/* ===================================================
   Itthikorn Construction — Frontend
   Sky Blue Trust Theme · ตรงตามโลโก้ AT
   =================================================== */

:root{
  --primary:#2D8FCC;
  --primary-dark:#1A5F8C;
  --primary-darker:#134D71;
  --primary-light:#E8F3FB;
  --accent:#F39C12;
  --accent-light:#FFB347;
  --accent-dark:#D9890B;
  --steel:#5A6B7B;
  --gray-1:#8A98A7;
  --gray-2:#D7DDE3;
  --gray-3:#EEF1F4;
  --off:#F4F8FB;
  --white:#FFFFFF;
  --text:#1F2C3A;
  --text-2:#3F526B;
  --green:#2E9D6F;
  --red:#C0392B;
  --shadow-sm:0 2px 8px rgba(26,95,140,.08);
  --shadow:0 6px 24px rgba(26,95,140,.10);
  --shadow-lg:0 14px 40px rgba(26,95,140,.16);
  --radius:10px;
  --container:1200px;
  --header-h:74px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:'Sarabun',system-ui,-apple-system,sans-serif;
  color:var(--text);background:var(--white);
  line-height:1.6;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{font-family:'Prompt',sans-serif;color:var(--primary-darker);font-weight:700;line-height:1.2;letter-spacing:-.01em;}
h1{font-size:clamp(28px,4.5vw,46px);}
h2{font-size:clamp(24px,3.5vw,34px);}
h3{font-size:clamp(18px,2.5vw,22px);}
h4{font-size:17px;}
p{color:var(--text-2);}
a{color:var(--primary);text-decoration:none;transition:color .15s;}
a:hover{color:var(--primary-dark);}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;cursor:pointer;border:none;background:transparent;}
ul{list-style:none;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ============== HEADER ============== */
.site-header{
  position:sticky;top:0;background:#fff;z-index:100;
  border-bottom:1px solid var(--gray-2);
}
.nav{display:flex;justify-content:space-between;align-items:center;height:var(--header-h);}
.nav .brand{display:flex;align-items:center;gap:12px;text-decoration:none;}
.nav .brand img{width:48px;height:48px;border-radius:50%;object-fit:cover;}
.nav .brand .name{font-family:'Prompt';font-weight:700;font-size:15px;color:var(--primary-darker);line-height:1.2;}
.nav .brand .name .sub{display:block;font-size:11px;color:var(--steel);font-weight:400;margin-top:1px;letter-spacing:.02em;}

.nav-menu{display:flex;gap:4px;align-items:center;}
.nav-menu a{
  padding:8px 14px;border-radius:6px;font-family:'Prompt';font-weight:500;font-size:14.5px;
  color:var(--text);transition:all .15s;
}
.nav-menu a:hover{background:var(--off);color:var(--primary);}
.nav-menu a.active{color:var(--primary-dark);background:var(--primary-light);}

.nav-cta{display:flex;gap:10px;align-items:center;}
.nav-toggle{display:none;font-size:24px;padding:6px;color:var(--primary-darker);}

@media (max-width:920px){
  .nav-menu, .nav-cta .btn{display:none;}
  .nav-toggle{display:block;}
  .nav-menu.open{
    display:flex;flex-direction:column;align-items:stretch;
    position:absolute;top:var(--header-h);left:0;right:0;
    background:#fff;padding:14px;gap:2px;border-top:1px solid var(--gray-2);box-shadow:var(--shadow);
  }
  .nav-menu.open a{padding:12px 16px;}
}

/* ============== BUTTONS ============== */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;border-radius:8px;
  font-family:'Prompt';font-weight:500;font-size:14.5px;
  transition:all .2s;cursor:pointer;border:none;line-height:1;
  text-decoration:none;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 4px 12px rgba(243,156,18,.3);}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 6px 16px rgba(243,156,18,.4);color:#fff;}
.btn-secondary{background:var(--primary);color:#fff;}
.btn-secondary:hover{background:var(--primary-dark);color:#fff;}
.btn-outline{background:transparent;color:var(--primary-dark);border:1.5px solid var(--primary);}
.btn-outline:hover{background:var(--primary);color:#fff;}
.btn-white{background:#fff;color:var(--primary-dark);}
.btn-white:hover{background:var(--off);color:var(--primary-dark);}
.btn-lg{padding:14px 28px;font-size:16px;}

