/* ===== Basitao - Tridge-Inspired Design ===== */

/* Reset */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',sans-serif;color:#20262C;line-height:1.6;background:#fff;font-size:14px}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%;display:block}

/* ===== CSS Variables (Tridge Palette) ===== */
:root{
  --primary:#171CFD;
  --primary-hover:#0F14D4;
  --primary-light:rgba(23,28,253,0.08);
  --primary-border:rgba(23,28,253,0.3);
  --navy:#0A0568;
  --navy-light:#1a1080;
  --green:#08B54F;
  --green-light:#CEF0DC;
  --surface0:#FFFFFF;
  --surface1:#F9FAFA;
  --surface2:#F4F5F6;
  --text-primary:#20262C;
  --text-secondary:#697786;
  --text-muted:#98A3AE;
  --border:#E5E8EB;
  --border-light:#F4F5F6;
  --white:#FFFFFF;
  --max-width:1200px;
  --side-padding:8%;
  --transition:all 0.2s ease;
  --radius:8px;
  --radius-sm:4px;
  --radius-pill:100px;
  --shadow-sm:0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg:0 12px 32px rgba(0,0,0,0.12);
}

/* ===== Utility ===== */
.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}
.container-wide{width:100%;padding-left:var(--side-padding);padding-right:var(--side-padding)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:var(--radius-sm);font-weight:600;font-size:14px;cursor:pointer;transition:var(--transition);border:none;letter-spacing:0.3px}
.btn-primary{background:var(--primary);color:var(--white)}
.btn-primary:hover{background:var(--primary-hover);box-shadow:var(--shadow-md)}
.btn-outline{border:2px solid var(--primary-border);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--primary-light);border-color:var(--primary)}
.btn-dark{background:var(--text-primary);color:var(--white);letter-spacing:2px;text-transform:uppercase;padding:12px 28px}
.btn-dark:hover{background:#32343A}
.btn-navy{background:var(--navy);color:var(--white)}
.btn-navy:hover{background:var(--navy-light)}
.btn-ghost{background:transparent;color:var(--primary);padding:8px 16px}
.btn-ghost:hover{background:var(--primary-light)}

/* Section titles */
.section-title{text-align:center;margin-bottom:48px}
.section-title h2{font-size:32px;font-weight:700;color:#202146;margin-bottom:12px;letter-spacing:-0.7px;line-height:1.25}
.section-title p{color:var(--text-secondary);max-width:600px;margin:0 auto;font-size:16px;line-height:1.7}
.section-title .underline{width:48px;height:3px;background:var(--primary);margin:16px auto 0;border-radius:2px}

/* Tags */
.tag{display:inline-block;color:var(--text-secondary);background:var(--surface2);border-radius:var(--radius-sm);padding:4px 10px;font-size:12px;font-weight:500;transition:var(--transition)}
.tag:hover{background:#EFF1F3}
.tag-primary{background:var(--primary-light);color:var(--primary)}
.tag-green{background:var(--green-light);color:#1A5F10}

/* ===== Header / Nav ===== */
header{background:var(--white);position:sticky;top:0;z-index:1000;border-bottom:1px solid var(--border)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:62px;padding:0 var(--side-padding)}
.logo{display:flex;align-items:center;gap:10px}
.logo-icon{width:36px;height:36px;background:var(--primary);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--white);font-size:13px}
.logo-text{font-size:16px;font-weight:700;color:var(--text-primary);line-height:1.2}
.logo-text span{display:block;font-size:11px;font-weight:400;color:var(--text-secondary);letter-spacing:0.5px}
nav ul{display:flex;align-items:center;gap:0}
nav ul li{position:relative}
nav ul li a{color:#111;padding:8px 14px;font-size:14px;font-weight:400;display:flex;align-items:center;height:50px;border-radius:0;transition:var(--transition)}
nav ul li a:hover{color:var(--primary)}
nav ul li a.active{color:var(--primary);box-shadow:inset 0 -2px 0 0 var(--primary)}
.nav-cta{background:var(--primary)!important;color:var(--white)!important;padding:8px 18px!important;border-radius:var(--radius-sm)!important;height:auto!important;font-weight:500!important;margin-left:8px}
.nav-cta:hover{background:var(--primary-hover)!important}

