*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0f0f13;
  color: #e8e8f0;
  font-family: 'Segoe UI', system-ui, sans-serif;
}

.card {
  background: #1a1a24;
  border: 1px solid #2e2e44;
  border-radius: 16px;
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 480px;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

h1 {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  letter-spacing: 0.03em;
  color: #c8b6ff;
}

.row {
  display: flex;
  gap: 0.75rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: #9090b0;
}

input {
  background: #12121a;
  border: 1px solid #2e2e44;
  border-radius: 8px;
  color: #e8e8f0;
  font-size: 1rem;
  padding: 0.55rem 0.75rem;
  width: 100%;
  outline: none;
  transition: border-color 0.15s;
}

input:focus { border-color: #7b5ea7; }

#symbol-input { flex: 0 0 auto; width: 88px; font-size: 1.4rem; text-align: center; }
#count-input  { flex: 1; }

#output {
  background: #12121a;
  border: 1px solid #2e2e44;
  border-radius: 8px;
  min-height: 80px;
  max-height: 220px;
  overflow-y: auto;
  padding: 0.75rem;
  font-size: 1.2rem;
  word-break: break-all;
  line-height: 1.6;
  color: #e8e8f0;
  user-select: all;
}

.actions {
  display: flex;
  gap: 0.75rem;
}

button {
  flex: 1;
  padding: 0.65rem 1rem;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
}

button:active { transform: scale(0.97); }

#generate-btn {
  background: #7b5ea7;
  color: #fff;
}

#generate-btn:hover { opacity: 0.88; }

#copy-btn {
  background: #2e2e44;
  color: #c8b6ff;
}

#copy-btn:hover { opacity: 0.8; }

#copy-btn.copied {
  background: #2a4a2a;
  color: #7dda7d;
}

.hint {
  font-size: 0.75rem;
  color: #55556a;
  text-align: center;
}