/* ========================
   CSS Variables
   ======================== */
:root {
  --blue-dark:    #003366;
  --blue-mid:     #0052A3;
  --blue-light:   #0066CC;
  --yellow:       #FFB90F;
  --yellow-light: #FFA500;
  --red:          #E63946;
  --text-dark:    #333333;
  --text-mid:     #666666;
  --text-light:   #999999;
  --bg-white:     #FFFFFF;
  --bg-pale:      #F0F4F8;
  --bg-paler:     #F8FAFC;
  --border:       #E0E8F0;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --sp-xs:8px; --sp-sm:16px; --sp-md:24px; --sp-lg:40px; --sp-xl:60px; --sp-xxl:80px;
  --max-w:1200px; --radius:8px;
  --shadow:0 4px 20px rgba(0,51,102,0.10);
  --shadow-hover:0 8px 32px rgba(0,51,102,0.18);
  --transition:0.3s ease;
}

/* ========================
   Reset & Base
   ======================== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:var(--font);font-size:18px;line-height:1.75;color:var(--text-dark);background:var(--bg-white);overflow-x:hidden;}
img{max-width:100%;height:auto;display:block;}
a{text-decoration:none;color:inherit;}
ul{list-style:none;}
button{cursor:pointer;border:none;background:none;font-family:var(--font);}
.container{max-width:var(--max-w);margin:0 auto;padding:0 20px;}

.section-label{display:inline-block;font-size:14px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--yellow-light);margin-bottom:var(--sp-sm);}
.section-title{font-size:42px;font-weight:800;line-height:1.25;color:var(--blue-dark);margin-bottom:var(--sp-sm);}
.section-desc{font-size:19px;color:var(--text-mid);max-width:640px;line-height:1.8;}
.section-header{margin-bottom:var(--sp-lg);}
.section-header.center{text-align:center;}
.section-header.center .section-desc{margin:0 auto;}

/* ========================
   Header
   ======================== */
#header{position:fixed;top:0;left:0;right:0;z-index:1000;background:#fff;border-bottom:2px solid var(--blue-dark);box-shadow:0 2px 12px rgba(0,51,102,0.10);transition:box-shadow var(--transition);}
#header.scrolled{box-shadow:0 4px 20px rgba(0,51,102,0.15);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;}
.logo-link{display:flex;align-items:center;flex-shrink:0;}
.logo-link img{height:44px;width:auto;object-fit:contain;}
.nav-desktop{display:flex;align-items:center;gap:4px;}
.nav-desktop a{display:block;padding:8px 14px;font-size:16px;font-weight:600;color:var(--blue-dark);border-radius:6px;white-space:nowrap;transition:color var(--transition),background var(--transition);}
.nav-desktop a:hover,.nav-desktop a.active{color:var(--blue-light);background:rgba(0,102,204,0.08);}
.nav-cta{display:flex;align-items:center;flex-shrink:0;}
.btn-quote{padding:9px 22px;background:var(--yellow);color:var(--blue-dark);font-size:14px;font-weight:700;border-radius:6px;white-space:nowrap;transition:background var(--transition),transform var(--transition);}
.btn-quote:hover{background:var(--yellow-light);transform:translateY(-1px);}
#menuToggle{display:none;flex-direction:column;justify-content:center;align-items:center;width:40px;height:40px;gap:5px;border-radius:6px;transition:background var(--transition);}
#menuToggle:hover{background:rgba(0,51,102,0.08);}
#menuToggle span{display:block;width:22px;height:2px;background:var(--blue-dark);border-radius:2px;transition:transform var(--transition),opacity var(--transition);}
#menuToggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
#menuToggle.open span:nth-child(2){opacity:0;}
#menuToggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
#navDrawer{display:none;position:fixed;top:72px;left:0;right:0;background:var(--blue-dark);border-bottom:2px solid var(--yellow);padding:var(--sp-md) 20px;z-index:999;transform:translateY(-10px);opacity:0;transition:transform var(--transition),opacity var(--transition);}
#navDrawer.open{transform:translateY(0);opacity:1;}
#navDrawer a{display:block;padding:12px 0;font-size:16px;font-weight:600;color:rgba(255,255,255,0.85);border-bottom:1px solid rgba(255,255,255,0.08);transition:color var(--transition);}
#navDrawer a:last-child{border-bottom:none;}
#navDrawer a:hover{color:var(--yellow);}

