/* ============================================
   HashedBridge - Main Stylesheet
   Colors: Navy #1a2744 | Teal #0d9488 | Off-white #f8f9fa | Charcoal #212529
   ============================================ */

:root {
  --primary: #1a2744;
  --accent: #0d9488;
  --bg: #f8f9fa;
  --text: #212529;
  --white: #ffffff;
  --footer-bg: #1a2744;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.1);
  --radius: 8px;
  --radius-lg: 12px;
  --transition: 0.25s ease;
  --max-width: 1140px;
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:color var(--transition)}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;font-size:0.95rem;font-weight:600;border-radius:var(--radius);cursor:pointer;transition:all var(--transition);border:2px solid transparent;font-family:inherit}
.btn:focus-visible{outline:2px solid var(--white);outline-offset:2px}
.btn-primary{background:var(--white);color:var(--primary);border-color:var(--white)}
.btn-primary:hover{background:transparent;color:var(--white);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,0.2)}
.btn-outline{background:transparent;color:var(--white);border-color:rgba(255,255,255,0.6)}
.btn-outline:hover{border-color:var(--white);background:rgba(255,255,255,0.1);transform:translateY(-2px)}
.btn-solid{background:var(--accent);color:var(--white);border-color:var(--accent)}
.btn-solid:hover{background:#0f766e;border-color:#0f766e;transform:translateY(-2px);box-shadow:0 8px 24px rgba(13,148,136,0.3);color:var(--white)}

/* Header */
.site-header{position:sticky;top:0;z-index:1000;background:var(--white);box-shadow:var(--shadow-sm);transition:box-shadow var(--transition)}
.site-header.scrolled{box-shadow:var(--shadow-md)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{font-size:clamp(1.25rem,2vw,1.5rem);font-weight:800;color:var(--primary);letter-spacing:-0.5px}
.logo span{color:var(--accent)}

/* Navigation */
.nav{display:flex;align-items:center;gap:32px}
.nav-links{display:flex;align-items:center;gap:28px;list-style:none}
.nav-links a{font-size:0.9rem;font-weight:500;color:var(--text);position:relative;padding:4px 0}
.nav-links a:hover{color:var(--accent)}
.nav-links a::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:2px;background:var(--accent);transition:width var(--transition)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}

/* Dropdown / Mega Menu */
.dropdown{position:static}
.dropdown-toggle{display:flex;align-items:center;gap:4px;cursor:pointer}
.dropdown-toggle svg{width:12px;height:12px;transition:transform var(--transition)}
.dropdown-menu{position:absolute;top:calc(100% + 8px);left:0;background:var(--white);border-radius:var(--radius);box-shadow:0 8px 32px rgba(0,0,0,0.1);min-width:220px;padding:8px 0;opacity:0;visibility:hidden;transform:translateY(-6px);transition:all var(--transition);list-style:none;z-index:100}
.dropdown:hover .dropdown-menu,.dropdown:focus-within .dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown:hover .dropdown-toggle svg{transform:rotate(180deg)}
.dropdown-menu a{display:block;padding:10px 18px;font-size:0.875rem;font-weight:500;color:var(--text)}
.dropdown-menu a:hover{background:var(--bg);color:var(--accent)}
.mega-menu{
  position:absolute;top:100%;left:0;right:0;
  background:var(--white);border-top:1px solid #e9ecef;
  box-shadow:0 16px 40px rgba(0,0,0,0.12);
  padding:40px 0;z-index:999;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:all 0.2s ease;
}
.dropdown:hover .mega-menu,
.dropdown:focus-within .mega-menu,
.dropdown.open .mega-menu{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown:hover .dropdown-toggle svg{transform:rotate(180deg)}
.mega-menu-inner{
  max-width:var(--max-width);margin:0 auto;padding:0 24px;
  display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;
}
.mega-col h4{
  font-size:0.82rem;font-weight:700;color:var(--accent);
  text-transform:uppercase;letter-spacing:1px;margin-bottom:16px;
}
.mega-col ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.mega-col ul a{
  display:block;padding:6px 0;font-size:0.92rem;font-weight:500;color:var(--text);
  transition:color var(--transition);
}
.mega-col ul a:hover{color:var(--accent)}
.mega-col ul a .desc{
  display:block;font-size:0.78rem;color:#6c757d;font-weight:400;margin-top:1px;
}
/* Mega menu featured card */
.mega-featured{
  background:var(--bg);border-radius:var(--radius);padding:24px;
  display:flex;flex-direction:column;justify-content:space-between;
}
.mega-featured h4{font-size:1rem;color:var(--primary);margin-bottom:8px;text-transform:none;letter-spacing:0}
.mega-featured p{font-size:0.85rem;color:#5a6370;line-height:1.6;margin-bottom:16px}
.mega-featured .btn-sm{
  display:inline-block;padding:8px 18px;font-size:0.85rem;font-weight:600;
  background:var(--accent);color:var(--white);border-radius:var(--radius);
  text-align:center;transition:all var(--transition);
}
.mega-featured .btn-sm:hover{background:#0f766e;color:var(--white)}

