/* ============================================================
   ChatFlow by Kirawuan — estilos del panel y la landing.
   Mismos colores y tipografía que kirawuan.com (claro / oscuro).
   ============================================================ */
:root,html[data-theme="light"]{
  --paper:#f5f7fb;--card:#fff;--ink:#12172b;--muted:#565d75;--faint:#8a90a6;
  --line:rgba(15,23,42,.10);--line-2:rgba(15,23,42,.18);
  --accent:#1d4ed8;--accent-d:#1739a6;--tint:rgba(29,78,216,.08);
  --teal:#0f8f6f;--teal-tint:rgba(15,143,111,.09);
  --danger:#b42318;--ok:#067647;--code:#0f172a;
  --shadow:0 1px 2px rgba(15,23,42,.04),0 6px 18px rgba(15,23,42,.05);
  --r-sm:8px;--r:14px;--r-lg:22px;
  --font:'Inter',system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,Menlo,Consolas,monospace;
}
html[data-theme="dark"]{
  --paper:#0a0817;--card:#16132c;--ink:#f5f3fb;--muted:#aca7c9;--faint:#716c92;
  --line:rgba(255,255,255,.09);--line-2:rgba(255,255,255,.18);
  --accent:#5b8def;--accent-d:#3b6fd6;--tint:rgba(91,141,239,.14);
  --teal:#16b388;--teal-tint:rgba(22,179,136,.14);
  --danger:#f97066;--ok:#47cd89;--code:#05040d;--shadow:none;
}
*{box-sizing:border-box}
body{margin:0;font:15px/1.6 var(--font);color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased;display:flex;flex-direction:column;min-height:100vh}
a{color:var(--accent)}
img{max-width:100%}

/* ---------- Cabecera ---------- */
.nav{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--card) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-in{max-width:1140px;margin:0 auto;padding:12px 24px;display:flex;justify-content:space-between;align-items:center;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--ink);text-decoration:none;letter-spacing:-.02em;line-height:1.1}
.logo small{display:block;font-family:var(--mono);font-size:10.5px;font-weight:500;letter-spacing:.06em;color:var(--faint);text-transform:uppercase}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px}
.nav nav{display:flex;gap:20px;align-items:center}
.nav nav a{color:var(--muted);text-decoration:none;font-weight:500;font-size:14.5px;display:inline-flex;gap:7px;align-items:center}
.nav nav a:hover{color:var(--ink)}
.nav nav a.btn{color:#fff}
.theme-btn{width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:var(--paper);color:var(--muted);cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0;font-size:14px}
.theme-btn:hover{border-color:var(--accent);color:var(--accent);background:var(--paper)}

/* ---------- Estructura ---------- */
main{width:100%;max-width:1140px;margin:0 auto;padding:36px 24px 72px;flex:1}
main.wide{max-width:none;padding:0}
h1{font-size:28px;letter-spacing:-.02em;margin:0 0 6px;line-height:1.2}
h2{font-size:18px;margin:0 0 12px;letter-spacing:-.01em}
.sub{color:var(--muted);margin:0 0 24px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;margin-bottom:18px;box-shadow:var(--shadow)}
.grid{display:grid;grid-template-columns:1fr 400px;gap:24px;align-items:start}

/* ---------- Formularios ---------- */
label{display:block;font-weight:600;margin:14px 0 6px;font-size:13.5px}
label.inline{display:flex;gap:8px;align-items:center;font-weight:500}
input[type=text],input[type=email],input[type=password],input[type=url],input[type=number],textarea,select{width:100%;padding:11px 13px;border:1px solid var(--line-2);border-radius:var(--r-sm);font:inherit;background:var(--paper);color:var(--ink);transition:border-color .15s,box-shadow .15s}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--tint)}
button:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
textarea{resize:vertical}
input[type=color]{width:52px;height:40px;padding:2px;border:1px solid var(--line-2);border-radius:var(--r-sm);background:var(--card)}
input[type=checkbox],input[type=radio]{accent-color:var(--accent)}
.hint{font-size:13px;color:var(--muted);margin-top:5px}

