/* Studentsdash v3 — Full Responsive Neo-Brutalist Design */
:root{--ink:#111;--ink-mid:#1d1d1d;--ink-soft:#333;--paper:#f6f4ef;--paper-dk:#edead9;--cream:#fffef9;--yellow:#ffe135;--yellow-dk:#d4b800;--teal:#009e8c;--red:#e63946;--green:#0a9669;--white:#fff;--muted:#6a6a6a;--border:#d5d0c0;--border-lt:#e8e3d0;--bw:2px solid var(--ink);--bs:4px 4px 0 var(--ink);--bsl:6px 6px 0 var(--ink);--bsy:4px 4px 0 var(--yellow-dk);--font-h:'Fraunces',Georgia,serif;--font-b:'DM Sans',-apple-system,system-ui,sans-serif;--r:6px;--rl:12px;--t:200ms cubic-bezier(.4,0,.2,1);--h:68px}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;text-size-adjust:100%}
body{font-family:var(--font-b);font-size:16px;line-height:1.65;color:var(--ink);background:var(--paper)}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4,h5,h6{font-family:var(--font-h);line-height:1.18}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 20px}
.section{padding:64px 0}.section-lg{padding:88px 0}.section-sm{padding:40px 0}
main{margin-top:var(--h)}

/* HEADER */
.site-header{position:fixed;inset:0 0 auto 0;height:var(--h);background:var(--cream);border-bottom:var(--bw);z-index:1000;transition:box-shadow var(--t)}
.site-header.scrolled{box-shadow:0 2px 0 var(--ink)}
.header-inner{max-width:1160px;margin:0 auto;padding:0 20px;height:100%;display:flex;align-items:center}
.logo{display:flex;align-items:center;gap:9px;flex-shrink:0;margin-right:auto}
.logo-img{width:36px;height:36px;border-radius:var(--r);border:var(--bw);object-fit:cover;flex-shrink:0}
.logo-text{font-family:var(--font-h);font-weight:700;font-size:1.15rem;color:var(--ink);letter-spacing:-.025em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:2px;margin:0 16px}
.main-nav a{padding:7px 13px;font-size:.875rem;font-weight:500;color:var(--ink-soft);border-radius:var(--r);border:2px solid transparent;transition:background var(--t),color var(--t),border-color var(--t);white-space:nowrap}
.main-nav a:hover{background:var(--yellow);color:var(--ink);border-color:var(--ink)}
.main-nav a.active{background:var(--ink);color:var(--white);border-color:var(--ink)}
.header-actions{display:flex;align-items:center;gap:6px;flex-shrink:0}
.btn-icon{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border:var(--bw);border-radius:var(--r);background:transparent;color:var(--ink);transition:background var(--t)}
.btn-icon:hover{background:var(--yellow)}
.nav-toggle{display:none;flex-direction:column;align-items:center;justify-content:center;gap:5px;width:38px;height:38px;border:var(--bw);border-radius:var(--r);background:var(--cream)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:1px;transition:transform var(--t),opacity var(--t),width var(--t)}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0;width:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:11px 22px;font-family:var(--font-b);font-size:.9rem;font-weight:700;border-radius:var(--r);border:var(--bw);cursor:pointer;transition:transform 120ms ease,box-shadow 120ms ease,background var(--t);text-decoration:none;white-space:nowrap;letter-spacing:.01em;line-height:1.3}
.btn:active{transform:translate(3px,3px)!important;box-shadow:0 0 0!important}
.btn-primary{background:var(--ink);color:var(--white);box-shadow:var(--bs)}
.btn-yellow{background:var(--yellow);color:var(--ink);box-shadow:var(--bs)}
.btn-teal{background:var(--teal);color:var(--white);box-shadow:var(--bs)}
.btn-outline{background:var(--white);color:var(--ink);box-shadow:var(--bs)}
.btn-ghost-light{background:transparent;color:var(--white);border-color:rgba(255,255,255,.45);box-shadow:4px 4px 0 rgba(255,255,255,.12)}
.btn-primary:hover{transform:translate(-2px,-2px);box-shadow:var(--bsl)}
.btn-yellow:hover{transform:translate(-2px,-2px);box-shadow:var(--bsl);background:var(--yellow-dk)}
.btn-teal:hover{transform:translate(-2px,-2px);box-shadow:var(--bsl);background:#007e6f}
.btn-outline:hover{transform:translate(-2px,-2px);box-shadow:var(--bsl);background:var(--paper)}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);border-color:var(--white);transform:translate(-2px,-2px)}
.btn-lg{padding:14px 28px;font-size:.95rem}.btn-sm{padding:7px 14px;font-size:.8rem}
.btn-full{width:100%}

