/* Biomedionics — Main Stylesheet — Fully Responsive */

/* ═══ RESET & BASE ═══════════════════════════════════════════════════ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --navy:#0a1628;--navy2:#0f2040;--blue:#1a56db;--blue2:#1d4ed8;
  --sky:#38bdf8;--green:#10b981;--red:#ef4444;--orange:#f59e0b;
  --white:#ffffff;--off:#f8fafc;--border:#e2e8f0;--border2:#cbd5e1;
  --text:#1e293b;--text2:#475569;--text3:#94a3b8;
  --shadow:0 4px 24px rgba(0,0,0,.08);
  --shadow2:0 8px 40px rgba(0,0,0,.14);
  --radius:12px;--radius2:8px;
}
html{scroll-behavior:smooth}
body{font-family:'Segoe UI',system-ui,sans-serif;background:var(--off);color:var(--text);min-height:100vh;overflow-x:hidden}
a{color:inherit;text-decoration:none;cursor:pointer}
button{cursor:pointer;font-family:inherit;border:none;outline:none}
input,select,textarea{font-family:inherit;outline:none}
img{max-width:100%;height:auto}

/* ═══ ANNOUNCEMENT BAR ══════════════════════════════════════════════ */
.ann{background:var(--navy);color:#fff;text-align:center;padding:8px 16px;font-size:13px;font-weight:500}
.ann a{color:var(--sky);text-decoration:underline}

/* ═══ NAVBAR ════════════════════════════════════════════════════════ */
.nav{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:200;box-shadow:0 2px 12px rgba(0,0,0,.06)}
.nav-inner{max-width:1280px;margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;gap:8px}
.nav-logo{font-size:19px;font-weight:800;color:var(--navy);display:inline-flex;align-items:center;gap:7px;text-decoration:none;white-space:nowrap;flex-shrink:0;margin-right:16px}
.nav-logo .logo-icon{width:32px;height:32px;background:var(--blue);color:#fff;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:800;flex-shrink:0}
.nav-logo .logo-text span{color:var(--blue)}
.nav-links{display:flex;align-items:center;gap:2px;flex:1}
.nav-link{padding:7px 11px;border-radius:7px;font-size:13px;font-weight:600;color:var(--text2);transition:.15s;white-space:nowrap;text-decoration:none;display:inline-block}
.nav-link:hover{color:var(--navy);background:#f3f4f6}
.nav-link.active{color:var(--blue);background:#eff6ff}
.nav-right{display:inline-flex;align-items:center;gap:8px;margin-left:auto;flex-shrink:0}
.nav-search-input{padding:8px 14px;border:1.5px solid var(--border);border-radius:22px;font-size:13px;outline:none;width:150px;background:#f9fafb;transition:.2s}
.nav-search-input:focus{border-color:var(--blue);background:#fff;width:190px}
.nav-track-btn{padding:7px 13px;border:1.5px solid var(--border);border-radius:22px;font-size:12px;font-weight:600;color:var(--text2);text-decoration:none;white-space:nowrap;transition:.15s}
.nav-track-btn:hover{border-color:var(--blue);color:var(--blue)}
.nav-cart-btn{background:var(--blue);color:#fff;padding:9px 16px;border-radius:22px;font-size:13px;font-weight:700;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;text-decoration:none;position:relative;transition:.15s}
.nav-cart-btn:hover{background:var(--blue2)}
.cart-badge{background:#dc2626;color:#fff;border-radius:50%;min-width:18px;height:18px;font-size:10px;font-weight:800;display:inline-flex;align-items:center;justify-content:center;padding:0 3px}

/* Hamburger */
.nav-hamburger{display:none;flex-direction:column;justify-content:center;align-items:center;width:38px;height:38px;border:1.5px solid var(--border);border-radius:8px;background:#fff;cursor:pointer;gap:5px;flex-shrink:0}
.nav-hamburger span{display:block;width:18px;height:2px;background:var(--navy);border-radius:2px;transition:.25s}
.nav-hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-hamburger.open span:nth-child(2){opacity:0}
.nav-hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Mobile menu overlay */
.nav-mobile-menu{display:none;position:fixed;top:64px;left:0;right:0;background:#fff;border-bottom:2px solid var(--border);z-index:199;box-shadow:0 8px 32px rgba(0,0,0,.12);padding:16px 20px;flex-direction:column;gap:4px}
.nav-mobile-menu.open{display:flex}
.nav-mobile-menu .nav-link{padding:12px 16px;font-size:15px;border-radius:8px;display:block}
.nav-mobile-menu .nav-search-input{width:100%;margin-top:8px;display:block}

