:root {
  --bg: #0b1220;
  --card: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.12);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.65);
  --primary: #7c3aed;
  --primary2: #22c55e;
  --danger: #ef4444;
  --warn: #f59e0b;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Helvetica Neue", sans-serif;
  background: radial-gradient(1200px 600px at 10% 0%, rgba(124, 58, 237, 0.25), transparent 50%),
              radial-gradient(900px 500px at 90% 10%, rgba(34, 197, 94, 0.18), transparent 55%),
              var(--bg);
  color: var(--text);
}

.container {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 28px 16px;
}

.card {
  width: min(560px, 100%);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.04));
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 22px;
  backdrop-filter: blur(10px);
}

.header h1 { margin: 0 0 6px; font-size: 28px; letter-spacing: -0.02em; }
.header p { margin: 0 0 18px; color: var(--muted); }

.topbar {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 12px;
}
.topbar h1 { margin: 0 0 6px; font-size: 28px; letter-spacing: -0.02em; }
.topbar p { margin: 0; color: var(--muted); }

.form { display: grid; gap: 14px; }
.field { display: grid; gap: 8px; }
.field span { color: var(--muted); font-size: 14px; }
input {
  width: 100%;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(10, 16, 30, 0.65);
  color: var(--text);
  outline: none;
}
input:focus { border-color: rgba(124, 58, 237, 0.75); box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2); }

.btn {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  cursor: pointer;
  transition: transform .05s ease, background .2s ease, border-color .2s ease;
  font-weight: 600;
}
.btn:hover { background: rgba(255, 255, 255, 0.1); }
.btn:active { transform: translateY(1px); }
.btn.primary {
  background: linear-gradient(90deg, rgba(124, 58, 237, 0.95), rgba(34, 197, 94, 0.85));
  border-color: rgba(255, 255, 255, 0.18);
}
.btn.primary:hover { filter: brightness(1.04); }

.msg {
  min-height: 20px;
  font-size: 14px;
  color: var(--muted);
}
.msg.ok { color: rgba(34, 197, 94, 0.95); }
.msg.err { color: rgba(239, 68, 68, 0.95); }
.msg.warn { color: rgba(245, 158, 11, 0.95); }

.modal.hidden { display: none; }
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: grid;
  place-items: center;
  padding: 18px;
}
.modal-card {
  width: min(640px, 100%);
  background: rgba(12, 18, 34, 0.95);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow);
}
.modal-card h2 { margin: 0 0 6px; }
.muted { color: var(--muted); margin: 0 0 14px; }
.copyrow { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: center; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 14px; }