/* HERO */
.hero{background:var(--ink);color:var(--white);padding:72px 0 64px;position:relative;overflow:hidden;border-bottom:var(--bw)}
.hero::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:44px 44px;pointer-events:none}
.hero::after{content:'';position:absolute;top:-100px;right:-60px;width:380px;height:380px;background:var(--yellow);border-radius:50%;opacity:.055;pointer-events:none}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:var(--yellow);color:var(--ink);padding:5px 12px;border:2px solid var(--ink);border-radius:var(--r);font-size:.7rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;margin-bottom:16px}
.hero h1{font-size:clamp(2rem,4vw,3.2rem);font-weight:700;font-style:italic;color:var(--white);margin-bottom:16px;letter-spacing:-.025em;line-height:1.1}
.hero h1 em{font-style:normal;color:var(--yellow)}
.hero-sub{font-size:.975rem;color:rgba(255,255,255,.6);margin-bottom:28px;max-width:440px;line-height:1.7}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.hero-stats{display:flex;gap:28px;margin-top:32px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1)}
.hero-stat strong{display:block;font-family:var(--font-h);font-size:1.65rem;font-weight:700;color:var(--yellow);line-height:1}
.hero-stat span{font-size:.7rem;color:rgba(255,255,255,.38);text-transform:uppercase;letter-spacing:.07em;margin-top:3px;display:block}
.hero-card{background:var(--white);border:var(--bw);border-radius:var(--rl);padding:30px;box-shadow:var(--bsl)}
.hero-card h3{font-family:var(--font-h);font-size:1.12rem;color:var(--ink);margin-bottom:4px}
.hero-card-sub{font-size:.83rem;color:var(--muted);margin-bottom:18px}
.code-group{display:flex;border:var(--bw);border-radius:var(--r);overflow:hidden;transition:box-shadow var(--t)}
.code-group:focus-within{box-shadow:var(--bsy)}
.code-group input{flex:1;padding:13px 14px;font-family:var(--font-b);font-size:.93rem;font-weight:600;letter-spacing:.12em;border:none;background:var(--paper);color:var(--ink);outline:none;min-width:0;text-transform:uppercase}
.code-group input::placeholder{font-weight:400;color:rgba(17,17,17,.3);text-transform:none;letter-spacing:.08em}
.code-group button{padding:13px 18px;background:var(--ink);border:none;border-left:var(--bw);color:var(--white);font-weight:800;font-size:.83rem;letter-spacing:.04em;transition:background var(--t);white-space:nowrap;flex-shrink:0}
.code-group button:hover{background:var(--teal)}
.code-error{color:var(--red);font-size:.78rem;min-height:18px;margin-top:6px}
.or-divider{position:relative;text-align:center;color:var(--muted);font-size:.77rem;margin:14px 0}
.or-divider::before,.or-divider::after{content:'';position:absolute;top:50%;width:calc(50% - 26px);height:1px;background:var(--border)}
.or-divider::before{left:0}.or-divider::after{right:0}