/* ═══ HERO ══════════════════════════════════════════════════════════ */
.hero{background:linear-gradient(135deg,var(--navy) 0%,var(--navy2) 50%,#1a3a6e 100%);padding:80px 24px;color:#fff;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 70% 50%,rgba(56,189,248,.08) 0%,transparent 60%)}
.hero-inner{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;position:relative}
.hero h1{font-size:clamp(26px,3.5vw,48px);font-weight:800;line-height:1.15;margin-bottom:16px}
.hero h1 em{color:var(--sky);font-style:normal}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}
.btn-primary{background:var(--blue);color:#fff;padding:13px 26px;border-radius:var(--radius);font-size:15px;font-weight:700;transition:.2s;display:inline-flex;align-items:center;gap:8px}
.btn-primary:hover{background:var(--blue2);transform:translateY(-1px)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.35);padding:12px 22px;border-radius:var(--radius);font-size:15px;font-weight:600;transition:.2s}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.06)}
.hero-stats{display:flex;gap:32px;margin-top:40px;flex-wrap:wrap}
.hero-stat-num{font-size:28px;font-weight:800;color:var(--sky)}
.hero-stat-lbl{font-size:12px;color:rgba(255,255,255,.6);margin-top:2px}
.hero-img-area{display:flex;flex-direction:column;gap:14px;padding-left:20px;border-left:1px solid rgba(255,255,255,.1)}

/* ═══ SECTIONS ══════════════════════════════════════════════════════ */
.section{padding:64px 24px}
.section-inner{max-width:1280px;margin:0 auto}
.section-hdr{text-align:center;margin-bottom:48px}
.section-tag{font-size:13px;font-weight:700;color:var(--blue);text-transform:uppercase;letter-spacing:1px;margin-bottom:8px}
.section-title{font-size:clamp(22px,3vw,36px);font-weight:800;color:var(--navy);margin-bottom:12px}
.section-sub{font-size:15px;color:var(--text2);max-width:560px;margin:0 auto}

/* ═══ DEVICE GRID ═══════════════════════════════════════════════════ */
.device-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(320px,100%),1fr));gap:24px;padding:4px 0}
.device-card{background:#fff;border:1px solid var(--border);border-radius:16px;overflow:hidden;transition:transform .2s,box-shadow .2s,border-color .2s;cursor:pointer;display:flex;flex-direction:column}
.device-card:hover{transform:translateY(-4px);box-shadow:var(--shadow2);border-color:var(--blue)}
.device-card-img{height:200px;background:linear-gradient(145deg,#f0f7ff,#e8f0fe);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;flex-shrink:0}
.device-card-img img{max-width:85%;max-height:180px;object-fit:contain;transition:.3s}
.device-card:hover .device-card-img img{transform:scale(1.05)}
.device-badge{position:absolute;top:12px;right:12px;background:var(--navy);color:#fff;font-size:10px;font-weight:800;padding:4px 10px;border-radius:20px;text-transform:uppercase;letter-spacing:.5px}
.device-badge.new,.device-badge[data-badge="new"]{background:var(--blue)}
.device-badge.bestseller{background:var(--green)}
.device-badge.soldout{background:var(--red)}
.device-body{padding:20px;flex:1;display:flex;flex-direction:column;gap:6px}
.device-cat{font-size:11px;font-weight:700;color:var(--blue);text-transform:uppercase;letter-spacing:1.5px}
.device-name{font-size:18px;font-weight:800;color:var(--navy);line-height:1.2}
.device-desc{font-size:13px;color:var(--text2);line-height:1.6;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.device-price-row{display:flex;align-items:center;justify-content:space-between;margin-top:10px;flex-wrap:wrap;gap:6px}
.device-price{font-size:20px;font-weight:800;color:var(--navy);white-space:nowrap}
.device-stock{font-size:12px;font-weight:600;white-space:nowrap}
.device-actions{display:grid;grid-template-columns:1fr 1.5fr;gap:8px;margin-top:14px}
.btn-detail{padding:10px;border:1.5px solid var(--border);border-radius:9px;font-size:13px;font-weight:600;text-align:center;cursor:pointer;color:#374151;background:#fff;text-decoration:none;display:flex;align-items:center;justify-content:center;transition:.15s}
.btn-detail:hover{border-color:var(--blue);color:var(--blue)}
.btn-add{padding:10px;border:none;border-radius:9px;font-size:13px;font-weight:700;background:var(--navy);color:#fff;cursor:pointer;font-family:inherit;transition:.15s}
.btn-add:hover{background:var(--blue)}

