/*
Theme Name: SkyLit Systems
Theme URI: https://skylitsystems.com
Author: Shutter Ventures Studio
Author URI: https://parambrotodey.netlify.app
Description: Custom catalogue theme for SkyLit Systems — premium uPVC doors & windows. Built around the brand's three product tiers (Essential, Signature, Elite) with a Products custom post type, series taxonomy, and dedicated Warranty, Book a Site Visit and Terms & Conditions pages. No page builder or paid plugin required.
Version: 1.1.0
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: skylit
*/

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root{
  --ink:        #0A0F1A;
  --blue-deep:  #0B2F82;
  --blue-bright:#1656D9;
  --blue-pane:  #A9D4F5;
  --walnut:     #8B5A2B;
  --paper:      #F6F7F9;
  --white:      #FFFFFF;
  --line:       #E1E5EC;
  --ink-60:     rgba(10,15,26,.62);
  --ink-40:     rgba(10,15,26,.4);

  --font-display: 'Fraunces', 'Georgia', serif;
  --font-body:    'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono:    'IBM Plex Mono', 'Courier New', monospace;

  --wedge: polygon(30% 0, 100% 0, 100% 100%, 54% 100%);
  --container: 1180px;
  --radius: 3px;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0; padding:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--white);
  font-size:16px;
  line-height:1.6;
  -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,h4{ font-family:var(--font-display); margin:0 0 .4em; font-weight:600; letter-spacing:-.01em; line-height:1.1; }
p{ margin:0 0 1em; }
button{ font-family:inherit; cursor:pointer; }
:focus-visible{ outline:3px solid var(--blue-bright); outline-offset:2px; }
@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.001ms !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

.container{ max-width:var(--container); margin:0 auto; padding:0 24px; }
.eyebrow{
  font-family:var(--font-mono); font-size:.72rem; letter-spacing:.14em; text-transform:uppercase;
  color:var(--blue-bright); display:inline-flex; align-items:center; gap:8px; margin-bottom:14px;
}
.eyebrow::before{ content:""; width:22px; height:2px; background:var(--blue-bright); display:block; }
.section{ padding:128px 0; }
.section-tight{ padding:72px 0; }
.section-title{ font-size:clamp(1.7rem,3.2vw,2.6rem); max-width:640px; }
.section-lede{ color:var(--ink-60); max-width:560px; font-size:1.05rem; }
.bg-ink{ background:var(--ink); color:var(--white); }
.bg-ink .section-lede{ color:rgba(255,255,255,.65); }
.bg-paper{ background:var(--paper); }
.btn{
  display:inline-flex; align-items:center; gap:10px; font-family:var(--font-mono);
  font-size:.8rem; letter-spacing:.08em; text-transform:uppercase; padding:15px 30px;
  border:1px solid var(--ink); border-radius:var(--radius); transition:.3s ease;
}
.btn-primary{ background:var(--blue-bright); border-color:var(--blue-bright); color:var(--white); }
.btn-primary:hover{ background:var(--blue-deep); border-color:var(--blue-deep); }
.btn-ghost{ background:transparent; color:var(--white); border-color:rgba(255,255,255,.4); }
.btn-ghost:hover{ border-color:var(--white); background:rgba(255,255,255,.08); }
.btn-dark{ background:transparent; color:var(--ink); border-color:var(--ink); }
.btn-dark:hover{ background:var(--ink); color:var(--white); }

