:root{
  --bg:#f5f7fb;--paper:#fff;--ink:#111827;--muted:#667085;--line:#e4e7ec;
  --blue:#3157d5;--blue-dark:#2443b3;--soft:#eef2ff;--danger:#b42318;
  --shadow:0 20px 60px rgba(16,24,40,.09);--radius:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.55}
body.menu-open{overflow:hidden}
a{text-decoration:none;color:inherit}
button,input,textarea,select{font:inherit}
button,a,input,textarea,select{outline:none}
button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid rgba(49,87,213,.22);outline-offset:2px}

/* Navigation */
.nav{height:74px;display:flex;align-items:center;justify-content:space-between;padding:0 max(20px,calc((100% - 1180px)/2));background:rgba(255,255,255,.88);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid rgba(228,231,236,.9);position:sticky;top:0;z-index:100}
.brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:850;letter-spacing:-.7px}
.brand-mark{display:grid;place-items:center;width:35px;height:35px;border-radius:10px;background:linear-gradient(135deg,#111827,#344054);color:#fff;font-size:15px;box-shadow:0 7px 18px rgba(16,24,40,.15)}
.menu-wrap{position:relative}
.menu-toggle{height:43px;padding:0 13px 0 15px;display:flex;align-items:center;gap:11px;border:1px solid #d8dde6;border-radius:11px;background:#fff;color:var(--ink);font-weight:800;cursor:pointer;transition:background .18s,border-color .18s,box-shadow .18s,transform .18s}
.menu-toggle:hover{background:#f8f9fb;border-color:#c8ced9;box-shadow:0 6px 18px rgba(16,24,40,.07)}
.menu-toggle:active{transform:translateY(1px)}
.menu-toggle-label{font-size:14px}
.menu-icon{width:18px;height:16px;display:grid;align-content:center;gap:3px}
.menu-icon i{display:block;width:18px;height:2px;border-radius:4px;background:#344054;transition:transform .2s,opacity .2s}
.menu-toggle[aria-expanded="true"] .menu-icon i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] .menu-icon i:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] .menu-icon i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.menu-popover{position:absolute;right:0;top:calc(100% + 10px);width:310px;padding:9px;background:rgba(255,255,255,.98);border:1px solid var(--line);border-radius:16px;box-shadow:0 24px 70px rgba(16,24,40,.16);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-7px) scale(.98);transform-origin:top right;transition:opacity .18s,transform .18s,visibility .18s;z-index:110}
.menu-popover.open{opacity:1;visibility:visible;pointer-events:auto;transform:none}
.menu-heading{padding:10px 12px 9px;border-bottom:1px solid #eef0f3;margin-bottom:5px}
.menu-heading strong{display:block;font-size:13px}
.menu-heading span{display:block;color:var(--muted);font-size:11px;margin-top:2px}
.menu-item{display:flex!important;flex-direction:row!important;align-items:center;gap:11px;width:100%;padding:11px 10px!important;border:0;border-radius:11px;background:transparent;text-align:left;color:var(--ink);cursor:pointer;transition:background .15s,transform .15s}
.menu-item:hover{background:#f4f6fa}
.menu-item:active{transform:scale(.99)}
.menu-item-icon{display:grid;place-items:center;flex:0 0 34px;width:34px;height:34px;border-radius:9px;background:#f1f3f7;color:#344054;font-size:16px;font-weight:800}
.menu-item b{display:block;font-size:13px;line-height:1.25}
.menu-item small{display:block;color:var(--muted);font-size:11px;line-height:1.35;margin-top:2px}
.menu-form{margin:0;padding:0}

/* Buttons */
.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;border-radius:11px;padding:11px 17px;font-size:14px;font-weight:800;cursor:pointer;transition:transform .18s,box-shadow .18s,background .18s,border-color .18s}
.primary{border:1px solid var(--blue);background:var(--blue);color:#fff;box-shadow:0 9px 22px rgba(49,87,213,.18)}
.primary:hover{background:var(--blue-dark);border-color:var(--blue-dark);box-shadow:0 12px 28px rgba(49,87,213,.24);transform:translateY(-1px)}
.secondary{border:1px solid #d7dce5;background:#fff;color:#344054}
.secondary:hover{border-color:#c4cad5;background:#f9fafb;transform:translateY(-1px)}
.full{width:100%;padding:13px 16px}

