:root{
  --bg:#0b1220;
  --card:#111a2e;
  --muted:#a9b4c6;
  --text:#eef2ff;
  --border:#22304a;
  --primary:#4f7cff;
  --danger:#ff4d4d;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 800px at 20% 0%, #101b33 0%, var(--bg) 60%);
  color:var(--text);
}

.hidden{ display:none !important; }

.topbar{
  position:sticky; top:0; z-index:20;
  background: rgba(11,18,32,.85);
  backdrop-filter: blur(8px);
  border-bottom:1px solid rgba(34,48,74,.6);
}

.brand{
  display:flex; gap:12px; align-items:center;
  padding:12px 14px;
  max-width: 980px;
  margin:0 auto;
}
.logo{
  width:40px; height:40px; border-radius:12px;
  background: linear-gradient(135deg, #4f7cff, #7c5cff);
  display:flex; align-items:center; justify-content:center;
  font-weight:700;
}
.brand-title{ font-weight:700; }
.brand-sub{ color:var(--muted); font-size:12px; }

.container{
  max-width: 980px;
  margin: 14px auto;
  padding: 0 14px 40px;
  display: grid;
  gap: 12px;
}

.card{
  background: rgba(17,26,46,.92);
  border:1px solid rgba(34,48,74,.9);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
}

h1,h2{ margin:0 0 8px; }
.muted{ color:var(--muted); margin: 0 0 10px; }

.form{ display:grid; gap:12px; }
.field{ display:grid; gap:6px; }
.field > span{ font-size:13px; color:var(--muted); }

input, select, textarea{
  width:100%;
  padding: 12px 12px;
  border-radius: 12px;
  border:1px solid rgba(34,48,74,.9);
  background: rgba(10,15,28,.6);
  color: var(--text);
  outline:none;
}
input:focus, select:focus, textarea:focus{
  border-color: rgba(79,124,255,.9);
  box-shadow: 0 0 0 3px rgba(79,124,255,.18);
}

.field.inline{
  display:flex;
  align-items:center;
  gap:10px;
}
.field.inline input{ width:auto; transform: scale(1.15); }

.row{ display:flex; gap:12px; }
.grow{ flex:1; }

.btn{
  padding: 12px 14px;
  border-radius: 12px;
  border:1px solid rgba(34,48,74,.9);
  background: rgba(16,26,48,.8);
  color: var(--text);
  font-weight: 650;
  cursor:pointer;
}
.btn.primary{
  background: linear-gradient(135deg, var(--primary), #7c5cff);
  border-color: transparent;
}
.btn:disabled{ opacity:.6; cursor:not-allowed; }
.btn.danger{
  background: rgba(255,77,77,.15);
  border-color: rgba(255,77,77,.35);
  color:#ffd5d5;
}

.menu{
  display:flex;
  gap:8px;
  align-items:center;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(34,48,74,.9);
  background: rgba(17,26,46,.92);
  overflow-x:auto;
}
.tab{
  white-space:nowrap;
  padding:10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(34,48,74,.9);
  background: rgba(10,15,28,.5);
  color: var(--text);
}
.right{ margin-left:auto; }

.msg{
  min-height: 18px;
  font-size: 13px;
  color: var(--muted);
}
.msg.err{ color:#ffb4b4; }
.msg.ok{ color:#b8ffd2; }

.list{
  display:grid;
  gap:10px;
}

/* Modal */
.modal{
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-content{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.modal-content h3{
  margin: 0 0 8px;
}

/* Code inline */
code{
  background: rgba(79, 124, 255, 0.15);
  border: 1px solid rgba(79, 124, 255, 0.3);
  border-radius: 6px;
  padding: 2px 6px;
  font-family: 'Courier New', monospace;
  font-size: 13px;
  color: #b8d7ff;
}