/* =========================================================
   Next Plumbing and Heating South Gate — Design System
   ========================================================= */

:root{
  /* Color */
  --color-primary: #123A5C;       /* deep navy — trust */
  --color-primary-dark: #0B2740;
  --color-urgent: #D8431D;        /* burnt orange-red — emergency/CTA */
  --color-urgent-dark: #B23616;
  --color-success: #2E7D32;
  --color-ink: #1C1F22;
  --color-ink-soft: #4A5057;
  --color-line: #E2E6EA;
  --color-surface: #FFFFFF;
  --color-surface-alt: #F4F6F8;
  --color-bg: #FAFAF9;
  --color-badge-bg: #0E2C46;

  /* Type */
  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --h1: clamp(1.75rem, 1.4rem + 1.6vw, 2.75rem);
  --h2: clamp(1.5rem, 1.25rem + 1vw, 2.1rem);
  --h3: clamp(1.2rem, 1.05rem + 0.6vw, 1.5rem);
  --body: 1rem;
  --small: 0.875rem;

  /* Spacing */
  --xs: 0.5rem;
  --sm: 1rem;
  --md: 1.5rem;
  --lg: 2.5rem;
  --xl: 4.5rem;

  /* Shape */
  --radius-btn: 4px;
  --radius-card: 10px;
  --shadow-card: 0 2px 10px rgba(18,58,92,0.10);
  --shadow-hover: 0 8px 24px rgba(18,58,92,0.18);

  --max-w: 1180px;
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.65;
  font-size: var(--body);
}
h1,h2,h3{
  font-family: var(--font-display);
  color: var(--color-primary-dark);
  line-height: 1.15;
  margin: 0 0 var(--sm);
  letter-spacing: -0.01em;
}
h1{ font-size: var(--h1); }
h2{ font-size: var(--h2); }
h3{ font-size: var(--h3); }
p{ margin: 0 0 var(--sm); color: var(--color-ink-soft); }
a{ color: var(--color-primary); text-decoration: none; }
img{ max-width: 100%; display:block; height:auto; }
ul{ padding-left: 1.2rem; }
.container{ max-width: var(--max-w); margin: 0 auto; padding: 0 var(--sm); }
.visually-hidden{ position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0); }

/* ---------- Header ---------- */
.site-header{
  position: sticky; top:0; z-index: 500;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-line);
}
.site-header .row{
  display:flex; align-items:center; justify-content:space-between;
  padding: 0.75rem var(--sm);
  max-width: var(--max-w); margin:0 auto;
}
.brand{ display:flex; align-items:center; gap:0.6rem; font-family: var(--font-display); font-weight:600; font-size:1.15rem; color: var(--color-primary-dark); }
.brand .mark{ width:34px; height:34px; flex:0 0 auto; }
.brand .tag{ display:block; font-family: var(--font-body); font-weight:600; font-size:0.65rem; letter-spacing:0.08em; text-transform:uppercase; color: var(--color-urgent); }

.main-nav{ display:none; }
.main-nav ul{ display:flex; gap:1.4rem; list-style:none; padding:0; margin:0; font-size:0.92rem; font-weight:600; }
.main-nav a{ color: var(--color-ink); }
.main-nav a:hover, .main-nav a:focus{ color: var(--color-urgent); }
.main-nav .has-sub{ position:relative; }
.main-nav .sub-menu{
  display:none; position:absolute; top:100%; left:0; background:var(--color-surface);
  border:1px solid var(--color-line); border-radius: var(--radius-card);
  box-shadow: var(--shadow-card); padding:0.5rem; min-width:280px; z-index:10;
}
.main-nav .has-sub:hover .sub-menu, .main-nav .has-sub:focus-within .sub-menu{ display:block; }
.main-nav .sub-menu li{ list-style:none; }
.main-nav .sub-menu a{ display:block; padding:0.4rem 0.6rem; border-radius:6px; font-weight:500; }
.main-nav .sub-menu a:hover{ background: var(--color-surface-alt); }

.header-call{
  display:inline-flex; align-items:center; gap:0.5rem;
  background: var(--color-urgent); color:#fff; font-weight:700;
  padding:0.6rem 1rem; border-radius: var(--radius-btn); white-space:nowrap;
  font-size:0.95rem;
}
.header-call:hover{ background: var(--color-urgent-dark); color:#fff; }

.nav-toggle{
  display:inline-flex; align-items:center; justify-content:center;
  width:44px; height:44px; border:1px solid var(--color-line); border-radius:6px;
  background:none; cursor:pointer; margin-left:0.5rem;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:""; display:block; width:20px; height:2px; background: var(--color-ink); position:relative;
}
.nav-toggle span::before{ position:absolute; top:-6px; }
.nav-toggle span::after{ position:absolute; top:6px; }