/* ============== HERO ============== */
.hero{
  position:relative;
  background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 60%,var(--primary-darker) 100%);
  color:#fff;overflow:hidden;padding:80px 0 100px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 85% 20%,rgba(243,156,18,.25) 0,transparent 40%),
    radial-gradient(circle at 15% 80%,rgba(255,255,255,.08) 0,transparent 50%);
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.hero .tag{
  display:inline-block;background:rgba(255,255,255,.1);color:var(--accent-light);
  font-family:'Prompt';font-size:12px;padding:6px 14px;border-radius:4px;
  letter-spacing:.1em;text-transform:uppercase;margin-bottom:18px;
  border:1px solid rgba(255,255,255,.15);
}
.hero h1{color:#fff;margin-bottom:18px;max-width:780px;}
.hero h1 .accent{color:var(--accent-light);}
.hero .lead{font-size:clamp(16px,1.8vw,19px);color:rgba(255,255,255,.88);max-width:680px;margin-bottom:32px;line-height:1.6;}
.hero .cta-group{display:flex;gap:12px;flex-wrap:wrap;}
.hero .stats{display:flex;gap:36px;margin-top:54px;flex-wrap:wrap;}
.hero .stats .stat .num{font-family:'Prompt';font-size:36px;font-weight:700;color:var(--accent-light);line-height:1;}
.hero .stats .stat .lbl{font-size:13px;color:rgba(255,255,255,.7);margin-top:4px;font-family:'Prompt';}

.page-hero{background:linear-gradient(135deg,var(--primary-dark),var(--primary));color:#fff;padding:54px 0 64px;position:relative;overflow:hidden;}
.page-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 90% 30%,rgba(243,156,18,.2) 0,transparent 40%);pointer-events:none;}
.page-hero .container{position:relative;z-index:2;}
.page-hero .breadcrumb{font-size:13px;color:rgba(255,255,255,.7);font-family:'Prompt';margin-bottom:8px;}
.page-hero .breadcrumb a{color:rgba(255,255,255,.85);}
.page-hero h1{color:#fff;margin-bottom:8px;}
.page-hero p{color:rgba(255,255,255,.88);max-width:680px;}

/* ============== SECTIONS ============== */
.section{padding:72px 0;}
.section.alt{background:var(--off);}
.section-head{text-align:center;margin-bottom:48px;max-width:680px;margin-left:auto;margin-right:auto;}
.section-head .tag{
  display:inline-block;color:var(--accent);font-family:'Prompt';font-size:12px;
  letter-spacing:.15em;text-transform:uppercase;margin-bottom:12px;font-weight:600;
}
.section-head h2{margin-bottom:14px;}
.section-head h2 .bar{display:block;width:60px;height:4px;background:var(--accent);border-radius:2px;margin:18px auto 0;}
.section-head p{color:var(--steel);font-size:16px;}

/* ============== GRID ============== */
.grid{display:grid;gap:24px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
@media (max-width:880px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}}
@media (max-width:600px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}}

/* ============== CARDS ============== */
.feature-card{background:#fff;border:1px solid var(--gray-2);border-radius:var(--radius);padding:28px;transition:all .25s;}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--primary-light);}
.feature-card .icon{width:54px;height:54px;border-radius:12px;background:var(--primary-light);color:var(--primary-dark);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px;}
.feature-card.accent .icon{background:rgba(243,156,18,.15);color:var(--accent-dark);}
.feature-card h3{margin-bottom:8px;font-size:18px;}
.feature-card p{font-size:14.5px;color:var(--text-2);}

.service-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:all .25s;border:1px solid var(--gray-3);}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.service-card .thumb{height:180px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));display:flex;align-items:center;justify-content:center;color:#fff;font-size:54px;position:relative;overflow:hidden;}
.service-card .thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.service-card .body{padding:22px;}
.service-card h3{font-size:17px;margin-bottom:6px;}
.service-card p{font-size:14px;color:var(--text-2);}

