:root{
  --bg:#0f1115; --surface:#fff; --muted:#6b7280; --line:#e5e7eb;
  --text:#1f2430; --primary:#2563eb; --primary-dark:#1d4ed8;
  --success:#16a34a; --success-bg:#ecfdf5; --error:#dc2626; --error-bg:#fef2f2;
  --sidebar:#141925; --sidebar-text:#c3cad9; --radius:12px;
  --shadow:0 1px 3px rgba(16,24,40,.08),0 1px 2px rgba(16,24,40,.04);
}
*{box-sizing:border-box}
body{margin:0;font-family:'Inter',system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:#f4f6fb;color:var(--text);font-size:14px;line-height:1.5;
  -webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none}
h1,h2,h3{margin:0}

/* ---- Layout ---- */
.layout{display:flex;min-height:100vh}
.sidebar{width:240px;background:var(--sidebar);color:var(--sidebar-text);
  padding:20px 14px;display:flex;flex-direction:column;gap:24px;position:sticky;top:0;height:100vh}
.brand{display:flex;align-items:center;gap:10px;color:#fff;padding:0 6px}
.brand-center{justify-content:center;margin-bottom:18px}
.brand-dot{width:30px;height:30px;border-radius:9px;
  background:linear-gradient(135deg,#3b82f6,#8b5cf6);flex:none}
.brand strong{display:block;font-size:15px;line-height:1.1}
.brand small{color:#8c93a3;font-size:11px}
.nav{display:flex;flex-direction:column;gap:2px}
.nav a{color:var(--sidebar-text);padding:9px 12px;border-radius:9px;font-weight:500;font-size:13.5px}
.nav a:hover{background:rgba(255,255,255,.06);color:#fff}
.nav a.active{background:var(--primary);color:#fff}
.nav-sep{font-size:10.5px;text-transform:uppercase;letter-spacing:.06em;
  color:#5b6373;margin:14px 0 4px;padding:0 12px}

.main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{display:flex;align-items:center;justify-content:space-between;
  padding:16px 28px;background:#fff;border-bottom:1px solid var(--line)}
.topbar h1{font-size:18px}
.user-box{display:flex;align-items:center;gap:14px}
.user-meta{text-align:right}
.user-meta strong{display:block;font-size:13px}
.user-meta small{color:var(--muted);font-size:11.5px}
.content{padding:28px;max-width:1100px;width:100%}

/* ---- Auth ---- */
.auth-body{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}
.auth-card{background:#fff;padding:32px;border-radius:16px;box-shadow:var(--shadow);
  width:100%;max-width:380px}
.auth-card h2{margin-bottom:4px;font-size:20px}
.auth-card .sub{color:var(--muted);margin-bottom:22px}

/* ---- Cards / panels ---- */
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden}
.panel-pad{padding:22px}
.toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px;flex-wrap:wrap}
.toolbar .search{display:flex;gap:8px}

/* ---- Stats ---- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:8px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;box-shadow:var(--shadow)}
.stat .num{font-size:28px;font-weight:700}
.stat .lbl{color:var(--muted);font-size:12.5px;text-transform:uppercase;letter-spacing:.03em}

/* ---- Tables ---- */
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line)}
th{font-size:11.5px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);background:#fafbfc}
tbody tr:hover{background:#f9fafb}
.row-actions{display:flex;gap:6px;justify-content:flex-end;align-items:center;flex-wrap:wrap}
.row-actions form{margin:0;display:inline-flex}
.empty{padding:40px;text-align:center;color:var(--muted)}

/* ---- Forms ---- */
.form-grid{display:grid;gap:16px;max-width:560px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
label{display:block;font-weight:600;font-size:12.5px;margin-bottom:6px}
input[type=text],input[type=email],input[type=password],input[type=number],
input[type=date],input[type=time],select,textarea{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:9px;
  font-size:14px;background:#fff;color:var(--text);font-family:inherit;line-height:1.3;height:42px}
textarea{height:auto;min-height:80px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
/* Date/time: igualar altura y mejorar el icono del calendario */
input[type=date],input[type=time]{appearance:none;-webkit-appearance:none;position:relative}
input[type=date]::-webkit-calendar-picker-indicator,
input[type=time]::-webkit-calendar-picker-indicator{
  cursor:pointer;opacity:.55;padding:2px;border-radius:5px}
input[type=date]::-webkit-calendar-picker-indicator:hover,
input[type=time]::-webkit-calendar-picker-indicator:hover{opacity:1;background:#eef2f7}
input[type=date]::-webkit-datetime-edit,
input[type=time]::-webkit-datetime-edit{color:var(--text)}
input[type=date]:invalid::-webkit-datetime-edit{color:var(--muted)}
.check{display:flex;align-items:center;gap:8px}
.check input{width:auto}
.check label{margin:0}
.hint{color:var(--muted);font-size:12px;margin-top:4px}
.form-actions{display:flex;gap:10px;margin-top:6px}