/* Language Toggle */
.lang-toggle{display:flex;align-items:center;background:var(--bg);border-radius:20px;padding:3px;gap:0;border:1px solid #e2e5e9}
.lang-btn{padding:6px 14px;font-size:0.8rem;font-weight:600;border:none;background:transparent;border-radius:18px;cursor:pointer;transition:all var(--transition);color:var(--text);font-family:inherit}
.lang-btn.active{background:var(--primary);color:var(--white);box-shadow:0 2px 6px rgba(26,39,68,0.3)}

/* Hamburger */
.hamburger{display:none;flex-direction:column;justify-content:center;gap:5px;width:28px;height:28px;cursor:pointer;border:none;background:none;padding:0}
.hamburger span{display:block;width:100%;height:2.5px;background:var(--primary);border-radius:2px;transition:all var(--transition)}
.hamburger.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* Mobile Nav */
.mobile-nav{display:none;position:fixed;top:72px;left:0;right:0;bottom:0;background:var(--white);padding:32px 24px;z-index:999;overflow-y:auto}
.mobile-nav.open{display:block;animation:fadeIn 0.3s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}
.mobile-nav-links{list-style:none;display:flex;flex-direction:column;gap:0}
.mobile-nav-links li{border-bottom:1px solid #eee}
.mobile-nav-links a{display:block;padding:16px 0;font-size:1rem;font-weight:500}
.mobile-nav-links a:hover{color:var(--accent)}
.mobile-nav .lang-toggle{margin-top:24px;justify-content:center;width:fit-content}

/* Hero */
.hero{position:relative;background:linear-gradient(135deg,var(--primary) 0%,#1e3a5f 40%,var(--accent) 100%);padding:120px 0 100px;overflow:hidden;min-height:540px;display:flex;align-items:center}
.hero-bg-circles{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.hero-bg-circles::before,.hero-bg-circles::after{content:'';position:absolute;border-radius:50%;border:1px solid rgba(255,255,255,0.08)}
.hero-bg-circles::before{width:500px;height:500px;top:-150px;right:-100px;background:radial-gradient(circle,rgba(13,148,136,0.15) 0%,transparent 70%)}
.hero-bg-circles::after{width:350px;height:350px;bottom:-100px;left:-50px;background:radial-gradient(circle,rgba(255,255,255,0.05) 0%,transparent 70%)}
.hero-circle-1{position:absolute;width:200px;height:200px;border-radius:50%;border:1px solid rgba(255,255,255,0.06);top:60%;right:20%}
.hero-circle-2{position:absolute;width:120px;height:120px;border-radius:50%;background:rgba(13,148,136,0.1);top:20%;left:10%}
.hero-circle-3{position:absolute;width:80px;height:80px;border-radius:50%;border:1px solid rgba(255,255,255,0.1);bottom:20%;right:10%}
.hero-content{position:relative;z-index:2;max-width:680px}
.hero h1{font-size:clamp(2.2rem,5vw,3.5rem);font-weight:800;color:var(--white);line-height:1.15;margin-bottom:20px;letter-spacing:-1px}
.hero-subtitle{font-size:clamp(1rem,2vw,1.2rem);color:rgba(255,255,255,0.85);line-height:1.7;margin-bottom:36px;max-width:560px}
.hero-buttons{display:flex;gap:16px;flex-wrap:wrap}

/* Page Header (inner pages) */
.page-header{background:linear-gradient(135deg,var(--primary),#1e3a5f);color:var(--white);padding:60px 0;text-align:center;position:relative;overflow:hidden}
.page-header h1{color:var(--white);font-size:clamp(1.8rem,4vw,2.6rem);margin-bottom:8px}
.page-header .breadcrumb{color:rgba(255,255,255,0.7);font-size:0.9rem}
.page-header .breadcrumb a{color:rgba(255,255,255,0.9)}
.page-header .breadcrumb a:hover{color:var(--white)}

/* Sections */
.section{padding:80px 0}
.section-header{text-align:center;margin-bottom:56px}
.section-header h2{font-size:clamp(1.75rem,3.5vw,2.5rem);font-weight:800;color:var(--primary);margin-bottom:12px;letter-spacing:-0.5px}
.section-header p{font-size:1.05rem;color:#5a6370;max-width:540px;margin:0 auto}