.portfolio-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:all .25s;border:1px solid var(--gray-3);cursor:pointer;}
.portfolio-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.portfolio-card .thumb{aspect-ratio:4/3;background:linear-gradient(135deg,var(--primary-light),var(--gray-3));display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:48px;overflow:hidden;position:relative;}
.portfolio-card .thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.portfolio-card .thumb .slide-img{opacity:0;transition:opacity .8s ease;}
.portfolio-card .thumb .slide-img.active{opacity:1;}
.portfolio-card .body{padding:20px;}
.portfolio-card .category{font-family:'Prompt';font-size:11px;color:var(--accent);letter-spacing:.1em;text-transform:uppercase;font-weight:600;margin-bottom:6px;}
.portfolio-card h3{font-size:16px;margin-bottom:4px;}
.portfolio-card .meta{font-size:13px;color:var(--gray-1);font-family:'Prompt';}
.portfolio-card .desc{font-size:13.5px;color:var(--text-2);margin-top:8px;line-height:1.5;}

.team-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);text-align:center;border:1px solid var(--gray-3);}
.team-card .photo{aspect-ratio:1;background:var(--primary-light);display:flex;align-items:center;justify-content:center;font-size:60px;color:var(--primary);overflow:hidden;position:relative;}
.team-card .photo img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.team-card .body{padding:20px;}
.team-card h3{font-size:17px;margin-bottom:4px;}
.team-card .role{font-family:'Prompt';font-size:13px;color:var(--accent);font-weight:500;margin-bottom:8px;}
.team-card .bio{font-size:13.5px;color:var(--text-2);}

/* ============== CTA BANNER ============== */
.cta-banner{background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:#fff;padding:60px 0;text-align:center;position:relative;overflow:hidden;}
.cta-banner::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 50%,rgba(255,255,255,.15) 0,transparent 50%);}
.cta-banner .container{position:relative;z-index:2;}
.cta-banner h2{color:#fff;margin-bottom:14px;}
.cta-banner p{color:rgba(255,255,255,.92);font-size:17px;margin-bottom:28px;}
.cta-banner .cta-group{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}

/* ============== TRUST BAND ============== */
.trust-band{background:var(--off);padding:36px 0;border-top:1px solid var(--gray-2);border-bottom:1px solid var(--gray-2);}
.trust-band .row{display:flex;justify-content:center;gap:48px;flex-wrap:wrap;align-items:center;}
.trust-band .item{display:flex;align-items:center;gap:12px;}
.trust-band .item .ico{font-size:26px;color:var(--green);}
.trust-band .item .text .lbl{font-size:11px;color:var(--gray-1);font-family:'Prompt';letter-spacing:.05em;text-transform:uppercase;}
.trust-band .item .text .val{font-family:'Prompt';font-weight:600;color:var(--primary-darker);}

/* ============== FOOTER ============== */
.site-footer{background:var(--primary-darker);color:#cfd9e3;padding:56px 0 24px;}
.site-footer .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;margin-bottom:32px;}
@media (max-width:880px){.site-footer .footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:600px){.site-footer .footer-grid{grid-template-columns:1fr;}}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px;font-family:'Prompt';}
.site-footer p, .site-footer a{color:#a3b6c8;font-size:14px;line-height:1.7;}
.site-footer a:hover{color:var(--accent-light);}
.site-footer .footer-brand .name{font-family:'Prompt';font-weight:700;color:#fff;font-size:18px;margin-bottom:8px;}
.site-footer .footer-brand .desc{margin-bottom:14px;font-size:13.5px;}
.site-footer ul li{padding:4px 0;}
.site-footer .info-line{display:flex;gap:8px;align-items:flex-start;padding:4px 0;}
.site-footer .info-line .ico{font-size:14px;color:var(--accent-light);margin-top:3px;}
.site-footer .social{display:flex;gap:10px;margin-top:14px;}
.site-footer .social a{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.06);display:flex;align-items:center;justify-content:center;font-size:16px;color:#fff;transition:all .2s;}
.site-footer .social a:hover{background:var(--accent);color:#fff;}
.site-footer .copyright{border-top:1px solid rgba(255,255,255,.08);padding-top:20px;text-align:center;font-size:13px;color:rgba(255,255,255,.5);}