/* ========================
   Page Banner
   ======================== */
#page-banner{position:relative;height:380px;margin-top:72px;overflow:hidden;display:flex;align-items:center;}
.page-banner-bg{position:absolute;inset:0;}
.page-banner-bg img{width:100%;height:100%;object-fit:cover;object-position:center 40%;}
.page-banner-overlay{position:absolute;inset:0;background:linear-gradient(105deg,rgba(0,31,63,0.90) 0%,rgba(0,51,102,0.68) 60%,rgba(0,82,163,0.42) 100%);}
.page-banner-content{position:relative;z-index:2;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,0.65);margin-bottom:var(--sp-sm);flex-wrap:wrap;}
.breadcrumb a{color:rgba(255,255,255,0.65);transition:color var(--transition);}
.breadcrumb a:hover{color:var(--yellow);}
.breadcrumb i{font-size:10px;color:rgba(255,255,255,0.4);}
.breadcrumb span{color:var(--yellow);font-weight:600;}
.page-banner-title{font-size:52px;font-weight:900;color:#fff;line-height:1.15;margin-bottom:var(--sp-sm);}
.page-banner-title span{color:var(--yellow);}
.page-banner-desc{font-size:18px;color:rgba(255,255,255,0.78);max-width:620px;}

/* ========================
   Stats Bar
   ======================== */
#stats-bar{background:var(--blue-dark);padding:var(--sp-md) 0;}
.stats-bar-inner{display:flex;align-items:center;justify-content:space-around;gap:var(--sp-md);flex-wrap:wrap;}
.stats-bar-item{display:flex;align-items:center;gap:12px;color:#fff;}
.stats-bar-item > i{font-size:24px;color:var(--yellow);}
.stats-bar-num{font-size:28px;font-weight:900;color:var(--yellow);line-height:1;}
.stats-bar-label{font-size:13px;color:rgba(255,255,255,0.70);line-height:1.4;}

/* ========================
   Filter Bar
   ======================== */
#filter-bar{background:var(--bg-white);border-bottom:1px solid var(--border);position:sticky;top:72px;z-index:100;box-shadow:0 2px 8px rgba(0,51,102,0.06);}
.filter-inner{display:flex;align-items:center;gap:var(--sp-sm);padding:14px 0;flex-wrap:wrap;}
.filter-label{font-size:14px;font-weight:700;color:var(--text-mid);margin-right:var(--sp-xs);white-space:nowrap;}
.filter-tabs{display:flex;gap:8px;flex-wrap:wrap;}
.filter-tab{padding:8px 20px;font-size:14px;font-weight:600;color:var(--text-mid);background:var(--bg-pale);border:2px solid transparent;border-radius:30px;cursor:pointer;white-space:nowrap;transition:all var(--transition);}
.filter-tab:hover{color:var(--blue-dark);border-color:var(--blue-dark);background:rgba(0,51,102,0.06);}
.filter-tab.active{color:#fff;background:var(--blue-dark);border-color:var(--blue-dark);}
.filter-count{margin-left:auto;font-size:14px;color:var(--text-mid);white-space:nowrap;}
.filter-count strong{color:var(--blue-dark);}

/* ========================
   Videos Grid
   ======================== */
#videos-list{padding:var(--sp-xl) 0;background:var(--bg-pale);}
.videos-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--sp-md);}

/* ========================
   Video Card
   ======================== */
.vid-card{background:var(--bg-white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform var(--transition),box-shadow var(--transition);}
.vid-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.vid-card.hidden{display:none;}

/* Featured card */
.vid-card.featured .vid-card-title{font-size:20px;}

/* Thumbnail */
.vid-card-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#000;flex-shrink:0;}
.vid-card.featured .vid-card-thumb{aspect-ratio:16/7;}
.vid-card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease,opacity var(--transition);}
.vid-card:hover .vid-card-thumb img{transform:scale(1.05);opacity:0.85;}
.vid-thumb-overlay{position:absolute;inset:0;background:linear-gradient(0deg,rgba(0,20,50,0.7) 0%,transparent 50%);}

