:0;background:transparent;padding:0 0 8px 16px}
  .hero .wrap,.split,.faq-wrap,.page-grid,.form-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{min-height:280px}
  .perks{grid-template-columns:repeat(2,minmax(0,1fr))}.perk{border-bottom:1px solid var(--line)}
  .cat-grid,.post-grid,.child-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid{grid-template-columns:1fr 1fr}
  .section{padding:72px 0}
}
@media (max-width:640px){
  .topbar .hide-sm{display:none}
  .brand img{height:44px}.site-header .wrap{min-height:68px}
  .cat-grid,.post-grid,.child-grid,.steps{grid-template-columns:1fr}
  .cat-thumb{width:110px}
  .swatch-grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:8px}
  .quote-form{padding:22px}.quote-form .row{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}.legal{flex-direction:column}
  .head-row{flex-direction:column;align-items:flex-start}
  .float-contact{display:none}
  .mobile-bar{display:grid;grid-template-columns:1fr 1fr;position:fixed;left:0;right:0;bottom:0;height:60px;z-index:90;border-top:1px solid var(--gold);background:var(--ink-3)}
  .mobile-bar a{display:flex;align-items:center;justify-content:center;font-weight:600;text-decoration:none;color:var(--ivory)}
  .mobile-bar a+a{background:var(--gold);color:var(--ink)}
  body{padding-bottom:60px}
}

/* v1.1 — ảnh */
.page-cover{width:100%;max-width:1100px;aspect-ratio:1900/1000;object-fit:cover;border:1px solid var(--line);margin:0 0 40px}
.pal-figure{margin:0 0 24px}
.pal-figure img{width:100%;max-width:760px;border:1px solid var(--line)}
.pal-figure figcaption,.gallery-fig figcaption{font-size:13px;color:var(--mute);margin-top:10px}
.gallery-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;padding-bottom:104px}
.gallery-fig{margin:0}.gallery-fig img{width:100%;aspect-ratio:3/2;object-fit:cover;border:1px solid var(--line)}
.gallery-fig h2{font-size:26px;margin:14px 0 4px}
@media (max-width:960px){.gallery-grid{grid-template-columns:1fr}}

/* v1.2 */
.legal{align-items:flex-start;line-height:1.8}.legal strong{color:var(--soft)}.legal a{color:var(--mute)}