/* VectraChat — móvil-first, estética fósforo verde de VectraNetwork */
:root{
  --bg:#0b0f0d; --bg-2:#0f1512; --bg-3:#141b18; --bg-4:#1a2320;
  --border:#1e2a25; --border-2:#2a3a33;
  --text:#c9d6d0; --text-2:#8fa39a; --text-3:#5c6d66; --text-head:#eafff6;
  --accent:#3dffc0; --accent-dim:rgba(61,255,192,.12); --danger:#ff5a5a; --warn:#ffb740; --blue:#4a8fff;
  --f-mono:'IBM Plex Mono',ui-monospace,'Cascadia Code',Menlo,Consolas,monospace;
  --f-sans:system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{background:var(--bg);color:var(--text);font-family:var(--f-sans);
  -webkit-font-smoothing:antialiased;overflow:hidden}
.screen{position:fixed;inset:0;display:flex;flex-direction:column}
[hidden]{display:none!important}

/* Botones / campos */
.btn{font-family:var(--f-mono);font-size:.9rem;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;border-radius:10px;padding:.85rem 1rem;cursor:pointer;
  transition:background .15s,border-color .15s,opacity .15s;width:100%}
.btn-primary{background:var(--accent);color:#04140f}
.btn-primary:active{background:#54ffcb}
.btn-primary:disabled{background:var(--text-3);color:var(--bg);opacity:.6}
.btn-ghost{background:transparent;color:var(--accent);border-color:var(--border-2)}
.btn-link{background:none;border:none;color:var(--text-2);font-size:.82rem;padding:.6rem}
.btn-danger{color:var(--danger)}
.field{width:100%;background:var(--bg-3);border:1px solid var(--border-2);border-radius:10px;
  color:var(--text-head);font-family:var(--f-mono);font-size:.92rem;padding:.85rem 1rem;outline:none}
.field:focus{border-color:var(--accent)}
.field-area{resize:none;line-height:1.5}
.feedback{font-family:var(--f-mono);font-size:.78rem;color:var(--warn);min-height:1.2em;margin-top:.4rem;text-align:center}
.hint{color:var(--text-2);font-size:.86rem;line-height:1.55;margin-bottom:.4rem}
.section-title{font-family:var(--f-mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;
  color:var(--text-3);margin:1.6rem 0 .6rem}

/* Onboarding */
.onboard{margin:auto;padding:2rem 1.5rem;max-width:420px;width:100%;text-align:center;
  display:flex;flex-direction:column;gap:1rem}
.brand{font-family:var(--f-mono);font-size:2rem;font-weight:700;color:var(--text-head);letter-spacing:-.02em}
.brand-v{color:var(--accent)} .brand-c{color:var(--accent)}
.tagline{color:var(--text-2);font-size:.95rem;line-height:1.5;margin-bottom:1rem}
.onboard-actions{display:flex;flex-direction:column;gap:.7rem}

/* Topbar / pad */
.topbar{display:flex;align-items:center;gap:.5rem;padding:1rem;background:var(--bg-2);
  border-bottom:1px solid var(--border);font-family:var(--f-mono);font-weight:600;color:var(--text-head);
  padding-top:max(1rem,env(safe-area-inset-top))}
.topbar span{flex:1}
.thread-title{font-size:.82rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.icon-btn{background:none;border:none;color:var(--accent);font-size:1.5rem;line-height:1;
  cursor:pointer;width:2rem;height:2rem;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center}
.icon-btn svg{width:1.3rem;height:1.3rem}
.pad{padding:1.2rem;overflow-y:auto;flex:1}

/* Seed */
.warn-box{background:rgba(255,183,64,.08);border:1px solid rgba(255,183,64,.3);border-radius:10px;
  padding:.9rem;color:var(--warn);font-size:.82rem;line-height:1.55;margin-bottom:1.2rem}
.seed-grid{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:.5rem;
  counter-reset:seed;margin-bottom:1.2rem}
.seed-grid li{counter-increment:seed;background:var(--bg-3);border:1px solid var(--border-2);
  border-radius:8px;padding:.7rem .9rem;font-family:var(--f-mono);font-size:.9rem;color:var(--text-head)}
.seed-grid li::before{content:counter(seed)". ";color:var(--text-3)}
.check{display:flex;align-items:center;gap:.6rem;color:var(--text-2);font-size:.86rem;margin-bottom:1rem;cursor:pointer}
.check input{width:1.1rem;height:1.1rem;accent-color:var(--accent)}

/* App tabs */
.app{padding-bottom:0}
.view{position:absolute;inset:0 0 4.2rem 0;display:flex;flex-direction:column;overflow:hidden}
.tabbar{position:absolute;left:0;right:0;bottom:0;height:4.2rem;display:flex;
  background:var(--bg-2);border-top:1px solid var(--border);z-index:5;
  padding-bottom:env(safe-area-inset-bottom)}
.tab{flex:1;background:none;border:none;color:var(--text-3);font-size:1.3rem;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.25rem}
.tab svg{width:1.4rem;height:1.4rem}
.tab span{font-family:var(--f-mono);font-size:.62rem;letter-spacing:.04em}
.tab.active{color:var(--accent)}
.tab.active svg{filter:drop-shadow(0 0 6px rgba(61,255,192,.45))}