/* ═══ DEVICE DETAIL (quick view inline) ═══════════════════════════ */
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.detail-img{background:linear-gradient(135deg,#f0f9ff,#e0f2fe);border-radius:16px;height:320px;display:flex;align-items:center;justify-content:center;font-size:100px;border:1px solid var(--border)}
.detail-cat{font-size:12px;font-weight:700;color:var(--blue);text-transform:uppercase;letter-spacing:1px;margin-bottom:8px}
.detail-name{font-size:clamp(22px,3vw,30px);font-weight:800;color:var(--navy);margin-bottom:12px}
.detail-desc{font-size:15px;color:var(--text2);line-height:1.7;margin-bottom:20px}
.detail-price-row{display:flex;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.detail-price{font-size:32px;font-weight:800;color:var(--navy);white-space:nowrap}
.detail-stock{font-size:12px;color:#059669;font-weight:700;background:#f0fdf4;border:1px solid #6ee7b7;padding:4px 12px;border-radius:20px;white-space:nowrap}
.specs-table{background:var(--off);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);margin-bottom:20px}
.spec-row{display:flex;border-bottom:1px solid var(--border)}
.spec-row:last-child{border-bottom:none}
.spec-label{padding:10px 16px;font-size:13px;color:var(--text2);font-weight:600;flex:0 0 140px;background:#fff}
.spec-val{padding:10px 16px;font-size:13px;color:var(--text);font-weight:500;flex:1}
.qty-row{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.qty-label{font-size:14px;font-weight:600;color:var(--text2)}
.qty-ctrl{display:flex;align-items:center;border:1px solid var(--border);border-radius:var(--radius2);overflow:hidden}
.qty-btn{width:36px;height:36px;background:#fff;color:var(--navy);font-size:16px;font-weight:700;transition:.2s;border:none;cursor:pointer}
.qty-btn:hover{background:var(--off)}
.qty-num{width:48px;text-align:center;font-size:15px;font-weight:700;color:var(--navy);background:#fff;border:none;padding:0}
.detail-btns{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.btn-cart-main{background:var(--off);border:2px solid var(--border);color:var(--navy);padding:14px;border-radius:var(--radius);font-size:15px;font-weight:700;transition:.2s;cursor:pointer}
.btn-cart-main:hover{border-color:var(--blue);color:var(--blue)}
.btn-buy-main{background:var(--blue);color:#fff;padding:14px;border-radius:var(--radius);font-size:15px;font-weight:700;transition:.2s;cursor:pointer}
.btn-buy-main:hover{background:var(--blue2)}

/* Device detail pages (device-*.html) */
.dev-page-hero{background:linear-gradient(135deg,#f8fafc 0%,#eff6ff 100%);border-bottom:1px solid var(--border);padding:48px 24px 0}
.dev-page-inner{max-width:1100px;margin:0 auto}
.breadcrumb{font-size:12px;color:var(--text2);margin-bottom:16px}
.breadcrumb a{color:var(--blue);text-decoration:none;font-weight:600}
.detail-grid-2col{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;padding-bottom:48px}
.detail-img-wrap{background:linear-gradient(145deg,#f0f9ff,#e0f2fe);border-radius:20px;height:360px;display:flex;align-items:center;justify-content:center;border:1px solid var(--border);overflow:hidden;position:sticky;top:80px}
.detail-img-wrap img{max-width:85%;max-height:320px;object-fit:contain}
.badge-pill{display:inline-block;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:700;margin-bottom:12px}
.badge-new{background:#dbeafe;color:#1e40af}
.badge-bestseller{background:#fef3c7;color:#92400e}
.spec-table{background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden;margin:24px 0}
.btn-add-cart{background:var(--blue);color:#fff;padding:14px;border:none;border-radius:12px;font-size:15px;font-weight:700;cursor:pointer;font-family:inherit;transition:.2s;width:100%}
.btn-add-cart:hover{background:var(--blue2)}
.btn-buy-now{background:var(--navy);color:#fff;padding:14px;border:none;border-radius:12px;font-size:15px;font-weight:700;cursor:pointer;font-family:inherit;transition:.2s;width:100%}
.btn-buy-now:hover{background:#162040}
.similar-section{background:var(--off);border-top:1px solid var(--border);padding:48px 24px}
.similar-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px}
.similar-card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:20px;cursor:pointer;transition:.2s;text-decoration:none;display:block;color:inherit}
.similar-card:hover{transform:translateY(-3px);box-shadow:0 8px 32px rgba(0,0,0,.1);border-color:var(--blue)}

