/* =====================================================================
   ProductfySEO - Estilos (SaaS, claro/oscuro, responsive)
   ===================================================================== */
:root{
  --bg:#f4f6fb; --surface:#ffffff; --surface-2:#f8fafc; --border:#e5e9f2;
  --text:#1f2937; --muted:#6b7280; --primary:#2563eb; --primary-dark:#1d4ed8;
  --sidebar-bg:#0f172a; --sidebar-text:#cbd5e1; --sidebar-active:#1e293b;
  --ok:#16a34a; --warn:#d97706; --bad:#dc2626; --radius:14px;
  --shadow:0 1px 3px rgba(16,24,40,.06),0 1px 2px rgba(16,24,40,.04);
}
[data-theme="dark"]{
  --bg:#0b1220; --surface:#111a2e; --surface-2:#0f1729; --border:#1f2a44;
  --text:#e2e8f0; --muted:#94a3b8; --sidebar-bg:#070d1a; --sidebar-active:#16223c;
  --shadow:0 1px 3px rgba(0,0,0,.4);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;}

/* ---- Shell ---- */
.app-shell{display:flex;min-height:100vh}
.app-main{flex:1;min-width:0;display:flex;flex-direction:column}

/* ---- Sidebar ---- */
.sidebar{width:248px;background:var(--sidebar-bg);color:var(--sidebar-text);
  display:flex;flex-direction:column;position:sticky;top:0;height:100vh;flex-shrink:0;z-index:1040}
.sidebar-brand{display:flex;align-items:center;gap:10px;padding:20px 22px;font-size:1.2rem;
  color:#fff;border-bottom:1px solid rgba(255,255,255,.06)}
.sidebar-brand i{color:var(--primary);font-size:1.4rem}
.sidebar-brand strong{color:var(--primary)}
.sidebar-nav{display:flex;flex-direction:column;padding:14px 12px;gap:4px;overflow-y:auto;flex:1}
.sidebar-nav .nav-link{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:10px;
  color:var(--sidebar-text);text-decoration:none;font-size:.94rem;transition:.15s}
.sidebar-nav .nav-link i{font-size:1.1rem;width:20px;text-align:center}
.sidebar-nav .nav-link:hover{background:var(--sidebar-active);color:#fff}
.sidebar-nav .nav-link.active{background:var(--primary);color:#fff}
.sidebar-foot{padding:14px 22px;border-top:1px solid rgba(255,255,255,.06);color:#64748b}
.sidebar-backdrop{display:none}

/* ---- Topbar ---- */
.topbar{display:flex;align-items:center;gap:14px;padding:14px 26px;background:var(--surface);
  border-bottom:1px solid var(--border);position:sticky;top:0;z-index:1020}
.topbar-title{font-weight:600;font-size:1.05rem}
.topbar-search{margin-left:24px;flex:1;max-width:380px}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.topbar-user{color:var(--muted);font-size:.9rem}

/* ---- Content ---- */
.app-content{padding:26px;max-width:1500px;width:100%}

/* ---- Cards / metrics ---- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.metric-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:24px}
.metric{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px 20px;box-shadow:var(--shadow)}
.metric .label{color:var(--muted);font-size:.82rem;text-transform:uppercase;letter-spacing:.04em}
.metric .value{font-size:2rem;font-weight:700;margin-top:4px}
.metric .ic{float:right;font-size:1.6rem;opacity:.35}

/* ---- Quick actions ---- */
.quick-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px}

/* ---- Generation 3-column layout ---- */
.gen-layout{display:grid;grid-template-columns:340px 1fr 320px;gap:20px;align-items:start}
.gen-col{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow)}
.gen-col h5{font-size:.95rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin-bottom:16px}
@media(max-width:1200px){.gen-layout{grid-template-columns:1fr}}

/* ---- SEO score gauge ---- */
.seo-gauge{text-align:center;padding:8px 0 16px}
.seo-score-num{font-size:3rem;font-weight:800;line-height:1}
.seo-bar{height:10px;border-radius:6px;background:var(--surface-2);overflow:hidden;margin:12px 0}
.seo-bar>span{display:block;height:100%;border-radius:6px;transition:width .4s}
.lvl-ok{color:var(--ok)} .lvl-warn{color:var(--warn)} .lvl-bad{color:var(--bad)}
.bg-ok{background:var(--ok)} .bg-warn{background:var(--warn)} .bg-bad{background:var(--bad)}

/* ---- Warnings list ---- */
.warn-list{list-style:none;padding:0;margin:0}
.warn-list li{display:flex;gap:9px;align-items:flex-start;padding:8px 0;border-bottom:1px solid var(--border);font-size:.86rem}
.warn-list li:last-child{border-bottom:none}
.warn-dot{width:9px;height:9px;border-radius:50%;margin-top:5px;flex-shrink:0}

/* ---- SERP preview ---- */
.serp{background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:14px 16px;margin-bottom:14px}
.serp .s-title{color:#1a0dab;font-size:1.05rem;line-height:1.3}
[data-theme="dark"] .serp .s-title{color:#8ab4f8}
.serp .s-url{color:#006621;font-size:.82rem}
[data-theme="dark"] .serp .s-url{color:#5b9d5b}
.serp .s-desc{color:#4d5156;font-size:.86rem;margin-top:3px}
[data-theme="dark"] .serp .s-desc{color:#bcc0c4}

/* ---- Forms ---- */
.form-label{font-weight:500;font-size:.86rem;margin-bottom:4px}
.char-counter{font-size:.75rem;color:var(--muted);float:right}
.char-counter.over{color:var(--bad)}
textarea{resize:vertical}

/* ---- Tables ---- */
.table thead th{font-size:.78rem;text-transform:uppercase;letter-spacing:.03em;color:var(--muted)}
.table td,.table th{vertical-align:middle}

/* ---- Misc ---- */
.badge-soft{padding:.35em .65em;border-radius:6px;font-weight:600;font-size:.74rem}
.copy-btn{cursor:pointer}
.page-head{display:flex;align-items:center;gap:14px;margin-bottom:22px;flex-wrap:wrap}
.page-head h1{font-size:1.5rem;margin:0}
.page-head .spacer{flex:1}
.field-block{margin-bottom:16px}
.result-tabs .nav-link{font-size:.88rem}

/* ---- Login ---- */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#0f172a,#1e3a8a)}
.login-card{background:#fff;border-radius:18px;padding:38px 34px;width:100%;max-width:380px;box-shadow:0 20px 50px rgba(0,0,0,.3)}
.login-card .brand{text-align:center;font-size:1.6rem;margin-bottom:6px;color:#0f172a}
.login-card .brand strong{color:var(--primary)}

/* ---- Responsive sidebar ---- */
@media(max-width:992px){
  .sidebar{position:fixed;left:0;top:0;transform:translateX(-100%);transition:transform .25s}
  .sidebar.open{transform:translateX(0)}
  .sidebar-backdrop.show{display:block;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:1035}
}
.spinner-inline{width:1rem;height:1rem;border-width:.15em}