/* Hero */
.hero{min-height:590px;position:relative;overflow:hidden;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(320px,.85fr);gap:75px;align-items:center;max-width:1180px;margin:auto;padding:90px 24px 80px}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(#dfe3ea55 1px,transparent 1px),linear-gradient(90deg,#dfe3ea55 1px,transparent 1px);background-size:52px 52px;mask-image:linear-gradient(to bottom,black,transparent 90%);pointer-events:none}
.hero-content,.hero-panel{position:relative}
.eyebrow{font-size:11px;letter-spacing:1.9px;font-weight:850;color:var(--blue);margin:0}
.hero h1{font-size:clamp(48px,6.4vw,76px);letter-spacing:-3.4px;line-height:1.02;margin:16px 0 20px;max-width:760px}
.hero h1 span{color:var(--blue)}
.hero-text{font-size:18px;color:var(--muted);max-width:680px;margin:0}
.hero-actions{display:flex;gap:12px;margin-top:32px}
.hero-panel{padding:18px;border:1px solid #dfe3ea;border-radius:20px;background:rgba(255,255,255,.9);box-shadow:0 30px 80px rgba(16,24,40,.12);transform:rotate(2deg)}
.panel-label{font-size:10px;font-weight:850;letter-spacing:1.5px;color:var(--muted);margin:4px 4px 15px}
.mini-card{padding:24px;border:1px solid var(--line);border-radius:15px;background:#fff}
.badge{display:inline-flex;background:var(--soft);color:#344eb8;border-radius:999px;padding:5px 9px;font-size:11px;font-weight:800}
.mini-card h3{font-size:23px;letter-spacing:-.7px;line-height:1.2;margin:18px 0 9px}
.mini-card p{font-size:14px;color:var(--muted);margin:0}
.mini-lines{display:grid;gap:8px;margin-top:24px}
.mini-lines i{height:7px;border-radius:20px;background:#edf0f4}
.mini-lines i:nth-child(2){width:83%}.mini-lines i:nth-child(3){width:62%}
.hero-stat{display:flex;align-items:baseline;gap:9px;padding:19px 7px 4px}
.hero-stat strong{font-size:32px;letter-spacing:-1px}.hero-stat span{font-size:13px;color:var(--muted)}

/* Sections and cards */
.features{max-width:1132px;margin:-18px auto 0;position:relative;display:grid;grid-template-columns:repeat(3,1fr);background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 10px 35px rgba(16,24,40,.04)}
.features article{padding:27px 30px;border-right:1px solid var(--line)}
.features article:last-child{border:0}
.features span{font-size:12px;color:var(--blue);font-weight:850}.features h3{margin:10px 0 5px;font-size:18px}.features p{margin:0;color:var(--muted);font-size:14px}
.content{max-width:1180px;margin:auto;padding:90px 24px}
.library-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:25px}
.library-head h2{font-size:42px;letter-spacing:-1.6px;margin:6px 0}
.library-head>div>p:last-child{margin:0;color:var(--muted)}
.search{display:grid;grid-template-columns:310px 160px 82px;gap:8px;padding:7px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 8px 25px rgba(16,24,40,.05)}
.search input,.search select,.form input,.form textarea,.form select,.category-form input{width:100%;border:1px solid var(--line);border-radius:9px;padding:11px 12px;background:#fff;color:var(--ink);font:inherit;outline:none;transition:border-color .18s,box-shadow .18s}
.search input:focus,.search select:focus,.form input:focus,.form textarea:focus,.form select:focus,.category-form input:focus{border-color:#8fa4ef;box-shadow:0 0 0 4px rgba(49,87,213,.09)}
.search input{border:0;box-shadow:none}.search input:focus{box-shadow:none}
.search button{border:0;border-radius:8px;background:var(--ink);color:#fff;font-weight:800;cursor:pointer;transition:background .18s,transform .18s}
.search button:hover{background:#273142;transform:translateY(-1px)}
.result-bar{display:flex;justify-content:space-between;color:var(--muted);font-size:13px;border-top:1px solid var(--line);padding:17px 0}
.result-bar strong{color:var(--ink)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:22px;transition:.2s}
.card:hover{transform:translateY(-3px);border-color:#cbd2dc;box-shadow:0 16px 42px rgba(16,24,40,.07)}
.card-top{display:flex;justify-content:space-between;align-items:center}.card-id{font-size:11px;color:#98a2b3;font-weight:700}
.card h3{font-size:20px;letter-spacing:-.5px;margin:19px 0 8px}.card p{color:var(--muted);font-size:14px;margin:0;min-height:66px}
.card-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:16px;margin-top:20px;font-size:12px;color:#98a2b3}
.card-bottom a{font-weight:800;color:var(--blue)}.card-bottom b{font-size:16px;margin-left:4px}
.empty{grid-column:1/-1;background:#fff;border:1px dashed #cbd2dc;padding:45px;border-radius:14px;text-align:center}.empty h3{margin:0}.empty p{color:var(--muted)}