/* ═══ CONNECT DEVICE ════════════════════════════════════════════════ */
.connect-area{background:linear-gradient(135deg,#f0f9ff,#e0f2fe);border:1px solid #bae6fd;border-radius:16px;padding:24px;margin-top:28px}
.connect-title{font-size:15px;font-weight:700;color:#0369a1;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.conn-status-bar{padding:10px 16px;border-radius:var(--radius2);font-size:13px;font-weight:600;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.conn-status-bar.waiting{background:#fef9c3;color:#854d0e;border:1px solid #fde047}
.conn-status-bar.connected{background:#dcfce7;color:#166534;border:1px solid #4ade80}
.conn-dot{width:8px;height:8px;border-radius:50%;background:currentColor;animation:pulse 1.5s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.conn-btn{width:100%;padding:12px;border-radius:var(--radius2);font-size:14px;font-weight:700;transition:.2s;border:none;cursor:pointer}
.conn-btn.connect{background:var(--blue);color:#fff}
.conn-btn.connect:hover{background:var(--blue2)}
.conn-btn.disconnect{background:#fee2e2;color:var(--red);border:1px solid #fca5a5}

/* ═══ LIVE GRAPH ════════════════════════════════════════════════════ */
.graph-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:24px;margin-top:28px;display:none}
.graph-card.visible{display:block}
.graph-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:20px;gap:12px;flex-wrap:wrap}
.graph-title{font-size:16px;font-weight:800;color:var(--navy)}
.graph-device{font-size:12px;color:var(--text3);margin-top:2px}
.live-chip{display:inline-flex;align-items:center;gap:6px;background:#dcfce7;color:#166534;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:700}
.graph-export{display:flex;gap:8px;flex-wrap:wrap}
.btn-export{background:var(--off);border:1px solid var(--border);padding:7px 14px;border-radius:var(--radius2);font-size:12px;font-weight:600;color:var(--text2);transition:.2s;cursor:pointer}
.btn-export:hover{background:var(--border)}
.graph-canvas-wrap{position:relative;height:220px;margin-bottom:20px}

/* ═══ STATS GRID ════════════════════════════════════════════════════ */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.stat-box{background:var(--off);border:1px solid var(--border);border-radius:var(--radius2);padding:12px 14px}
.stat-tag{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--text3);margin-bottom:4px}
.stat-val{font-size:20px;font-weight:800;color:var(--navy)}
.stat-unit{font-size:11px;color:var(--text3);margin-top:2px}
.stat-mvc{border-color:#fde68a;background:#fffbeb}.stat-mvc .stat-val{color:#d97706}
.stat-peak{border-color:#fde68a;background:#fffbeb}.stat-peak .stat-val{color:#d97706}
.stat-ttp{border-color:#a7f3d0;background:#f0fdf4}.stat-ttp .stat-val{color:#059669}
.stat-rfd{border-color:#bfdbfe;background:#eff6ff}.stat-rfd .stat-val{color:var(--blue)}
.stat-fi{border-color:#fecaca;background:#fff1f2}.stat-fi .stat-val{color:var(--red)}
.stat-imp{border-color:#e9d5ff;background:#faf5ff}.stat-imp .stat-val{color:#7c3aed}

/* ═══ PAGES ═════════════════════════════════════════════════════════ */
.page{display:none;max-width:1280px;margin:0 auto;padding:40px 24px}
.page.active{display:block}
.page-title{font-size:26px;font-weight:800;color:var(--navy);margin-bottom:24px}

/* ═══ CART ══════════════════════════════════════════════════════════ */
.cart-grid{display:grid;grid-template-columns:1fr 340px;gap:28px;align-items:start}
.cart-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:16px;display:flex;gap:16px;align-items:center;margin-bottom:12px;flex-wrap:wrap}
.cart-item-img{width:64px;height:64px;background:var(--off);border-radius:var(--radius2);display:flex;align-items:center;justify-content:center;font-size:32px;flex:0 0 auto}
.cart-item-info{flex:1;min-width:0}
.cart-item-name{font-size:15px;font-weight:700;color:var(--navy)}
.cart-item-price{font-size:14px;color:var(--blue);font-weight:600;margin-top:2px}
.cart-item-remove{color:var(--red);font-size:13px;cursor:pointer;background:none;border:none}
.cart-item-qty{display:flex;align-items:center;gap:6px;margin-top:8px}
.cart-item-qty button{width:28px;height:28px;background:var(--off);border:1px solid var(--border);border-radius:6px;font-size:14px;font-weight:700;cursor:pointer}
.cart-summary-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;position:sticky;top:80px}
.cs-title{font-size:16px;font-weight:800;color:var(--navy);margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border)}
.cs-row{display:flex;justify-content:space-between;font-size:14px;color:var(--text2);margin-bottom:10px}
.cs-total{font-size:16px;font-weight:800;color:var(--navy);padding-top:10px;border-top:2px solid var(--border);margin-top:4px}
.btn-checkout{width:100%;background:var(--blue);color:#fff;padding:14px;border-radius:var(--radius);font-size:15px;font-weight:700;margin-top:16px;transition:.2s;display:block;text-align:center;border:none;cursor:pointer}
.btn-checkout:hover{background:var(--blue2)}

