:root {
  --bg:      #0c0f14;
  --surface: #141820;
  --sur2:    #1c2230;
  --sur3:    #222a3a;
  --border:  #252d3d;
  --border2: #2e3a50;
  --accent:  #4fffb0;
  --a2:      #00c4ff;
  --a3:      #ff6b6b;
  --a4:      #ffb86c;
  --a5:      #c084fc;
  --text:    #e8edf5;
  --muted:   #6b7a99;
  --muted2:  #4a5570;
  --nav-h:   64px;
  --radius:  12px;
  --ease:    cubic-bezier(.4,0,.2,1);
  --spring:  cubic-bezier(.34,1.56,.64,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:'DM Sans',sans-serif;font-size:15px;line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased}

/* ── NAV ── */
/* nav{
  position:sticky;top:0;z-index:100;height:var(--nav-h);
  background:rgba(12,15,20,.88);backdrop-filter:blur(18px);
  border-bottom:1px solid var(--border);
  display:flex;align-items:center;
  padding:0 clamp(1rem,4vw,2.5rem);gap:1.5rem;
}
.logo{font-family:'Space Mono',monospace;font-weight:700;font-size:1.05rem;letter-spacing:-.02em;color:var(--accent);text-decoration:none;display:flex;align-items:center;gap:.45rem;flex-shrink:0}
.logo span{color:var(--text)}
.nav-links{display:flex;gap:1.4rem;margin-left:auto}
.nav-links a{color:var(--muted);text-decoration:none;font-size:.875rem;font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--text)} */
.btn{display:inline-flex;align-items:center;gap:.4rem;background:var(--accent);color:#000;font-family:'Space Mono',monospace;font-size:.78rem;font-weight:700;padding:.5rem 1.1rem;border-radius:6px;border:none;cursor:pointer;text-decoration:none;transition:opacity .15s,transform .12s;white-space:nowrap}
.btn:hover{opacity:.88;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn.secondary{background:transparent;color:var(--accent);border:1.5px solid var(--accent)}
.btn.secondary:hover{background:rgba(79,255,176,.08)}
.btn.ghost{background:transparent;color:var(--muted);border:1.5px solid var(--border)}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent)}

/* ── HERO ── */
.hero{text-align:center;padding:4rem clamp(1rem,5vw,2rem) 3rem;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 50% 0%,rgba(79,255,176,.07) 0%,transparent 70%);pointer-events:none}
.badge{display:inline-flex;align-items:center;gap:.4rem;background:rgba(79,255,176,.1);border:1px solid rgba(79,255,176,.25);color:var(--accent);font-family:'Space Mono',monospace;font-size:.72rem;padding:.28rem .8rem;border-radius:99px;margin-bottom:1.2rem;letter-spacing:.04em}
.hero h1{font-family:'Space Mono',monospace;font-size:clamp(1.6rem,4vw,2.6rem);font-weight:700;line-height:1.2;letter-spacing:-.03em;margin-bottom:.8rem}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero p{color:var(--muted);max-width:560px;margin:0 auto 2rem;font-size:1rem;font-weight:300}

/* ── MAIN ── */
.main-wrap{max-width:1200px;margin:0 auto;padding:0 clamp(1rem,4vw,2rem) 5rem}

/* ── PANEL ── */
.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.panel-head{padding:.85rem 1.25rem;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:.6rem;font-family:'Space Mono',monospace;font-size:.75rem;font-weight:700;letter-spacing:.04em;color:var(--muted);text-transform:uppercase;flex-wrap:wrap}
.panel-head .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex-shrink:0}
.panel-head .ph-right{margin-left:auto;display:flex;gap:.5rem;align-items:center;flex-wrap:wrap}
.panel-body{padding:1.4rem 1.25rem}

/* ── LAYOUT ── */
.builder-grid{display:grid;grid-template-columns:1fr 420px;gap:1.5rem;margin-bottom:1.5rem}
@media(max-width:960px){.builder-grid{grid-template-columns:1fr}}

