/* ClusterLens design system — dark-first, developer aesthetic. No framework. */
:root{
  --k8s:#326CE5; --k8s-2:#4d82ff; --accent:#22d3ee; --green:#34d399; --amber:#fbbf24;
  --red:#f87171; --purple:#a78bfa;
  --bg:#0b0e14; --bg-2:#11151f; --bg-3:#171c28; --panel:#141926; --line:#232b3d;
  --fg:#e6ebf5; --fg-2:#9aa7bd; --fg-3:#66738c;
  --radius:14px; --mono:ui-monospace,'SF Mono','JetBrains Mono',Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,'Segoe UI',Inter,Roboto,Helvetica,Arial,sans-serif;
  --shadow:0 10px 40px -12px rgba(0,0,0,.6);
}
:root[data-theme="light"]{
  --bg:#f6f8fc; --bg-2:#eef2f9; --bg-3:#e6ecf6; --panel:#ffffff; --line:#dce3ef;
  --fg:#0e1524; --fg-2:#475267; --fg-3:#7d8aa3; --shadow:0 10px 30px -14px rgba(20,40,80,.22);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);background:var(--bg);color:var(--fg);line-height:1.55;
  -webkit-font-smoothing:antialiased;font-size:16px}
a{color:inherit;text-decoration:none}
h1,h2,h3{line-height:1.15;margin:0 0 .4em;letter-spacing:-.02em}
h1{font-size:clamp(2.1rem,5vw,3.6rem);font-weight:800}
h2{font-size:clamp(1.6rem,3.5vw,2.4rem);font-weight:750}
h3{font-size:1.15rem;font-weight:650}
p{color:var(--fg-2);margin:0 0 1rem}
code{font-family:var(--mono);font-size:.9em}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.7rem 1.2rem;border-radius:10px;
  font-weight:650;font-size:.95rem;cursor:pointer;border:1px solid transparent;transition:.15s;white-space:nowrap}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn-primary{background:linear-gradient(135deg,var(--k8s),var(--k8s-2));color:#fff;box-shadow:0 6px 20px -6px rgba(50,108,229,.6)}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.08)}
.btn-ghost{background:var(--bg-3);color:var(--fg);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--k8s-2);color:var(--fg)}
.btn-lg{padding:.9rem 1.6rem;font-size:1.05rem}
.muted{color:var(--fg-3)}

/* header */
header.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(12px);
  background:color-mix(in srgb,var(--bg) 82%,transparent);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:1rem;height:62px}
.logo{display:flex;align-items:center;gap:.55rem;font-weight:800;font-size:1.12rem;letter-spacing:-.02em}
.logo .mark{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--k8s),var(--accent));
  display:grid;place-items:center;color:#fff;box-shadow:0 4px 14px -4px rgba(50,108,229,.7)}
.nav-links{display:flex;gap:1.4rem;margin-left:auto;align-items:center}
.nav-links a{color:var(--fg-2);font-weight:550;font-size:.94rem}
.nav-links a:hover{color:var(--fg)}
.icon-btn{width:38px;height:38px;border-radius:9px;border:1px solid var(--line);background:var(--bg-3);
  color:var(--fg-2);cursor:pointer;display:grid;place-items:center}
.icon-btn:hover{color:var(--fg);border-color:var(--k8s-2)}
@media(max-width:720px){.nav-links a.hide-sm{display:none}}

/* hero */
.hero{position:relative;padding:76px 0 40px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:
  radial-gradient(600px 300px at 75% -10%,rgba(50,108,229,.20),transparent 70%),
  radial-gradient(500px 260px at 10% 10%,rgba(34,211,238,.10),transparent 70%);z-index:-1}
.badge{display:inline-flex;align-items:center;gap:.45rem;padding:.32rem .8rem;border-radius:999px;
  background:var(--bg-3);border:1px solid var(--line);font-size:.82rem;color:var(--fg-2);font-weight:550;margin-bottom:1.2rem}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green)}
.hero h1{max-width:16ch}
.hero .lede{font-size:1.2rem;max-width:56ch;color:var(--fg-2);margin:.6rem 0 1.6rem}
.hero-cta{display:flex;gap:.8rem;flex-wrap:wrap;align-items:center}
.trust{display:flex;gap:1.4rem;flex-wrap:wrap;margin-top:1.8rem;color:var(--fg-3);font-size:.88rem}
.trust b{color:var(--fg)}
.grid-2{display:grid;grid-template-columns:1.05fr .95fr;gap:2.4rem;align-items:center}
@media(max-width:860px){.grid-2{grid-template-columns:1fr}}