/* Play button */
.vid-play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:64px;height:64px;background:rgba(255,185,15,0.92);color:var(--blue-dark);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;border:none;cursor:pointer;transition:transform var(--transition),background var(--transition),box-shadow var(--transition);box-shadow:0 4px 20px rgba(0,0,0,0.4);}
.vid-play-btn:hover{background:var(--yellow);transform:translate(-50%,-50%) scale(1.12);box-shadow:0 8px 32px rgba(0,0,0,0.5);}
.vid-play-btn i{margin-left:4px;}

/* Duration badge */
.vid-duration{position:absolute;bottom:12px;right:12px;background:rgba(0,20,50,0.80);color:#fff;font-size:12px;font-weight:700;padding:4px 10px;border-radius:4px;display:flex;align-items:center;gap:5px;}
.vid-duration i{font-size:11px;color:var(--yellow);}

/* Category badge */
.vid-cat-badge{position:absolute;top:12px;left:12px;padding:4px 12px;font-size:12px;font-weight:800;border-radius:20px;text-transform:uppercase;letter-spacing:0.5px;}
.vid-cat-badge.construction{background:var(--blue-dark);color:#fff;}
.vid-cat-badge.demo{background:var(--yellow);color:var(--blue-dark);}
.vid-cat-badge.comparison{background:#E63946;color:#fff;}
.vid-cat-badge.review{background:#25D366;color:#fff;}

/* Featured label */
.vid-featured-label{position:absolute;bottom:12px;left:12px;display:flex;align-items:center;gap:6px;padding:6px 14px;background:var(--yellow);color:var(--blue-dark);font-size:12px;font-weight:800;border-radius:4px;text-transform:uppercase;letter-spacing:0.5px;}

/* Card body */
.vid-card-body{padding:var(--sp-md);flex:1;display:flex;flex-direction:column;gap:10px;}
.vid-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.vid-location{font-size:13px;color:var(--text-mid);font-weight:600;display:flex;align-items:center;gap:5px;}
.vid-location i{color:var(--blue-light);font-size:12px;}
.vid-model-chip{padding:3px 12px;background:var(--blue-dark);color:#fff;font-size:12px;font-weight:800;border-radius:20px;}
.vid-card-title{font-size:16px;font-weight:800;color:var(--blue-dark);line-height:1.35;}
.vid-desc{font-size:14px;color:var(--text-mid);line-height:1.65;flex:1;}
.vid-tags{display:flex;gap:6px;flex-wrap:wrap;}
.vid-tag{padding:3px 10px;background:var(--bg-pale);color:var(--blue-mid);font-size:12px;font-weight:600;border-radius:4px;}

/* Card footer */
.vid-card-footer{padding:0 var(--sp-md) var(--sp-md);display:flex;gap:10px;}
.btn-watch{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;padding:11px;background:var(--blue-dark);color:#fff;font-size:14px;font-weight:700;border-radius:6px;width:auto;transition:background var(--transition),transform var(--transition);cursor:pointer;border:none;}
.btn-watch:hover{background:var(--blue-light);transform:translateY(-1px);}
.btn-details{display:flex;align-items:center;justify-content:center;gap:6px;padding:11px 16px;background:transparent;color:var(--blue-dark);font-size:14px;font-weight:700;border:2px solid var(--border);border-radius:6px;transition:all var(--transition);white-space:nowrap;}
.btn-details:hover{border-color:var(--blue-dark);background:rgba(0,51,102,0.06);}