.mobile-nav{ display:none; background:var(--color-surface); border-top:1px solid var(--color-line); }
.mobile-nav.open{ display:block; }
.mobile-nav ul{ list-style:none; margin:0; padding:0.5rem var(--sm) 1rem; }
.mobile-nav li{ border-bottom:1px solid var(--color-line); }
.mobile-nav a{ display:block; padding:0.75rem 0.25rem; font-weight:600; color:var(--color-ink); }
.mobile-nav .sub-list{ padding-left:1rem; }
.mobile-nav .sub-list a{ font-weight:500; font-size:0.92rem; color: var(--color-ink-soft); }

@media(min-width:900px){
  .main-nav{ display:block; }
  .nav-toggle{ display:none; }
}

/* ---------- Sticky mobile call bar ---------- */
.sticky-call-bar{
  position: fixed; left:0; right:0; bottom:0; z-index:600;
  background: var(--color-urgent); color:#fff;
  display:flex; align-items:center; justify-content:center; gap:0.5rem;
  padding: 0.85rem var(--sm); font-weight:700; font-size:1rem;
  box-shadow: 0 -4px 16px rgba(0,0,0,0.18);
}
.sticky-call-bar a{ color:#fff; display:flex; align-items:center; gap:0.5rem; }
@media(min-width:900px){ .sticky-call-bar{ display:none; } }

/* ---------- Hero ---------- */
.hero{
  background: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color:#fff; padding: var(--xl) 0 var(--lg);
}
.hero .container{ display:grid; gap: var(--lg); grid-template-columns: 1fr; }
@media(min-width:960px){ .hero .container{ grid-template-columns: 1.1fr 0.9fr; align-items:center; } }
.hero h1{ color:#fff; }
.hero .sub{ color:#D9E4EE; font-size:1.05rem; max-width:46ch; }
.badges{ display:flex; flex-wrap:wrap; gap:0.6rem; margin: var(--sm) 0; }
.badge{
  display:inline-flex; align-items:center; gap:0.4rem;
  background: rgba(255,255,255,0.1); border:1px solid rgba(255,255,255,0.25);
  color:#fff; padding:0.35rem 0.7rem; border-radius:999px; font-size:0.8rem; font-weight:600;
}
.hero-actions{ display:flex; flex-wrap:wrap; gap:0.75rem; margin-top:var(--sm); }
.btn{
  display:inline-flex; align-items:center; gap:0.5rem;
  padding:0.85rem 1.4rem; border-radius: var(--radius-btn);
  font-weight:700; font-size:1rem; border:2px solid transparent; cursor:pointer;
}
.btn-call{ background: var(--color-urgent); color:#fff; }
.btn-call:hover{ background: var(--color-urgent-dark); color:#fff; }
.btn-outline{ border-color: rgba(255,255,255,0.5); color:#fff; }
.btn-outline:hover{ background: rgba(255,255,255,0.12); }
.hero-media{ border-radius: var(--radius-card); overflow:hidden; box-shadow: var(--shadow-hover); }

/* ---------- Sections ---------- */
section{ padding: var(--xl) 0; }
.section-alt{ background: var(--color-surface-alt); }
.eyebrow{ text-transform:uppercase; letter-spacing:0.09em; font-size:0.78rem; font-weight:700; color: var(--color-urgent); margin-bottom:0.5rem; display:block; }

/* Answer-first block */
.answer-block{
  background:#fff; border-left:4px solid var(--color-primary);
  padding: var(--md); border-radius: var(--radius-card); box-shadow: var(--shadow-card);
}

/* CTA bands */
.cta-band{
  background: var(--color-urgent); color:#fff; padding: var(--lg) 0;
}
.cta-band .container{ display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:var(--md); }
.cta-band h2, .cta-band p{ color:#fff; margin:0; }
.cta-band p{ max-width:60ch; }
.cta-band .btn-call{ background:#fff; color: var(--color-urgent-dark); }
.cta-band .btn-call:hover{ background:#f0f0f0; }
.cta-close{ background: var(--color-primary-dark); }
.cta-close .btn-call{ background: var(--color-urgent); color:#fff; }
.cta-close .btn-call:hover{ background: var(--color-urgent-dark); }

/* Cards / grids */
.grid{ display:grid; gap: var(--md); }
.grid-2{ grid-template-columns: 1fr; }
.grid-3{ grid-template-columns: 1fr; }
.grid-4{ grid-template-columns: 1fr; }
@media(min-width:700px){ .grid-2{ grid-template-columns: 1fr 1fr; } .grid-4{ grid-template-columns: 1fr 1fr; } }
@media(min-width:900px){ .grid-3{ grid-template-columns: repeat(3,1fr); } .grid-4{ grid-template-columns: repeat(4,1fr); } }

.card{
  background:#fff; border:1px solid var(--color-line); border-radius: var(--radius-card);
  padding: var(--md); box-shadow: var(--shadow-card); transition: box-shadow .2s ease, transform .2s ease;
}
.card:hover{ box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.card h3{ margin-bottom:0.4rem; }
.card a.card-link{ font-weight:700; color: var(--color-primary); }