/* SEARCH BAR */
.search-wrap{background:var(--yellow);padding:20px 0;border-bottom:var(--bw)}
.search-inner{max-width:700px;margin:0 auto;padding:0 20px;position:relative}
.search-form{display:flex;border:var(--bw);border-radius:var(--r);overflow:visible;background:var(--white);box-shadow:var(--bs);transition:box-shadow var(--t);position:relative}
.search-form:focus-within{box-shadow:var(--bsl)}
.search-input{flex:1;padding:13px 16px;font-family:var(--font-b);font-size:.93rem;border:none;outline:none;color:var(--ink);background:transparent;min-width:0}
.search-input::placeholder{color:rgba(17,17,17,.38)}
.search-submit{padding:13px 20px;background:var(--ink);border:none;border-left:var(--bw);color:var(--white);display:flex;align-items:center;gap:6px;font-family:var(--font-b);font-weight:700;font-size:.86rem;transition:background var(--t);white-space:nowrap;flex-shrink:0}
.search-submit:hover{background:var(--teal)}
#searchSuggestions{position:absolute;top:calc(100% + 4px);left:0;right:0;background:var(--white);border:var(--bw);border-radius:var(--r);box-shadow:var(--bs);overflow:hidden;z-index:300}
#searchSuggestions a{display:flex;align-items:center;gap:10px;padding:10px 14px;font-size:.86rem;color:var(--ink);transition:background var(--t);border-top:1px solid var(--border-lt)}
#searchSuggestions a:first-child{border-top:none}
#searchSuggestions a:hover{background:var(--paper)}
#searchSuggestions mark{background:var(--yellow);border-radius:2px}
.suggest-tag{margin-left:auto;font-size:.68rem;background:var(--paper-dk);border:1.5px solid var(--border);padding:2px 6px;border-radius:4px;font-weight:700;flex-shrink:0;white-space:nowrap}

/* SEC HEADERS */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:28px;gap:16px}
.sec-head-left .eyebrow{font-size:.7rem;font-weight:800;letter-spacing:.13em;text-transform:uppercase;color:var(--teal);display:block;margin-bottom:4px}
.sec-head-left h2{font-size:clamp(1.35rem,2.5vw,1.9rem);font-weight:600}
.view-all-link{font-size:.83rem;font-weight:700;color:var(--ink);display:flex;align-items:center;gap:4px;border-bottom:2px solid var(--ink);padding-bottom:2px;flex-shrink:0;transition:color var(--t),border-color var(--t)}
.view-all-link:hover{color:var(--teal);border-color:var(--teal)}

/* CATEGORY CARDS */
.cat-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.cat-card{display:block;padding:20px 14px 16px;background:var(--white);border:var(--bw);border-radius:var(--rl);text-align:center;text-decoration:none;color:var(--ink);box-shadow:3px 3px 0 var(--ink);transition:transform 140ms ease,box-shadow 140ms ease,background var(--t)}
.cat-card:hover{transform:translate(-2px,-2px);box-shadow:var(--bsl);background:var(--yellow)}
.cat-dot{width:38px;height:38px;border-radius:50%;border:2px solid var(--ink);display:flex;align-items:center;justify-content:center;margin:0 auto 10px}
.cat-name{font-family:var(--font-h);font-weight:600;font-size:.85rem;margin-bottom:3px;line-height:1.2}
.cat-count{font-size:.72rem;color:var(--muted)}

/* PRODUCT CARDS */
.cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
.product-card{background:var(--white);border:var(--bw);border-radius:var(--rl);overflow:hidden;display:flex;flex-direction:column;transition:transform 140ms ease,box-shadow 140ms ease}
.product-card:hover{transform:translate(-3px,-3px);box-shadow:var(--bsl)}
.card-thumb{height:140px;background:var(--paper-dk);border-bottom:var(--bw);position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden;flex-shrink:0}
.card-thumb img{width:100%;height:100%;object-fit:cover}
.card-doc-icon{width:40px;height:52px;opacity:.22}
.card-badge{position:absolute;top:9px;right:9px;padding:3px 8px;border:2px solid var(--ink);border-radius:4px;font-size:.67rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase}
.badge-free{background:#d1fae5;color:#065f46}.badge-paid{background:var(--yellow);color:var(--ink)}.badge-featured{background:var(--ink);color:var(--yellow)}
.card-body{padding:15px;flex:1;display:flex;flex-direction:column}
.card-cat{display:inline-flex;align-items:center;gap:5px;font-size:.69rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:5px;text-decoration:none}
.card-cat:hover{color:var(--teal)}
.cat-dot-sm{width:7px;height:7px;border-radius:50%;display:inline-block;flex-shrink:0}
.card-title{font-family:var(--font-h);font-size:.96rem;font-weight:600;color:var(--ink);margin-bottom:6px;line-height:1.28;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-title a:hover{color:var(--teal)}
.card-desc{font-size:.81rem;color:var(--muted);line-height:1.5;flex:1;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{display:flex;align-items:center;justify-content:space-between;padding-top:10px;border-top:1.5px solid var(--border-lt)}
.card-price{font-family:var(--font-h);font-weight:700;font-size:.97rem;color:var(--ink)}
.card-price-free{color:var(--green)}
.card-meta{display:flex;gap:7px;font-size:.72rem;color:var(--muted);align-items:center}