/* ========================
   Video Modal
   ======================== */
#vid-modal{display:none;position:fixed;inset:0;z-index:2000;align-items:center;justify-content:center;padding:20px;}
#vid-modal.open{display:flex;}
.modal-backdrop{position:absolute;inset:0;background:rgba(0,10,30,0.85);backdrop-filter:blur(4px);}
.modal-box{position:relative;z-index:1;background:var(--blue-dark);border-radius:12px;width:100%;max-width:900px;overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,0.5);}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid rgba(255,255,255,0.12);}
.modal-title{font-size:16px;font-weight:700;color:#fff;line-height:1.35;flex:1;padding-right:16px;}
.modal-close{width:36px;height:36px;border-radius:6px;background:rgba(255,255,255,0.12);color:#fff;font-size:18px;display:flex;align-items:center;justify-content:center;border:none;cursor:pointer;flex-shrink:0;transition:background var(--transition);}
.modal-close:hover{background:rgba(255,255,255,0.22);}
.modal-video-wrap{position:relative;padding-bottom:56.25%;height:0;}
.modal-video-wrap iframe{position:absolute;top:0;left:0;width:100%;height:100%;}
.modal-footer{padding:12px 20px;border-top:1px solid rgba(255,255,255,0.08);}
.modal-note{font-size:13px;color:rgba(255,255,255,0.6);}
.modal-note i{color:var(--yellow);margin-right:4px;}
.modal-note a{color:var(--yellow);font-weight:600;}
.modal-note a:hover{text-decoration:underline;}

/* ========================
   Pagination
   ======================== */
.pagination{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:var(--sp-lg);flex-wrap:wrap;}
.pagination-btn{min-width:42px;height:42px;display:flex;align-items:center;justify-content:center;padding:0 12px;font-size:15px;font-weight:700;color:var(--blue-dark);background:var(--bg-white);border:2px solid var(--border);border-radius:6px;cursor:pointer;transition:all var(--transition);font-family:var(--font);}
.pagination-btn:hover{border-color:var(--blue-dark);background:rgba(0,51,102,0.06);color:var(--blue-dark);}
.pagination-btn.active{background:var(--blue-dark);color:#fff;border-color:var(--blue-dark);}
.pagination-btn.disabled{opacity:0.4;cursor:not-allowed;pointer-events:none;}
.pagination-btn i{font-size:14px;}
.pagination-info{font-size:14px;color:var(--text-mid);font-weight:600;margin-left:var(--sp-sm);}
#pageNumbers{display:flex;gap:8px;}

/* ========================
   CTA
   ======================== */
#cta{padding:var(--sp-xl) 0;position:relative;overflow:hidden;}
.cta-bg{position:absolute;inset:0;z-index:0;}
.cta-bg img{width:100%;height:100%;object-fit:cover;}
.cta-overlay{position:absolute;inset:0;z-index:1;background:linear-gradient(135deg,rgba(0,31,63,0.96) 0%,rgba(0,51,102,0.90) 100%);}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:760px;margin:0 auto;}
.cta-inner .section-label{color:var(--yellow);}
.cta-inner .section-title{color:#fff;font-size:40px;}
.cta-inner .section-desc{color:rgba(255,255,255,0.78);margin:0 auto var(--sp-lg);}
.cta-actions{display:flex;gap:var(--sp-md);justify-content:center;flex-wrap:wrap;margin-bottom:var(--sp-lg);}
.btn-whatsapp{display:inline-flex;align-items:center;gap:10px;padding:14px 28px;background:#25D366;color:#fff;font-size:15px;font-weight:700;border-radius:var(--radius);transition:background var(--transition),transform var(--transition);}
.btn-whatsapp:hover{background:#20be5b;transform:translateY(-2px);}
.btn-email{display:inline-flex;align-items:center;gap:10px;padding:14px 28px;background:transparent;color:#fff;font-size:15px;font-weight:700;border:2px solid rgba(255,255,255,0.5);border-radius:var(--radius);transition:all var(--transition);}
.btn-email:hover{border-color:#fff;background:rgba(255,255,255,0.08);transform:translateY(-2px);}
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;background:var(--yellow);color:var(--blue-dark);font-size:15px;font-weight:700;border-radius:var(--radius);transition:background var(--transition),transform var(--transition);}
.btn-primary:hover{background:var(--yellow-light);transform:translateY(-2px);}
.cta-trust{display:flex;gap:var(--sp-lg);justify-content:center;flex-wrap:wrap;}
.trust-item{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,0.70);}
.trust-item i{color:var(--yellow);font-size:16px;}

