/* ==========================================================================
   utprpro — sistema visual institucional (referencia Enagás, paleta utprpro)
   Sobrio, blanco, serif institucional para titulares + sans para cuerpo.
   Colores planos, líneas finas, sin degradados ni ornamento decorativo.
   ========================================================================== */
:root{
  --font-serif:"Source Serif 4",Georgia,"Times New Roman",serif;
  --font-sans:"Inter","Inter Variable",system-ui,-apple-system,sans-serif;
  --radius:8px;

  /* Neutros */
  --bg:#ffffff;
  --bg-alt:oklch(0.975 0.006 75);
  --ink:oklch(0.26 0.012 55);
  --body:oklch(0.42 0.012 55);
  --muted-fg:oklch(0.54 0.010 55);
  --line:oklch(0.905 0.006 70);

  /* Marca (naranja sobrio) */
  --brand:oklch(0.62 0.17 45);
  --brand-strong:oklch(0.54 0.16 44);
  --brand-ink:oklch(0.50 0.15 42);       /* naranja para texto sobre blanco (contraste) */
  --brand-soft:oklch(0.95 0.03 60);

  /* Semáforo (colores planos e institucionales) */
  --ok:oklch(0.50 0.11 150);
  --ok-line:oklch(0.62 0.12 150);
  --warn-ink:oklch(0.52 0.11 66);
  --warn-line:oklch(0.76 0.14 78);
  --danger:oklch(0.53 0.17 28);
  --danger-line:oklch(0.60 0.18 28);

  /* Compatibilidad con login / panel de aplicación */
  --background:var(--bg);
  --foreground:var(--ink);
  --card:#ffffff;
  --primary:var(--brand);
  --primary-foreground:#ffffff;
  --muted:var(--bg-alt);
  --muted-foreground:var(--muted-fg);
  --border:var(--line);
  --input:var(--line);
  --destructive:var(--danger);
  --ring:var(--brand);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;height:100%}
body{font-family:var(--font-sans);background:var(--bg);color:var(--body);line-height:1.5;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

h1,h2{font-family:var(--font-serif);font-weight:600;letter-spacing:-0.01em;color:var(--ink);margin:0}
h3,h4{font-family:var(--font-sans);color:var(--ink);margin:0}
a{color:var(--brand-ink)}
p{margin:0}
.muted{color:var(--muted-fg)}
.center{text-align:center}

img.logo{width:auto;display:block}
.logo-lg{height:52px}
.logo-sm{height:28px}
.brand{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-family:var(--font-sans)}
.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--brand)}

/* --------------------------------------------------------------- Botones */
.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:4px;padding:11px 20px;font-size:14px;font-weight:600;font-family:var(--font-sans);cursor:pointer;background:#fff;color:var(--ink);text-decoration:none;transition:background .15s,border-color .15s,color .15s;line-height:1.1}
.btn:hover{border-color:var(--muted-fg)}
.btn.primary{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn.primary:hover{background:var(--brand-strong);border-color:var(--brand-strong)}
.btn.outline{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.outline:hover{border-color:var(--brand);color:var(--brand-ink)}
.btn.ghost{background:transparent}
.btn.block{width:100%}
.btn.big{padding:14px 26px;font-size:15px}
.btn.tiny{padding:5px 10px;font-size:12px}
.btn:disabled{opacity:.6;cursor:default}

/* --------------------------------------------------- Formularios / inputs */
input,select{width:100%;background:#fff;border:1px solid var(--input);color:var(--ink);border-radius:6px;padding:11px 12px;font-size:14px;font-family:inherit;outline:none}
input:focus,select:focus{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in oklab,var(--brand) 16%,transparent)}
label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted-fg)}
.error{color:var(--danger);font-size:13px}

/* ========================================================================
   LANDING utprpro
   ======================================================================== */
.wrap{max-width:1160px;margin:0 auto;padding:0 24px;width:100%}
section[id]{scroll-margin-top:118px}