/* ============== FLOATING CONTACT ============== */
.floating-contact{position:fixed;bottom:24px;right:24px;z-index:90;display:flex;flex-direction:column;gap:10px;}
.floating-contact a{
  width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:22px;text-decoration:none;box-shadow:var(--shadow);transition:all .2s;
}
.floating-contact a:hover{transform:scale(1.08);}
.floating-contact .fc-phone{background:#10B981;}
.floating-contact .fc-line{background:#06C755;}
.floating-contact .fc-fb{background:#1877F2;}

/* ============== FORMS ============== */
.form-row{display:grid;gap:16px;}
.form-field{display:flex;flex-direction:column;gap:6px;}
.form-field label{font-family:'Prompt';font-weight:500;font-size:14px;color:var(--primary-darker);}
.form-field input, .form-field textarea, .form-field select{
  padding:12px 14px;border:1.5px solid var(--gray-2);border-radius:8px;font-size:14.5px;
  font-family:'Sarabun',sans-serif;color:var(--text);background:#fff;transition:all .15s;
}
.form-field input:focus, .form-field textarea:focus, .form-field select:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(45,143,204,.15);
}
.form-field textarea{resize:vertical;min-height:120px;}

/* ============== FILTERS ============== */
.filter-bar{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-bottom:36px;}
.filter-bar button{
  padding:8px 18px;border-radius:6px;background:var(--white);border:1.5px solid var(--gray-2);
  font-family:'Prompt';font-size:13.5px;color:var(--text);transition:all .15s;cursor:pointer;
}
.filter-bar button:hover{border-color:var(--primary);color:var(--primary);}
.filter-bar button.active{background:var(--primary);border-color:var(--primary);color:#fff;}

/* ============== ABOUT / SERVICES SPECIFIC ============== */
.about-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center;}
@media (max-width:880px){.about-grid{grid-template-columns:1fr;gap:32px;}}
.about-grid .about-img{aspect-ratio:4/3;background:linear-gradient(135deg,var(--primary-light),var(--gray-3));border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:80px;color:var(--primary);overflow:hidden;position:relative;}
.about-grid .about-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}

.vm-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:36px;}
@media (max-width:880px){.vm-grid{grid-template-columns:1fr;}}
.vm-card{background:#fff;padding:32px;border-radius:var(--radius);border-left:4px solid var(--accent);box-shadow:var(--shadow-sm);}
.vm-card .lbl{font-family:'Prompt';color:var(--accent);font-size:13px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:10px;font-weight:600;}
.vm-card h3{margin-bottom:10px;}
.vm-card p{color:var(--text-2);line-height:1.7;}

.process-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:48px;position:relative;}
@media (max-width:880px){.process-steps{grid-template-columns:repeat(2,1fr);}}
@media (max-width:500px){.process-steps{grid-template-columns:1fr;}}
.process-step{background:#fff;border-radius:var(--radius);padding:28px 20px 22px;text-align:center;position:relative;border:1px solid var(--gray-2);}
.process-step .num{position:absolute;top:-18px;left:50%;transform:translateX(-50%);width:36px;height:36px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-family:'Prompt';font-weight:700;font-size:15px;box-shadow:var(--shadow-sm);}
.process-step h4{margin-top:12px;margin-bottom:6px;font-size:15px;}
.process-step p{font-size:13px;color:var(--text-2);}