/* ── SECTION TABS ── */
.section-tabs{display:flex;gap:.4rem;margin-bottom:1.25rem;flex-wrap:wrap}
.stab{
  display:flex;align-items:center;gap:.35rem;
  padding:.38rem .85rem;border-radius:6px;
  border:1.5px solid var(--border);background:transparent;
  color:var(--muted);font-family:'Space Mono',monospace;
  font-size:.7rem;font-weight:700;cursor:pointer;
  transition:all .18s;letter-spacing:.02em;
}
.stab:hover{border-color:var(--border2);color:var(--text)}
.stab.active{border-color:var(--accent);background:rgba(79,255,176,.08);color:var(--accent)}
.stab .stab-dot{width:6px;height:6px;border-radius:50%;background:currentColor;flex-shrink:0}

/* ── FORM ── */
.form-section{display:none}
.form-section.active{display:block}
.field{margin-bottom:1rem}
.field label{display:block;margin-bottom:.32rem;font-size:.8rem;font-weight:500;color:var(--muted);letter-spacing:.02em}
.field label .req{color:var(--a3);margin-left:.2rem}
.field label .hint{font-size:.7rem;color:var(--muted2);font-weight:400;margin-left:.35rem}
.field input,.field select,.field textarea{
  width:100%;background:var(--sur2);border:1px solid var(--border);
  border-radius:7px;color:var(--text);font-family:'DM Sans',sans-serif;
  font-size:.88rem;padding:.58rem .88rem;outline:none;
  transition:border-color .18s,box-shadow .18s;-webkit-appearance:none;
}
.field select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7a99' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right .75rem center;
  padding-right:2.2rem;cursor:pointer;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent)}
.field input::placeholder,.field textarea::placeholder{color:#2e3a52}
.field textarea{resize:vertical;min-height:72px;line-height:1.55}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}
@media(max-width:520px){.two-col{grid-template-columns:1fr}}

/* char counter */
.field-footer{display:flex;justify-content:space-between;align-items:center;margin-top:.28rem}
.char-count{font-family:'Space Mono',monospace;font-size:.65rem;color:var(--muted2)}
.char-count.warn{color:var(--a4)}
.char-count.over{color:var(--a3)}
.field-tip{font-size:.7rem;color:var(--muted2);line-height:1.4}

/* error state */
.field.field-error input,.field.field-error select,.field.field-error textarea{border-color:var(--a3)!important;box-shadow:0 0 0 2px rgba(255,107,107,.12)}
.field .err-msg{display:none;font-size:.72rem;color:var(--a3);margin-top:.28rem}
.field.field-error .err-msg{display:block}

/* ── GENERATE BTN ── */
.gen-btn{
  width:100%;background:var(--accent);color:#000;
  font-family:'Space Mono',monospace;font-size:.82rem;font-weight:700;
  padding:.82rem 1rem;border-radius:8px;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;gap:.5rem;
  transition:opacity .15s,transform .12s var(--spring);
  letter-spacing:.02em;margin-top:1.25rem;
}
.gen-btn:hover{opacity:.88;transform:translateY(-1px)}
.gen-btn:active{transform:translateY(0)}

/* ── VALIDATION ALERT ── */
.v-alert{
  background:rgba(255,107,107,.08);border:1px solid rgba(255,107,107,.3);
  border-radius:9px;padding:.85rem 1rem;margin-bottom:1rem;
  animation:alertIn .3s var(--ease);
}
@keyframes alertIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}
.v-alert-head{display:flex;align-items:center;gap:.5rem;margin-bottom:.4rem}
.v-alert-title{font-family:'Space Mono',monospace;font-size:.73rem;font-weight:700;color:var(--a3)}
.v-alert ul{list-style:none;padding:0}
.v-alert ul li{font-size:.78rem;color:var(--text);line-height:1.5;padding:.1rem 0;display:flex;align-items:baseline;gap:.4rem}
.v-alert ul li::before{content:'›';color:var(--a3);font-weight:700;flex-shrink:0}
.v-alert-close{margin-left:auto;background:none;border:none;color:var(--muted);cursor:pointer;font-size:.82rem;padding:.1rem .25rem;flex-shrink:0}