/* ═══ CHECKOUT ══════════════════════════════════════════════════════ */
.form-section{margin-bottom:24px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.form-section-title{font-size:15px;font-weight:800;color:var(--navy);margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:8px}
.form-section-num{width:24px;height:24px;background:var(--blue);color:#fff;border-radius:50%;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.form-row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-label{font-size:13px;font-weight:600;color:var(--text2)}
.form-input{padding:10px 14px;border:1.5px solid var(--border);border-radius:var(--radius2);font-size:14px;color:var(--text);transition:.2s;width:100%}
.form-input:focus{border-color:var(--blue)}

/* ═══ TRACK ═════════════════════════════════════════════════════════ */
.back-btn{display:inline-flex;align-items:center;gap:6px;color:var(--text2);font-size:13px;cursor:pointer;margin-bottom:20px;text-decoration:none}
.back-btn:hover{color:var(--navy)}

/* ═══ MODALS ════════════════════════════════════════════════════════ */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:9999;display:none;align-items:center;justify-content:center;padding:20px}
.modal-overlay.open{display:flex}
.modal-box{background:#fff;border-radius:20px;padding:32px;max-width:480px;width:100%;max-height:90vh;overflow-y:auto}
.modal-title{font-size:20px;font-weight:800;color:var(--navy);margin-bottom:16px;text-align:center}
.modal-input{width:100%;padding:14px 16px;border:2px solid var(--border);border-radius:var(--radius);font-size:16px;text-align:center;letter-spacing:2px;font-weight:700;margin-bottom:16px;transition:.2s}
.modal-input:focus{border-color:var(--blue)}
.modal-btns{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.btn-modal-cancel{background:var(--off);color:var(--text2);padding:12px;border-radius:var(--radius);font-size:14px;font-weight:600;border:none;cursor:pointer}
.btn-modal-ok{background:var(--blue);color:#fff;padding:12px;border-radius:var(--radius);font-size:14px;font-weight:700;border:none;cursor:pointer}

/* Spinner */
.spinner-overlay{position:fixed;inset:0;background:rgba(255,255,255,.92);z-index:1000;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px}
.spinner{width:48px;height:48px;border:4px solid var(--border);border-top-color:var(--blue);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.spinner-title{font-size:18px;font-weight:700;color:var(--navy)}
.spinner-msg{font-size:14px;color:var(--text2);max-width:280px;text-align:center;line-height:1.5}

/* ═══ TOAST ═════════════════════════════════════════════════════════ */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(80px);background:var(--navy);color:#fff;padding:12px 24px;border-radius:40px;font-size:14px;font-weight:600;z-index:2000;transition:.35s;white-space:nowrap}
.toast.show{transform:translateX(-50%) translateY(0)}

/* ═══ FOOTER ════════════════════════════════════════════════════════ */
.site-footer,.footer{background:var(--navy);color:rgba(255,255,255,.75);padding:60px 24px 28px}
.site-footer .footer-inner,.footer-inner{max-width:1280px;margin:0 auto}
.footer-grid,.site-footer .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-logo,.site-footer .footer-brand .footer-logo{font-size:24px;font-weight:800;color:#fff;margin-bottom:10px}
.footer-brand p,.site-footer .footer-brand p{font-size:13px;line-height:1.75;color:rgba(255,255,255,.6);max-width:280px}
.footer-contact,.site-footer .footer-contact{margin-top:16px;display:flex;flex-direction:column;gap:7px}
.footer-contact a,.site-footer .footer-contact a{font-size:13px;color:rgba(255,255,255,.55);text-decoration:none;transition:.2s;display:flex;align-items:center;gap:6px}
.footer-contact a:hover,.site-footer .footer-contact a:hover{color:#38bdf8}
.footer-col-title,.site-footer .footer-col-title{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1.5px;color:#fff;margin-bottom:14px}
.footer-links,.site-footer .footer-links{display:flex;flex-direction:column;gap:9px}
.footer-links a,.site-footer .footer-links a{font-size:13px;color:rgba(255,255,255,.6);text-decoration:none;transition:.2s}
.footer-links a:hover,.site-footer .footer-links a:hover{color:#fff;padding-left:4px}
.footer-bottom,.site-footer .footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;display:flex;justify-content:space-between;font-size:12px;color:rgba(255,255,255,.35);flex-wrap:wrap;gap:8px}

