:root{
  /* Marca Md2Titán, tomada directamente del logo */
  --brand-navy:#0a1420;
  --brand-navy-soft:#121f30;
  --brand-navy-line:#22334a;
  --brand-blue:#14b8ff;
  --brand-blue-deep:#0e84b7;
  --brand-silver:#eef2f7;

  --ink:#0f1722;
  --ink-soft:#4b5768;
  --ink-faint:#8791a3;
  --paper:#f2f4f8;
  --card:#ffffff;
  --line:#dde2ea;
  --accent:var(--brand-blue);
  --accent-ink:var(--brand-navy);
  --ok:#2e9e5b;
  --danger:#c94b3a;
  --focus:var(--brand-blue-deep);
}
*{box-sizing:border-box;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Inter",system-ui,sans-serif;
  -webkit-tap-highlight-color:transparent;
}
a{color:inherit;}
h1,h2,h3{font-family:"Space Grotesk",sans-serif;font-weight:700;margin:0 0 8px;}
img{max-width:100%;}

/* ---- pantalla de login (login.php / admin/login.php) ---- */
.gate{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:32px 20px;background:var(--brand-navy);}
.gate-logo{width:min(220px,58vw);height:auto;margin-bottom:28px;}
.gate-card{background:var(--brand-navy-soft);border:1px solid var(--brand-navy-line);border-radius:18px;padding:32px 28px;max-width:360px;width:100%;text-align:center;}
.gate-card h1{font-size:22px;margin-bottom:6px;color:#fff;}
.gate-card p{color:#9fb0c7;font-size:14px;margin:0 0 22px;}
.gate-card form{display:flex;flex-direction:column;gap:12px;}
.gate-card input{font-family:"Inter",sans-serif;font-size:16px;border:2px solid var(--brand-navy-line);border-radius:10px;padding:13px 14px;background:#0d1826;color:#fff;}
.gate-card input::placeholder{color:#6b7c93;}
.gate-card input:focus{outline:none;border-color:var(--brand-blue);}
.gate-card button{font-family:"Inter",sans-serif;font-weight:700;font-size:15px;background:var(--brand-blue);color:var(--brand-navy);border:none;border-radius:10px;padding:14px;cursor:pointer;margin-top:4px;min-height:48px;}
.gate-card button:hover{filter:brightness(1.08);}
.gate-error{color:#ff8a75;font-size:13px;margin-top:14px;min-height:1em;}

/* ---- shell interno (admin y panel) ---- */
.shell{display:flex;min-height:100vh;}
.sidebar{width:220px;flex-shrink:0;background:var(--brand-navy);color:#fff;padding:22px 16px;}
.sidebar .brand{display:block;margin-bottom:24px;}
.sidebar .brand img{height:30px;width:auto;display:block;}
.sidebar nav a{display:block;color:#a9b7cc;text-decoration:none;font-size:14px;padding:11px 12px;border-radius:8px;margin-bottom:2px;min-height:44px;line-height:22px;}
.sidebar nav a:hover{background:rgba(255,255,255,.08);color:#fff;}
.sidebar nav a.active{background:var(--brand-blue);color:var(--brand-navy);font-weight:700;}
.main{flex:1;padding:32px clamp(16px,4vw,40px) 56px;max-width:1100px;min-width:0;}
.main h1{font-size:24px;margin-bottom:4px;}
.main .subtitle{color:var(--ink-soft);font-size:14px;margin:0 0 24px;}

.panel{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px;}
.panel .head{font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:15px;margin-bottom:10px;}

table.simple{width:100%;border-collapse:collapse;font-size:13.5px;}
table.simple th{text-align:left;font-size:11px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-faint);padding:0 10px 8px;border-bottom:1px solid var(--line);}
table.simple td{padding:9px 10px;border-bottom:1px solid var(--line);}
table.simple tr:last-child td{border-bottom:none;}

.btn{display:inline-flex;align-items:center;justify-content:center;font-family:"Inter",sans-serif;font-weight:600;font-size:13px;border-radius:8px;padding:9px 14px;cursor:pointer;border:1px solid transparent;text-decoration:none;min-height:40px;}
.btn-primary{background:var(--brand-blue);color:var(--brand-navy);font-weight:700;}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-soft);}
.btn-ok{background:var(--ok);color:#fff;}
.btn:hover{filter:brightness(1.05);}

.badge{display:inline-block;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.03em;padding:3px 9px;border-radius:999px;}
.badge-on{background:#e3f5ea;color:var(--ok);}
.badge-off{background:#f1f2f6;color:var(--ink-faint);}

.field-inline{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px;}
.field-inline input{font-family:"Inter",sans-serif;font-size:15px;border:1px solid var(--line);border-radius:8px;padding:10px;min-height:40px;}

/* ---- inputs/selects/textareas sueltos dentro de formularios del panel y admin ---- */
.main input:not([type=hidden]),.main select,.main textarea{
  font-family:"Inter",sans-serif;font-size:16px;border:1px solid var(--line);border-radius:8px;
  padding:10px 12px;min-height:44px;background:#fff;color:var(--ink);width:100%;
}
.main textarea{min-height:auto;resize:vertical;}
.main input:focus,.main select:focus,.main textarea:focus{outline:none;border-color:var(--brand-blue);}
.main input[disabled]{background:#f1f2f6;color:var(--ink-faint);}