/* ── RIGHT PANEL STICKY ── */
.right-col{display:flex;flex-direction:column;gap:1.25rem}
.sticky-col{position:sticky;top:calc(var(--nav-h) + 1rem)}

/* ── LIVE PREVIEW ── */
/* Google SERP preview */
.serp-preview{background:#fff;border-radius:10px;padding:1.25rem 1.4rem;font-family:'Arial',sans-serif}
.serp-url{font-size:.75rem;color:#202124;margin-bottom:.18rem;display:flex;align-items:center;gap:.4rem;word-break:break-all}
.serp-favicon{width:16px;height:16px;background:var(--accent);border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:.55rem;font-weight:700;color:#000;flex-shrink:0}
.serp-title{font-size:1.15rem;color:#1a0dab;line-height:1.3;margin-bottom:.22rem;cursor:pointer;font-weight:400}
.serp-title:hover{text-decoration:underline}
.serp-desc{font-size:.83rem;color:#4d5156;line-height:1.55}
.serp-placeholder{color:#999;font-style:italic;font-size:.82rem}
.serp-warn{font-size:.68rem;margin-top:.3rem;padding:.2rem .5rem;border-radius:4px;display:inline-block}
.serp-warn.over{background:#fce8e6;color:#c5221f}
.serp-warn.short{background:#e8f0fe;color:#1967d2}

/* OG / Twitter card preview */
.social-card{border-radius:10px;overflow:hidden;border:1px solid var(--border)}
.social-card-img{width:100%;height:120px;background:linear-gradient(135deg,var(--sur2) 0%,var(--sur3) 100%);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.social-card-img .img-placeholder{color:var(--muted2);font-size:.78rem;font-family:'Space Mono',monospace;text-align:center;padding:1rem}
.social-card-img img{width:100%;height:100%;object-fit:cover;display:none}
.social-card-body{background:#fff;padding:.85rem 1rem}
.social-card-site{font-size:.68rem;color:#6b7a99;text-transform:uppercase;letter-spacing:.04em;margin-bottom:.2rem;font-family:'Arial',sans-serif}
.social-card-title{font-size:.9rem;font-weight:700;color:#1c1e21;line-height:1.25;margin-bottom:.22rem;font-family:'Arial',sans-serif}
.social-card-desc{font-size:.78rem;color:#606770;line-height:1.4;font-family:'Arial',sans-serif}

/* preview tabs */
.prev-tabs{display:flex;border-bottom:1px solid var(--border);margin-bottom:0}
.ptab{background:none;border:none;padding:.6rem 1rem;font-family:'Space Mono',monospace;font-size:.68rem;font-weight:700;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px;transition:color .15s,border-color .15s;letter-spacing:.03em}
.ptab.active{color:var(--accent);border-bottom-color:var(--accent)}
.prev-pane{display:none;padding:1rem 1.1rem}
.prev-pane.active{display:block}

/* ── OUTPUT ── */
.output-panel{margin-bottom:1.5rem}
.code-wrap{background:#0a0d12;border:1px solid var(--border);border-radius:8px;overflow:hidden}
.code-wrap pre{font-family:'Space Mono',monospace;font-size:.72rem;line-height:1.75;color:#a8c4a2;padding:1.15rem;overflow:auto;max-height:460px;white-space:pre}
.placeholder-txt{color:#2a3348;font-style:italic}

/* syntax colours */
.t-comment{color:#3a4460;font-style:italic}
.t-tag{color:#7ec8c8}
.t-attr{color:#9fb4ff}
.t-val{color:var(--accent)}
.t-url{color:var(--a2)}
.t-str{color:#a8c4a2}

.output-actions{display:flex;gap:.6rem;flex-wrap:wrap;margin-top:.85rem}
.output-actions .btn{flex:1;min-width:120px;justify-content:center;font-size:.76rem}