/* ═══ ORDERS / STATUS ═══════════════════════════════════════════════ */
.order-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:16px}
.order-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;padding-bottom:12px;border-bottom:1px solid var(--border);flex-wrap:wrap;gap:8px}
.order-id{font-size:13px;font-weight:700;color:var(--navy)}
.order-status{font-size:12px;font-weight:700;padding:4px 12px;border-radius:20px}
.status-pending{background:#fef3c7;color:#92400e}
.status-preparing{background:#dbeafe;color:#1e40af}
.status-onway{background:#e0f2fe;color:#0369a1}
.status-delivered{background:#dcfce7;color:#166534}
.status-cancelled{background:#fee2e2;color:#991b1b}
.status-returned{background:#fce7f3;color:#9d174d}

/* ═══ REVIEWS ═══════════════════════════════════════════════════════ */
.review-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:12px}
.review-header{display:flex;justify-content:space-between;margin-bottom:8px;flex-wrap:wrap;gap:8px}
.review-author{font-size:14px;font-weight:700;color:var(--navy)}
.review-stars{color:#f59e0b;font-size:14px}
.review-text{font-size:13px;color:var(--text2);line-height:1.6}
.star-select{display:flex;gap:6px;font-size:28px;cursor:pointer;margin:8px 0}
.star-select span{color:var(--border2);transition:.2s}
.star-select span.on{color:#f59e0b}

/* ═══ POLICY PAGES ══════════════════════════════════════════════════ */
.policy-wrap{max-width:720px;margin:0 auto}
.policy-section{margin-bottom:32px}
.policy-section h3{font-size:16px;font-weight:700;color:var(--navy);margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid var(--border)}
.policy-section p,.policy-section li{font-size:14px;color:var(--text2);line-height:1.8;margin-bottom:8px}
.policy-section ul{padding-left:20px}

/* ═══ SERVICES PAGE ═════════════════════════════════════════════════ */
.services-hero{background:linear-gradient(135deg,var(--navy) 0%,#1a3a6e 100%);color:#fff;padding:64px 24px 48px;text-align:center}
.services-hero h1{font-size:clamp(22px,4vw,36px);font-weight:800;margin-bottom:12px}
.services-hero p{font-size:14px;color:rgba(255,255,255,.65);max-width:560px;margin:0 auto;line-height:1.7}
.services-grid,.services-grid-wrap{max-width:1280px;margin:0 auto;padding:40px 24px;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(300px,100%),1fr));gap:24px}
.service-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:24px;transition:.25s;display:flex;flex-direction:column}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow2);border-color:var(--blue)}
.service-card-top{display:flex;gap:14px;align-items:flex-start;margin-bottom:14px}
.service-icon{width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;flex:0 0 auto}
.service-name{font-size:16px;font-weight:800;color:var(--navy);margin-bottom:4px}
.service-price{font-size:13px;color:var(--blue);font-weight:600}
.service-desc{font-size:13px;color:var(--text2);line-height:1.6;margin-bottom:14px;flex:1}
.service-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px}
.service-tag{background:var(--off);border:1px solid var(--border);padding:3px 10px;border-radius:20px;font-size:11px;font-weight:600;color:var(--text2)}
.service-footer{display:flex;gap:8px;margin-top:auto}
.service-btn-contact{flex:1;padding:10px;border-radius:var(--radius2);font-size:13px;font-weight:700;text-align:center;background:var(--blue);color:#fff;transition:.2s;display:block}
.service-btn-contact:hover{opacity:.9}
.services-empty{text-align:center;padding:60px 20px;color:var(--text2);grid-column:1/-1}

