/* ============ COODING WITH KANAK — tokens ============ */
:root{
  --ink:#0b0e14;          /* page background */
  --panel:#131826;        /* cards */
  --panel-2:#0f1420;
  --line:#232b3d;
  --text:#e8ecf4;
  --muted:#93a0b4;
  --or:#ff7a18;           /* brand gradient: sunset code */
  --pk:#e33d6f;
  --pu:#8e3dc9;
  --grad:linear-gradient(100deg,var(--or) 0%,var(--pk) 52%,var(--pu) 100%);
  --r:14px;
  --disp:'Space Grotesk',sans-serif;
  --body:'IBM Plex Sans',sans-serif;
  --mono:'JetBrains Mono',monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--ink);color:var(--text);font-family:var(--body);font-size:16px;line-height:1.6;
  background-image:radial-gradient(1200px 500px at 80% -10%,rgba(142,61,201,.14),transparent 60%),
                   radial-gradient(900px 420px at -10% 20%,rgba(255,122,24,.10),transparent 55%);}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--or);outline-offset:2px;border-radius:4px}
.mono{font-family:var(--mono);font-size:.82rem;letter-spacing:.02em}
.muted{color:var(--muted)}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}

/* ============ nav ============ */
.nav{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  gap:1rem;padding:.85rem clamp(1rem,4vw,2.5rem);background:rgba(11,14,20,.82);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line)}
.wordmark{font-family:var(--disp);font-weight:700;font-size:1.02rem;letter-spacing:.06em;white-space:nowrap}
.cursor{color:var(--or);animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.nav-links{display:flex;align-items:center;gap:1.1rem;font-size:.92rem}
.nav-links a{color:var(--muted)} .nav-links a:hover{color:var(--text)}
.nav-yt{color:#fff!important;background:var(--grad);padding:.42rem .9rem;border-radius:999px;font-weight:600;font-size:.85rem}

.announce{background:var(--grad);color:#fff;text-align:center;padding:.55rem 1rem;font-weight:600;font-size:.92rem}

/* ============ layout ============ */
main{max-width:1120px;margin:0 auto;padding:0 clamp(1rem,4vw,2.5rem) 4rem}
.section{margin-top:4.2rem}
.eyebrow{font-family:var(--mono);color:var(--or);font-size:.8rem;margin-bottom:.9rem}
.eyebrow::before{content:'// ';color:var(--muted)}
h2{font-family:var(--disp);font-size:clamp(1.5rem,3vw,2rem);letter-spacing:.01em;margin-bottom:1.4rem}

/* ============ hero ============ */
.hero{padding-top:clamp(3rem,8vw,5.5rem);text-align:left;max-width:820px}
.hero h1{font-family:var(--disp);font-weight:700;font-size:clamp(2.3rem,6.4vw,4.1rem);line-height:1.06;letter-spacing:-.01em}
.hero h1 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{margin-top:1.1rem;font-size:clamp(1rem,2vw,1.18rem);color:var(--muted);max-width:34rem}
.hero-cta{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:1.8rem}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.7rem 1.25rem;border-radius:10px;font-weight:600;
  border:1px solid var(--line);background:var(--panel);color:var(--text);transition:transform .15s ease,border-color .15s ease}
.btn:hover{transform:translateY(-2px);border-color:var(--muted)}
.btn-grad{background:var(--grad);border:none;color:#fff}
.btn-grad:hover{filter:brightness(1.08)}

/* ============ cards / grids ============ */
.grid{display:grid;gap:1.1rem;grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  transition:transform .15s ease,border-color .15s ease;display:flex;flex-direction:column}
.card:hover{transform:translateY(-3px);border-color:#3a4560}
.thumb{position:relative;aspect-ratio:16/9;background:var(--panel-2)}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb .play{position:absolute;inset:0;display:grid;place-items:center;font-size:2.2rem;color:#fff;
  background:rgba(0,0,0,.25);opacity:0;transition:opacity .15s}
.card:hover .play{opacity:1}
.badge{position:absolute;left:.6rem;top:.6rem;font-family:var(--mono);font-size:.7rem;color:#fff;
  background:rgba(0,0,0,.65);padding:.15rem .5rem;border-radius:6px}
.card-body{padding:.9rem 1rem 1.05rem;display:flex;flex-direction:column;gap:.45rem;flex:1}
.card-title{font-weight:600;font-size:.98rem;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{font-family:var(--mono);font-size:.74rem;color:var(--muted);margin-top:auto}
.done-chip{font-family:var(--mono);font-size:.7rem;color:#7ef0a6}