/* Listas */
.list{flex:1;overflow-y:auto;padding:.5rem 0}
.empty{color:var(--text-3);text-align:center;padding:2.5rem 1.5rem;font-size:.88rem;line-height:1.6}
.chat-item{display:flex;align-items:center;gap:.8rem;padding:.9rem 1.1rem;cursor:pointer;border-bottom:1px solid var(--border)}
.chat-item:active{background:var(--bg-2)}
.avatar{width:2.6rem;height:2.6rem;border-radius:50%;background:var(--bg-4);border:1px solid var(--border-2);
  display:flex;align-items:center;justify-content:center;font-family:var(--f-mono);color:var(--accent);font-size:.9rem;flex:0 0 auto}
.chat-meta{flex:1;min-width:0}
.chat-name{font-family:var(--f-mono);font-size:.82rem;color:var(--text-head);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-last{color:var(--text-3);font-size:.78rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-top:.15rem}

/* Mensajes */
.messages{flex:1;overflow-y:auto;padding:1rem;display:flex;flex-direction:column;gap:.5rem}
.bubble{max-width:78%;padding:.6rem .85rem;border-radius:14px;font-size:.9rem;line-height:1.4;word-break:break-word}
.bubble.in{align-self:flex-start;background:var(--bg-3);border-bottom-left-radius:4px}
.bubble.out{align-self:flex-end;background:var(--accent-dim);border:1px solid rgba(61,255,192,.25);border-bottom-right-radius:4px;color:var(--text-head)}
.bubble .when{display:block;font-family:var(--f-mono);font-size:.6rem;color:var(--text-3);margin-top:.3rem}
.composer{display:flex;gap:.5rem;padding:.7rem;border-top:1px solid var(--border);background:var(--bg-2);
  padding-bottom:max(.7rem,env(safe-area-inset-bottom))}
.btn-send{width:auto;padding:.85rem 1.1rem}

/* Wallet */
.balance-card{background:var(--bg-3);border:1px solid var(--border-2);border-radius:14px;
  padding:1.6rem 1.2rem;text-align:center;margin-bottom:1rem}
.balance-num{font-family:var(--f-mono);font-size:2.2rem;font-weight:700;color:var(--accent);text-shadow:0 0 20px rgba(61,255,192,.3)}
.balance-unit{font-family:var(--f-mono);color:var(--text-2);margin-left:.4rem}
.balance-sub{display:block;color:var(--text-3);font-size:.76rem;margin-top:.4rem;font-family:var(--f-mono)}
.tx-row{display:flex;justify-content:space-between;align-items:center;padding:.75rem 0;border-bottom:1px solid var(--border);font-family:var(--f-mono);font-size:.82rem;cursor:pointer}
.tx-row:active{background:var(--bg-2)}
.tx-row .amt.pos{color:var(--accent)} .tx-row .amt.neg{color:var(--danger)}
.tx-row .who{color:var(--text-3);font-size:.72rem;margin-top:.2rem}

/* Detalle de una transacción (modal) */
.tx-detail{display:flex;justify-content:space-between;gap:1rem;padding:.55rem 0;border-bottom:1px solid var(--border);font-size:.82rem}
.tx-detail:last-child{border-bottom:none}
.tx-k{color:var(--text-3);font-family:var(--f-mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;flex:0 0 auto;padding-top:.1rem}
.tx-v{color:var(--text-head);text-align:right;word-break:break-word}
.tx-v .mono,.tx-addrs.mono{font-family:var(--f-mono)}
.tx-addrs{font-size:.74rem;line-height:1.6;text-align:right}
.tx-addrs em{color:var(--accent);font-style:normal}
.tx-sub{display:block;color:var(--text-3);font-family:var(--f-mono);font-size:.66rem}

/* Selector de idioma */
.lang-toggle{display:flex;gap:.5rem;margin-bottom:.4rem}
.lang-opt{flex:1;font-family:var(--f-mono);font-size:.85rem;padding:.7rem;border-radius:10px;
  background:var(--bg-3);border:1px solid var(--border-2);color:var(--text-2);cursor:pointer;
  transition:background .15s,border-color .15s,color .15s}
.lang-opt.active{background:var(--accent-dim);border-color:var(--accent);color:var(--accent)}

/* Minería */
.mine-card{background:var(--bg-3);border:1px solid var(--border-2);border-radius:14px;padding:1rem 1.2rem}
.mine-controls{display:flex;align-items:center;gap:.6rem;margin:.6rem 0}
.mine-controls label{font-family:var(--f-mono);font-size:.78rem;color:var(--text-2);flex:0 0 auto}
.mine-n{width:4.2rem;text-align:center;padding:.6rem .4rem;flex:0 0 auto}
.mine-controls .btn{flex:1;padding:.7rem .6rem}
.mine-stats{font-family:var(--f-mono);font-size:.76rem;color:var(--text-2);line-height:1.7;margin-top:.4rem}
.mine-stats #mine-status{color:var(--accent)}

