/* ============================================
   Serendib Estates & Construction — Site Theme
   White base, deep charcoal text, elegant gold accent
   ============================================ */
:root{
  --white:#ffffff;
  --bg-soft:#f7f6f3;
  --ink:#1e2624;
  --ink-soft:#5a6462;
  --line:#e7e4dc;
  --gold:#b8935a;
  --gold-dark:#93733f;
  --charcoal:#16241f;
  --charcoal-2:#1f332b;
  --radius:10px;
  --shadow:0 10px 30px rgba(20,30,25,.08);
  --shadow-lg:0 20px 50px rgba(20,30,25,.16);
  --serif: Georgia, 'Times New Roman', serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--ink);
  background:var(--white);
  line-height:1.65;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;color:var(--charcoal);margin:0 0 .5em;line-height:1.2;}
p{margin:0 0 1em;}
.container{max-width:1180px;margin:0 auto;padding:0 24px;}
ul{padding:0;list-style:none;margin:0;}

/* ---------- Topbar ---------- */
.topbar{background:var(--charcoal);color:#d8ded9;font-size:.85rem;}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;padding:8px 24px;flex-wrap:wrap;gap:6px;}
.topbar-contact a{margin-right:18px;color:#d8ded9;}
.topbar-contact a:hover{color:var(--gold);}
.topbar-note{opacity:.85;}

/* ---------- Header / Nav ---------- */
.site-header{background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;}
.site-header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;position:relative;}
.brand{display:flex;align-items:center;gap:12px;}
.brand-logo{height:48px;width:auto;}
.brand-mark{
  width:48px;height:48px;border-radius:50%;background:var(--charcoal);color:var(--gold);
  display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-weight:700;font-size:1.1rem;
}
.brand-text{display:flex;flex-direction:column;}
.brand-name{font-family:var(--serif);font-weight:700;font-size:1.25rem;color:var(--charcoal);letter-spacing:.3px;}
.brand-name.light{color:var(--white);}
.brand-tagline{font-size:.72rem;color:var(--ink-soft);text-transform:uppercase;letter-spacing:1px;}

.site-nav{display:flex;align-items:center;gap:26px;}
.site-nav a{font-weight:600;font-size:.95rem;color:var(--ink);padding:6px 0;border-bottom:2px solid transparent;}
.site-nav a:hover,.site-nav a.active{color:var(--gold-dark);border-color:var(--gold);}
.site-nav a.btn.btn-nav{
  background:var(--charcoal);color:#fff;padding:10px 20px;border-radius:30px;border:none;
}
.site-nav a.btn.btn-nav:hover{background:var(--gold-dark);color:#fff;}
.nav-toggle{display:none;}
.nav-burger{display:none;font-size:1.6rem;cursor:pointer;}

@media (max-width:900px){
  .nav-burger{display:block;}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;background:var(--white);
    flex-direction:column;align-items:stretch;gap:0;border-top:1px solid var(--line);
    box-shadow:var(--shadow-lg);display:none;
  }
  .site-nav a{padding:16px 24px;border-bottom:1px solid var(--line);}
  .site-nav a.btn.btn-nav{border-radius:0;text-align:center;}
  .nav-toggle:checked ~ .site-nav{display:flex;}
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-block;padding:14px 28px;border-radius:30px;font-weight:700;
  border:2px solid var(--charcoal);cursor:pointer;font-size:.95rem;transition:.2s ease;
}
.btn-primary{background:var(--gold);border-color:var(--gold);color:#fff;}
.btn-primary:hover{background:var(--gold-dark);border-color:var(--gold-dark);}
.btn-outline{background:transparent;border-color:var(--white);color:var(--white);}
.btn-outline:hover{background:var(--white);color:var(--charcoal);}
.btn-dark{background:var(--charcoal);border-color:var(--charcoal);color:#fff;}
.btn-dark:hover{background:var(--gold-dark);border-color:var(--gold-dark);}
.btn-block{display:block;width:100%;text-align:center;}
.btn-sm{padding:8px 16px;font-size:.8rem;}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:#fff;min-height:640px;display:flex;align-items:center;
  background-size:cover;background-position:center;
}
.hero::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(100deg, rgba(15,24,20,.88) 20%, rgba(15,24,20,.55) 60%, rgba(15,24,20,.35) 100%);
}
.hero-content{position:relative;z-index:2;max-width:640px;}
.hero-eyebrow{text-transform:uppercase;letter-spacing:2px;color:var(--gold);font-weight:700;font-size:.85rem;margin-bottom:14px;display:inline-block;}
.hero h1{color:#fff;font-size:2.8rem;margin-bottom:.4em;}
.hero p.lead{font-size:1.15rem;color:#e7e9e6;margin-bottom:1.8em;}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap;}
.hero-stats{
  position:relative;z-index:2;display:flex;gap:40px;margin-top:56px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.25);padding-top:28px;
}
.hero-stat b{display:block;font-family:var(--serif);font-size:2rem;color:var(--gold);}
.hero-stat span{font-size:.85rem;color:#dfe3e0;}