/* course progress */
.pbar{height:6px;border-radius:99px;background:var(--panel-2);overflow:hidden;margin-top:.3rem}
.pbar>span{display:block;height:100%;background:var(--grad);border-radius:99px}

.empty{border:1px dashed var(--line);border-radius:var(--r);padding:2rem;color:var(--muted);text-align:center}
.empty .mono{color:var(--or)}

/* ============ watch page ============ */
.watch{margin-top:2.5rem;display:grid;gap:1.6rem;grid-template-columns:1fr}
@media(min-width:960px){.watch{grid-template-columns:1.7fr 1fr}}
.player-wrap{position:relative;aspect-ratio:16/9;background:#000;border-radius:var(--r);overflow:hidden;border:1px solid var(--line)}
.player-wrap iframe{width:100%;height:100%;border:0}
.watch h1{font-family:var(--disp);font-size:clamp(1.2rem,2.6vw,1.7rem);margin-top:1rem;line-height:1.3}
.cert-panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:1.3rem;align-self:start}
.cert-panel h3{font-family:var(--disp);margin-bottom:.3rem}
.field{margin-top:.9rem}
.field label{display:block;font-family:var(--mono);font-size:.75rem;color:var(--muted);margin-bottom:.35rem}
.field input{width:100%;padding:.65rem .8rem;border-radius:10px;border:1px solid var(--line);
  background:var(--panel-2);color:var(--text);font:inherit}
.field input:focus{border-color:var(--or);outline:none}
.ring-row{display:flex;align-items:center;gap:1rem;margin-top:1.1rem}
.ring{--p:0;width:64px;height:64px;border-radius:50%;flex:none;display:grid;place-items:center;
  background:conic-gradient(var(--or) calc(var(--p)*1%),var(--panel-2) 0);position:relative}
.ring::before{content:'';position:absolute;inset:6px;border-radius:50%;background:var(--panel)}
.ring b{position:relative;font-family:var(--mono);font-size:.8rem}
.cert-status{font-size:.9rem;color:var(--muted)}
.cert-actions{margin-top:1.1rem;display:flex;flex-direction:column;gap:.6rem}
.cert-actions .btn{justify-content:center;width:100%}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.back{display:inline-block;margin-top:1.4rem;font-family:var(--mono);color:var(--muted)}
.back:hover{color:var(--text)}

/* ============ connect ============ */
.links-grid{display:grid;gap:.9rem;grid-template-columns:repeat(auto-fill,minmax(210px,1fr))}
.link-card{display:flex;align-items:center;gap:.85rem;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r);padding:.95rem 1.05rem;transition:transform .15s,border-color .15s}
.link-card:hover{transform:translateY(-2px);border-color:#3a4560}
.link-ic{width:40px;height:40px;flex:none;border-radius:11px;display:grid;place-items:center;
  font-family:var(--mono);font-weight:700;color:#fff;background:var(--grad);font-size:.95rem}
.link-card small{display:block;color:var(--muted);font-size:.76rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:150px}

/* ============ verify ============ */
.verify-box{max-width:520px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:1.6rem;margin-top:2rem}
.vres{margin-top:1rem;font-family:var(--mono);font-size:.85rem;padding:.8rem;border-radius:10px}
.vres.ok{background:rgba(126,240,166,.08);color:#7ef0a6;border:1px solid rgba(126,240,166,.25)}
.vres.bad{background:rgba(227,61,111,.08);color:#ff8fb0;border:1px solid rgba(227,61,111,.3)}

/* ============ footer ============ */
.footer{border-top:1px solid var(--line);margin-top:4rem;padding:1.4rem clamp(1rem,4vw,2.5rem);
  display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;font-size:.88rem;color:var(--muted)}
.footer-right{display:flex;gap:1.2rem}
.footer a:hover{color:var(--text)}
.loading{padding:5rem 0;text-align:center;color:var(--muted)}