/* ============== CONTACT PAGE ============== */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:36px;}
@media (max-width:880px){.contact-grid{grid-template-columns:1fr;}}
.contact-info{background:#fff;border-radius:var(--radius);padding:32px;box-shadow:var(--shadow-sm);border:1px solid var(--gray-2);}
.contact-info h3{margin-bottom:18px;}
.contact-info .info-item{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--gray-3);}
.contact-info .info-item:last-child{border-bottom:none;}
.contact-info .info-item .ico{width:42px;height:42px;border-radius:50%;background:var(--primary-light);color:var(--primary-dark);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0;}
.contact-info .info-item .lbl{font-size:12px;color:var(--gray-1);font-family:'Prompt';text-transform:uppercase;letter-spacing:.05em;}
.contact-info .info-item .val{font-family:'Prompt';font-weight:500;color:var(--primary-darker);font-size:15px;margin-top:2px;}
.contact-info .info-item .val a{color:var(--primary-darker);}

.contact-form-card{background:#fff;border-radius:var(--radius);padding:32px;box-shadow:var(--shadow-sm);border:1px solid var(--gray-2);}
.contact-form-card h3{margin-bottom:18px;}

.map-wrap{margin-top:36px;border-radius:var(--radius);overflow:hidden;height:380px;background:var(--gray-3);border:1px solid var(--gray-2);}
.map-wrap iframe{width:100%;height:100%;border:0;}
.map-wrap .map-fallback{display:flex;align-items:center;justify-content:center;height:100%;flex-direction:column;gap:12px;text-align:center;padding:24px;color:var(--steel);}

/* ============== CREDENTIALS ============== */
.cred-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
@media (max-width:880px){.cred-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:500px){.cred-grid{grid-template-columns:1fr;}}
.cred-card{background:#fff;border:1px solid var(--gray-2);border-radius:var(--radius);padding:24px;text-align:center;}
.cred-card .ico{font-size:40px;color:var(--accent);margin-bottom:12px;}
.cred-card h4{margin-bottom:6px;}
.cred-card p{font-size:13px;color:var(--text-2);margin-bottom:14px;}

/* ============== EMPTY STATE ============== */
.empty-state{padding:48px;text-align:center;color:var(--gray-1);background:var(--off);border-radius:var(--radius);}
.empty-state .ico{font-size:48px;margin-bottom:12px;}
.empty-state p{color:var(--steel);}

/* ============== PORTFOLIO GALLERY BADGE ============== */
.portfolio-card .thumb{position:relative;}
.portfolio-card .gallery-badge{
  position:absolute;top:10px;right:10px;
  background:rgba(15,44,76,.78);color:#fff;
  padding:5px 10px;border-radius:6px;
  font-family:'Prompt';font-size:11.5px;font-weight:500;
  backdrop-filter:blur(4px);
  letter-spacing:.02em;
  box-shadow:0 2px 8px rgba(0,0,0,.2);
}

/* ============== LIGHTBOX ============== */
.lightbox{
  position:fixed;inset:0;background:rgba(8,18,30,.94);
  z-index:1000;display:none;align-items:center;justify-content:center;
  opacity:0;transition:opacity .25s;padding:24px;
}
.lightbox.open{display:flex;opacity:1;}
.lightbox .lb-stage{
  max-width:min(1100px,90vw);max-height:80vh;
  display:flex;align-items:center;justify-content:center;
}
.lightbox img{max-width:100%;max-height:80vh;border-radius:6px;box-shadow:0 20px 60px rgba(0,0,0,.6);}
.lightbox .lb-close{
  position:absolute;top:18px;right:18px;
  width:42px;height:42px;border-radius:50%;
  background:rgba(255,255,255,.1);color:#fff;border:none;
  font-size:22px;cursor:pointer;transition:background .15s;
}
.lightbox .lb-close:hover{background:rgba(255,255,255,.2);}
.lightbox .lb-nav{
  position:absolute;top:50%;transform:translateY(-50%);
  width:54px;height:54px;border-radius:50%;
  background:rgba(255,255,255,.08);color:#fff;border:none;
  font-size:30px;cursor:pointer;font-family:'Prompt';line-height:1;
  transition:all .15s;
}
.lightbox .lb-nav:hover{background:var(--accent);transform:translateY(-50%) scale(1.05);}
.lightbox .lb-prev{left:18px;}
.lightbox .lb-next{right:18px;}
.lightbox .lb-info{
  position:absolute;bottom:24px;left:50%;transform:translateX(-50%);
  text-align:center;color:#fff;max-width:90vw;
}
.lightbox .lb-title{font-family:'Prompt';font-size:18px;font-weight:600;margin-bottom:4px;}
.lightbox .lb-sub{font-family:'Prompt';font-size:12.5px;color:rgba(255,255,255,.7);margin-bottom:8px;}
.lightbox .lb-counter{
  display:inline-block;background:rgba(255,255,255,.1);
  padding:4px 12px;border-radius:12px;font-family:'Prompt';font-size:12px;
}
@media (max-width:600px){
  .lightbox .lb-nav{width:42px;height:42px;font-size:24px;}
  .lightbox .lb-prev{left:6px;}
  .lightbox .lb-next{right:6px;}
  .lightbox .lb-close{top:10px;right:10px;}
}