.service-card{ display:flex; flex-direction:column; height:100%; }

/* Process list */
.process-list{ list-style:none; padding:0; margin:0; display:grid; gap:var(--sm); counter-reset: step; }
.process-list li{
  position:relative; padding-left:3rem; background:#fff; border:1px solid var(--color-line);
  border-radius: var(--radius-card); padding-top:1rem; padding-bottom:1rem; padding-right:1rem;
  box-shadow: var(--shadow-card);
}
.process-list li::before{
  counter-increment: step; content: counter(step);
  position:absolute; left:1rem; top:1rem; width:1.8rem; height:1.8rem;
  background: var(--color-primary); color:#fff; border-radius:50%;
  display:flex; align-items:center; justify-content:center; font-weight:700; font-size:0.9rem;
}

/* Signs list */
.signs-list{ list-style:none; padding:0; display:grid; gap:0.6rem; }
.signs-list li{ display:flex; gap:0.6rem; align-items:flex-start; }
.signs-list li::before{ content:"⚠"; color: var(--color-urgent); font-weight:700; flex:0 0 auto; }

/* Trust bar */
.trust-bar{ background: var(--color-badge-bg); color:#fff; padding: var(--sm) 0; }
.trust-bar .container{ display:flex; flex-wrap:wrap; gap:var(--md); justify-content:space-between; align-items:center; font-size:0.9rem; font-weight:600; }
.trust-bar span{ display:flex; align-items:center; gap:0.4rem; }

/* Stats / counters */
.stats{ display:grid; gap:var(--md); grid-template-columns: repeat(2,1fr); }
@media(min-width:700px){ .stats{ grid-template-columns: repeat(4,1fr); } }
.stat{ text-align:center; }
.stat .num{ font-family: var(--font-display); font-size:2.2rem; color: var(--color-primary); font-weight:700; }
.stat .label{ font-size:0.85rem; color: var(--color-ink-soft); font-weight:600; }

/* FAQ */
.faq-item{ border-bottom:1px solid var(--color-line); padding: var(--sm) 0; }
.faq-item summary{ cursor:pointer; font-weight:700; font-size:1.05rem; color: var(--color-primary-dark); list-style:none; display:flex; justify-content:space-between; gap:1rem; }
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::after{ content:"+"; font-size:1.4rem; color: var(--color-urgent); }
.faq-item[open] summary::after{ content:"–"; }
.faq-item p{ margin-top:0.6rem; }

/* Breadcrumbs */
.breadcrumbs{ font-size:0.85rem; color: var(--color-ink-soft); padding: 0.9rem 0; }
.breadcrumbs a{ color: var(--color-ink-soft); }
.breadcrumbs a:hover{ color: var(--color-urgent); }
.breadcrumbs .sep{ margin:0 0.4rem; }

/* Footer */
.site-footer{ background: var(--color-primary-dark); color:#cfd9e2; padding: var(--xl) 0 var(--lg); }
.site-footer h3{ color:#fff; font-size:1.05rem; }
.site-footer a{ color:#cfd9e2; }
.site-footer a:hover{ color:#fff; }
.footer-grid{ display:grid; gap:var(--lg); grid-template-columns:1fr; }
@media(min-width:800px){ .footer-grid{ grid-template-columns: 1.2fr 1fr 1fr 1fr; } }
.footer-grid ul{ list-style:none; padding:0; margin:0; display:grid; gap:0.4rem; font-size:0.9rem; }
.footer-bottom{ border-top:1px solid rgba(255,255,255,0.12); margin-top:var(--lg); padding-top:var(--md); font-size:0.82rem; display:flex; flex-wrap:wrap; gap:0.5rem; justify-content:space-between; }

/* Scroll reveal */
.reveal{ opacity:0; transform: translateY(16px); transition: opacity .5s ease, transform .5s ease; }
.reveal.is-visible{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
  html{ scroll-behavior:auto; }
}

/* About / license box */
.credential-box{ background:#fff; border:1px solid var(--color-line); border-radius: var(--radius-card); padding: var(--md); box-shadow: var(--shadow-card); }
.credential-box ul{ list-style:none; padding:0; margin:0; display:grid; gap:0.5rem; }
.credential-box li{ display:flex; gap:0.5rem; }
.credential-box li::before{ content:"✓"; color: var(--color-success); font-weight:700; }

/* Utility */
.mt-lg{ margin-top: var(--lg); }
.text-center{ text-align:center; }
.tag-list{ display:flex; flex-wrap:wrap; gap:0.5rem; }
.tag-list span{ background: var(--color-surface-alt); border:1px solid var(--color-line); padding:0.3rem 0.7rem; border-radius:999px; font-size:0.78rem; font-weight:600; color: var(--color-ink-soft); }