/* ------------------------------------------------------ Cabecera 2 niveles */
.site-header{position:sticky;top:0;z-index:50;background:#fff}
.util-bar{border-bottom:1px solid var(--line);background:#fff}
.util-inner{max-width:1160px;margin:0 auto;padding:8px 24px;display:flex;justify-content:flex-end;align-items:center;gap:22px}
.util-link{background:none;border:0;padding:0;font-family:inherit;font-size:12.5px;color:var(--muted-fg);text-decoration:none;cursor:pointer}
.util-link:hover{color:var(--brand-ink)}
.lang{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--muted-fg)}
.lang b{color:var(--ink);font-weight:600}
.lang .sep{opacity:.45}
.lang .off{color:var(--muted-fg)}
.lang .lang-opt{cursor:pointer;background:none;border:0;padding:0;font-family:inherit;font-size:inherit}
.lang .lang-opt:hover{color:var(--brand-ink)}
/* Evitar seleccion de texto al pulsar en la interfaz; se mantiene en campos de formulario */
body{-webkit-user-select:none;user-select:none}
input,textarea,[contenteditable]{-webkit-user-select:text;user-select:text}

.main-nav{border-bottom:1px solid var(--line);background:#fff}
.nav-inner{max-width:1160px;margin:0 auto;padding:15px 24px;display:flex;align-items:center;gap:24px}
.wordmark{font-family:var(--font-sans);font-weight:700;font-size:22px;letter-spacing:-0.02em;color:var(--ink);text-decoration:none;line-height:1}
.wordmark span{color:var(--brand-ink)}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:22px;flex:1}
.nav-links a{font-size:15px;font-weight:500;color:var(--ink);text-decoration:none}
.nav-links a:hover{color:var(--brand-ink)}
.nav-cta{margin-left:auto;padding:9px 18px}
@media(max-width:900px){.nav-links{display:none}.nav-cta{margin-left:auto}}

/* ---------------------------------------------------------------- Secciones */
.section{padding:74px 0}
.section.alt{background:var(--bg-alt)}
.eyebrow{display:inline-block;font-family:var(--font-sans);font-size:12px;font-weight:700;letter-spacing:0.14em;text-transform:uppercase;color:var(--brand-ink);margin:0 0 16px}
.section-head{max-width:820px;margin-bottom:38px}
.section h2{font-size:clamp(25px,3.2vw,36px);line-height:1.2}
.section-lead{margin-top:16px;font-size:18px;line-height:1.6;color:var(--body);max-width:70ch}
.note{margin-top:20px;font-size:13px;color:var(--muted-fg)}

/* Hero */
.hero{padding:90px 0 74px;background:#fff}
.hero h1{font-size:clamp(38px,5.4vw,58px);line-height:1.06;letter-spacing:-0.015em;margin:18px 0 0;max-width:15ch}
.hero .lead{margin:24px 0 0;font-size:19px;line-height:1.6;color:var(--body);max-width:62ch}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.cta-row .btn{padding:13px 26px;font-size:15px}

/* Bloques a dos columnas (Problema / Marco normativo) */
.two-col{display:grid;gap:28px;align-items:start}
@media(min-width:860px){.two-col{grid-template-columns:0.92fr 1.08fr;gap:64px}}
.col-head h2{font-size:clamp(24px,3vw,34px);line-height:1.2}
.col-body p{color:var(--body);font-size:17px;line-height:1.65}
.pull{margin-top:26px;font-family:var(--font-serif);font-size:clamp(21px,2.4vw,27px);line-height:1.35;color:var(--ink)}

/* Bloques funcionales (copy + visual) */
.feature{display:grid;gap:34px;align-items:center}
@media(min-width:860px){.feature{grid-template-columns:1fr 1fr;gap:58px}}
.feature-copy h2{font-size:clamp(24px,3vw,34px);line-height:1.2}
.feature-copy p{margin-top:18px;color:var(--body);font-size:17px;line-height:1.65;max-width:52ch}
.value-list{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:9px}
.value-list li{position:relative;padding-left:20px;color:var(--body);font-size:15px;line-height:1.5}
.value-list li:before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;background:var(--brand);border-radius:0}