/* Service Cards */
.services-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.service-card{background:var(--white);border-radius:var(--radius-lg);padding:40px 32px;transition:all var(--transition);box-shadow:var(--shadow-sm);border:1px solid rgba(0,0,0,0.04);position:relative;overflow:hidden}
.service-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transition:opacity var(--transition)}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.service-card:hover::before{opacity:1}
.service-icon{width:56px;height:56px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;margin-bottom:20px;background:linear-gradient(135deg,rgba(13,148,136,0.1),rgba(26,39,68,0.05))}
.service-icon svg{width:28px;height:28px;color:var(--accent)}
.service-card h3{font-size:1.2rem;font-weight:700;color:var(--primary);margin-bottom:12px}
.service-card p{font-size:0.925rem;color:#5a6370;line-height:1.7;margin-bottom:20px}
.learn-more{display:inline-flex;align-items:center;gap:6px;font-size:0.9rem;font-weight:600;color:var(--accent);transition:gap var(--transition)}
.learn-more:hover{gap:10px}

/* Content Area */
.content-area{padding:60px 0}
.content-area .lead{font-size:1.15rem;color:var(--primary);font-weight:600;margin-bottom:32px;line-height:1.6}
.content-area h2{margin:40px 0 16px;font-size:clamp(1.4rem,3vw,1.8rem);color:var(--primary)}
.content-area h2:first-of-type{margin-top:0}
.content-area h3{margin:28px 0 10px;font-size:1.15rem;color:var(--primary)}
.content-area p{margin-bottom:16px;color:#495057}

/* Service Checklist */
.service-checklist{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px;margin-bottom:0}
.service-checklist li{background:var(--white);padding:14px 18px;border-radius:var(--radius);border:1px solid rgba(0,0,0,0.05);display:flex;align-items:center;gap:10px;font-weight:500;color:var(--primary);box-shadow:var(--shadow-sm)}
.service-checklist li::before{content:'✓';color:var(--accent);font-weight:700;font-size:1.1rem;flex-shrink:0}

/* Case Study Cards */
.case-study{background:var(--white);border-radius:var(--radius-lg);padding:32px;border:1px solid rgba(0,0,0,0.05);margin-bottom:24px;box-shadow:var(--shadow-sm);transition:box-shadow var(--transition)}
.case-study:hover{box-shadow:var(--shadow-md)}
.case-study h3{margin-top:0;margin-bottom:16px}
.case-study .meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.case-study .tag{background:rgba(13,148,136,0.1);color:var(--accent);padding:4px 12px;border-radius:20px;font-size:0.82rem;font-weight:600}
.case-study p{margin-bottom:10px}
.case-study p strong{color:var(--primary)}
.case-study .stat{color:var(--accent);font-weight:700;margin-top:12px;font-size:1.05rem}

/* Contact Grid */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px;margin-bottom:48px}
.contact-card{background:var(--white);border-radius:var(--radius-lg);padding:28px 24px;text-align:center;box-shadow:var(--shadow-sm);border:1px solid rgba(0,0,0,0.04);transition:all var(--transition)}
.contact-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.contact-card-icon{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,rgba(13,148,136,0.1),rgba(26,39,68,0.05));display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.contact-card-icon svg{width:24px;height:24px;color:var(--accent)}
.contact-card h3{font-size:0.95rem;color:var(--primary);margin-bottom:6px}
.contact-card p{font-size:1rem;color:var(--text);font-weight:500}
.contact-card a{color:var(--accent);font-weight:600}

/* Client Logo Grid */
.clients-section{background:var(--white);padding:60px 0;text-align:center}
.clients-grid{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;
  gap:36px 48px;margin-top:36px;
}
.clients-grid img{
  height:38px;width:auto;max-width:150px;
  opacity:0.5;transition:opacity 0.3s;
  filter:invert(1);
}
.clients-grid img:hover{opacity:1;filter:invert(1)}

/* Contact Bar (dark) */
.contact-bar{background:var(--primary);padding:60px 0}
.contact-bar-inner{display:flex;flex-direction:column;align-items:center;text-align:center;gap:32px}
.contact-methods{display:flex;gap:40px;flex-wrap:wrap;justify-content:center}
.contact-method{display:flex;align-items:center;gap:12px;color:var(--white);font-size:0.95rem;font-weight:500;transition:color var(--transition)}
.contact-method:hover{color:var(--accent)}
.contact-method-icon{width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,0.1);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.contact-method-icon svg{width:18px;height:18px}
.contact-subtitle{font-size:0.9rem;color:rgba(255,255,255,0.5);font-weight:400}