/* ═══ BLOGS PAGE ════════════════════════════════════════════════════ */
.blogs-hero{background:linear-gradient(135deg,var(--navy) 0%,#1a3a6e 100%);color:#fff;padding:56px 24px 40px;text-align:center}
.blogs-hero h1{font-size:clamp(22px,4vw,36px);font-weight:800;margin-bottom:10px}
.blogs-hero p{font-size:14px;color:rgba(255,255,255,.65);max-width:560px;margin:0 auto;line-height:1.7}
.blogs-inner{max-width:1100px;margin:0 auto;padding:0 24px}
.blog-cats-nav{display:flex;gap:8px;flex-wrap:wrap;padding:20px 0;border-bottom:2px solid var(--border);margin-bottom:24px;align-items:center}
.blog-cat-btn{display:inline-flex;align-items:center;gap:5px;padding:7px 16px;border-radius:6px;font-size:12px;font-weight:600;cursor:pointer;border:1px solid var(--border2);background:#fff;color:var(--text2);transition:.2s}
.blog-cat-btn.active,.blog-cat-btn:hover{background:var(--navy);color:#fff;border-color:var(--navy)}
.blog-list{display:flex;flex-direction:column;border:1px solid var(--border);border-radius:8px;overflow:hidden;margin-bottom:40px}
.blog-card{background:#fff;border-bottom:1px solid var(--border);padding:18px 22px;cursor:pointer;transition:background .15s;display:flex;gap:16px;align-items:flex-start}
.blog-card:last-child{border-bottom:none}
.blog-card:hover{background:#f8fafc}
.blog-card-num{font-size:13px;font-weight:700;color:var(--text3);min-width:24px;padding-top:2px}
.blog-card-main{flex:1;min-width:0}
.blog-card-journal{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.8px;color:var(--blue);margin-bottom:5px}
.blog-card-title{font-size:16px;font-weight:700;color:var(--navy);margin-bottom:5px;line-height:1.4}
.blog-card-authors{font-size:12px;color:var(--text2);font-style:italic;margin-bottom:5px}
.blog-card-abstract{font-size:13px;color:var(--text2);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:8px}
.blog-card-meta{font-size:11px;color:var(--text3);display:flex;gap:14px;flex-wrap:wrap}
.blog-card-thumb{width:90px;height:68px;border-radius:4px;object-fit:cover;flex-shrink:0;border:1px solid var(--border)}

/* Article view */
.art-journal-wrap{max-width:800px;margin:0 auto;padding:0 24px 60px}
.art-jheader{border-bottom:3px solid var(--navy);padding-bottom:18px;margin-bottom:18px}
.art-jtag{display:inline-block;background:var(--navy);color:#fff;padding:3px 12px;font-size:10px;font-weight:700;letter-spacing:1px;text-transform:uppercase;margin-bottom:10px}
.art-jtitle{font-size:clamp(20px,3.5vw,30px);font-weight:700;color:var(--navy);line-height:1.3;margin-bottom:14px;font-family:Georgia,serif}
.art-jauthors{font-size:14px;color:var(--blue);font-weight:600;margin-bottom:3px}
.art-jaffil{font-size:12px;color:var(--text2);font-style:italic;margin-bottom:10px}
.art-jmeta{display:flex;gap:18px;font-size:12px;color:var(--text2);flex-wrap:wrap;padding:10px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);margin-bottom:10px}
.art-jmeta strong{font-size:10px;text-transform:uppercase;display:block;color:#374151;margin-bottom:2px}
.art-doi{font-size:12px;color:var(--blue);font-family:monospace;margin-bottom:6px}
.art-keywords{font-size:12px;color:var(--text2);margin-bottom:14px}
.art-abstract-box{background:#f8fafc;border-left:4px solid var(--navy);padding:14px 18px;margin-bottom:20px;border-radius:0 6px 6px 0}
.art-abstract-box strong{font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:1px;color:var(--navy);display:block;margin-bottom:8px}
.art-body{font-family:Georgia,serif}
.art-body p{font-size:15px;color:var(--text);line-height:1.9;margin-bottom:16px}
.art-body h3{font-size:15px;font-weight:700;color:var(--navy);margin:24px 0 8px;padding-bottom:5px;border-bottom:1px solid var(--border);text-transform:uppercase;letter-spacing:.5px;font-family:'Segoe UI',sans-serif}
.art-body img{max-width:100%;border-radius:4px;margin:14px 0;border:1px solid var(--border)}
.art-body a{color:var(--blue);text-decoration:underline}
.art-body ul{padding-left:22px;margin-bottom:16px}
.art-body ul li{font-size:14px;color:var(--text);line-height:1.8;margin-bottom:4px}
.art-body table{width:100%;border-collapse:collapse;margin:14px 0;font-size:13px}
.art-body table th{background:var(--navy);color:#fff;padding:8px 12px;text-align:left;font-size:11px}
.art-body table td{padding:7px 12px;border:1px solid var(--border)}
.art-action-bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px;padding:12px 14px;background:#f0f7ff;border-radius:6px;border:1px solid #bfdbfe;align-items:center}
.art-action-btn{display:inline-flex;align-items:center;gap:5px;padding:7px 14px;border-radius:4px;font-size:12px;font-weight:600;cursor:pointer;border:none;font-family:inherit;transition:.2s}
.art-btn-pdf{background:var(--red);color:#fff}
.art-btn-print{background:#059669;color:#fff}
.art-btn-share{background:#fff;color:var(--navy);border:1px solid var(--border2)!important}
.art-stats-bar{font-size:11px;color:var(--text3);margin-left:auto;display:flex;gap:14px}
.art-references{margin-top:28px;padding-top:16px;border-top:2px solid var(--navy)}
.art-references strong{font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:1px;color:var(--navy);display:block;margin-bottom:12px}
.art-ref-item{font-size:11px;color:var(--text2);margin-bottom:7px;padding-left:20px;text-indent:-20px;line-height:1.6}
.back-btn{display:inline-flex;align-items:center;gap:6px;color:var(--text2);font-size:13px;cursor:pointer;margin-bottom:20px;text-decoration:none}
.back-btn:hover{color:var(--navy)}