/* Dropdown */
.dropdown-menu{display:none;position:absolute;top:100%;left:0;background:var(--white);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);min-width:200px;padding:8px 0;z-index:100}
nav ul li:hover .dropdown-menu{display:block}
.dropdown-menu a{display:block;padding:10px 16px;font-size:13px;color:var(--text-primary);transition:var(--transition)}
.dropdown-menu a:hover{background:var(--surface1);color:var(--primary)}

/* Language switcher */
.lang-switcher{display:flex;gap:4px;margin-left:16px}
.lang-switcher a{padding:5px 10px;font-size:12px;border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-secondary);font-weight:500}
.lang-switcher a:hover{border-color:var(--primary);color:var(--primary)}
.lang-switcher a.active{background:var(--primary);color:var(--white);border-color:var(--primary)}

/* Hamburger */
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.hamburger span{width:22px;height:2px;background:var(--text-primary);transition:var(--transition)}
.hamburger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* ===== Hero ===== */
.hero{padding:100px 0 80px;background:linear-gradient(135deg,#F8F9FF 0%,#FFFFFF 50%,#F0F1FF 100%);position:relative;overflow:hidden}
.hero .container{max-width:var(--max-width);margin:0 auto;padding:0 20px}
.hero h1{font-size:44px;font-weight:700;color:var(--text-primary);line-height:1.2;letter-spacing:-1.2px;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero p{font-size:18px;color:var(--text-secondary);max-width:600px;line-height:1.7;margin-bottom:32px}
.hero-btns{display:flex;gap:12px;margin-bottom:48px}
.hero-stats{display:flex;gap:48px}
.hero-stats .stat{text-align:left}
.hero-stats .stat h3{font-size:28px;font-weight:700;color:var(--primary);letter-spacing:-0.5px}
.hero-stats .stat p{font-size:13px;color:var(--text-secondary);margin:0}

/* ===== Page Header (for subpages) ===== */
.page-header{background:linear-gradient(135deg,var(--navy) 0%,#1a1080 100%);color:var(--white);padding:48px 0;text-align:center}
.page-header h1{font-size:32px;font-weight:700;letter-spacing:-0.7px;margin-bottom:8px}
.page-header p{color:rgba(255,255,255,0.7);font-size:16px}
.breadcrumb{font-size:13px;color:rgba(255,255,255,0.5);margin-top:8px}
.breadcrumb a{color:rgba(255,255,255,0.7)}
.breadcrumb a:hover{color:var(--white)}

/* ===== Sections ===== */
section{padding:80px 0}
section.alt-bg{background:var(--surface1)}

/* ===== Product Cards ===== */
.products-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.product-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:var(--transition)}
.product-card:hover{box-shadow:var(--shadow-md);border-color:transparent;transform:translateY(-2px)}
.card-img{height:200px;overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s}
.product-card:hover .card-img img{transform:scale(1.05)}
.card-body{padding:20px}
.card-body h3{font-size:18px;font-weight:600;color:var(--text-primary);margin-bottom:8px;letter-spacing:-0.3px}
.card-body p{font-size:14px;color:var(--text-secondary);line-height:1.7}

/* ===== Advantages ===== */
.advantages-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.advantage-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:var(--transition)}
.advantage-card:hover{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary)}
.advantage-card .icon{width:48px;height:48px;background:var(--primary-light);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:20px;margin-bottom:16px}
.advantage-card h3{font-size:16px;font-weight:600;color:var(--text-primary);margin-bottom:8px;letter-spacing:-0.2px}
.advantage-card p{font-size:14px;color:var(--text-secondary);line-height:1.7}

/* ===== About ===== */
.about-section{background:var(--surface1)}
.about-content{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.about-img{border-radius:var(--radius);overflow:hidden}
.about-text h2{font-size:28px;font-weight:700;color:#202146;margin-bottom:16px;letter-spacing:-0.5px}
.about-text p{font-size:15px;color:var(--text-secondary);line-height:1.8;margin-bottom:14px}

/* ===== Contact ===== */
.contact-section{background:var(--white)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.contact-form input,.contact-form textarea,.contact-form select{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:14px;font-family:'Inter',sans-serif;transition:var(--transition);background:var(--white)}
.contact-form input:focus,.contact-form textarea:focus,.contact-form select:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px var(--primary-light)}
.contact-info{display:flex;flex-direction:column;gap:20px}
.contact-item{display:flex;gap:14px;align-items:flex-start}
.contact-item i{width:40px;height:40px;background:var(--primary-light);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--primary);flex-shrink:0}
.contact-item h4{font-size:14px;font-weight:600;color:var(--text-primary);margin-bottom:4px}
.contact-item p{font-size:14px;color:var(--text-secondary)}