/* terminal mock */
.term{background:#0a0d13;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;font-family:var(--mono)}
.term-bar{display:flex;align-items:center;gap:.5rem;padding:.6rem .8rem;background:#0f131c;border-bottom:1px solid var(--line)}
.term-bar .d{width:11px;height:11px;border-radius:50%}
.d.r{background:#ff5f57}.d.y{background:#febc2e}.d.g{background:#28c840}
.term-bar .t{margin-left:.6rem;color:var(--fg-3);font-size:.78rem}
.term-body{padding:16px;font-size:.82rem;line-height:1.7;color:#c9d4e5;min-height:230px}
.term-body .c-comment{color:#5b6b85}.term-body .c-key{color:#7fb4ff}.term-body .c-str{color:#9ae6b4}
.term-body .c-warn{color:var(--amber)}.term-body .c-err{color:var(--red)}.term-body .c-ok{color:var(--green)}

/* sections */
section{padding:64px 0}
.sec-head{text-align:center;max-width:60ch;margin:0 auto 2.6rem}
.sec-head p{font-size:1.08rem}
.eyebrow{color:var(--accent);font-weight:700;font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;margin-bottom:.6rem}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
@media(max-width:820px){.features{grid-template-columns:1fr}}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem}
.card .ic{width:44px;height:44px;border-radius:11px;display:grid;place-items:center;margin-bottom:1rem;color:#fff}
.card h3{margin-bottom:.4rem}.card p{margin:0;font-size:.95rem}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;counter-reset:s}
@media(max-width:820px){.steps{grid-template-columns:1fr 1fr}}
.step{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:1.2rem;position:relative}
.step .n{font-family:var(--mono);color:var(--k8s-2);font-weight:800;font-size:1.4rem}

/* pricing */
.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;align-items:stretch}
@media(max-width:820px){.pricing{grid-template-columns:1fr}}
.plan{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.7rem;display:flex;flex-direction:column}
.plan.pop{border-color:var(--k8s);box-shadow:0 0 0 1px var(--k8s),0 14px 40px -18px rgba(50,108,229,.6);position:relative}
.plan.pop::before{content:"Most popular";position:absolute;top:-11px;left:50%;transform:translateX(-50%);
  background:linear-gradient(135deg,var(--k8s),var(--k8s-2));color:#fff;font-size:.72rem;font-weight:700;padding:.25rem .8rem;border-radius:999px}
.plan .price{font-size:2.4rem;font-weight:800;margin:.3rem 0;letter-spacing:-.02em}
.plan .price small{font-size:.9rem;color:var(--fg-3);font-weight:500}
.plan .usd{color:var(--fg-3);font-size:.86rem}
.plan ul{list-style:none;padding:0;margin:1.1rem 0;flex:1}
.plan li{padding:.4rem 0;display:flex;gap:.55rem;align-items:flex-start;font-size:.93rem;color:var(--fg-2)}
.plan li svg{flex:none;color:var(--green);margin-top:3px}
.plan li.no{color:var(--fg-3)}.plan li.no svg{color:var(--fg-3)}