/* MATERIALS SIDEBAR */
.mats-layout{display:grid;grid-template-columns:210px 1fr;gap:28px;align-items:start}
.mats-sidebar{position:sticky;top:calc(var(--h) + 16px)}
.sidebar-box{background:var(--white);border:var(--bw);border-radius:var(--rl);overflow:hidden;box-shadow:var(--bs);margin-bottom:14px}
.sidebar-box:last-child{margin-bottom:0}
.sidebar-title{padding:10px 14px;background:var(--ink);color:var(--white);font-size:.68rem;font-weight:800;text-transform:uppercase;letter-spacing:.09em}
.sidebar-body{padding:7px}
.filter-link{display:flex;align-items:center;gap:7px;padding:8px 9px;font-size:.83rem;font-weight:500;color:var(--ink-soft);border-radius:4px;text-decoration:none;transition:background var(--t),color var(--t);margin-bottom:1px}
.filter-link:hover,.filter-link.active{background:var(--ink);color:var(--white)}
.filter-cnt{margin-left:auto;font-size:.71rem;color:var(--muted)}
.filter-link.active .filter-cnt{color:rgba(255,255,255,.45)}

/* PRODUCT DETAIL */
.product-layout{display:grid;grid-template-columns:1fr 300px;gap:32px;align-items:start}
.product-purchase-card{background:var(--white);border:var(--bw);border-radius:var(--rl);padding:22px;position:sticky;top:calc(var(--h) + 16px);box-shadow:var(--bs)}
.purchase-price{font-family:var(--font-h);font-size:1.85rem;font-weight:700}
.purchase-price-free{color:var(--green)}
.purchase-divider{height:1.5px;background:var(--border-lt);margin:16px 0}
.purchase-row{display:flex;justify-content:space-between;font-size:.82rem;margin-bottom:7px}
.purchase-row :first-child{color:var(--muted)}
.purchase-row :last-child{font-weight:600}
.product-content{font-size:.93rem;line-height:1.78;color:#333}
.product-content h2,.product-content h3{font-family:var(--font-h);margin:20px 0 8px;color:var(--ink)}
.product-content p{margin-bottom:12px}
.product-content ul,.product-content ol{padding-left:20px;margin-bottom:12px}
.product-content li{margin-bottom:4px}
.product-content a{color:var(--teal);text-decoration:underline}
.product-content strong{font-weight:700}
.product-content blockquote{border-left:3px solid var(--yellow);padding:10px 14px;margin:16px 0;background:var(--paper);color:var(--muted);font-style:italic;border-radius:0 var(--r) var(--r) 0}
.product-content code{background:var(--paper-dk);padding:2px 5px;border-radius:3px;font-size:.87em;font-family:monospace;border:1px solid var(--border)}

/* MODALS */
.modal-overlay{position:fixed;inset:0;background:rgba(17,17,17,.78);z-index:9000;display:flex;align-items:center;justify-content:center;padding:20px;opacity:0;pointer-events:none;transition:opacity var(--t)}
.modal-overlay.active{opacity:1;pointer-events:all}
.modal{background:var(--white);border:var(--bw);border-radius:var(--rl);box-shadow:var(--bsl);padding:32px;max-width:440px;width:100%;transform:scale(.95) translateY(18px);transition:transform 240ms cubic-bezier(.4,0,.2,1);position:relative}
.modal-overlay.active .modal{transform:scale(1) translateY(0)}
.modal-close{position:absolute;top:12px;right:12px;width:28px;height:28px;border:var(--bw);border-radius:4px;background:var(--paper);display:flex;align-items:center;justify-content:center;font-size:.88rem;font-weight:700;transition:background var(--t)}
.modal-close:hover{background:var(--yellow)}
.code-display{background:var(--ink);border:var(--bw);border-radius:var(--rl);padding:22px;text-align:center;color:var(--white);margin-top:14px}
.code-val{font-family:'Courier New',monospace;font-size:1.45rem;font-weight:800;color:var(--yellow);letter-spacing:.2em;background:rgba(255,255,255,.07);border:2px dashed rgba(255,255,255,.2);padding:11px 16px;border-radius:var(--r);margin:10px 0;display:block;cursor:pointer}
.code-val:hover{background:rgba(255,255,255,.13)}