/* ---- Buttons ---- */
.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border-radius:9px;
  border:1px solid transparent;font-size:13.5px;font-weight:600;cursor:pointer;
  background:#eef2f7;color:var(--text);transition:.15s}
.btn:hover{filter:brightness(.97)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);filter:none}
.btn-ghost{background:transparent;border-color:var(--line)}
.btn-danger{background:var(--error-bg);color:var(--error);border-color:#fecaca}
.btn-sm{padding:6px 11px;font-size:12.5px}
.btn-block{width:100%;justify-content:center}

/* ---- Badges ---- */
.badge{display:inline-block;padding:3px 9px;border-radius:20px;font-size:11.5px;font-weight:600}
.badge-on{background:var(--success-bg);color:var(--success)}
.badge-off{background:#f3f4f6;color:var(--muted)}
.badge-tipo{background:#eef2ff;color:#4338ca}

/* ---- Alerts ---- */
.alert{padding:12px 16px;border-radius:10px;margin-bottom:18px;font-weight:500}
.alert-success{background:var(--success-bg);color:var(--success);border:1px solid #bbf7d0}
.alert-error{background:var(--error-bg);color:var(--error);border:1px solid #fecaca}

.page-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.muted{color:var(--muted)}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---- Editor de líneas (proyectos) ---- */
table.lines{margin-bottom:12px}
table.lines th{background:transparent;border-bottom:1px solid var(--line)}
table.lines td{padding:6px 8px;border-bottom:0;vertical-align:middle}
table.lines td:first-child{padding-left:0}
table.lines input,table.lines select{padding:8px 10px}
.num-input{text-align:right}

/* ---- Barra de totales (resumen) ---- */
.totals-bar{position:sticky;bottom:16px;background:#fff;border:1px solid var(--line);
  border-radius:16px;box-shadow:0 10px 30px -8px rgba(16,24,40,.22);padding:18px;
  display:flex;justify-content:space-between;align-items:stretch;gap:20px;flex-wrap:wrap;margin-top:10px}
.summary{display:flex;gap:14px;flex-wrap:wrap;flex:1;min-width:280px}
.sum-card{background:#f8fafc;border:1px solid var(--line);border-radius:12px;
  padding:14px 16px;flex:1;min-width:230px;display:flex;flex-direction:column}
.sum-invoice{background:linear-gradient(180deg,#eef4ff,#f8fafc);border-color:#d7e3ff}
.sum-title{font-size:10.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);
  font-weight:700;margin-bottom:8px}
.sum-row{display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:5px 0;font-size:13.5px}
.sum-row > span{color:#475467}
.sum-row b{font-weight:600;font-variant-numeric:tabular-nums}
.sum-row .neg{color:var(--error)}
.sum-strong,.sum-grand{border-top:1px dashed #cfd6e2;margin-top:6px;padding-top:9px}
.sum-grand b{font-size:21px;font-weight:700;color:var(--primary)}
.sum-grand > span{font-weight:600;color:var(--text)}
.sum-util{display:flex;align-items:center;gap:8px}
.sum-util b{font-size:16px;color:var(--success)}
.pill{font-style:normal;font-size:11.5px;font-weight:700;padding:2px 9px;border-radius:20px;
  background:var(--success-bg);color:var(--success);line-height:1.5}
.iva-inline{display:inline-flex;align-items:center;gap:5px}
.iva-inline input{width:58px;height:30px;padding:3px 7px;text-align:center;font-size:13px}
.sum-actions{display:flex;flex-direction:column;justify-content:center;gap:10px;min-width:170px}
.sum-actions .btn{justify-content:center}
.btn-lg{padding:12px 22px;font-size:14.5px}

/* ---- Detalle de proyecto ---- */
.detail-head{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.detail-meta{display:grid;grid-template-columns:repeat(2,auto);gap:8px 28px;align-content:start}
.detail-meta > div{display:flex;flex-direction:column}
.detail-meta span{font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
.util-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin-bottom:20px}
.util-cards .stat .lbl{margin-bottom:4px}
tfoot td{border-top:1px solid var(--line);background:#fafbfc}

@media(max-width:760px){
  .sidebar{display:none}
  .form-row{grid-template-columns:1fr}
  .totals-bar{flex-direction:column;align-items:stretch}
}