/* ---------- Botones ---------- */
.btn,button{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--accent);color:#fff;border:1px solid transparent;border-radius:999px;padding:11px 22px;font:inherit;font-weight:600;font-size:14.5px;cursor:pointer;text-decoration:none;transition:background .15s,transform .15s,border-color .15s}
.btn:hover,button:hover{background:var(--accent-d)}
.btn.small{padding:7px 16px;font-size:13.5px}
.btn.lg{padding:14px 28px;font-size:15.5px}
.btn.ghost,button.ghost{background:transparent;color:var(--ink);border-color:var(--line-2)}
.btn.ghost:hover,button.ghost:hover{background:transparent;border-color:var(--accent);color:var(--accent)}
button.danger{background:var(--danger)}
.row{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.pill{display:inline-flex;align-items:center;gap:6px;padding:3px 11px;border-radius:99px;font-size:12px;font-weight:700;background:var(--paper);color:var(--muted);border:1px solid var(--line)}
.pill.pro{background:var(--teal-tint);color:var(--teal);border-color:transparent}
.err{background:color-mix(in srgb,var(--danger) 10%,transparent);border:1px solid color-mix(in srgb,var(--danger) 30%,transparent);color:var(--danger);padding:11px 14px;border-radius:var(--r-sm);margin-bottom:14px}
.ok{background:color-mix(in srgb,var(--ok) 10%,transparent);border:1px solid color-mix(in srgb,var(--ok) 30%,transparent);color:var(--ok);padding:11px 14px;border-radius:var(--r-sm);margin-bottom:14px}

/* ---------- Panel ---------- */
.auth{max-width:420px;margin:32px auto}
.auth h1{font-size:26px}
.auth button[type=submit]{width:100%;margin-top:6px}
.auth-alt{text-align:center;font-size:14px;color:var(--muted);margin:16px 0 0}
.sites{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.site h2{margin-bottom:4px}
.site .meta{color:var(--muted);font-size:13px;margin-bottom:12px}
pre,.code{background:var(--code);color:#d7e3f4;padding:14px;border-radius:var(--r-sm);font:13px/1.55 var(--mono);overflow-x:auto;white-space:pre-wrap;word-break:break-all;border:1px solid var(--line)}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line)}
th{color:var(--muted);font-weight:600}
.preview{position:sticky;top:84px}
.stage{background:repeating-linear-gradient(45deg,var(--paper),var(--paper) 10px,var(--card) 10px,var(--card) 20px);border:1px solid var(--line);border-radius:var(--r);padding:16px;display:flex;flex-direction:column;align-items:center;gap:12px}
.stage iframe{width:100%;max-width:360px;height:520px;border:0;background:#fff;box-shadow:0 8px 30px rgba(15,27,45,.22)}
.fake-bubble{width:56px;height:56px;display:flex;align-items:center;justify-content:center;align-self:flex-end;box-shadow:0 4px 14px rgba(0,0,0,.25)}
.seg{display:flex;gap:8px;flex-wrap:wrap}
.seg label{margin:0;border:1px solid var(--line-2);border-radius:var(--r-sm);padding:8px 12px;cursor:pointer;font-weight:500;display:flex;gap:6px;align-items:center}
.seg label:has(input:checked){border-color:var(--accent);background:var(--tint)}

/* Página de "quitar anuncios" (upgrade.php) */
.hero{padding:40px 0 16px;max-width:680px}
.hero h1{font-size:40px;line-height:1.1;letter-spacing:-.03em;margin-bottom:14px}
.hero p{font-size:17px;color:var(--muted)}
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-top:28px}
.plans ul{padding-left:18px;color:var(--muted)}
.price{font-size:30px;font-weight:800;letter-spacing:-.02em}
.price small{font-size:14px;font-weight:500;color:var(--muted)}

/* ---------- Pie ---------- */
.foot{border-top:1px solid var(--line);background:var(--card)}
.foot-in{max-width:1140px;margin:0 auto;padding:22px 24px;display:flex;justify-content:space-between;gap:12px 24px;flex-wrap:wrap;font-size:13.5px;color:var(--muted)}
.foot p{margin:0}
.foot-links{display:flex;gap:18px;flex-wrap:wrap}
.foot a{color:var(--muted);text-decoration:none}
.foot a:hover{color:var(--accent)}
.foot strong{color:var(--ink)}

/* ============================================================
   LANDING (index.php)
   ============================================================ */
.l-wrap{max-width:1140px;margin:0 auto;padding:0 24px}
.l-eyebrow{font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);display:inline-flex;align-items:center;gap:10px}
.l-eyebrow::before{content:'';width:18px;height:1px;background:currentColor}
.l-head{max-width:620px;margin-bottom:40px}
.l-head h2{font-size:clamp(26px,3.2vw,36px);line-height:1.15;letter-spacing:-.025em;margin:14px 0 0}
.l-head p{color:var(--muted);font-size:16px;margin:14px 0 0}
.l-head.center{text-align:center;margin-left:auto;margin-right:auto}
.l-head.center .l-eyebrow::after{content:'';width:18px;height:1px;background:currentColor}
.l-section{padding:88px 0}
.l-alt{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.accent{color:var(--accent)}

