/* =========================
   Deep Corporate Blue Theme
   ========================= */

:root{
  --bg: #F8FAFC;            /* page background */
  --surface: #FFFFFF;       /* cards/surfaces */
  --text: #0F172A;          /* main text (slate-900) */
  --muted: #64748B;         /* muted text */

  --primary-900: #0B1F4B;   /* deep corporate blue */
  --primary-800: #0F2A63;
  --primary-700: #15357A;
  --primary-600: #1E3A8A;   /* main blue */
  --primary-500: #2563EB;   /* accent blue */

  --border: #E2E8F0;        /* light border */
  --shadow: 0 10px 25px rgba(15, 23, 42, 0.08);

  --success: #10B981;
  --danger: #EF4444;
  --warning: #F59E0B;

  --sidebar-w: 260px;
  --sidebar-collapsed-w: 78px;

  --radius: 14px;
  --radius-sm: 10px;

  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
}

/* Base */
* { box-sizing: border-box; }
html, body { height: 100%; }
body{
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
}

/* Layout wrapper */
.app{
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar{
  width: var(--sidebar-w);
  background: linear-gradient(180deg, var(--primary-900), var(--primary-800));
  color: #fff;
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 14px;
  transition: width .18s ease;
  overflow: hidden;
}

/* collapsed */
.app.is-collapsed .sidebar{
  width: var(--sidebar-collapsed-w);
}

/* Brand */
.brand{
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 10px 14px;
  border-bottom: 1px solid rgba(255,255,255,.12);
  margin-bottom: 14px;
}
.brand .logo{
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: rgba(255,255,255,.14);
  display: grid;
  place-items: center;
  font-weight: 800;
}
.brand .title{
  line-height: 1.1;
}
.brand .title strong{
  display: block;
  font-size: 14px;
  letter-spacing: .2px;
}
.brand .title span{
  display: block;
  font-size: 12px;
  opacity: .8;
}

/* Collapse button */
.sidebar-toggle{
  margin-left: auto;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.10);
  color: #fff;
  border-radius: 10px;
  padding: 8px 10px;
  cursor: pointer;
}
.sidebar-toggle:hover{
  background: rgba(255,255,255,.16);
}

/* Nav */
.nav{
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 10px;
}
.nav a{
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: rgba(255,255,255,.92);
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid transparent;
  transition: background .12s ease, border .12s ease;
}
.nav a:hover{
  background: rgba(255,255,255,.10);
  border-color: rgba(255,255,255,.08);
}
.nav a.active{
  background: rgba(37, 99, 235, .26);
  border-color: rgba(37, 99, 235, .35);
}

/* icon bubble */
.nav .ico{
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: rgba(255,255,255,.12);
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  font-size: 16px;
}
.nav .label{
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* When collapsed: hide labels */
.app.is-collapsed .brand .title,
.app.is-collapsed .nav .label{
  display: none;
}

/* Main */
.main{
  flex: 1;
  padding: 18px;
}

/* Topbar */
.topbar{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 16px;
}
.topbar .left{
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.topbar .left .page-title{
  font-weight: 800;
  font-size: 16px;
}
.topbar .left .page-sub{
  color: var(--muted);
  font-size: 12px;
}
.topbar .right{
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
}

/* Cards */
.card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}
.card + .card{ margin-top: 16px; }

/* Buttons */
.btn{
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  border-radius: 12px;
  padding: 10px 12px;
  cursor: pointer;
  font-weight: 700;
}
.btn-primary{
  background: var(--primary-600);
  border-color: var(--primary-600);
  color: #fff;
}
.btn-primary:hover{ filter: brightness(1.05); }
.btn-outline{
  background: transparent;
  color: var(--primary-600);
  border-color: rgba(30, 58, 138, .25);
}
.btn-outline:hover{
  background: rgba(30, 58, 138, .06);
}

/* Inputs */
.input, select, textarea{
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #fff;
  outline: none;
}
.input:focus, select:focus, textarea:focus{
  border-color: rgba(37,99,235,.55);
  box-shadow: 0 0 0 4px rgba(37,99,235,.12);
}

/* Small utilities */
.row{
  display: grid;
  gap: 12px;
}
.grid-2{ grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid-3{ grid-template-columns: repeat(3, minmax(0,1fr)); }

.badge{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid var(--border);
  background: #fff;
}
.badge.success{ border-color: rgba(16,185,129,.35); background: rgba(16,185,129,.10); color: #065F46; }
.badge.danger{ border-color: rgba(239,68,68,.35); background: rgba(239,68,68,.10); color: #7F1D1D; }

/* Responsive */
@media (max-width: 880px){
  .sidebar{ position: fixed; left: 0; z-index: 50; }
  .main{ margin-left: var(--sidebar-w); }
  .app.is-collapsed .main{ margin-left: var(--sidebar-collapsed-w); }
}