/* ============================================================
   HEADER
   ============================================================ */
.site-header{
  position:sticky; top:0; z-index:50; background:rgba(255,255,255,.94); backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; padding:16px 24px; max-width:var(--container); margin:0 auto; gap:24px; }
.brand{ display:flex; align-items:center; gap:10px; font-family:var(--font-display); font-weight:700; font-size:1.3rem; letter-spacing:.02em; }
.brand-mark{ width:30px; height:30px; flex-shrink:0; }
.brand small{ display:block; font-family:var(--font-mono); font-weight:400; font-size:.56rem; letter-spacing:.16em; color:var(--ink-60); text-transform:uppercase; margin-top:1px; }
.primary-nav ul{ display:flex; gap:28px; align-items:center; }
.primary-nav a{ font-size:.92rem; font-weight:500; position:relative; padding:6px 0; }
.primary-nav a::after{ content:""; position:absolute; left:0; bottom:0; height:2px; width:0; background:var(--blue-bright); transition:.2s; }
.primary-nav a:hover::after, .primary-nav .current-menu-item a::after{ width:100%; }
.header-cta{ display:flex; align-items:center; gap:14px; }
.header-phone{ font-family:var(--font-mono); font-size:.86rem; font-weight:600; display:flex; align-items:center; gap:6px; white-space:nowrap; }
.nav-toggle{ display:none; background:none; border:0; padding:6px; }
.nav-toggle span{ display:block; width:22px; height:2px; background:var(--ink); margin:5px 0; }

@media (max-width:900px){
  .primary-nav{ position:absolute; top:100%; left:0; right:0; background:var(--white); border-bottom:1px solid var(--line); max-height:0; overflow:hidden; transition:.25s ease; }
  .primary-nav.is-open{ max-height:420px; }
  .primary-nav ul{ flex-direction:column; align-items:flex-start; padding:10px 24px 20px; gap:4px; }
  .primary-nav a{ display:block; padding:12px 0; width:100%; }
  .nav-toggle{ display:block; }
  .header-phone span.phone-text{ display:none; }
}

/* ============================================================
   HERO
   ============================================================ */
.hero{ position:relative; background:var(--ink); color:var(--white); overflow:hidden; padding:0; }
.hero-grid{ display:grid; grid-template-columns:1.1fr .9fr; min-height:600px; }
.hero-copy{ padding:110px 48px 72px 24px; max-width:620px; margin:0 auto; align-self:center; position:relative; z-index:2; }
.hero-copy .eyebrow{ color:var(--blue-pane); }
.hero-copy .eyebrow::before{ background:var(--blue-pane); }
.hero-title{ font-size:clamp(2.3rem,4.4vw,3.9rem); line-height:1.04; font-weight:500; }
.hero-title em{ font-style:italic; font-weight:500; color:var(--blue-pane); }
.hero-sub{ color:rgba(255,255,255,.68); font-size:1.08rem; max-width:460px; margin-bottom:30px; }
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; margin-bottom:40px; }
.hero-specs{ display:flex; gap:28px; border-top:1px solid rgba(255,255,255,.16); padding-top:20px; flex-wrap:wrap; }
.hero-specs div{ font-family:var(--font-mono); }
.hero-specs strong{ display:block; font-size:1.4rem; color:var(--white); font-family:var(--font-display); }
.hero-specs span{ font-size:.7rem; text-transform:uppercase; letter-spacing:.1em; color:rgba(255,255,255,.55); }

.hero-visual{ position:relative; clip-path:var(--wedge); background:linear-gradient(155deg,var(--blue-bright) 0%,var(--blue-deep) 55%,var(--ink) 100%); }
.hero-visual::before{
  content:""; position:absolute; inset:0;
  background:radial-gradient(ellipse at 75% 25%, rgba(22,86,217,.28), transparent 55%);
}
.hero-visual-tag{
  position:absolute; right:36px; bottom:36px; z-index:2; text-align:right; font-family:var(--font-mono);
  color:rgba(255,255,255,.85); font-size:.74rem; letter-spacing:.08em; text-transform:uppercase; line-height:1.7;
}
@media (max-width:900px){
  .hero-grid{ grid-template-columns:1fr; min-height:auto; }
  .hero-visual{ clip-path:none; height:180px; order:-1; }
  .hero-copy{ padding:44px 24px 52px; }
}