/* playground */
.pg{display:grid;grid-template-columns:280px 1fr 340px;gap:14px;height:calc(100vh - 62px);padding:14px}
@media(max-width:1100px){.pg{grid-template-columns:1fr;height:auto;overflow:visible}}
.pg-col{background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;min-height:0}
.pg-col h4{margin:0;padding:.85rem 1rem;border-bottom:1px solid var(--line);font-size:.82rem;text-transform:uppercase;letter-spacing:.06em;color:var(--fg-3);display:flex;align-items:center;gap:.5rem}
.lab-list{overflow:auto;padding:.5rem}
.lab-item{padding:.6rem .7rem;border-radius:9px;cursor:pointer;display:flex;gap:.6rem;align-items:center;font-size:.9rem}
.lab-item:hover{background:var(--bg-3)}
.lab-item.active{background:var(--bg-3);box-shadow:inset 0 0 0 1px var(--k8s)}
.lab-item .ln{font-family:var(--mono);color:var(--fg-3);font-size:.78rem;width:1.6rem}
.lab-item .st{margin-left:auto;font-size:.9rem}
.lab-item.locked{opacity:.55}
.editor-wrap{flex:1;display:flex;flex-direction:column;min-height:340px}
.editor{flex:1;width:100%;background:#0a0d13;color:#d6e0f0;border:0;resize:none;padding:14px;font-family:var(--mono);
  font-size:13px;line-height:1.6;outline:none;tab-size:2;min-height:300px}
.toolbar{display:flex;gap:.5rem;padding:.6rem;border-top:1px solid var(--line);flex-wrap:wrap;align-items:center}
.cluster{overflow:auto;padding:.8rem;font-size:.86rem}
.k-obj{background:var(--bg-3);border:1px solid var(--line);border-radius:9px;padding:.6rem .7rem;margin-bottom:.55rem}
.k-obj .kind{font-family:var(--mono);font-size:.72rem;color:var(--accent);text-transform:uppercase;letter-spacing:.05em}
.k-obj .name{font-weight:650}
.pods{display:flex;gap:.4rem;flex-wrap:wrap;margin-top:.5rem}
.pod{font-family:var(--mono);font-size:.7rem;padding:.2rem .5rem;border-radius:6px;border:1px solid var(--line);display:flex;gap:.35rem;align-items:center}
.pod .s{width:7px;height:7px;border-radius:50%}
.s-Running{background:var(--green)}.s-Pending{background:var(--amber)}
.s-CrashLoopBackOff{background:var(--red)}.s-ContainerCreating{background:var(--k8s-2)}
.s-Failed{background:var(--red)}.s-Completed{background:var(--fg-3)}
.feedback{padding:.8rem 1rem;border-top:1px solid var(--line);font-size:.9rem;overflow:auto;max-height:40%}
.fb-item{display:flex;gap:.5rem;padding:.35rem 0;align-items:flex-start}
.fb-item.err{color:var(--red)}.fb-item.warn{color:var(--amber)}.fb-item.ok{color:var(--green)}.fb-item.info{color:var(--fg-2)}
.fb-item code{background:var(--bg-3);padding:.05rem .3rem;border-radius:4px}
.goal-banner{padding:.8rem 1rem;background:var(--bg-3);border-bottom:1px solid var(--line);font-size:.9rem}
.goal-banner .g{color:var(--fg)}
.tag{font-size:.68rem;padding:.12rem .45rem;border-radius:5px;font-weight:650;text-transform:uppercase;letter-spacing:.04em}
.tag.free{background:rgba(52,211,153,.15);color:var(--green)}
.tag.pro{background:rgba(167,139,250,.15);color:var(--purple)}
.progress-bar{height:6px;background:var(--bg-3);border-radius:99px;overflow:hidden;margin:.4rem 0}
.progress-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--k8s),var(--accent))}

/* modal */
.modal-bg{position:fixed;inset:0;background:rgba(4,7,12,.7);backdrop-filter:blur(4px);z-index:100;display:grid;place-items:center;padding:20px}
.modal{background:var(--panel);border:1px solid var(--line);border-radius:16px;max-width:440px;width:100%;padding:1.8rem;box-shadow:var(--shadow)}
.modal h3{font-size:1.4rem}
.input{width:100%;padding:.7rem .9rem;border-radius:9px;border:1px solid var(--line);background:var(--bg-3);color:var(--fg);font-size:.95rem;font-family:inherit}
.input:focus{outline:2px solid var(--k8s);border-color:transparent}
.hidden{display:none!important}

/* footer */
footer{border-top:1px solid var(--line);padding:36px 0;color:var(--fg-3);font-size:.9rem}
.foot-grid{display:flex;justify-content:space-between;gap:2rem;flex-wrap:wrap}
.foot-grid a{color:var(--fg-3)}.foot-grid a:hover{color:var(--fg)}

/* certificate */
.cert{background:linear-gradient(135deg,#0f1420,#141b2b);border:1px solid var(--k8s);border-radius:16px;padding:2.4rem;text-align:center;max-width:620px;margin:2rem auto;box-shadow:var(--shadow)}
.cert .seal{width:64px;height:64px;margin:0 auto 1rem;border-radius:50%;background:linear-gradient(135deg,var(--k8s),var(--accent));display:grid;place-items:center;color:#fff}
.cert .nm{font-size:1.8rem;font-weight:800;margin:.4rem 0;letter-spacing:-.02em}
.cert .id{font-family:var(--mono);color:var(--fg-3);font-size:.82rem;margin-top:1rem}
.toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);background:var(--bg-3);border:1px solid var(--line);
  color:var(--fg);padding:.7rem 1.1rem;border-radius:10px;box-shadow:var(--shadow);z-index:200;font-size:.92rem}
.spin{width:16px;height:16px;border:2px solid var(--fg-3);border-top-color:var(--fg);border-radius:50%;animation:sp .7s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.view{display:none}.view.active{display:block}