/* Hero */
.l-hero{padding:72px 0 84px;background:radial-gradient(520px 340px at 85% 20%,var(--tint),transparent 70%)}
.l-hero .l-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.l-hero h1{font-size:clamp(34px,4.6vw,54px);line-height:1.06;letter-spacing:-.035em;margin:16px 0 18px}
.l-hero .lead{font-size:17.5px;color:var(--muted);max-width:520px;margin:0 0 28px}
.l-cta{display:flex;gap:12px;flex-wrap:wrap}
.l-micro{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:22px;padding:0;list-style:none;font-size:13.5px;color:var(--muted)}
.l-micro li{display:flex;align-items:center;gap:7px}
.l-micro i{color:var(--teal)}

/* Maqueta: una web con el chat abierto */
.mock{position:relative;border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line-2);box-shadow:0 30px 60px -24px rgba(15,23,42,.35);overflow:hidden;aspect-ratio:5/4.3}
.mock-bar{display:flex;align-items:center;gap:6px;padding:11px 14px;border-bottom:1px solid var(--line);background:var(--paper)}
.mock-bar span{width:10px;height:10px;border-radius:50%;background:var(--line-2)}
.mock-bar em{margin-left:10px;flex:1;font-style:normal;font-family:var(--mono);font-size:11px;color:var(--faint);background:var(--card);border:1px solid var(--line);border-radius:99px;padding:3px 12px}
.mock-page{padding:22px;display:flex;flex-direction:column;gap:10px}
.mock-page i{display:block;height:10px;border-radius:6px;background:var(--line)}
.mock-page i.t{height:18px;width:55%;background:var(--line-2)}
.mock-page i.s{width:80%}.mock-page i.m{width:65%}
.mock-page b{display:block;height:90px;border-radius:12px;background:var(--line);margin-top:6px;width:62%}
.mock-chat{position:absolute;right:18px;bottom:18px;width:min(270px,62%);border-radius:16px;overflow:hidden;background:#fff;box-shadow:0 14px 40px rgba(0,0,0,.28);font-size:12.5px;color:#111827;border:1px solid rgba(0,0,0,.06)}
html[data-theme="dark"] .mock-chat{background:#0f172a;color:#e5e7eb;border-color:rgba(255,255,255,.08)}
.mock-top{background:var(--accent);color:#fff;padding:10px 12px;display:flex;align-items:center;gap:8px;font-weight:700;font-size:13px}
.mock-top .on{margin-left:auto;font-weight:500;font-size:11px;display:flex;align-items:center;gap:5px;opacity:.9}
.mock-top .on::before{content:'';width:7px;height:7px;border-radius:50%;background:#4ade80}
.mock-msgs{padding:10px;display:flex;flex-direction:column;gap:7px}
.mm{display:flex;gap:6px;align-items:flex-end;max-width:92%}
.mm .av{width:22px;height:22px;border-radius:50%;color:#fff;font-weight:700;font-size:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.mm p{margin:0;background:#f1f3f5;padding:6px 10px;border-radius:12px;line-height:1.35}
html[data-theme="dark"] .mm p{background:#1e293b}
.mm p b{display:block;font-size:10.5px;color:#6b7280}
.mm .adm{background:var(--accent);color:#fff;font-size:9px;padding:0 5px;border-radius:99px;margin-left:4px;vertical-align:1px}
.mm.me{align-self:flex-end}
.mm.me p{background:var(--accent);color:#fff}
.mock-comp{display:flex;gap:6px;align-items:center;padding:8px 10px;border-top:1px solid rgba(127,127,127,.18)}
.mock-comp span{flex:1;padding:6px 10px;border-radius:99px;background:rgba(127,127,127,.12);color:#9ca3af;font-size:11.5px}
.mock-comp i{color:#9ca3af;font-size:13px}
.mock-comp .send{width:26px;height:26px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:11px}
.mock-fab{position:absolute;right:18px;bottom:18px;width:46px;height:46px;border-radius:50%;background:var(--accent);color:#fff;display:none}

/* Pasos */
.l-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:s}
.l-step{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;box-shadow:var(--shadow)}
.l-step .n{font-family:var(--mono);font-size:13px;font-weight:600;color:var(--accent)}
.l-step .ico{width:46px;height:46px;border-radius:var(--r);background:var(--tint);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:19px;margin:14px 0 16px}
.l-step h3{font-size:17px;margin:0 0 6px}
.l-step p{margin:0;color:var(--muted);font-size:14.5px}
.l-code{margin-top:22px;display:flex;align-items:center;gap:14px;flex-wrap:wrap;background:var(--code);border-radius:var(--r);padding:16px 18px;border:1px solid var(--line)}
.l-code code{flex:1;min-width:0;font:13px/1.5 var(--mono);color:#d7e3f4;word-break:break-all}
.l-code code .tg{color:#7dd3fc}.l-code code .at{color:#c4b5fd}.l-code code .st{color:#86efac}
.l-code .tagline{font-size:12.5px;color:#94a3b8;display:flex;gap:8px;align-items:center;white-space:nowrap}