/* ready badge */
.ready-badge{display:flex;align-items:center;gap:.45rem;font-family:'Space Mono',monospace;font-size:.7rem;margin-bottom:.75rem}
.ready-badge .rb-dot{width:7px;height:7px;border-radius:50%;background:var(--muted2)}
.ready-badge.ready .rb-dot{background:var(--accent)}
.ready-badge.ready{color:var(--accent)}
.ready-badge:not(.ready){color:var(--muted)}

/* ── COUNT CHIPS ── */
.chips-row{display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:1.5rem}
.chip{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:.5rem .85rem;display:flex;flex-direction:column;align-items:center;flex:1;min-width:80px;transition:border-color .2s}
.chip.has-data{border-color:rgba(79,255,176,.25)}
.chip .cv{font-family:'Space Mono',monospace;font-size:1.2rem;font-weight:700;color:var(--accent);line-height:1}
.chip .cl{font-size:.67rem;color:var(--muted);margin-top:.15rem}

/* ── FEATURES ── */
.features-section{margin-top:4rem}
.section-label{font-family:'Space Mono',monospace;font-size:.72rem;letter-spacing:.1em;color:var(--accent);text-transform:uppercase;margin-bottom:.6rem}
.section-title{font-family:'Space Mono',monospace;font-size:clamp(1.2rem,2.5vw,1.6rem);font-weight:700;margin-bottom:.6rem;letter-spacing:-.02em}
.section-sub{color:var(--muted);font-weight:300;max-width:420px;margin-bottom:2.5rem}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1rem}
.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.4rem 1.25rem;transition:border-color .2s,transform .2s;position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;inset:0;opacity:0;background:radial-gradient(circle at 30% 30%,rgba(79,255,176,.05),transparent 60%);transition:opacity .3s}
.feature-card:hover{border-color:rgba(79,255,176,.3);transform:translateY(-2px)}
.feature-card:hover::before{opacity:1}
.feature-card .icon{font-size:1.6rem;margin-bottom:.75rem;display:block}
.feature-card h3{font-family:'Space Mono',monospace;font-size:.88rem;font-weight:700;margin-bottom:.4rem}
.feature-card p{color:var(--muted);font-size:.85rem;font-weight:300}

/* ── FOOTER ── */
footer{border-top:1px solid var(--border);padding:1.4rem clamp(1rem,4vw,2.5rem);text-align:center;color:var(--muted);font-size:.8rem;display:flex;align-items:center;justify-content:center;gap:.5rem;flex-wrap:wrap}
footer a{color:var(--accent);text-decoration:none}
footer .sep{color:var(--border2)}

/* ── TOAST ── */
.toast{position:fixed;bottom:1.5rem;right:1.5rem;background:var(--accent);color:#000;font-family:'Space Mono',monospace;font-size:.75rem;font-weight:700;padding:.6rem 1.2rem;border-radius:8px;transform:translateY(80px);opacity:0;transition:all .3s var(--spring);pointer-events:none;z-index:999}
.toast.show{transform:translateY(0);opacity:1}

/* ── FALLBACK COPY BOX ── */
.fallback-box{position:fixed;bottom:5rem;left:50%;transform:translateX(-50%);background:var(--surface);border:1px solid var(--accent);border-radius:10px;padding:1rem 1.1rem;z-index:9999;max-width:90vw;width:520px;box-shadow:0 12px 40px rgba(0,0,0,.6)}
.fallback-box textarea{width:100%;height:110px;background:var(--sur2);border:1px solid var(--border);border-radius:6px;color:var(--a2);font-family:'Space Mono',monospace;font-size:.7rem;padding:.6rem;resize:none;outline:none;line-height:1.65;cursor:text;margin-top:.5rem}

::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:99px}

@media(max-width:600px){
  .nav-links{display:none}
  .output-actions .btn{min-width:0;font-size:.7rem;padding:.45rem .6rem}
}