/* ============== HERO SLIDESHOW ============== */
.hero.hero-slideshow{padding:0;min-height:560px;position:relative;overflow:hidden;background:var(--primary-darker);}
.hero.hero-slideshow .slides{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;}
.hero.hero-slideshow .slide{
  position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;
  background-size:cover;background-position:center;background-repeat:no-repeat;
  opacity:0;visibility:hidden;
  transition:opacity 1s ease-in-out, transform 8s ease-out;
  display:flex;align-items:center;
}
.hero.hero-slideshow .slide.active{opacity:1;visibility:visible;transform:scale(1.05);z-index:1;}
.hero.hero-slideshow .slide::after{
  content:"";position:absolute;top:0;right:0;bottom:0;left:0;
  background:linear-gradient(135deg,rgba(19,77,113,.78) 0%,rgba(26,95,140,.5) 50%,rgba(15,40,60,.6) 100%);
  z-index:1;
}
.hero.hero-slideshow .slide .container{position:relative;z-index:2;color:#fff;padding:60px 24px;}
.hero.hero-slideshow .slide h1{color:#fff;margin-bottom:18px;}
.hero.hero-slideshow .slide .lead{color:rgba(255,255,255,.92);font-size:clamp(15px,1.6vw,18px);}
.hero.hero-slideshow .slide .cta-group{margin-top:24px;}

.slide-arrow{
  position:absolute;top:50%;transform:translateY(-50%);
  width:48px;height:48px;border-radius:50%;
  background:rgba(255,255,255,.18);color:#fff;border:none;
  font-size:28px;line-height:1;font-family:'Prompt';cursor:pointer;
  z-index:5;backdrop-filter:blur(4px);transition:all .15s;
}
.slide-arrow:hover{background:var(--accent);transform:translateY(-50%) scale(1.08);}
.slide-arrow.prev{left:24px;}
.slide-arrow.next{right:24px;}

.slide-dots{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);z-index:5;display:flex;gap:8px;}
.slide-dots button{
  width:10px;height:10px;border-radius:50%;border:none;
  background:rgba(255,255,255,.4);cursor:pointer;transition:all .2s;padding:0;
}
.slide-dots button.active{background:var(--accent);width:30px;border-radius:5px;}

@media (max-width:600px){
  .slide-arrow{width:40px;height:40px;font-size:22px;}
  .slide-arrow.prev{left:10px;}
  .slide-arrow.next{right:10px;}
  .hero.hero-slideshow{min-height:480px;}
}

/* page-hero with bg image */
.page-hero.has-image{background-size:cover;background-position:center;}
.page-hero.has-image::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(19,77,113,.85),rgba(26,95,140,.7));
  z-index:1;
}
.page-hero.has-image .container{position:relative;z-index:2;}

/* ============== REVEAL ON SCROLL ============== */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s ease-out, transform .7s ease-out;}
.reveal.shown{opacity:1;transform:translateY(0);}

/* ============== CARD HOVER OVERLAY ============== */
.portfolio-card .card-overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 30%,rgba(15,40,60,.85) 100%);
  display:flex;align-items:flex-end;justify-content:center;padding:18px;
  opacity:0;transition:opacity .25s;pointer-events:none;
}
.portfolio-card .card-overlay span{
  background:var(--accent);color:#fff;padding:8px 16px;border-radius:6px;
  font-family:'Prompt';font-weight:500;font-size:13px;
  transform:translateY(10px);transition:transform .25s;
}
.portfolio-card:hover .card-overlay{opacity:1;}
.portfolio-card:hover .card-overlay span{transform:translateY(0);}
.portfolio-card .thumb img{transition:transform .5s;}
.portfolio-card:hover .thumb img{transform:scale(1.08);}