/* ------------------------------------------------- Recuadros de vista previa */
.panel{border:1px solid var(--line);border-radius:6px;background:#fff;overflow:hidden}
.panel-head{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 16px;background:var(--bg-alt);border-bottom:1px solid var(--line);font-size:13px;font-weight:500;color:var(--muted-fg)}
.panel-head .delta{color:var(--ok);font-weight:700}
.panel-body{padding:18px 16px}
.panel-title{margin:0 0 12px;font-size:12px;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;color:var(--muted-fg)}
.doc-row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}
.doc-name{color:var(--ink);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.doc-state{flex:none;font-size:13px;font-weight:600}
.doc-state.ok{color:var(--ok)}
.panel-foot{margin:14px 0 0;font-size:14px;color:var(--muted-fg)}
.panel-foot strong{color:var(--ink);font-weight:600}
.report-desc{margin:0 0 18px;color:var(--body);font-size:15px;line-height:1.6}
.report-desc strong{color:var(--ink);font-weight:600}

/* Gráfico de facturación (un solo color plano) */
.chart{display:flex;align-items:flex-end;gap:5px;height:132px;padding-top:6px}
.chart .bar{flex:1;background:var(--brand);border-radius:2px 2px 0 0;min-height:4px}
.chart-foot{margin:12px 0 0;font-size:12.5px;color:var(--muted-fg)}

/* ------------------------------------------------- Semáforo de vencimientos */
.signal-grid{display:grid;gap:20px;margin-top:6px}
@media(min-width:760px){.signal-grid{grid-template-columns:repeat(3,1fr)}}
.signal{background:#fff;border:1px solid var(--line);border-top-width:3px;padding:22px 20px}
.signal.ok{border-top-color:var(--ok-line)}
.signal.warn{border-top-color:var(--warn-line)}
.signal.danger{border-top-color:var(--danger-line)}
.signal-tag{display:block;font-weight:700;font-size:15px;margin-bottom:10px}
.signal.ok .signal-tag{color:var(--ok)}
.signal.warn .signal-tag{color:var(--warn-ink)}
.signal.danger .signal-tag{color:var(--danger)}
.signal-desc{margin:0 0 10px;color:var(--body);font-size:14.5px;line-height:1.5}
.signal-ex{margin:0;color:var(--muted-fg);font-size:13.5px;line-height:1.5}

/* --------------------------------------------------------- Beneficios (3col) */
.benefits{display:grid;gap:30px}
@media(min-width:760px){.benefits{grid-template-columns:repeat(3,1fr);gap:40px}}
.benefit{border-top:2px solid var(--line);padding-top:20px}
.benefit h3{font-size:18px;font-weight:600;margin:0 0 10px;line-height:1.3}
.benefit p{color:var(--body);font-size:15px;line-height:1.6}

/* ---------------------------------------------------------- Marco normativo */
.norm-list{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:11px}
.norm-list li{position:relative;padding-left:22px;color:var(--body);font-size:15px;line-height:1.5}
.norm-list li:before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;background:var(--brand)}

/* -------------------------------------------------------------- CTA final */
.cta-final{background:var(--bg-alt);border-top:1px solid var(--line);text-align:center}
.cta-final h2{font-size:clamp(26px,3.4vw,38px);line-height:1.18;max-width:20ch;margin:0 auto}
.cta-final p{margin:18px auto 0;max-width:56ch;font-size:18px;line-height:1.6;color:var(--body)}
.cta-final .btn{margin-top:28px;padding:14px 30px;font-size:15px}
.cta-final .note{margin-top:18px}