/* ============================================================
   USP STRIP
   ============================================================ */
.usp-strip{ border-bottom:1px solid var(--line); background:var(--white); }
.usp-strip ul{ display:grid; grid-template-columns:repeat(6,1fr); }
.usp-strip li{ display:flex; flex-direction:column; align-items:center; gap:10px; text-align:center; padding:26px 12px; border-left:1px solid var(--line); font-size:.78rem; font-weight:500; }
.usp-strip li:first-child{ border-left:0; }
.usp-strip svg{ width:26px; height:26px; stroke:var(--blue-deep); }
@media (max-width:900px){ .usp-strip ul{ grid-template-columns:repeat(3,1fr); } .usp-strip li:nth-child(4){ border-left:0; } }
@media (max-width:520px){ .usp-strip ul{ grid-template-columns:repeat(2,1fr); } .usp-strip li:nth-child(3){ border-left:0; } }

/* ============================================================
   TIER LADDER
   ============================================================ */
.tier-ladder{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line); margin-top:56px; }
.tier-card{ background:var(--white); padding:48px 36px; display:flex; flex-direction:column; position:relative; transition:.3s; }
.tier-card:hover{ background:var(--paper); }
.tier-card[data-tier="2"]{ padding-top:16px; }
.tier-card[data-tier="3"]{ padding-top:0; background:var(--ink); color:var(--white); }
.tier-card[data-tier="3"]:hover{ background:#050810; }
.tier-step{ font-family:var(--font-mono); font-size:.7rem; letter-spacing:.1em; text-transform:uppercase; color:var(--blue-bright); margin-bottom:18px; display:block; }
.tier-card[data-tier="3"] .tier-step{ color:var(--blue-pane); }
.tier-name{ font-size:2.2rem; margin-bottom:8px; }
.tier-tagline{ font-size:.92rem; color:var(--ink-60); margin-bottom:20px; }
.tier-card[data-tier="3"] .tier-tagline{ color:rgba(255,255,255,.65); }
.tier-best-for{ margin-bottom:24px; }
.tier-best-for-label{ display:block; font-family:var(--font-mono); font-size:.66rem; text-transform:uppercase; letter-spacing:.1em; color:var(--blue-bright); margin-bottom:6px; }
.tier-best-for p{ font-size:.92rem; color:var(--ink-60); margin:0; line-height:1.55; }
.tier-card[data-tier="3"] .tier-best-for-label{ color:var(--blue-pane); }
.tier-card[data-tier="3"] .tier-best-for p{ color:rgba(255,255,255,.65); }
.tier-count{ font-size:.86rem; font-weight:500; margin-bottom:24px; }
.tier-colours{ display:flex; gap:8px; margin-bottom:28px; }
.tier-colours span{ width:18px; height:18px; border-radius:50%; border:1px solid rgba(0,0,0,.15); display:block; }
.tier-card[data-tier="3"] .tier-colours span{ border-color:rgba(255,255,255,.25); }
.tier-card .btn{ margin-top:auto; align-self:flex-start; }
@media (max-width:800px){ .tier-ladder{ grid-template-columns:1fr; } .tier-card[data-tier="2"],.tier-card[data-tier="3"]{ padding-top:36px; } }

/* ============================================================
   PRODUCT GRID + FILTERS
   ============================================================ */
.filter-bar{ display:flex; flex-wrap:wrap; gap:10px; margin:40px 0 8px; }
.filter-bar a{
  font-family:var(--font-mono); font-size:.78rem; text-transform:uppercase; letter-spacing:.05em;
  padding:9px 18px; border:1px solid var(--line); border-radius:20px; transition:.15s;
}
.filter-bar a:hover{ border-color:var(--blue-bright); color:var(--blue-bright); }
.filter-bar a.is-active{ background:var(--ink); border-color:var(--ink); color:var(--white); }

