:root{
  --bg:#0f1115;
  --panel:#15171b;
  --muted:#bfc7cf;
  --accent:#13c6b6;
  --glass: rgba(255,255,255,0.03);
  --radius:12px;
  --gap:16px;
}

*{box-sizing:border-box}
html,body,#root{height:100%}
body{
  margin:0;
  font-family: Inter, system-ui, sans-serif;
  background: linear-gradient(180deg,#0b0c0e 0%, #0f1115 100%);
  color: #e8eef1;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

/* Layout grid */
.dashboard{
  display: grid;
  grid-template-columns: 260px 1fr 320px;
  grid-template-rows: 72px 1fr;
  grid-template-areas:
    "sidebar header header"
    "sidebar main aside";
  gap: var(--gap);
  height:100vh;
  padding:16px;
}

/* Sidebar */
.sidebar{
  grid-area: sidebar;
  background:var(--panel);
  border-radius:var(--radius);
  padding:16px;
  display:flex;
  flex-direction:column;
  gap:20px;
  transition: width .28s ease, transform .15s ease;
}
.brand{display:flex;align-items:center;gap:12px}
.logo{
  width:44px;height:44px;border-radius:10px;background:linear-gradient(135deg,var(--accent),#00a9ff);
  display:flex;align-items:center;justify-content:center;font-weight:700;
}
.brand-name{font-family:Poppins, sans-serif;font-size:1.05rem;margin:0}
#toggle-btn{margin-left:auto;background:none;border:0;color:var(--muted);font-size:18px;cursor:pointer}

/* Nav */
.nav{display:flex;flex-direction:column;gap:8px}
.nav-link{
  display:flex;align-items:center;gap:10px;padding:10px;border-radius:8px;color:var(--muted);text-decoration:none;font-weight:600;
}
.nav-link:hover{background:var(--glass);color:var(--accent)}
.nav-link .icon{font-size:18px}
.nav-link .label{white-space:nowrap}
.nav-link.active{background:linear-gradient(90deg, rgba(19,198,182,0.12), rgba(0,169,255,0.06));color:var(--accent)}

/* Header */
.header{
  grid-area: header;
  display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-radius:var(--radius);
  background:transparent;
}
.search input{
  width:420px;padding:10px 12px;border-radius:10px;background:var(--panel);border:1px solid rgba(255,255,255,0.03);color:var(--muted);
  outline:none;font-size:0.95rem
}
.header-right{display:flex;align-items:center;gap:12px}
.notif{position:relative;padding:8px}
.badge{background:var(--accent);padding:2px 6px;border-radius:8px;margin-left:6px;color:#041014}

/* Main */
.main{grid-area: main;padding:8px;display:flex;gap:16px}
.overview{flex:1 1 30%}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:12px}
.stat.card{background:var(--panel);padding:12px;border-radius:10px;min-height:72px}
.stat .big{font-size:1.4rem;margin-top:8px;color:var(--accent);font-weight:700}

/* Cards grid */
.projects{flex:2 1 60%}
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-top:12px}
.card{background:var(--panel);padding:14px;border-radius:12px;box-shadow:0 6px 18px rgba(0,0,0,0.35);transition:transform .18s ease, box-shadow .18s ease}
.card:hover{transform:translateY(-6px);box-shadow:0 14px 28px rgba(0,0,0,0.5)}
.thumb{width:100%;height:140px;object-fit:cover;border-radius:10px;margin-bottom:10px}
.title{margin:6px 0 4px;font-family:Poppins}
.meta{font-size:.85rem;color:var(--muted)}

/* Right sidebar (notifications) */
.sidebar-right{grid-area:aside;display:flex;flex-direction:column;gap:12px}
.notifications.card{padding:14px;border-radius:12px;background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01))}

/* small helpers */
.avatar{width:40px;height:40px;border-radius:8px;object-fit:cover}
.card h4{margin:0}
ul{margin:0;padding:0;list-style:none}

/* collapsed sidebar (JS toggles) */
.sidebar.collapsed{width:80px;min-width:80px}
.sidebar.collapsed .brand-name,
.sidebar.collapsed .nav-link .label{display:none}
.sidebar.collapsed .nav-link{justify-content:center}

/* responsive fallback */
@media (max-width:1000px){
  .dashboard{grid-template-columns:72px 1fr; grid-template-areas: "sidebar header" "sidebar main"; grid-template-rows:72px 1fr}
  .sidebar-right{display:none}
  .search input{width:220px}
}
.avatar {
  width: 150px;
  height: 150px;
  object-fit: cover;
  border-radius: 50%;
}