/* BA badge variant */
.portfolio-card .gallery-badge.ba{
  background:linear-gradient(90deg,var(--accent),var(--accent-dark));
  font-weight:600;
}

/* ============== BEFORE/AFTER SLIDER (in lightbox) ============== */
.ba-slider{
  position:relative;width:min(1100px,90vw);max-width:1100px;
  user-select:none;border-radius:6px;overflow:hidden;
  box-shadow:0 20px 60px rgba(0,0,0,.6);background:#000;
  aspect-ratio:16/9;max-height:80vh;
}
.ba-slider img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;display:block;}
.ba-slider .ba-after{z-index:1;}
.ba-slider .ba-before-wrap{position:absolute;top:0;left:0;height:100%;width:50%;overflow:hidden;z-index:2;}
.ba-slider .ba-before-wrap .ba-before{
  position:absolute;top:0;left:0;width:auto;
  min-width:calc(100% / 0.5);  /* trick: keep aspect of full image visible at any width */
  height:100%;object-fit:cover;
}
.ba-slider .ba-handle{
  position:absolute;top:0;left:50%;width:4px;height:100%;
  background:#fff;z-index:3;cursor:ew-resize;transform:translateX(-50%);
  box-shadow:0 0 12px rgba(0,0,0,.5);
}
.ba-slider .ba-handle-line{display:none;}
.ba-slider .ba-handle-knob{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:44px;height:44px;border-radius:50%;background:#fff;color:var(--primary-dark);
  display:flex;align-items:center;justify-content:center;font-size:18px;
  cursor:ew-resize;box-shadow:0 4px 14px rgba(0,0,0,.4);font-weight:700;
}
.ba-slider .ba-label{
  position:absolute;top:14px;background:rgba(0,0,0,.6);color:#fff;
  padding:5px 14px;border-radius:4px;font-family:'Prompt';font-size:13px;z-index:4;
}
.ba-slider .ba-label-before{left:14px;}
.ba-slider .ba-label-after{right:14px;}

/* Fix before-wrap to keep image consistent — use a different technique */
.ba-slider .ba-before-wrap{display:flex;align-items:stretch;}
.ba-slider .ba-before-wrap .ba-before{
  width:auto;height:100%;min-width:initial;
  flex:0 0 auto;
}
/* Use clip-path approach instead — simpler and works perfectly */
.ba-slider{position:relative;}
.ba-slider .ba-before-wrap{
  width:100%;clip-path:inset(0 50% 0 0);
  transition:none;
}

/* ============== CREDENTIALS WITH IMAGE ============== */
.cred-card.has-image{padding:0;overflow:hidden;}
.cred-card.has-image .cred-image{
  display:block;aspect-ratio:4/3;background:var(--gray-3);
  position:relative;overflow:hidden;
}
.cred-card.has-image .cred-image img{
  width:100%;height:100%;object-fit:cover;transition:transform .4s;
}
.cred-card.has-image .cred-image:hover img{transform:scale(1.05);}
.cred-card.has-image .cred-image .zoom{
  position:absolute;inset:auto auto 10px 10px;
  background:rgba(15,40,60,.78);color:#fff;
  padding:4px 10px;border-radius:4px;font-family:'Prompt';font-size:11px;
}
.cred-card.has-image h4{padding:14px 18px 4px;}
.cred-card.has-image p{padding:0 18px 18px;}

/* ============== ABOUT IMG WITH UPLOAD ============== */
.about-grid .about-img{position:relative;}
.about-grid .about-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:var(--radius);}