/* CTA Banner */
.cta-banner{background:linear-gradient(135deg,var(--accent),#0f766e);color:var(--white);padding:60px;text-align:center;border-radius:var(--radius-lg);margin:60px auto;max-width:var(--max-width)}
.cta-banner h2{color:var(--white);margin-bottom:12px;font-size:clamp(1.5rem,3vw,2rem)}
.cta-banner p{opacity:0.9;margin-bottom:24px;max-width:500px;margin-left:auto;margin-right:auto}

/* Contact Form */
.contact-form{max-width:600px;margin:0 auto;display:flex;flex-direction:column;gap:18px}
.contact-form input,.contact-form textarea{padding:14px 16px;border:1px solid #dee2e6;border-radius:var(--radius);font-size:1rem;font-family:inherit;transition:border-color var(--transition)}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(13,148,136,0.12)}
.contact-form textarea{resize:vertical;min-height:120px}

/* Footer */
.site-footer{background:var(--footer-bg);padding:64px 0 0;color:rgba(255,255,255,0.7)}
.footer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,0.1)}
.footer-col h4{font-size:0.9rem;font-weight:700;color:var(--white);text-transform:uppercase;letter-spacing:1px;margin-bottom:20px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:12px}
.footer-col ul a{font-size:0.875rem;color:rgba(255,255,255,0.6);transition:color var(--transition)}
.footer-col ul a:hover{color:var(--accent)}
.footer-bottom{padding:24px 0;text-align:center;font-size:0.8rem;color:rgba(255,255,255,0.45);line-height:1.8}

/* Portfolio Grid */
.portfolio-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.portfolio-card{
  background:var(--white);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-sm);transition:all var(--transition);
  border:1px solid rgba(0,0,0,0.04);
}
.portfolio-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.portfolio-card-image{
  width:100%;height:220px;overflow:hidden;position:relative;
  background:linear-gradient(135deg,var(--primary),#1e3a5f);
  display:flex;align-items:center;justify-content:center;
}
.portfolio-card-image img{width:100%;height:100%;object-fit:cover}
.portfolio-card-image .placeholder-icon{width:56px;height:56px;color:rgba(255,255,255,0.6)}
.portfolio-card-body{padding:24px 20px}
.portfolio-card-body h3{font-size:1.1rem;font-weight:700;color:var(--primary);margin-bottom:6px}
.portfolio-card-body .category{font-size:0.82rem;color:var(--accent);font-weight:600;margin-bottom:8px}
.portfolio-card-body p{font-size:0.88rem;color:#5a6370;line-height:1.6}

/* Portfolio Detail */
.portfolio-hero{width:100%;max-height:480px;overflow:hidden;background:linear-gradient(135deg,var(--primary),#1e3a5f)}
.portfolio-hero img{width:100%;height:100%;object-fit:cover;max-height:480px}
.portfolio-hero-placeholder{width:100%;height:300px;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,0.3)}
.portfolio-hero-placeholder svg{width:80px;height:80px}
.portfolio-detail{padding:60px 0}
.portfolio-detail .meta-row{display:flex;gap:40px;flex-wrap:wrap;margin-bottom:32px;padding-bottom:24px;border-bottom:1px solid #e9ecef}
.portfolio-detail .meta-item{min-width:140px}
.portfolio-detail .meta-item .label{font-size:0.78rem;text-transform:uppercase;letter-spacing:1px;color:#6c757d;margin-bottom:4px}
.portfolio-detail .meta-item .value{font-size:0.95rem;font-weight:600;color:var(--primary)}
.portfolio-detail .tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:24px}
.portfolio-detail .tags span{background:rgba(13,148,136,0.1);color:var(--accent);padding:6px 14px;border-radius:20px;font-size:0.82rem;font-weight:600}

/* Responsive */
@media (max-width:768px){
  .mega-menu-inner{grid-template-columns:1fr;gap:24px}
  .mega-menu{padding:24px 0}
  .portfolio-grid{grid-template-columns:1fr}
  .portfolio-detail .meta-row{gap:20px}
  .portfolio-hero-placeholder{height:200px}
  .nav-links,.nav .lang-toggle{display:none}
  .hamburger{display:flex}
  .header-inner .lang-toggle{display:flex}
  .hero{padding:80px 0 70px;min-height:auto}
  .hero h1{font-size:2rem}
  .hero-buttons{flex-direction:column}
  .hero-buttons .btn{text-align:center;justify-content:center}
  .services-grid{grid-template-columns:1fr;gap:20px}
  .section{padding:60px 0}
  .contact-methods{flex-direction:column;gap:20px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .section-header{margin-bottom:40px}
  .service-checklist{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .cta-banner{padding:40px 28px;margin:40px 16px;border-radius:var(--radius)}
}
@media (min-width:769px) and (max-width:1024px){
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .nav-links{gap:20px}
  .service-checklist{grid-template-columns:repeat(2,1fr)}
}