.product-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:28px; margin-top:32px; }
.product-card{ border:1px solid var(--line); background:var(--white); display:flex; flex-direction:column; transition:.35s ease; }
.product-card:hover{ box-shadow:0 24px 48px rgba(10,15,26,.1); transform:translateY(-4px); border-color:var(--blue-bright); }
.product-card-media{ aspect-ratio:4/3; background:linear-gradient(155deg,#eef3fb,var(--paper)); position:relative; overflow:hidden; display:flex; align-items:center; justify-content:center; }
.product-card-media svg{ width:58%; height:58%; }
.product-sku{ position:absolute; top:12px; left:12px; font-family:var(--font-mono); font-size:.68rem; background:var(--ink); color:var(--white); padding:3px 8px; }
.product-type-tag{ position:absolute; top:12px; right:12px; font-family:var(--font-mono); font-size:.62rem; text-transform:uppercase; letter-spacing:.08em; background:rgba(255,255,255,.9); padding:3px 8px; }
.product-card-body{ padding:20px 20px 24px; display:flex; flex-direction:column; flex:1; }
.product-card-series{ font-family:var(--font-mono); font-size:.66rem; text-transform:uppercase; letter-spacing:.1em; color:var(--blue-bright); margin-bottom:6px; }
.product-card-title{ font-size:1.12rem; margin-bottom:10px; }
.product-card-feats{ font-size:.84rem; color:var(--ink-60); margin-bottom:16px; flex:1; }
.product-card-feats li{ position:relative; padding-left:14px; margin-bottom:3px; }
.product-card-feats li::before{ content:"—"; position:absolute; left:0; color:var(--blue-bright); }
.product-card-link{ font-family:var(--font-mono); font-size:.78rem; text-transform:uppercase; letter-spacing:.05em; color:var(--ink); border-top:1px solid var(--line); padding-top:14px; display:flex; justify-content:space-between; transition:.25s; }
.product-card:hover .product-card-link{ color:var(--blue-bright); }
@media (max-width:960px){ .product-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:620px){ .product-grid{ grid-template-columns:1fr; } }

/* ============================================================
   SERIES / TAXONOMY LANDING PAGE
   ============================================================ */
.series-hero{ position:relative; background:var(--ink); color:var(--white); padding:120px 0 76px; overflow:hidden; }
.series-hero::before{ content:""; position:absolute; top:0; right:0; width:46%; height:100%; clip-path:polygon(30% 0,100% 0,100% 100%,0 100%); background:linear-gradient(155deg,var(--blue-bright),var(--blue-deep)); }
.series-hero::after{ content:""; position:absolute; top:0; right:0; width:46%; height:100%; clip-path:polygon(30% 0,100% 0,100% 100%,0 100%); background:radial-gradient(ellipse at 70% 20%, rgba(22,86,217,.25), transparent 55%); }
.series-hero-inner{ position:relative; z-index:2; max-width:620px; }
.series-hero .tier-depth{ font-size:1.1rem; font-family:var(--font-mono); color:var(--blue-pane); text-transform:uppercase; letter-spacing:.1em; margin-bottom:16px; }
.series-hero h1{ font-size:clamp(2.2rem,4vw,3.4rem); }
.series-hero p{ color:rgba(255,255,255,.68); max-width:520px; }
.series-specs{ display:flex; gap:28px; margin-top:36px; flex-wrap:wrap; }
.series-specs div{ font-family:var(--font-mono); }
.series-specs strong{ display:block; font-family:var(--font-display); font-size:1.4rem; }
.series-specs span{ font-size:.68rem; text-transform:uppercase; letter-spacing:.1em; color:rgba(255,255,255,.55); }
.series-best-for{ margin-top:28px; max-width:480px; }
.series-best-for-label{ display:block; font-family:var(--font-mono); font-size:.68rem; text-transform:uppercase; letter-spacing:.1em; color:var(--blue-pane); margin-bottom:8px; }
.series-best-for p{ color:rgba(255,255,255,.75); font-size:.98rem; margin:0; }