/* ============== PORTFOLIO GALLERY BADGE ============== */
.portfolio-card .thumb{position:relative;}
.portfolio-card .gallery-badge{
  position:absolute;top:10px;right:10px;
  background:rgba(15,44,76,.78);color:#fff;
  padding:5px 10px;border-radius:6px;
  font-family:'Prompt';font-size:11.5px;font-weight:500;
  backdrop-filter:blur(4px);
  letter-spacing:.02em;
  box-shadow:0 2px 8px rgba(0,0,0,.2);
  z-index:2;
}

/* ============== LIGHTBOX ============== */
.lightbox{
  position:fixed;inset:0;background:rgba(8,18,30,.94);
  z-index:1000;display:none;align-items:center;justify-content:center;
  opacity:0;transition:opacity .25s;padding:24px;
}
.lightbox.open{display:flex;opacity:1;}
.lightbox .lb-stage{
  max-width:min(1100px,90vw);max-height:80vh;
  display:flex;align-items:center;justify-content:center;
}
.lightbox .lb-stage img{max-width:100%;max-height:80vh;border-radius:6px;box-shadow:0 20px 60px rgba(0,0,0,.6);}
.lightbox .lb-close{
  position:absolute;top:18px;right:18px;
  width:42px;height:42px;border-radius:50%;
  background:rgba(255,255,255,.1);color:#fff;border:none;
  font-size:22px;cursor:pointer;transition:background .15s;z-index:10;
}
.lightbox .lb-close:hover{background:rgba(255,255,255,.2);}
.lightbox .lb-nav{
  position:absolute;top:50%;transform:translateY(-50%);
  width:54px;height:54px;border-radius:50%;
  background:rgba(255,255,255,.08);color:#fff;border:none;
  font-size:30px;cursor:pointer;font-family:'Prompt';line-height:1;
  transition:all .15s;z-index:10;
}
.lightbox .lb-nav:hover{background:var(--accent);transform:translateY(-50%) scale(1.05);}
.lightbox .lb-prev{left:18px;}
.lightbox .lb-next{right:18px;}
.lightbox .lb-info{
  position:absolute;bottom:24px;left:50%;transform:translateX(-50%);
  text-align:center;color:#fff;max-width:90vw;
}
.lightbox .lb-title{font-family:'Prompt';font-size:18px;font-weight:600;margin-bottom:4px;}
.lightbox .lb-sub{font-family:'Prompt';font-size:12.5px;color:rgba(255,255,255,.7);margin-bottom:8px;}
.lightbox .lb-counter{
  display:inline-block;background:rgba(255,255,255,.1);
  padding:4px 12px;border-radius:12px;font-family:'Prompt';font-size:12px;
}
@media (max-width:600px){
  .lightbox .lb-nav{width:42px;height:42px;font-size:24px;}
  .lightbox .lb-prev{left:6px;}
  .lightbox .lb-next{right:6px;}
  .lightbox .lb-close{top:10px;right:10px;}
  .ba-slider .ba-handle-knob{width:36px;height:36px;font-size:14px;}
}

/* ============== UTILITY ============== */
.text-center{text-align:center;}
.mt-4{margin-top:48px;}

/* ============== HERO SLIDESHOW — FORCE STACK FIX ==============
   ป้องกัน slides เรียงเป็นแถว/คอลัมน์ (hamburger) บน browser ที่ override
   ใช้ !important เพื่อ guarantee การซ้อนทับ
   ============================================================ */
section.hero.hero-slideshow{position:relative !important;overflow:hidden !important;min-height:560px !important;}
section.hero.hero-slideshow > .slides{
  position:absolute !important;
  top:0 !important;right:0 !important;bottom:0 !important;left:0 !important;
  width:100% !important;height:100% !important;
  display:block !important;
}
section.hero.hero-slideshow > .slides > .slide{
  position:absolute !important;
  top:0 !important;right:0 !important;bottom:0 !important;left:0 !important;
  width:100% !important;height:100% !important;
  opacity:0;visibility:hidden;
  background-size:cover !important;background-position:center !important;background-repeat:no-repeat !important;
  transition:opacity 1s ease-in-out, transform 8s ease-out;
}
section.hero.hero-slideshow > .slides > .slide.active{
  opacity:1 !important;visibility:visible !important;z-index:1;
  transform:scale(1.05);
}