/* ═══ UTILS ═════════════════════════════════════════════════════════ */
.hidden{display:none!important}
.empty-state{text-align:center;padding:60px 20px;color:var(--text2)}
.empty-state-icon{font-size:48px;margin-bottom:16px}
.empty-state h3{font-size:18px;font-weight:700;color:var(--navy);margin-bottom:8px}

/* ═══════════════════════════════════════════════════════════════════
   RESPONSIVE BREAKPOINTS
═══════════════════════════════════════════════════════════════════ */

/* Large desktop: 1280px+ — full layout, all elements visible */

/* Medium desktop / large tablet: <= 1100px */
@media(max-width:1100px){
  .hero-inner{gap:40px}
  .nav-search-input{width:130px}
}

/* Tablet landscape: <= 900px */
@media(max-width:900px){
  .footer-grid,.site-footer .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .hero-inner{gap:32px}
  .nav-search-input{width:110px}
  .cart-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .detail-grid-2col{grid-template-columns:1fr}
  .detail-img-wrap{position:static;height:280px;margin-bottom:24px}
  .detail-btns{grid-template-columns:1fr}
  .detail-grid{grid-template-columns:1fr}
}

/* Tablet portrait: <= 768px */
@media(max-width:768px){
  .nav-links{display:none}
  .nav-search-input{display:none}
  .nav-track-btn{display:none}
  .nav-hamburger{display:flex}
  .hero-inner{grid-template-columns:1fr}
  .hero-img-area{display:none}
  .hero{padding:56px 20px}
  .section{padding:48px 16px}
  .similar-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}
  .form-row2{grid-template-columns:1fr}
  .blogs-inner{padding:0 16px}
}

/* Mobile: <= 600px */
@media(max-width:600px){
  .footer-grid,.site-footer .footer-grid{grid-template-columns:1fr}
  .nav-inner{padding:0 16px}
  .hero h1{font-size:clamp(22px,6vw,32px)}
  .hero-stats{gap:20px}
  .hero-stat-num{font-size:22px}
  .device-grid{grid-template-columns:1fr}
  .device-card-img{height:180px}
  .blog-card-thumb{display:none}
  .similar-grid{grid-template-columns:1fr 1fr}
  .modal-btns{grid-template-columns:1fr}
  .cart-item{flex-wrap:wrap}
  .graph-header{flex-direction:column}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:8px}
  .stat-val{font-size:17px}
  .hero-btns{flex-direction:column;align-items:flex-start}
  .btn-primary,.btn-outline{width:100%;justify-content:center}
  .dev-page-hero{padding:32px 16px 0}
  .detail-img-wrap{height:220px}
  .art-journal-wrap{padding:0 16px 40px}
}

/* Small mobile: <= 400px */
@media(max-width:400px){
  .similar-grid{grid-template-columns:1fr}
  .nav-cart-btn span:not(.cart-badge){display:none}
  .nav-cart-btn::before{content:'🛒'}
}

/* ═══ PRINT — report styles scoped to @media print only ═════════════ */
@media print{
  .nav,.ann,.site-footer,.footer,.back-btn,.art-action-bar,.art-jtag,
  .nav-hamburger,.nav-mobile-menu{display:none!important}
  body{font-family:Arial,sans-serif;color:#1e293b;padding:20px;font-size:13px;background:#fff}
  .art-body{font-family:Arial,sans-serif}
  .cover{background:linear-gradient(135deg,#0a1628,#1a3a6e);color:#fff;padding:20px;border-radius:8px;margin-bottom:16px;display:flex;justify-content:space-between;align-items:flex-start;print-color-adjust:exact;-webkit-print-color-adjust:exact}
}

/* Checkout responsive grid */
.checkout-grid-wrap{display:grid;grid-template-columns:1fr 340px;gap:24px;align-items:start}
@media(max-width:860px){.checkout-grid-wrap{grid-template-columns:1fr}}