/* ============================================================
   SINGLE PRODUCT
   ============================================================ */
.product-hero{ display:grid; grid-template-columns:1fr 1fr; gap:56px; padding:64px 0 32px; align-items:start; }
.product-hero-media{ background:var(--paper); border:1px solid var(--line); aspect-ratio:4/3; display:flex; align-items:center; justify-content:center; position:sticky; top:96px; }
.product-hero-media svg{ width:60%; height:60%; }
.product-hero-info .eyebrow{ margin-bottom:10px; }
.product-hero-info h1{ font-size:clamp(1.9rem,3.4vw,2.6rem); margin-bottom:14px; }
.product-meta-row{ display:flex; gap:16px; align-items:center; margin-bottom:26px; font-family:var(--font-mono); font-size:.8rem; color:var(--ink-60); flex-wrap:wrap; }
.product-meta-row .sku-badge{ background:var(--ink); color:var(--white); padding:4px 10px; }
.spec-block{ border-top:1px solid var(--line); padding:22px 0; }
.spec-block h3{ font-size:.72rem; text-transform:uppercase; letter-spacing:.1em; font-family:var(--font-mono); color:var(--blue-bright); margin-bottom:14px; }
.spec-block ul li{ position:relative; padding-left:18px; margin-bottom:8px; font-size:.98rem; }
.spec-block ul li::before{ content:""; position:absolute; left:0; top:.55em; width:8px; height:8px; background:var(--blue-bright); }
.pill-row{ display:flex; gap:8px; flex-wrap:wrap; }
.pill{ border:1px solid var(--line); font-family:var(--font-mono); font-size:.78rem; padding:6px 14px; }
.product-cta{ display:flex; gap:14px; margin-top:28px; flex-wrap:wrap; }
@media (max-width:820px){ .product-hero{ grid-template-columns:1fr; } .product-hero-media{ position:static; } }

.related-strip{ background:var(--paper); padding:64px 0; margin-top:40px; }

/* ============================================================
   WHY / WARRANTY (home)
   ============================================================ */
.why-grid{ display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center; }
.why-list li{ display:flex; gap:16px; padding:20px 0; border-top:1px solid rgba(255,255,255,.14); }
.why-list li:last-child{ border-bottom:1px solid rgba(255,255,255,.14); }
.why-num{ font-family:var(--font-mono); color:var(--blue-pane); font-size:.85rem; padding-top:3px; }
.why-list h4{ font-size:1.08rem; margin-bottom:4px; }
.why-list p{ color:rgba(255,255,255,.6); font-size:.92rem; margin:0; }
.warranty-card{ background:linear-gradient(155deg,var(--blue-bright),var(--blue-deep)); padding:44px 36px; }
.warranty-card .eyebrow{ color:var(--blue-pane); }
.warranty-card .eyebrow::before{ background:var(--blue-pane); }
.warranty-figures{ display:flex; gap:40px; margin-top:28px; }
.warranty-figures strong{ display:block; font-family:var(--font-display); font-size:2.6rem; }
.warranty-figures span{ font-family:var(--font-mono); font-size:.7rem; text-transform:uppercase; letter-spacing:.08em; color:rgba(255,255,255,.75); }
@media (max-width:800px){ .why-grid{ grid-template-columns:1fr; } }

/* ============================================================
   WARRANTY PAGE + LEGAL/TERMS PROSE
   ============================================================ */
.warranty-stats{ display:flex; gap:56px; padding:36px 0; border-top:1px solid var(--line); border-bottom:1px solid var(--line); margin:8px 0 48px; flex-wrap:wrap; }
.warranty-stats strong{ display:block; font-family:var(--font-display); font-size:2.8rem; }
.warranty-stats span{ font-family:var(--font-mono); font-size:.72rem; text-transform:uppercase; letter-spacing:.1em; color:var(--ink-60); }
.legal-content{ max-width:760px; }
.legal-content .legal-updated{ display:block; font-family:var(--font-mono); font-size:.78rem; color:var(--ink-60); margin-bottom:40px; }
.legal-content h2{ font-size:1.25rem; margin-top:2.2em; }
.legal-content p{ color:var(--ink-60); font-size:1rem; line-height:1.7; }
.legal-content a{ color:var(--blue-bright); text-decoration:underline; }