/* ========================
   Footer
   ======================== */
#footer{background:linear-gradient(135deg,#e3f2fd 0%,#bbdefb 50%,#90caf9 100%);padding:var(--sp-xl) 0 var(--sp-md);}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:var(--sp-xl);padding-bottom:var(--sp-xl);border-bottom:1px solid rgba(0,51,102,0.15);}
.footer-brand img{height:40px;width:auto;margin-bottom:var(--sp-md);}
.footer-brand p{font-size:14px;font-weight:700;color:#000;line-height:1.75;margin-bottom:var(--sp-md);}
.footer-social{display:flex;gap:var(--sp-xs);}
.social-btn{width:36px;height:36px;background:rgba(0,51,102,0.10);border-radius:6px;display:flex;align-items:center;justify-content:center;color:var(--blue-dark);font-size:15px;transition:background var(--transition),color var(--transition);}
.social-btn:hover{background:var(--blue-dark);color:var(--yellow);}
.footer-col h4{font-size:14px;font-weight:700;color:#000;margin-bottom:var(--sp-md);letter-spacing:0.5px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul li a{font-size:14px;font-weight:700;color:#000;display:flex;align-items:center;gap:6px;transition:color var(--transition);}
.footer-col ul li a:hover{color:var(--blue-light);}
.footer-col ul li a i{font-size:12px;width:14px;color:var(--blue-light);}
.footer-contact li{display:flex;gap:10px;font-size:14px;font-weight:700;color:#000;line-height:1.6;margin-bottom:12px;}
.footer-contact li i{color:var(--blue-light);margin-top:3px;flex-shrink:0;width:14px;}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:var(--sp-md);flex-wrap:wrap;gap:var(--sp-sm);}
.footer-bottom p{font-size:13px;font-weight:700;color:#000;}
.footer-bottom a{color:#000;font-weight:700;transition:color var(--transition);}
.footer-bottom a:hover{color:var(--blue-dark);}

/* Scroll Top */
#scrollTop{position:fixed;bottom:28px;right:28px;width:44px;height:44px;background:var(--yellow);color:var(--blue-dark);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;box-shadow:0 4px 16px rgba(0,0,0,0.2);cursor:pointer;z-index:500;opacity:0;transform:translateY(10px);pointer-events:none;transition:opacity var(--transition),transform var(--transition),background var(--transition);}
#scrollTop.visible{opacity:1;transform:translateY(0);pointer-events:all;}
#scrollTop:hover{background:var(--yellow-light);}

/* Reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity 0.6s ease,transform 0.6s ease;}
.reveal.visible{opacity:1;transform:translateY(0);}

/* ========================
   Responsive — Tablet ≤1024px
   ======================== */
@media(max-width:1024px){
  .section-title{font-size:36px;}
  .page-banner-title{font-size:40px;}
  .videos-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--sp-lg);}
  .nav-desktop{display:none;}
  .nav-cta{display:none;}
  #menuToggle{display:flex;}
  #navDrawer{display:block;}
  .cta-inner .section-title{font-size:34px;}
  .stats-bar-inner{justify-content:center;gap:var(--sp-lg);}
  .modal-box{max-width:700px;}
}

/* ========================
   Responsive — Mobile ≤640px
   ======================== */
@media(max-width:640px){
  .container{padding:0 16px;}
  body{font-size:17px;}
  .section-title{font-size:28px;}
  #page-banner{height:260px;}
  .page-banner-title{font-size:28px;}
  .page-banner-desc{font-size:15px;}
  .videos-grid{grid-template-columns:1fr;}
  .vid-card.featured .vid-card-thumb{aspect-ratio:16/9;}
  .vid-card.featured .vid-card-title{font-size:16px;}
  .footer-grid{grid-template-columns:1fr;gap:var(--sp-lg);}
  .footer-bottom{flex-direction:column;text-align:center;}
  .cta-actions{flex-direction:column;align-items:center;}
  .cta-inner .section-title{font-size:26px;}
  .filter-count{width:100%;}
  .stats-bar-inner{gap:var(--sp-md);}
  .vid-card-footer{flex-direction:column;}
  .modal-box{max-width:100%;border-radius:8px;}
  .modal-title{font-size:14px;}
  #vid-modal{padding:12px;}
}