/* ---- subnav interno de Titancont (Facturas/Presupuestos/Productos/...) ---- */
.subnav{display:flex;gap:4px;flex-wrap:wrap;margin:2px 0 22px;border-bottom:1px solid var(--line);}
.subnav a{font-family:"Inter",sans-serif;font-weight:600;font-size:13.5px;color:var(--ink-soft);text-decoration:none;padding:9px 14px;border-bottom:2px solid transparent;margin-bottom:-1px;}
.subnav a:hover{color:var(--ink);}
.subnav a.active{color:var(--brand-blue-deep);border-bottom-color:var(--brand-blue);}

.badge-pendiente{background:#fdf0dd;color:#b5741a;}
.badge-pagado,.badge-aceptado{background:#e3f5ea;color:var(--ok);}
.badge-vencido,.badge-rechazado{background:#fbe6e2;color:var(--danger);}

.linea-doc{display:grid;grid-template-columns:90px 1fr 70px 100px 100px 32px;gap:8px;align-items:center;margin-bottom:6px;}
.linea-doc input{margin:0;}
.linea-doc .precio-total{font-family:'IBM Plex Mono',monospace;font-size:13.5px;text-align:right;padding-right:6px;}
.linea-doc .quitar-linea{background:transparent;border:none;color:var(--ink-faint);cursor:pointer;font-size:16px;padding:4px;}
.linea-doc .quitar-linea:hover{color:var(--danger);}
.linea-doc-head{display:grid;grid-template-columns:90px 1fr 70px 100px 100px 32px;gap:8px;font-size:11px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-faint);padding:0 0 6px;}

.totales-doc{max-width:320px;margin-left:auto;margin-top:10px;}
.totales-doc div{display:flex;justify-content:space-between;padding:4px 0;font-size:13.5px;}
.totales-doc .total-final{font-weight:700;font-size:16px;border-top:1px solid var(--line);margin-top:4px;padding-top:8px;}

@media (max-width:760px){
  .linea-doc,.linea-doc-head{grid-template-columns:1fr;}
  .linea-doc{border-bottom:1px solid var(--line);padding-bottom:10px;margin-bottom:10px;}
  .linea-doc-head{display:none;}
}

.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px;}
.tool-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;text-decoration:none;color:inherit;display:block;}
.tool-card:hover{border-color:var(--brand-blue);}
.tool-card .name{font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:15px;margin-bottom:6px;}
.tool-card .desc{font-size:12.8px;color:var(--ink-soft);margin:0;}

/* ---- tablas con scroll horizontal en vez de romperse en móvil ---- */
.table-scroll{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;}

/* =====================================================================
   Móvil: la barra lateral pasa a ser una cabecera horizontal fija
   arriba, con la navegación en una fila con scroll — así el panel y el
   admin funcionan igual de bien en un teléfono en obra.
   ===================================================================== */
@media (max-width:760px){
  .shell{flex-direction:column;min-height:auto;}
  .sidebar{
    width:100%;
    display:flex;
    align-items:center;
    gap:14px;
    padding:12px 14px;
    position:sticky;
    top:0;
    z-index:5;
  }
  .sidebar .brand{margin-bottom:0;flex-shrink:0;}
  .sidebar .brand img{height:24px;}
  .sidebar nav{display:flex;gap:4px;overflow-x:auto;-webkit-overflow-scrolling:touch;flex:1;}
  .sidebar nav a{white-space:nowrap;margin-bottom:0;padding:9px 12px;font-size:13.5px;min-height:36px;}
  .sidebar nav a[href*="logout"]{margin-top:0;margin-left:auto;}
  .main{padding:20px 16px 40px;}
  .tools-grid{grid-template-columns:1fr;}
  .field-inline{flex-direction:column;}
  .subnav{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;}
  .subnav a{white-space:nowrap;}
}

/* =====================================================================
   Modal genérico (ficha de proyecto, envío de facturas...). En móvil se
   comporta como una "hoja" que sube desde abajo — más cómodo con el
   pulgar que un recuadro centrado pequeño; en escritorio es un diálogo
   centrado normal.
   ===================================================================== */
.app-modal-overlay{
  display:none;position:fixed;inset:0;background:rgba(10,14,22,.55);
  z-index:200;align-items:flex-end;justify-content:center;
}
.app-modal-overlay.open{display:flex;}
.app-modal-box{
  background:var(--card);width:100%;max-width:680px;max-height:90vh;
  overflow-y:auto;-webkit-overflow-scrolling:touch;position:relative;
  border-radius:18px 18px 0 0;padding:26px 20px 24px;
  box-shadow:0 -8px 30px rgba(0,0,0,.25);
}
.app-modal-close{
  position:absolute;top:10px;right:12px;background:transparent;border:none;
  font-size:26px;line-height:1;color:var(--ink-faint);cursor:pointer;
  padding:6px 10px;border-radius:8px;
}
.app-modal-close:hover{background:rgba(0,0,0,.06);}
body.app-modal-lock{overflow:hidden;}
@media (min-width:761px){
  .app-modal-overlay{align-items:center;}
  .app-modal-box{border-radius:16px;margin:24px;padding:28px;}
}