/* ============================================================
   CONTACT / LOCATION
   ============================================================ */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:0; border:1px solid var(--line); }
.contact-info{ padding:56px 48px; }
.contact-info dl{ margin-top:32px; }
.contact-info dt{ font-family:var(--font-mono); font-size:.68rem; text-transform:uppercase; letter-spacing:.1em; color:var(--blue-bright); margin-top:22px; }
.contact-info dd{ margin:6px 0 0; font-size:1.05rem; }
.contact-map{ min-height:420px; background:var(--paper); }
.contact-map iframe{ width:100%; height:100%; min-height:420px; border:0; filter:grayscale(.15); }
@media (max-width:800px){ .contact-grid{ grid-template-columns:1fr; } }

.enquiry-form{ display:grid; gap:16px; margin-top:32px; }
.enquiry-form input, .enquiry-form select, .enquiry-form textarea{
  border:1px solid var(--line); background:var(--white); padding:13px 14px; font-family:var(--font-body); font-size:.96rem; width:100%;
}
.enquiry-form label{ font-family:var(--font-mono); font-size:.68rem; text-transform:uppercase; letter-spacing:.08em; color:var(--ink-60); display:block; margin-bottom:6px; }
.enquiry-form textarea{ min-height:100px; resize:vertical; }
.enquiry-form input:focus, .enquiry-form select:focus, .enquiry-form textarea:focus{ outline:none; border-color:var(--blue-bright); }
.form-success{ background:var(--paper); border:1px solid var(--line); border-left:3px solid var(--blue-bright); padding:18px 20px; margin-top:24px; font-size:.95rem; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{ background:var(--ink); color:rgba(255,255,255,.7); padding:64px 0 28px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; padding-bottom:48px; border-bottom:1px solid rgba(255,255,255,.12); }
.footer-brand .brand{ color:var(--white); }
.footer-brand p{ font-size:.9rem; max-width:280px; margin-top:14px; color:rgba(255,255,255,.55); }
.footer-col h5{ font-family:var(--font-mono); font-size:.68rem; text-transform:uppercase; letter-spacing:.1em; color:var(--blue-pane); margin-bottom:16px; }
.footer-col li{ margin-bottom:10px; font-size:.92rem; }
.footer-col a:hover{ color:var(--white); }
.footer-bottom{ display:flex; justify-content:space-between; padding-top:24px; font-size:.8rem; flex-wrap:wrap; gap:10px; color:rgba(255,255,255,.4); }
@media (max-width:800px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:520px){ .footer-grid{ grid-template-columns:1fr; } }

/* ============================================================
   MISC
   ============================================================ */
.breadcrumbs{ font-family:var(--font-mono); font-size:.76rem; color:var(--ink-60); padding:20px 0 0; }
.breadcrumbs a:hover{ color:var(--blue-bright); }
.page-content{ padding:64px 0 88px; max-width:760px; }
.page-header{ padding:64px 0 8px; }
.page-header h1{ font-size:clamp(2rem,4vw,2.8rem); }
.page-content h1{ font-size:clamp(2rem,4vw,2.8rem); margin-bottom:24px; }
.page-content h2{ font-size:1.5rem; margin-top:2em; }
.page-content p{ color:var(--ink-60); font-size:1.05rem; }
.skip-link{ position:absolute; left:-9999px; top:0; background:var(--blue-bright); color:#fff; padding:12px 20px; z-index:999; }
.skip-link:focus{ left:24px; top:24px; }