/* Archivos en el chat */
.attach-btn{align-self:center}
.btn-icon-text{display:flex;align-items:center;justify-content:center;gap:.45rem}
.btn-icon-text svg{width:1.05rem;height:1.05rem}
.bubble.file{min-width:190px}
.file-name{font-family:var(--f-mono);font-size:.8rem;color:var(--text-head);word-break:break-all;
  display:flex;align-items:center;gap:.4rem}
.file-name svg{width:.95rem;height:.95rem;flex:0 0 auto;color:var(--accent)}
.chat-last svg{width:.8rem;height:.8rem;vertical-align:-2px;margin-right:.2rem}
.file-size{font-family:var(--f-mono);font-size:.66rem;color:var(--text-3);margin-top:.15rem}
.file-progress{height:4px;background:var(--bg-4);border-radius:2px;margin-top:.5rem;overflow:hidden}
.file-progress i{display:block;height:100%;background:var(--accent);border-radius:2px;transition:width .4s}
.file-save{margin-top:.55rem;padding:.5rem .8rem;font-size:.78rem;width:100%}
.file-state{font-family:var(--f-mono);font-size:.66rem;color:var(--text-3);margin-top:.35rem}
.file-state.err{color:var(--danger)}

/* Identidad */
.qr{width:220px;height:220px;margin:1rem auto;background:#fff;border-radius:12px;padding:12px;display:flex;align-items:center;justify-content:center}
.qr svg{width:100%;height:100%}
.uri-box{background:var(--bg-3);border:1px solid var(--border-2);border-radius:10px;padding:.85rem;
  font-family:var(--f-mono);font-size:.72rem;color:var(--text-2);word-break:break-all;line-height:1.5;margin-bottom:.7rem}
.uri-box.mono{color:var(--text-head)}

/* Modal / toast */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);display:flex;align-items:center;
  justify-content:center;padding:1.2rem;z-index:20}
.modal-box{background:var(--bg-2);border:1px solid var(--border-2);border-radius:14px;padding:1.4rem;max-width:400px;width:100%}
.modal-title{font-family:var(--f-mono);font-weight:600;color:var(--text-head);margin-bottom:.8rem}
.modal-body{display:flex;flex-direction:column;gap:.6rem;margin-bottom:1rem}
.modal-body label{font-size:.78rem;color:var(--text-2);font-family:var(--f-mono)}
.modal-actions{display:flex;gap:.6rem}
.toast{position:fixed;bottom:5.5rem;left:50%;transform:translateX(-50%);background:var(--bg-4);
  border:1px solid var(--border-2);border-radius:10px;padding:.7rem 1.1rem;font-size:.84rem;color:var(--text-head);
  z-index:30;max-width:88%;text-align:center;box-shadow:0 6px 24px rgba(0,0,0,.5)}

/* ── Biometría (Ajustes + desbloqueo) ─────────────────────────────────────── */
.btn-bio{display:flex;align-items:center;justify-content:center;gap:.55rem}
.btn-bio svg{width:20px;height:20px;flex:none}
.bio-state{font-family:var(--f-mono);font-size:.78rem;color:var(--text-2);margin:.5rem 0 .7rem}
.bio-state.on{color:var(--accent)}
#bio-pass-row{display:flex;flex-direction:column;gap:.5rem;margin-bottom:.7rem}
#unlock-pass-row{display:flex;flex-direction:column;gap:1rem}
.hint-warn{color:var(--text-3);font-size:.78rem;margin-top:.7rem}

/* ── Tutorial de bienvenida ───────────────────────────────────────────────── */
.tut-overlay{position:fixed;inset:0;background:rgba(4,10,8,.86);backdrop-filter:blur(3px);
  display:flex;align-items:center;justify-content:center;padding:1.2rem;z-index:50}
.tut-card{background:var(--bg-2);border:1px solid var(--border-2);border-radius:16px;
  padding:1.6rem 1.4rem 1.2rem;max-width:420px;width:100%;
  display:flex;flex-direction:column;gap:1rem;
  box-shadow:0 18px 50px rgba(0,0,0,.5)}
.tut-body{min-height:9.5rem;display:flex;flex-direction:column;gap:.7rem;
  animation:tutIn .22s ease}
@keyframes tutIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.tut-title{font-family:var(--f-mono);font-size:1.05rem;font-weight:700;color:var(--text-head);
  line-height:1.35;letter-spacing:-.01em}
.tut-text{color:var(--text);font-size:.92rem;line-height:1.6}
.tut-text b{color:var(--accent);font-weight:600}
.tut-text i{color:var(--text-head);font-style:normal;font-family:var(--f-mono);font-size:.86rem}
.tut-dots{display:flex;gap:.4rem;justify-content:center}
.tut-dot{width:7px;height:7px;border-radius:50%;background:var(--border-2);transition:background .2s,width .2s}
.tut-dot.active{background:var(--accent);width:18px;border-radius:4px}
.tut-actions{display:flex;gap:.7rem;align-items:center}
.tut-actions .btn-link{width:auto;flex:none}
.tut-actions .btn-primary{flex:1}
@media (prefers-reduced-motion:reduce){.tut-body{animation:none}}