/* Shared styles for DataOn Thailand website */
:root{--brand:#1e40af;--brand-light:#3b82f6;--brand-dark:#1e3a8a;--accent:#06b6d4;}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Prompt','Sarabun',system-ui,sans-serif;color:#1f2937;line-height:1.7;background:#fff}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:1200px;margin:0 auto;padding:0 1.25rem}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid #e5e7eb}
.nav{display:flex;align-items:center;justify-content:space-between;padding:1rem 0}
.logo{font-weight:800;font-size:1.4rem;color:var(--brand-dark);display:flex;align-items:center;gap:.5rem}
.logo span{color:var(--accent)}
.nav-menu{display:flex;gap:1.5rem;list-style:none;align-items:center}
.nav-menu a{font-weight:500;color:#374151;transition:color .2s;font-size:.95rem}
.nav-menu a:hover,.nav-menu a.active{color:var(--brand)}
.btn{display:inline-block;padding:.75rem 1.5rem;border-radius:.5rem;font-weight:600;transition:all .2s;border:none;cursor:pointer;font-family:inherit}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;box-shadow:0 4px 14px rgba(30,64,175,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(30,64,175,.4)}
.btn-outline{border:2px solid var(--brand);color:var(--brand);background:transparent}
.btn-outline:hover{background:var(--brand);color:#fff}
.menu-toggle{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--brand-dark)}

/* Hero */
.hero{position:relative;color:#fff;padding:6rem 0;background:linear-gradient(135deg,rgba(30,58,138,.92),rgba(6,182,212,.85)),url('../images/hero.jpg') center/cover}
.hero-inner{max-width:760px}
.hero h1{font-size:clamp(2rem,4.5vw,3.5rem);font-weight:800;line-height:1.2;margin-bottom:1rem}
.hero p{font-size:1.15rem;margin-bottom:2rem;opacity:.95}
.hero .btn-primary{background:#fff;color:var(--brand-dark)}
.hero .btn-outline{border-color:#fff;color:#fff}
.hero .btn-outline:hover{background:#fff;color:var(--brand-dark)}

/* Page header (sub pages) */
.page-header{background:linear-gradient(135deg,var(--brand-dark),var(--brand));color:#fff;padding:4rem 0;text-align:center}
.page-header h1{font-size:clamp(1.8rem,3.5vw,2.75rem);font-weight:800;margin-bottom:.5rem}
.page-header p{opacity:.9;font-size:1.05rem}

/* Sections */
section{padding:4rem 0}
.section-title{text-align:center;margin-bottom:2.5rem}
.section-title h2{font-size:clamp(1.6rem,3vw,2.25rem);font-weight:800;color:var(--brand-dark);margin-bottom:.5rem}
.section-title p{color:#6b7280;max-width:640px;margin:0 auto}

/* Cards */
.grid{display:grid;gap:1.5rem}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.card{background:#fff;border-radius:1rem;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:transform .25s,box-shadow .25s;border:1px solid #f1f5f9}
.card:hover{transform:translateY(-6px);box-shadow:0 12px 28px rgba(30,64,175,.15)}
.card-img{height:200px;background:linear-gradient(135deg,var(--brand-light),var(--accent));display:flex;align-items:center;justify-content:center;font-size:3rem;color:#fff}
.card-body{padding:1.5rem}
.card-body h3{font-size:1.2rem;font-weight:700;margin-bottom:.5rem;color:var(--brand-dark)}
.card-body p{color:#6b7280;font-size:.95rem;margin-bottom:1rem}
.tag{display:inline-block;padding:.25rem .75rem;background:#dbeafe;color:var(--brand);border-radius:999px;font-size:.8rem;font-weight:600;margin-bottom:.75rem}

/* Feature alt section */
.alt{background:#f8fafc}

/* CTA */
.cta{background:linear-gradient(135deg,var(--brand-dark),var(--brand));color:#fff;text-align:center;padding:4rem 1.5rem;border-radius:1.5rem;margin:4rem auto;max-width:1100px}
.cta h2{font-size:2rem;margin-bottom:1rem}
.cta p{margin-bottom:2rem;opacity:.95}
.cta .btn-primary{background:#fff;color:var(--brand-dark)}

/* Content (legal/blog) */
.content{max-width:840px;margin:0 auto;padding:3rem 1.25rem}
.content h2{font-size:1.5rem;margin:2rem 0 .75rem;color:var(--brand-dark);font-weight:700}
.content h3{font-size:1.15rem;margin:1.25rem 0 .5rem;color:#111827;font-weight:600}
.content p,.content li{margin-bottom:.75rem;color:#374151}
.content ul,.content ol{padding-left:1.5rem;margin-bottom:1rem}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:2.5rem;align-items:start}
.contact-info{background:#f8fafc;padding:2rem;border-radius:1rem}
.contact-info h3{color:var(--brand-dark);margin-bottom:1rem;font-size:1.2rem}
.contact-info .item{display:flex;gap:.75rem;margin-bottom:1rem;align-items:flex-start}
.contact-info .icon{width:40px;height:40px;background:linear-gradient(135deg,var(--brand),var(--accent));border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0;font-weight:700}
.form-group{margin-bottom:1rem}
.form-group label{display:block;font-weight:600;margin-bottom:.4rem;color:#374151;font-size:.9rem}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:.75rem 1rem;border:1px solid #d1d5db;border-radius:.5rem;font-family:inherit;font-size:1rem;transition:border .2s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(30,64,175,.1)}

/* Footer */
.footer{background:#0f172a;color:#cbd5e1;padding:3rem 0 1.5rem;margin-top:4rem}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2rem;margin-bottom:2rem}
.footer h4{color:#fff;font-size:1rem;font-weight:700;margin-bottom:1rem}
.footer ul{list-style:none}
.footer li{margin-bottom:.5rem;font-size:.9rem}
.footer a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid #1e293b;padding-top:1.5rem;text-align:center;font-size:.85rem;color:#94a3b8}

@media (max-width:768px){
  .menu-toggle{display:block}
  .nav-menu{position:fixed;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:1.5rem;gap:1rem;border-bottom:1px solid #e5e7eb;transform:translateY(-150%);transition:transform .3s;align-items:flex-start}
  .nav-menu.open{transform:translateY(0)}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}