/* Funciones */
.l-feats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.l-feat{padding:24px;border-radius:var(--r);background:var(--card);box-shadow:var(--shadow);border:1px solid var(--line)}
.l-feat i{width:42px;height:42px;border-radius:var(--r-sm);display:flex;align-items:center;justify-content:center;background:var(--tint);color:var(--accent);font-size:17px;margin-bottom:14px}
.l-feat:nth-child(3n+2) i{background:var(--teal-tint);color:var(--teal)}
.l-feat h3{font-size:16px;margin:0 0 6px}
.l-feat p{margin:0;color:var(--muted);font-size:14px}

/* Planes */
.l-plans{display:grid;grid-template-columns:repeat(2,minmax(0,380px));gap:22px;justify-content:center}
.l-plan{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.l-plan.best{border:2px solid var(--accent)}
.l-plan .tag{position:absolute;top:-12px;left:28px;background:var(--accent);color:#fff;font-size:11.5px;font-weight:700;padding:3px 12px;border-radius:99px;letter-spacing:.02em}
.l-plan h3{font-size:18px;margin:0 0 4px}
.l-plan .for{color:var(--muted);font-size:14px;margin:0 0 18px}
.l-plan ul{list-style:none;padding:0;margin:22px 0 26px;display:flex;flex-direction:column;gap:11px;flex:1}
.l-plan li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px}
.l-plan li i{margin-top:5px;font-size:12px;color:var(--teal);width:14px}
.l-plan li.no{color:var(--faint)}
.l-plan li.no i{color:var(--faint)}
.l-plan .btn{width:100%}

/* FAQ */
.l-faq{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.l-faq details{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:0 22px}
.l-faq summary{cursor:pointer;list-style:none;padding:18px 0;font-weight:600;display:flex;justify-content:space-between;gap:16px;align-items:center}
.l-faq summary::-webkit-details-marker{display:none}
.l-faq summary i{color:var(--faint);transition:transform .2s;font-size:13px}
.l-faq details[open] summary i{transform:rotate(180deg)}
.l-faq details p{margin:0 0 18px;color:var(--muted);font-size:14.5px}

/* CTA final */
.l-final{padding:0 0 88px}
.l-final-card{border-radius:var(--r-lg);padding:48px;text-align:center;background:radial-gradient(520px 260px at 50% 0%,var(--tint),transparent 70%),var(--card);border:1px solid var(--line)}
.l-final-card h2{font-size:clamp(24px,3vw,32px);margin:0 0 10px;letter-spacing:-.02em}
.l-final-card p{color:var(--muted);margin:0 auto 24px;max-width:520px}
.l-final-card .l-cta{justify-content:center}
.l-final-card .l-kw{margin:24px auto 0;font-size:14px;color:var(--muted)}
.l-kw a{font-weight:600;text-decoration:none}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .l-hero .l-wrap{grid-template-columns:1fr;gap:40px}
  .l-steps,.l-feats{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .grid{grid-template-columns:1fr}
  .preview{position:static}
}
@media (max-width:700px){
  .nav-in{padding:10px 16px}
  .nav nav{gap:12px}
  .nav nav a:not(.btn) i{display:none}
  .hide-sm{display:none!important}
  .logo small{display:none}
  main{padding:24px 16px 56px}
  .l-wrap{padding:0 16px}
  .l-section{padding:60px 0}
  .l-hero{padding:40px 0 60px}
  .l-steps,.l-feats,.l-plans{grid-template-columns:1fr}
  .l-final-card{padding:32px 20px}
  .mock{aspect-ratio:auto;min-height:480px}
  .mock-chat{width:84%;right:12px;bottom:12px}
  .l-code{flex-direction:column;align-items:flex-start}
  .hero h1{font-size:30px}
  .foot-in{padding:20px 16px}
}
@media (max-width:420px){
  .nav nav{gap:10px}
  .nav nav a.btn.small{padding:7px 12px;font-size:13px}
  .theme-btn{width:34px;height:34px}
}

.l-try{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--teal);background:var(--teal-tint);padding:8px 14px;border-radius:999px;margin:18px 0 0}