/* Feedback and detail */
.flash{max-width:1132px;margin:18px auto -10px;padding:13px 17px;border-radius:10px;font-weight:650;font-size:14px}
.flash.success{background:#ecfdf3;color:#166534}.flash.error{background:#fef2f2;color:#991b1b}
.detail{max-width:900px}.back{display:inline-flex;align-items:center;color:var(--muted);font-weight:750;margin-bottom:30px;transition:color .15s}.back:hover{color:var(--blue)}
.detail-head h1{font-size:48px;letter-spacing:-1.8px;margin:12px 0}.detail-head p{font-size:18px;color:var(--muted)}
.prompt-box{margin-top:35px;background:#151922;border-radius:14px;overflow:hidden;box-shadow:0 20px 50px rgba(16,24,40,.2)}
.prompt-toolbar{display:flex;justify-content:space-between;align-items:center;gap:15px;padding:15px 18px;color:#fff;border-bottom:1px solid #ffffff18}
.copy-btn{background:#fff;color:#171a26;border:0;border-radius:8px;padding:9px 13px;font-weight:850;cursor:pointer;transition:transform .15s,background .15s}.copy-btn:hover{background:#f0f2f5;transform:translateY(-1px)}
.prompt-box pre{white-space:pre-wrap;word-break:break-word;margin:0;padding:24px;color:#e9e9f3;font:14px/1.75 ui-monospace,SFMono-Regular,Menlo,monospace}

/* Auth/forms/admin */
.auth-wrap{min-height:calc(100vh - 150px);display:grid;place-items:center;padding:50px 20px}
.auth-card,.form-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:38px;box-shadow:var(--shadow)}
.auth-card{width:min(440px,100%)}.center{display:flex;justify-content:center}
.auth-card h1{margin:30px 0 4px;font-size:30px;letter-spacing:-1px}.auth-card>p{color:var(--muted);margin-top:0}
.form{display:grid;gap:17px;margin-top:25px}.form label{font-size:14px;font-weight:750}.form input,.form textarea,.form select{margin-top:7px}
.form textarea{min-height:95px;resize:vertical}.content-area{min-height:280px!important;font-family:ui-monospace,monospace}
.admin-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:28px}.admin-head h1{font-size:40px;letter-spacing:-1.5px;margin:5px 0}.admin-head p:not(.eyebrow){color:var(--muted);margin:0}
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-bottom:20px}.stats>div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:21px}.stats span{display:block;color:var(--muted);font-weight:650}.stats strong{display:block;font-size:35px;margin-top:5px}
.panel{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}.panel-head{margin-bottom:15px}.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse;min-width:760px}th{text-align:left;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.7px}
th,td{padding:14px 10px;border-bottom:1px solid var(--line)}td strong,td small{display:block}td small{color:var(--muted);max-width:350px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.actions{display:flex;gap:12px;align-items:center}.actions a{color:var(--blue);font-weight:750;font-size:13px}.danger-link{border:0;background:none;color:var(--danger);font:inherit;font-size:13px;font-weight:750;cursor:pointer}
.category-panel{margin-top:20px}.category-form{display:flex;gap:10px;margin-top:15px;max-width:520px}.form-page{max-width:850px}.form-card{max-width:780px}.form-card h1{font-size:36px;letter-spacing:-1.2px;margin:6px 0}
.notfound{min-height:65vh;display:grid;place-items:center;text-align:center;padding:30px}.notfound h1{font-size:55px;letter-spacing:-2px;margin:8px}.notfound p{color:var(--muted);margin-bottom:28px}
footer{max-width:1132px;margin:auto;display:flex;justify-content:space-between;align-items:end;padding:35px 0;color:var(--muted);font-size:13px;border-top:1px solid var(--line)}
footer strong{display:block;color:var(--ink);font-size:15px}footer span{display:block;margin-top:4px}footer p{margin:0}

@media(max-width:900px){
  .hero{grid-template-columns:1fr;gap:45px;padding-top:65px}.hero-panel{max-width:500px;justify-self:center}
  .library-head{align-items:start;flex-direction:column}.search{width:100%;grid-template-columns:1fr 170px 85px}
  .features{margin:0 18px;grid-template-columns:1fr}.features article{border-right:0;border-bottom:1px solid var(--line)}.features article:last-child{border-bottom:0}
  .grid{grid-template-columns:repeat(2,1fr)}footer{margin:0 24px}
}
@media(max-width:650px){
  .nav{padding:0 16px}.brand{font-size:18px}.brand-mark{width:33px;height:33px}
  .hero{padding:58px 20px 65px}.hero h1{font-size:48px;letter-spacing:-2.5px}.hero-text{font-size:16px}.hero-actions{flex-direction:column}.hero-actions a{width:100%}
  .hero-panel{transform:none}.content{padding:65px 18px}.library-head h2{font-size:36px}
  .search{grid-template-columns:1fr}.search input{border:1px solid var(--line)}.search button{padding:12px}
  .result-bar{gap:10px;flex-direction:column}.grid{grid-template-columns:1fr}.card p{min-height:auto}
  .detail-head h1{font-size:38px}.admin-head{align-items:start;gap:18px;flex-direction:column}.stats{grid-template-columns:1fr}
  .category-form{flex-direction:column}.auth-card,.form-card{padding:25px}footer{margin:0 18px;align-items:start;gap:14px;flex-direction:column}
  .menu-popover{position:fixed;left:12px;right:12px;top:84px;width:auto;transform:translateY(-7px) scale(.98);transform-origin:top center}
  .menu-popover.open{transform:none}
}