/* FORMS */
.form-group{margin-bottom:14px}
.form-label{display:block;font-size:.8rem;font-weight:700;margin-bottom:5px;color:var(--ink)}
.form-control{width:100%;padding:10px 12px;border:var(--bw);border-radius:var(--r);font-family:var(--font-b);font-size:.88rem;color:var(--ink);background:var(--paper);outline:none;transition:box-shadow var(--t)}
.form-control:focus{box-shadow:var(--bsy)}
select.form-control{cursor:pointer}
textarea.form-control{resize:vertical;min-height:90px}

/* BREADCRUMB */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:6px;font-size:.78rem;color:var(--muted);margin-bottom:14px}
.breadcrumb a{color:var(--teal)}
.breadcrumb-sep{opacity:.35}

/* ALERTS */
.alert{padding:11px 15px;border:var(--bw);border-radius:var(--r);font-size:.87rem;margin-bottom:13px;display:flex;align-items:flex-start;gap:8px}
.alert-success{background:#d1fae5}.alert-error{background:#fee2e2}.alert-info{background:#dbeafe}.alert-warning{background:#fef3c7}

/* PAGINATION */
.pagination{display:flex;align-items:center;justify-content:center;gap:6px;margin-top:40px;flex-wrap:wrap}
.page-link{min-width:38px;height:38px;display:flex;align-items:center;justify-content:center;border:var(--bw);border-radius:var(--r);background:var(--white);color:var(--ink);font-size:.84rem;font-weight:600;text-decoration:none;box-shadow:2px 2px 0 var(--ink);transition:transform 130ms ease,box-shadow 130ms ease,background var(--t)}
.page-link:hover{transform:translate(-1px,-1px);box-shadow:3px 3px 0 var(--ink);background:var(--yellow)}
.page-link.active{background:var(--ink);color:var(--white)}

/* FOOTER */
.site-footer{background:var(--ink);color:rgba(246,244,239,.68);border-top:var(--bw);margin-top:72px}
.footer-top{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;padding:52px 0 40px}
.footer-brand .logo-text{color:var(--paper)}
.footer-brand .logo-img{border-color:rgba(255,255,255,.2)}
.footer-desc{font-size:.84rem;line-height:1.65;margin-top:13px;max-width:290px;color:rgba(246,244,239,.38)}
.social-row{display:flex;gap:8px;margin-top:16px}
.social-link{width:32px;height:32px;border:2px solid rgba(255,255,255,.15);border-radius:var(--r);display:flex;align-items:center;justify-content:center;color:rgba(246,244,239,.45);transition:background var(--t),border-color var(--t),color var(--t)}
.social-link:hover{background:var(--yellow);border-color:var(--yellow);color:var(--ink)}
.footer-cols{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.footer-col h4{font-family:var(--font-h);font-size:.74rem;font-weight:700;color:var(--paper);text-transform:uppercase;letter-spacing:.1em;margin-bottom:12px}
.footer-col a{display:block;font-size:.82rem;color:rgba(246,244,239,.4);margin-bottom:7px;transition:color var(--t)}
.footer-col a:hover{color:var(--yellow)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.07);padding:17px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;font-size:.77rem;color:rgba(246,244,239,.22)}

/* 404 */
.error-page{min-height:68vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:48px 20px}
.error-num{font-family:var(--font-h);font-size:clamp(6rem,20vw,13rem);font-weight:700;font-style:italic;color:var(--paper-dk);line-height:.9;margin-bottom:10px;-webkit-text-stroke:3px var(--ink);paint-order:stroke fill}
.error-page h2{font-size:1.45rem;margin-bottom:9px}
.error-page p{color:var(--muted);max-width:380px;margin-bottom:26px}

/* FLASH */
.flash-msg{position:fixed;top:calc(var(--h) + 12px);right:16px;z-index:9999;min-width:256px;max-width:340px;border:var(--bw);box-shadow:var(--bs);border-radius:var(--r);padding:12px 15px;font-size:.87rem;transition:opacity .4s,transform .4s}