/* ===== Price Cards ===== */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.price-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:var(--transition)}
.price-card:hover{border-color:var(--primary);box-shadow:var(--shadow-sm)}
.price-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.price-icon{font-size:28px}
.price-name{font-size:16px;font-weight:600;color:var(--text-primary);letter-spacing:-0.2px}
.price-name-en{font-size:12px;color:var(--text-muted)}
.price-range{font-size:22px;font-weight:700;color:var(--primary);letter-spacing:-0.5px}
.price-unit{font-size:13px;font-weight:400;color:var(--text-secondary)}
.price-trend{font-size:13px;font-weight:500;padding:3px 8px;border-radius:var(--radius-sm)}
.price-trend.up{color:#1A5F10;background:var(--green-light)}
.price-trend.down{color:#C0392B;background:#FDE8E8}
.price-trend.flat{color:var(--text-secondary);background:var(--surface2)}
.price-source{font-size:11px;color:var(--text-muted);margin-top:12px;padding-top:10px;border-top:1px solid var(--border-light)}

/* ===== Data Table ===== */
.data-table{width:100%;border-collapse:collapse;font-size:14px}
.data-table th{background:var(--surface2);padding:12px 16px;text-align:left;font-weight:600;color:var(--text-primary);font-size:12px;text-transform:uppercase;letter-spacing:0.5px;border-bottom:2px solid var(--border)}
.data-table td{padding:12px 16px;border-bottom:1px solid var(--border-light);color:var(--text-secondary)}
.data-table tr:hover td{background:var(--surface1)}
.data-table .highlight{color:var(--primary);font-weight:600}

/* ===== Footer ===== */
footer{background:linear-gradient(180deg,var(--navy) 0%,#050330 100%);color:var(--white);padding:64px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--white)}
.footer-col p{font-size:13px;color:rgba(255,255,255,0.6);line-height:1.7}
.footer-col a{display:block;font-size:13px;color:rgba(255,255,255,0.7);padding:4px 0;transition:var(--transition)}
.footer-col a:hover{color:var(--white);opacity:1}
.footer-contact{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:13px;color:rgba(255,255,255,0.7)}
.footer-contact i{color:var(--primary);width:16px}
.footer-bottom{text-align:center;font-size:12px;color:rgba(255,255,255,0.4);padding-top:24px;border-top:1px solid rgba(255,255,255,0.1)}

/* ===== Search ===== */
.search-box{position:relative;max-width:500px}
.search-box input{width:100%;padding:14px 20px 14px 44px;border:1px solid var(--border);border-radius:var(--radius-pill);font-size:15px;transition:var(--transition);background:var(--white)}
.search-box input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light);outline:none}
.search-box .search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:16px}
.search-box button{position:absolute;right:6px;top:50%;transform:translateY(-50%);background:var(--primary);color:var(--white);border:none;padding:8px 20px;border-radius:var(--radius-pill);font-size:14px;font-weight:500;cursor:pointer;transition:var(--transition)}
.search-box button:hover{background:var(--primary-hover)}

/* ===== Responsive ===== */
@media(max-width:991px){
  .nav-wrap{padding:0 20px}
  .hero h1{font-size:36px}
  .products-grid,.advantages-grid,.price-grid{grid-template-columns:repeat(2,1fr)}
  .about-content{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
/* Mobile menu open state */
@media(max-width:767px){
  nav ul{display:none;position:absolute;top:62px;left:0;right:0;background:var(--white);flex-direction:column;padding:16px 0;box-shadow:var(--shadow-lg);border-top:1px solid var(--border)}
  nav ul.open{display:flex}
  nav ul li a{height:auto;padding:12px 24px;justify-content:flex-start}
  nav ul li a.active{box-shadow:none;color:var(--primary);font-weight:600}
  .lang-switcher{padding:12px 24px;border-top:1px solid var(--border);margin-top:8px;margin-left:0}
  .hamburger{display:flex}
  .hero{padding:60px 0 48px}
  .hero h1{font-size:28px}
  .hero-stats{flex-wrap:wrap;gap:24px}
  .products-grid,.advantages-grid,.price-grid{grid-template-columns:1fr}
  section{padding:48px 0}
  .footer-grid{grid-template-columns:1fr}
  .page-header h1{font-size:24px}
  .container-wide{padding-left:20px;padding-right:20px}
}