/* ------------------------------------------------------------------ Footer */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:56px 0 0}
.foot-grid{display:grid;gap:34px}
@media(min-width:680px){.foot-grid{grid-template-columns:repeat(4,1fr)}}
.foot-col h4{font-size:13px;text-transform:uppercase;letter-spacing:0.08em;color:var(--ink);margin:0 0 14px;font-weight:600}
.foot-col a,.foot-link{display:block;color:var(--body);text-decoration:none;font-size:14px;margin-bottom:9px;background:none;border:0;padding:0;text-align:left;font-family:inherit;cursor:pointer}
.foot-col a:hover,.foot-link:hover{color:var(--brand-ink)}
.foot-contact{color:var(--body);font-size:14px;line-height:1.7}
.foot-contact a{color:var(--brand-ink)}
.foot-bottom{border-top:1px solid var(--line);margin-top:44px}
.foot-bottom .wrap{padding-top:20px;padding-bottom:20px;text-align:center;color:var(--muted-fg);font-size:13px}

/* ========================================================================
   LOGIN (sobrio, sin degradados)
   ======================================================================== */
.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;background:var(--bg-alt)}
.auth-card{width:100%;max-width:410px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:34px 32px;box-shadow:0 1px 3px rgba(0,0,0,.05)}
.logo-wrap{display:flex;justify-content:center;margin-bottom:18px}
.wordmark-lg{font-size:30px;letter-spacing:-0.02em}
.auth-card h1{margin:0;font-size:24px;text-align:center}
.auth-card .muted{margin:8px 0 0}
.auth-card form{display:flex;flex-direction:column;gap:14px;margin-top:22px}
.soporte{margin-top:20px;text-align:center;font-size:12px;color:var(--muted-fg)}
.linkback{background:none;border:0;color:var(--muted-fg);cursor:pointer;font-size:13px;padding:0;margin-bottom:8px;font-family:inherit}
.linkback:hover{color:var(--ink)}
.backrow{display:flex;justify-content:center;margin-top:18px}
.backlink{display:inline-flex;align-items:center;gap:8px;text-decoration:none}
.backlink .arw{display:inline-block;transition:transform .15s;line-height:1}
.backlink:hover .arw{transform:translateX(-3px)}

/* ========================================================================
   PANEL DE APLICACIÓN (tras iniciar sesión)
   ======================================================================== */
.layout{min-height:100vh;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 22px;border-bottom:1px solid var(--line);background:#fff}
.user{display:flex;align-items:center;gap:14px}
.uinfo{display:flex;flex-direction:column;align-items:flex-end;line-height:1.2}
.uinfo strong{font-size:13px;color:var(--ink)}
.badge{font-size:11px;color:#fff;background:var(--brand);padding:2px 9px;border-radius:999px;font-weight:700}
.content{padding:26px 22px;max-width:1080px;width:100%;margin:0 auto}
.page-head h1{margin:0 0 4px;font-size:24px}
.stack{display:flex;flex-direction:column;gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.card h2{margin:0;font-size:17px}
.row-form{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.row-form input,.row-form select{flex:1;min-width:150px}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line)}
th{color:var(--muted-fg);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.03em}
.tag{background:var(--bg-alt);border:1px solid var(--line);border-radius:999px;padding:1px 9px;font-size:12px}

/* ========================================================================
   RESPONSIVE
   ======================================================================== */
@media(max-width:640px){
  .wrap{padding:0 16px}
  .util-inner,.nav-inner{padding-left:16px;padding-right:16px}
  .section{padding:52px 0}
  .hero{padding:56px 0 48px}
  .section-head{margin-bottom:28px}
  .cta-row .btn{flex:1 1 100%}
  .content{padding:20px 16px}
  .topbar{padding:10px 16px}
  .auth-wrap{padding:18px}
  .auth-card{padding:26px 20px}
  .card{padding:16px}
}
@media(max-width:380px){
  .wrap,.util-inner,.nav-inner{padding-left:13px;padding-right:13px}
  .auth-card{padding:22px 16px}
}