@media (max-width:700px){
  .hero{min-height:auto;padding:90px 0 60px;}
  .hero h1{font-size:2rem;}
}

/* ---------- Section basics ---------- */
.section{padding:88px 0;}
.section-soft{background:var(--bg-soft);}
.section-dark{background:var(--charcoal);color:#e6e9e7;}
.section-dark h2, .section-dark h3{color:#fff;}
.section-head{max-width:680px;margin:0 auto 52px;text-align:center;}
.eyebrow{
  text-transform:uppercase;letter-spacing:2px;color:var(--gold-dark);font-weight:700;
  font-size:.8rem;display:block;margin-bottom:10px;
}
.section-dark .eyebrow{color:var(--gold);}
.section-head h2{font-size:2.1rem;}
.section-head p{color:var(--ink-soft);font-size:1.05rem;}
.section-dark .section-head p{color:#c7cdc9;}

/* ---------- Trust bar ---------- */
.trust-bar{background:var(--charcoal);color:#fff;padding:22px 0;}
.trust-bar .container{display:flex;flex-wrap:wrap;justify-content:space-around;gap:18px;text-align:center;}
.trust-item{font-size:.9rem;color:#dfe3e0;}
.trust-item b{color:var(--gold);display:block;font-family:var(--serif);font-size:1.5rem;}

/* ---------- Service cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:32px;}
@media (max-width:900px){.grid-3{grid-template-columns:1fr;}.grid-2{grid-template-columns:1fr;}}

.card{
  background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  border:1px solid var(--line);display:flex;flex-direction:column;transition:transform .2s ease, box-shadow .2s ease;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);}
.card-img{height:220px;background-size:cover;background-position:center;}
.card-body{padding:26px;flex:1;display:flex;flex-direction:column;}
.card-body h3{font-size:1.25rem;}
.card-body p{color:var(--ink-soft);flex:1;}
.card-tag{
  display:inline-block;background:var(--bg-soft);color:var(--gold-dark);font-size:.72rem;font-weight:700;
  text-transform:uppercase;letter-spacing:1px;padding:5px 12px;border-radius:20px;margin-bottom:14px;width:fit-content;
}
.card-link{font-weight:700;color:var(--gold-dark);}
.card-link:after{content:' →';}

/* ---------- Alternating feature rows (services page) ---------- */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:72px 0;border-bottom:1px solid var(--line);}
.feature-row:last-child{border-bottom:none;}
.feature-row.reverse .feature-img{order:2;}
.feature-img img{border-radius:var(--radius);box-shadow:var(--shadow-lg);width:100%;height:400px;object-fit:cover;}
.feature-list li{padding:8px 0 8px 30px;position:relative;color:var(--ink-soft);}
.feature-list li:before{content:'✓';position:absolute;left:0;color:var(--gold-dark);font-weight:700;}
@media (max-width:900px){
  .feature-row{grid-template-columns:1fr;gap:28px;padding:44px 0;}
  .feature-row.reverse .feature-img{order:0;}
  .feature-img img{height:280px;}
}