@media(max-width:640px){
  .nav-links a:not(.nav-yt){display:none}
  .wordmark{font-size:.9rem}
}

/* ============ v2 add-ons: theme toggle, search, share, reviews, newsletter, toast ============ */
.theme-btn{width:36px;height:36px;border-radius:999px;border:1px solid var(--line);background:var(--panel);
  color:var(--text);font-size:.95rem;line-height:1;flex:none}
.theme-btn:hover{border-color:var(--muted)}

.toast{position:fixed;bottom:1.3rem;left:50%;transform:translateX(-50%) translateY(20px);z-index:99;
  background:var(--grad);color:#fff;padding:.6rem 1.25rem;border-radius:999px;font-weight:600;font-size:.9rem;
  opacity:0;transition:opacity .25s,transform .25s;pointer-events:none;max-width:90vw;text-align:center}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

.search-row{margin-top:2.6rem}
.search-row input{width:100%;max-width:480px;padding:.75rem 1.05rem;border-radius:12px;border:1px solid var(--line);
  background:var(--panel);color:var(--text);font:inherit}
.search-row input:focus{border-color:var(--or);outline:none}

.share-row{display:flex;flex-wrap:wrap;gap:.55rem;margin-top:1rem}
.chip{display:inline-flex;align-items:center;gap:.4rem;padding:.42rem .85rem;border-radius:999px;
  border:1px solid var(--line);background:var(--panel);color:var(--text);font-size:.82rem;font-weight:600;cursor:pointer}
.chip:hover{border-color:var(--muted);transform:translateY(-1px)}

.reviews{margin-top:2rem;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:1.2rem 1.3rem}
.reviews h3{font-family:var(--disp);margin-bottom:.2rem}
.stars{font-size:1.5rem;letter-spacing:.12em;cursor:pointer;user-select:none;line-height:1.2}
.stars span{color:#3a4560;transition:color .1s}
.stars span.on{color:#ffb02e}
.rev-form{display:flex;gap:.6rem;margin-top:.9rem;flex-wrap:wrap}
.rev-form input,.rev-form textarea{flex:1;min-width:180px;padding:.6rem .8rem;border-radius:10px;
  border:1px solid var(--line);background:var(--panel-2);color:var(--text);font:inherit}
.rev-form textarea{min-height:44px;resize:vertical;flex-basis:100%}
.rev{border-top:1px solid var(--line);padding:.75rem 0}
.rev b{font-size:.92rem}
.rev .rev-stars{color:#ffb02e;font-size:.85rem;margin-left:.4rem}
.rev p{color:var(--muted);font-size:.9rem;margin-top:.15rem}

.nl-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:1.5rem;
  display:flex;flex-wrap:wrap;gap:1rem;align-items:center;justify-content:space-between}
.nl-card h3{font-family:var(--disp);font-size:1.15rem}
.nl-card p{color:var(--muted);font-size:.9rem;max-width:30rem}
.nl-form{display:flex;gap:.6rem;flex-wrap:wrap}
.nl-form input{padding:.65rem .9rem;border-radius:10px;border:1px solid var(--line);
  background:var(--panel-2);color:var(--text);font:inherit;min-width:230px}

/* ============ light theme ============ */
html[data-theme="light"]{
  --ink:#f7f5f0; --panel:#ffffff; --panel-2:#f0ece3; --line:#e2dbcf;
  --text:#1b2434; --muted:#5d6a80;
}
html[data-theme="light"] body{
  background-image:radial-gradient(1200px 500px at 80% -10%,rgba(142,61,201,.08),transparent 60%),
                   radial-gradient(900px 420px at -10% 20%,rgba(255,122,24,.07),transparent 55%);}
html[data-theme="light"] .nav{background:rgba(247,245,240,.86)}
html[data-theme="light"] .stars span{color:#d8d0c2}
html[data-theme="light"] .done-chip{color:#178a4c}
html[data-theme="light"] .vres.ok{color:#178a4c;background:rgba(23,138,76,.07);border-color:rgba(23,138,76,.3)}