/* CTA BAND */
.cta-band{background:var(--yellow);border-top:var(--bw);border-bottom:var(--bw);padding:52px 0;text-align:center}
.cta-band h2{font-family:var(--font-h);font-size:clamp(1.6rem,3vw,2.2rem);font-style:italic;margin-bottom:11px}
.cta-band p{color:var(--ink-soft);margin-bottom:24px;font-size:.93rem;max-width:500px;margin-inline:auto}
.cta-band-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* RICH CONTENT */
.rich-content img{border-radius:var(--rl);max-width:100%;margin:14px 0;border:var(--bw)}
.rich-content table{width:100%;border-collapse:collapse;margin:16px 0;border:var(--bw)}
.rich-content th,.rich-content td{border:1.5px solid var(--border);padding:9px 12px}
.rich-content th{background:var(--paper-dk);font-weight:700}

/* ACCESS INLINE */
.access-inline input{width:100%;padding:10px 13px;border:var(--bw);border-radius:var(--r);font-family:var(--font-b);font-size:.9rem;margin-bottom:8px;letter-spacing:.1em;outline:none;transition:box-shadow var(--t);background:var(--paper);color:var(--ink);text-transform:uppercase}
.access-inline input:focus{box-shadow:var(--bsy)}

/* MISC */
.w-full{width:100%}.text-center{text-align:center}.text-muted{color:var(--muted)}.hidden{display:none!important}.mt-auto{margin-top:auto}.d-flex{display:flex}.gap-2{gap:8px}.gap-3{gap:12px}.flex-wrap{flex-wrap:wrap}.align-center{align-items:center}.justify-center{justify-content:center}
@keyframes spin{to{transform:rotate(360deg)}}
.spinner{width:34px;height:34px;border:3px solid rgba(255,255,255,.2);border-top-color:white;border-radius:50%;animation:spin .85s linear infinite}

/* ══════════════════ RESPONSIVE ══════════════════ */
/* Tablet / medium */
@media(max-width:1000px){
  .cat-grid{grid-template-columns:repeat(3,1fr)}
}
/* Mobile nav */
@media(max-width:860px){
  .main-nav{position:fixed;top:var(--h);left:0;right:0;background:var(--cream);border-bottom:var(--bw);flex-direction:column;align-items:stretch;gap:3px;padding:14px 16px 20px;margin:0;transform:translateY(-110%);opacity:0;pointer-events:none;transition:transform 240ms cubic-bezier(.4,0,.2,1),opacity 200ms ease;z-index:990;box-shadow:0 6px 0 var(--ink)}
  .main-nav.open{transform:translateY(0);opacity:1;pointer-events:all}
  .main-nav a{padding:11px 14px;font-size:.95rem;border:2px solid transparent}
  .main-nav a:hover,.main-nav a.active{background:var(--ink);color:var(--white);border-color:var(--ink)}
  .nav-toggle{display:flex}
  /* Hero */
  .hero{padding:52px 0 48px}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-card{max-width:480px}
  .hero h1{font-size:clamp(1.8rem,5vw,2.5rem)}
  .hero-stats{gap:20px}
  /* Product detail */
  .product-layout{grid-template-columns:1fr}
  .product-purchase-card{position:static!important}
  /* Footer */
  .footer-top{grid-template-columns:1fr;gap:36px}
  .mats-sidebar{position:static;display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch}
  .mats-sidebar>.sidebar-box{min-width:165px;flex-shrink:0;margin-bottom:0}
  .mats-layout{grid-template-columns:1fr}
}
@media(max-width:640px){
  :root{--h:60px}
  .cards-grid{grid-template-columns:1fr 1fr;gap:12px}
  .card-thumb{height:110px}
  .card-body{padding:12px}
  .card-desc{display:none}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .sec-head{flex-direction:column;align-items:flex-start;gap:8px}
  .footer-cols{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
}
@media(max-width:420px){
  .cards-grid{grid-template-columns:1fr}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{justify-content:center}
  .hero-stats{gap:14px}
  .hero-stat strong{font-size:1.35rem}
  .container{padding:0 14px}
  .search-submit span{display:none}
  .search-submit{padding:13px 16px}
  .cta-band-actions{flex-direction:column;align-items:center}
  .flash-msg{left:14px;right:14px;min-width:0}
}