/* ---------- Testimonials ---------- */
.testimonial-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);
  display:flex;flex-direction:column;gap:14px;height:100%;
}
.stars{color:var(--gold);letter-spacing:2px;}
.testimonial-msg{font-style:italic;color:var(--ink);flex:1;}
.testimonial-person{display:flex;align-items:center;gap:12px;}
.avatar{
  width:44px;height:44px;border-radius:50%;background:var(--charcoal);color:var(--gold);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-family:var(--serif);flex-shrink:0;
}
.testimonial-person b{display:block;font-size:.95rem;}
.testimonial-person span{font-size:.8rem;color:var(--ink-soft);}
.testimonial-filters{display:flex;justify-content:center;gap:10px;margin-bottom:36px;flex-wrap:wrap;}
.testimonial-filters button{
  background:var(--white);border:1px solid var(--line);padding:8px 18px;border-radius:20px;cursor:pointer;font-weight:600;
}
.testimonial-filters button.active,.testimonial-filters button:hover{background:var(--charcoal);color:#fff;border-color:var(--charcoal);}

/* ---------- CTA banner ---------- */
.cta-banner{
  background:linear-gradient(120deg,var(--charcoal),var(--charcoal-2));color:#fff;border-radius:var(--radius);
  padding:56px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;
}
.cta-banner h3{color:#fff;margin-bottom:.3em;}
.cta-banner p{color:#cfd5d1;margin:0;}

/* ---------- Forms ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
@media (max-width:700px){.form-grid{grid-template-columns:1fr;}}
.form-group{display:flex;flex-direction:column;gap:6px;margin-bottom:18px;}
.form-group.full{grid-column:1 / -1;}
label{font-weight:600;font-size:.88rem;color:var(--charcoal);}
input,select,textarea{
  padding:13px 14px;border:1px solid var(--line);border-radius:8px;font-family:var(--sans);font-size:.95rem;
  background:var(--white);color:var(--ink);
}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--gold);}
textarea{resize:vertical;min-height:120px;}
.form-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:36px;box-shadow:var(--shadow);}
.alert{padding:16px 18px;border-radius:8px;margin-bottom:20px;font-weight:600;}
.alert-success{background:#eaf6ed;color:#256b3a;border:1px solid #b7e0c2;}
.alert-error{background:#fbeaea;color:#a3312c;border:1px solid #f0bcbb;}

/* ---------- Contact info blocks ---------- */
.contact-info-item{display:flex;gap:16px;margin-bottom:26px;}
.contact-info-icon{
  width:46px;height:46px;border-radius:50%;background:var(--bg-soft);color:var(--gold-dark);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:1.2rem;
}

/* ---------- Footer ---------- */
.site-footer{background:var(--charcoal);color:#c7cdc9;padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.3fr;gap:36px;padding-bottom:44px;}
.footer-brand{margin-bottom:14px;}
.footer-about{font-size:.9rem;color:#b3bab5;}
.footer-social{display:flex;gap:10px;margin-top:16px;}
.footer-social .social-icon{
  width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);color:var(--gold);border:1px solid rgba(255,255,255,.14);
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.footer-social .social-icon:hover{background:var(--gold);color:var(--charcoal);transform:translateY(-2px);}
.site-footer h4{color:#fff;font-family:var(--sans);font-size:1rem;margin-bottom:16px;text-transform:uppercase;letter-spacing:1px;}
.footer-links li{margin-bottom:10px;font-size:.9rem;}
.footer-links a:hover{color:var(--gold);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;font-size:.8rem;}
.footer-bottom-inner{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;color:#8f9791;}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:600px){.footer-grid{grid-template-columns:1fr;}}

/* ---------- WhatsApp floating button ---------- */
.whatsapp-float{
  position:fixed;bottom:24px;right:24px;width:60px;height:60px;background:#25D366;color:#fff;
  border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(0,0,0,.3);
  z-index:100;animation:pulse 2.4s infinite;
}
.whatsapp-float:hover{background:#1ebe5a;}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(37,211,102,.5),0 8px 24px rgba(0,0,0,.3);}
  70%{box-shadow:0 0 0 14px rgba(37,211,102,0),0 8px 24px rgba(0,0,0,.3);}
  100%{box-shadow:0 0 0 0 rgba(37,211,102,0),0 8px 24px rgba(0,0,0,.3);}
}

/* ---------- Misc ---------- */
.text-center{text-align:center;}
.mt-40{margin-top:40px;}
.mb-0{margin-bottom:0;}
.badge-pill{background:var(--bg-soft);color:var(--gold-dark);padding:4px 12px;border-radius:20px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px;}
.divider-gold{width:60px;height:3px;background:var(--gold);margin:0 auto 20px;}